Abstract

A belt damage detection method and detection system for a belt conveyor based on an improved CenterNet. The detection method comprises device deployment, data collection, edge denoising, local distribution and damage detection. The detection system comprises an image collection module, a data transmission module, a data processing module, a control module, an edge-end module and a cloud data processing module. On the basis of a deep learning model, tear damage, wear damage and rupture damage of a belt can be effectively detected by using a KDFA-CenterNet object detection loss algorithm; a real-time image denoising and enhancement model based on an invertible neural network can perform denoising and enhancement processing on collected images; and a cloud-edge-end collaborative load computing architecture based on a long short-term memory neural network is provided, and a cloud server, an edge computing node and a local server operate collaboratively, such that massive high-density data of belt images of a belt conveyor can be processed in real time.

IPC Classes  ?

• B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating

Abstract

22222 sequestration to achieve highly efficient mining and backfilling without affecting coal resource mining, promoting green mining and carbon-negative backfill implementation for mines, and proposing a new concept of carbon sequestration, thus having great application and research significance. Compared with solid backfill mining methods, using the rapid-setting adhesive material to fix gangue to form the high-porosity material having load-bearing performance can reduce the cost of the backfill mining technology and simplify an original tamping process.

IPC Classes  ?

• E21F 15/00 - Methods or devices for placing filling-up materials in underground workings

Abstract

Disclosed in the present invention is a negative-carbon filling mining method with a backfill paste CGIF material, specifically comprising: crushing coal gangue into an aggregate having a particle size of 0-20 mm; mixing the crushed coal gangue with steel slag, fly ash, cement, and an alkali activator under stirring to prepare a filling paste; after coal mining, conveying the filling material to a goaf by means of a filling pipeline pre-laid in the goaf or a filling pipeline formed by drilling; and after the filling is completed, injecting carbon dioxide into the filling paste to form a CGIF material, and completing carbon dioxide adsorption and underground sequestration treatment. The method can realize large-scale utilization of gangue, and the prepared CGIF carbon sequestration paste has a low cost, a high carbon dioxide sequestration capacity, a further improved mechanical strength after carbon dioxide sequestration with CGIF, and a good supporting effect on an overlying rock stratum.

IPC Classes  ?

• C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
• C04B 28/00 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
• C04B 38/08 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof by adding porous substances
• C04B 111/40 - Porous or lightweight materials

Abstract

The present invention relates to the field of hoisting drive systems for power shovels, and particularly to a reducer with balanced output of a very large torque from a plurality of motors, including a first motor shaft, a second motor shaft, a third motor shaft and a fourth motor shaft, which are each drivingly connected to the plurality of motors. In addition to outputting a very large torque employing the plurality of motors with the reducer, the reducer of the present invention can ensure that the output is balanced and stable, remarkably enhancing performance, safety and stability of a hoisting drive system for a power shovel. Adjustable motor transmission assemblies assembled on exterior lateral surfaces of the first motor shaft, the second motor shaft, the third motor shaft and the fourth motor shaft can adjust the number and locations of power transmission grooves according to the number and locations of actually active motors, greatly increasing applicability. Such adjustments are accomplished by a compact and sensible internal layout and design, without affecting external power transmission or heat dissipation spaces.

IPC Classes  ?

• F16H 37/06 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with a plurality of driving or driven shaftsCombinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts
• F16H 1/22 - Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shaftsToothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with arrangements for dividing torque between two or more intermediate shafts

Abstract

A multi-motor super-high-torque balanced output speed reducer, comprising a first motor shaft (1), a second motor shaft (2), a third motor shaft (3), and a fourth motor shaft (4) which are respectively transmittingly connected to multiple motors. The multiple motors cooperate with a speed reducer to output super-high torque, and balance and stability of output are also ensured, thereby improving the performance and safety stability of a power shovel lifting driving system. By mounting adjustable motor transmission assemblies (11) on the outer side surfaces of the first motor shaft (1), the second motor shaft (2), the third motor shaft (3), and the fourth motor shaft (4), the number and positions of transmission grooves can be adjusted on the basis of the actual number and positions of the motors, so that the applicability can be greatly improved. The use of the built-in layout adjustment design does not affect the external transmission and heat dissipation space, thereby achieving a compact structure and rational layout.

IPC Classes  ?

• F16H 37/06 - Combinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with a plurality of driving or driven shaftsCombinations of mechanical gearings, not provided for in groups comprising essentially only toothed or friction gearings with arrangements for dividing torque between two or more intermediate shafts
• F16H 57/023 - Mounting or installation of gears or shafts in gearboxes, e.g. methods or means for assembly

Abstract

The present disclosure provides an artificial intelligence-based method for enhancing mine safety by identifying and predicting locations of water inrush points in a mine, including the following steps: S1: constructing a numerical model to determine priori information of parameters to be recognized based on observation data, including coordinates of locations of water inrush points; S2: generating a training sample dataset and a test sample dataset of an alternative model based on the numerical model and the priori information of the parameters; S3: constructing and training a neural network of the alternative model; S4: testing an accuracy of the alternative model; and S5: performing a simulated annealing algorithm to identify the locations of water inrush points and simulation model parameters.

IPC Classes  ?

• E21F 17/00 - Methods or devices for use in mines or tunnels, not covered elsewhere
• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
• G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
• G06F 111/10 - Numerical modelling
• G06F 113/08 - Fluids

Abstract

The present invention relates to the technical field of coal mine water inrush disaster prevention and control, and relates to an artificial intelligence-based method for identifying a water inrush point in a mine and parameters of a simulation model, comprising the following steps: step 1: establishing a numerical model on the basis of observation data, and determining prior information of parameters to be identified including position coordinates of a water inrush point; step 2: on the basis of the numerical model and the prior information of the parameters, generating a training sample dataset and a test sample dataset for an alternative model; step 3: constructing and training an alternative model neural network; step 4: testing the accuracy of the alternative model; and step 5: executing a simulated annealing algorithm to identify the position of the water inrush point and parameters of a simulation model. By using the method provided by the present invention, the problem in accurate positioning of water inrush points in underground coal mines can be solved, which is of great significance in carrying out scientific disaster management and rescue efforts in a timely manner.

IPC Classes  ?

• G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
• G06N 3/0464 - Convolutional networks [CNN, ConvNet]
• G06N 3/08 - Learning methods
• G06Q 50/02 - AgricultureFishingForestryMining
• G06F 111/06 - Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]
• G06F 113/08 - Fluids
• G06F 119/08 - Thermal analysis or thermal optimisation

Abstract

The present invention belongs to the technical field of monorail crane apparatuses, and particularly relates to an auxiliary transport robot track gradient switching device and method. The auxiliary transport robot track gradient switching device comprises two fixed rails arranged at different heights, wherein a transition rail switching mechanism is provided between the two fixed rails, and is configured to connect transition rails having different gradients between the two fixed rails. The transition rail switching mechanism comprises: a first connecting disc and a second connecting disc which are oppositely arranged in parallel, the first connecting disc and the second connecting disc being coaxially connected by means of a transmission shaft, and the plurality of transition rails having different gradients are uniformly arranged in the circumferential direction of the connecting discs between the two connecting discs; lifting units, which are configured to drive the first connecting disc, the second connecting disc and the plurality of transition rails having different gradients to move vertically together; and a first driving unit which can drive the first connecting disc and the second connecting disc to rotate synchronously so as to switch between the transition rails having different gradients. The present invention solves the problem in the prior art of it not being possible to freely switch between a plurality of different gradients due to site constraints.

IPC Classes  ?

• B66C 11/06 - Underhung trolleys running on monorails

Abstract

A variable-range valve leakage detection device includes a leakage detection pipeline (6). The leakage detection pipeline (6) includes expandable sections (24), a variable-diameter pipeline (23), an outer wall portion, and a supporting pipeline (19). The expandable sections (24) each include a flexible fabric (242) and movable metal plates (241). The movable metal plates (241) are wrapped inside the flexible fabric (242) to ensure that a gas entering the variable-diameter pipeline (23) does not leak. The variable-diameter pipeline (23) includes an upper support (32), a lower support (33), and movable blades (34). Round pins are arranged on the upper support (32) and protrude from the upper support (32) to respectively drive the movable blades (34) to move. The lower support (33) is provided with rectangular grooves to enable the movable blades (34) to rotate about the lower support (33).

IPC Classes  ?

• G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves

Abstract

An integral frame-type machine body structure of a coal mining machine, and an integral frame-type intelligent coal mining machine. A structure in which an integral frame-type framework is welded to articulated frames is adopted, and the frame-type framework is configured to be of a transverse drawer-type structure, thereby achieving high interchangeability. The articulated frames are symmetrically distributed on a left side and a right side of the frame-type framework and are welded and connected to the frame-type framework; and a top plate (16) and a bottom plate (14) are fixedly arranged at an upper part and a lower part of the frame-type framework, respectively, external traction transverse plates (9) are fixedly arranged on the left side and the right side of the frame-type framework, and several intermediate vertical plates are fixedly arranged between the top plate (16) and the bottom plate (14), which are located an upper side and a lower side of the frame-type framework, to divide same, so as to obtain a plurality of cavities. The modularization rate of the coal mining machine is improved, thereby improving the interchangeability, facilitating underground maintenance and overhaul, and enhancing the matching adaptability; in addition, the force-bearing condition of the coal mining machine during the working process is improved, and the reliability of a transmission system of the coal mining machine is enhanced.

IPC Classes  ?

• E21C 35/00 - Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or

Abstract

A method and device for preventing rib spalling in a high-stress surrounding rock by hydraulic slotting are provided. The construction steps include: obtaining mechanical parameters of a surrounding rock and determine a width of each of pressure relief grooves; opening four drilling holes along an excavation direction of a roadway, and the four drilling holes are arranged at two sides of the roadway in pairs, and two of the drilling holes, located at the same side, are arranged at a bottom and a top of the roadway respectively; hydraulically slotting the drilling holes towards the roadway in a horizontal direction to form the pressure relief grooves; and excavating the surrounding rock to form the roadway, and the roadway is in communication with the pressure relief grooves.

IPC Classes  ?

• E21C 37/12 - Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid

Abstract

A bactericide and reducing bacterium coupled remediation material for inhibiting acidification of coal gangue and a use thereof. The remediation material is a composite material for inhibiting acidification of coal gangue, which is formed by adsorbing a reducing bacterium by biochar to form an immobilized microbial inoculum, and then mixing the immobilized microbial inoculum with a bactericide with a sustained-release function at a volume ratio of 1:10-20, the reducing bacterium being 5-10 ml of sulfate reducing bacterium, and the bactericide being 50-100 mg/L of sodium dodecyl sulfate solution. The remediation material can remediate a coal gangue dump having the pH of 4-6, achieves the acid production inhibition effect of 80% or more and the pH value of 6.0 or more, involves simple operate, low cost, long effective time and visual effect, and has important scientific values for promoting acidification pollution remediation of a waste dump in a coal mine area and land reclamation and ecological restoration work.

IPC Classes  ?

• C12N 11/14 - Enzymes or microbial cells immobilised on or in an inorganic carrier
• E02D 3/00 - Improving or preserving soil or rock, e.g. preserving permafrost soil
• B09B 3/60 - Biochemical treatment, e.g. by using enzymes
• C12N 1/20 - BacteriaCulture media therefor
• C12R 1/01 - Bacteria or actinomycetales

Abstract

The present invention relates to the technical field of environmental perception in confined spaces, and discloses a multi-modal coupled perception method for target recognition and region segmentation in a confined space. The method comprises: firstly, constructing a 3D point cloud data processing network, a 2D point cloud data processing network, and an image data processing network; next, constructing a feature fusion device, and outputting a bird's-eye view incorporating multi-sensor information; then constructing a multi-scale feature fusion extraction network and a network output head, outputting a target recognition and region segmentation result, and designing a loss function to train a network weight; and finally, inputting 3D point cloud data, 2D point cloud data, and camera image data into a network model, performing inference to obtain a target recognition and region segmentation prediction result, and performing visual rendering on the prediction result. In the present invention, in view of the characteristics of a millimeter-wave radar, a multi-modal coupled perception network is constructed, so that effective information in mass point cloud data of the millimeter-wave radar can be deeply mined, thereby effectively improving the detection accuracy of target recognition.

IPC Classes  ?

• G06V 20/52 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects

Abstract

The present disclosure provides a fire-prevention and extinguishing material for plugging an air leakage in an underground barrier pillar of a coal mine and a use method thereof. The fire-prevention and extinguishing material for plugging the air leakage includes an upper fabric layer, an intermediate layer, and a lower fabric layer. A plurality of fiber filaments are evenly distributed in the intermediate layer such that the intermediate layer has a flexible deformability. The intermediate layer is filled with a cement powder. The upper fabric layer is made of a flame-retardant flexible material. The upper fabric layer is configured to deform under a pressure to block off oxygen and plug the air leakage in the underground barrier pillar. The lower fabric layer is made of a water-soluble material.

IPC Classes  ?

• E21F 5/08 - Rock dustingDepositing other protective substances

Abstract

A sealing structure of an underground high-pressure gas storage and a construction method thereof are provided. The sealing structure includes an annular lining structure, wherein the annular lining structure is surrounded by a plurality of concrete segments; closed steel sheets; the closed steel sheets are arranged at an inner side of the annular lining structure and used for connecting two adjacent concrete segments and plugging a gap between two adjacent concrete segments; and a sealing layer, wherein the sealing layer is arranged close to the inner side of the annular lining structure and forms a coating with the annular lining structure on the closed steel sheets.

IPC Classes  ?

• F17C 1/00 - Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge

Abstract

The present invention introduces an intelligent coal gangue washing method guided by deep reinforcement learning and evolutionary computation. It involves several steps: S1 involves installing various sensors at key control points of a jig to achieve comprehensive, real-time data acquisition and maintain consistent data collection frequencies; S2 includes gathering data on a server via OPC protocol, using deep reinforcement learning to devise control strategies for jig operations under good communication, and employing evolutionary algorithms when communication is disrupted; S3 entails sending these control strategies back to the control unit through OPC protocol, enabling automated operation of the jig. This method enhances jig operation efficiency through intelligent control, utilizing deep learning, evolutionary computation, and surrogate models to optimize performance even when operational data is incomplete.

IPC Classes  ?

• C10L 5/04 - Raw material to be usedPretreatment thereof

Abstract

Disclosed in the present invention is a lightweight active online modeling method fusing mechanism and dynamic memory, which comprises the following steps: S1, data preprocessing and model initialization; S2, online data representativeness evaluation based on dynamic memory of process data; S3, online data informativeness evaluation based on dynamic memory of label data; S4, online monitoring of a mechanism state; S5, parallel hybrid active sampling policy; and S6, online modeling of a soft sensor model. The present invention separately designs memory policies for process data and label data and only reserves high-value data, thereby satisfying a lightweight hardware requirement; in addition, the present invention designs a time delay-based mechanism state online monitoring method to detect a real concept drift of the process, and further provides the parallel hybrid active sampling policy for detecting both a real concept drift and a false concept drift; in combination with dynamic memory and a kernel incremental regression method, the computation amount for model updating and the hardware overhead for edge deployment are reduced.

IPC Classes  ?

• G06F 18/25 - Fusion techniques

Abstract

Disclosed in the present invention is an underground monorail crane wireless sensor monitoring network, comprising a coordinator aggregation node, a data display and processing device, and a plurality of brake block monitoring nodes, pull rod stress monitoring nodes, compartment vibration monitoring nodes and routing relay nodes; the brake block monitoring nodes, the pull rod stress monitoring nodes and the compartment vibration monitoring nodes are respectively in communication connection with the routing relay nodes by means of universal communication control modules; the routing relay nodes are in communication connection with the coordinator aggregation node by means of universal communication control modules; the coordinator aggregation node is in communication connection with the data display and processing device by means of a universal communication control module. In the present invention, the nodes are distributed at all positions of the body of a locomotive for monitoring the braking, vibration and pull rod states of a monorail crane, so as to compensate for monitoring defects of electrical control systems, and node monitoring data and locomotive electrical control system data are uploaded to a locomotive control room by means of wireless communication base stations in mine roadways, thus achieving real-time monitoring of the operating state of monorail cranes.

IPC Classes  ?

• H04W 4/38 - Services specially adapted for particular environments, situations or purposes for collecting sensor information

Abstract

Provided is a method for upgrading a coal slime through synergistic dehydration, including: subjecting coal slime water to be treated to filter pressing dehydration to obtain a filter cake; and crushing the filter cake, sieving and sizing, and subjecting a resulting oversize to steam transient dehydration to obtain a dehydrated coal slime.

IPC Classes  ?

• C10L 1/32 - Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions
• B01D 25/12 - Filter presses, i.e. of the plate or plate and frame type
• B03B 9/00 - General arrangement of separating plant, e.g. flow sheets

Abstract

An optical fiber sensing method and sensing system for straightness of the scraper conveyor is provided. The sensing method includes the following steps: obtaining the horizontal strain and vertical strain of the corresponding grating measuring point of the scraper conveyor by the optical fiber shape sensor; calculating the horizontal curvature and vertical curvature of the grating measuring point; inserting multiple interpolation nodes between the curvature values of two adjacent grating measuring points; transforming the horizontal curvature and the vertical curvature into the horizontal coordinate value in the horizontal coordinate system and the vertical coordinate value in the vertical coordinate system respectively; superimposing the horizontal coordinate value and the vertical coordinate value to obtain the three-dimensional spatial coordinate values of the grating measuring point and the interpolation node; and obtaining the curves of the optical fiber shape sensor on the horizontal plane, the vertical plane, and the three-dimensional space respectively.

IPC Classes  ?

• G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
• G01B 11/27 - Measuring arrangements characterised by the use of optical techniques for measuring angles or tapersMeasuring arrangements characterised by the use of optical techniques for testing the alignment of axes for testing the alignment of axes
• G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis

Abstract

Provided are a device for vortex flotation mineralization based on confined space and a method for mineralization. The device includes a mineralizer body. An interior of the mineralizer body includes a mineralization cylinder for mineralizing minerals. A mineral inlet is provided on a sidewall at a bottom of the mineralization cylinder and a mineral outlet is provided on the sidewall at a top of the mineralization cylinder. The mineral inlet includes at least two inlet pipes arranged opposite to each other such that a mineral slurry enters the mineralization cylinder in a form of a collision flow. The device includes an air pipeline and a stirring device. The air pipeline is connected to the mineral inlet and configured to inject air into the mineral slurry. The stirring device is arranged inside the mineralization cylinder and provided with a mineralization impeller for stirring.

IPC Classes  ?

• B03D 1/14 - Flotation machines
• B03D 1/22 - Flotation machines with impellersSubaeration machines with external blowers

Abstract

The invention discloses a parallel evolutionary solution method for search space segmentation, comprising: S1, randomly generating solution schemes via a search space sampling and segmentation module, calculating fitness values by combining initial sample schemes with an optimization objective function, statistically screening sample schemes, determining the dimension direction K of the segmented search space, and dividing the search space into subspaces; S2, executing a global search algorithm in the segmented subspaces to obtain a global initial solution scheme; S3, using the global initial solution scheme as a starting point, obtaining a precise solution scheme via a local search algorithm. This method employs evolutionary sampling of the search space, deriving fitness terrain analysis results, and guiding the division direction and step size of the search space. Multiple search subspaces are segmented to enable parallel search for subsequent evolutionary calculations.

IPC Classes  ?

• G06F 17/11 - Complex mathematical operations for solving equations

Abstract

The present disclosure discloses a scene self-adaptive method for controlling an unmanned driving of a monorail hoist transportation robot. The method comprises the following steps: constructing an industrial internet of things platform for a monorail hoist; constructing a digital twin system for the monorail hoist; controlling a virtual unmanned driving of the monorail hoist; establishing a shadow following model for the monorail hoist; controlling an entity monorail hoist in real time by a virtual monorail hoist; comparing the entity monorail hoist driven by data with the monorail hoist driven by a driver with the shadow following mode; and designing a self-adaptive program for complex scenes: improving a loading velocity of a new roadway scene through merging root nodes and compressing data, implementing an environment self-adaptation, a platform self-adaptation, and a terminal self-adaptation.

IPC Classes  ?

• B66C 13/48 - Automatic control of crane drives for producing a single or repeated working cycleProgramme control
• B66C 13/46 - Position indicators for suspended loads or for crane elements
• B66C 15/00 - Safety gear

Abstract

Disclosed is a vortex mineralization-static separation flotation device and a flotation method. The device comprises: a static separator provided with a separation chamber and a vortex mineralizer provided with a mineralization cylinder. The separation chamber includes a raw ore treatment pipeline and an intermediate ore treatment pipeline. The mineralization cylinder includes a vortex mineralization pipeline. The method comprises: the mineralization cylinder being full of a raw ore slurry and the raw ore slurry in the separation chamber reaching a set level, turning on air conduits and an agitation device to make air enter the mineralization cylinder and form tiny bubbles to collide with first mineral particles and mineralize to form an aerated intermediate ore slurry; the aerated intermediate ore slurry entering the separation chamber and performing collision and mineralization with second mineral particles and the raw ore slurry, and concentrate froth being formed at a top of the separation chamber to be collected.

IPC Classes  ?

• B03D 1/14 - Flotation machines
• B03D 1/02 - Froth-flotation processes
• B03D 1/08 - Subsequent treatment of concentrated product
• C22B 1/00 - Preliminary treatment of ores or scrap

Abstract

Disclosed in the present invention are a self-compensating moving coil guiding device for a large-scale shaker, and an operating method thereof. The device comprises a shaker body fixed to one side of a moving coil, wherein a piston cylinder is fixedly connected to an upper portion of the shaker body, a force transmission assembly is slidably provided in a cavity on the side in the piston cylinder that is close to the moving coil, one end of the force transmission assembly abuts against a piston head plate in the piston cylinder, the other end of the force transmission assembly extends from the piston cylinder and is in transmission connection with the moving coil by means of a toothed guide wheel mechanism, the cavity in the piston cylinder that is located on the other side of the piston head plate is a pressurizing cavity, and an oil/gas inlet is provided in a cavity wall of the pressurizing cavity; and an oil/gas compensation line connected to the oil/gas inlet in the pressurizing cavity. The present invention can solve the problems whereby under the working condition of a relatively large axial load, conventional guiding devices are prone to wear and loosening, need to rely on manual adjustments, and cannot compensate for the wear amount in real time; and the present invention can also perform wear monitoring on the toothed guide wheel mechanism, feed back in a timely manner the wear amount exceeding standard, and supply pressure to the pressurizing cavity by means of a miniature energy accumulator.

IPC Classes  ?

• B06B 1/00 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency
• G01M 7/02 - Vibration-testing

Abstract

Provided is a method and system for predicting a hydration reaction degree of cement based on a cycle generative adversarial network (CycleGAN). The method includes the following steps: S1, acquiring a micro-structure image of a cement paste test specimen; S2, establishing a micro-pore structure image dataset; S3, establishing a cement micro-hydration prediction model based on a CycleGAN; and S4, completing prediction based on a final cement micro-hydration prediction model. A deep learning algorithm is applied to micro-hydration prediction of cement. A complex theoretical formula is replaced with a data driven mode. Dependence on ideal hypotheses is reduced, and the accuracy of prediction on micro-hydration of cement is thus improved.

IPC Classes  ?

• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
• C04B 28/04 - Portland cements
• C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability

Abstract

A self-stabilizing integrally-molded pillar filling structure for underground mines is provided, belonging to the field of supporting structures, which includes an airbag, and the airbag is provided with a feed filling port and a gas inflation port; a telescopic bearing piece, and the telescopic bearing piece is fixedly provided on an inner surface of the airbag and is capable of expanding and contracting with volume change of an inner cavity of the airbag; and steel hoops, and the steel hoops are fixedly provided on an outer surface of the airbag.

IPC Classes  ?

• E21D 15/48 - Chocks or the like

Abstract

The present disclosure discloses a method for collaboratively controlling a multi-channel braking system of a mine hoist, including obtaining the abrasion loss of the brake shoe by detecting position information of the brake shoe of each of disc brakes in real time, dividing abrasion loss levels by determining different abrasion degrees of the brake shoe, formulating three braking force distributing modes: an average distribution, a proportional distribution, and an index distribution according to the abrasion loss levels, thereby dynamically adjusting a set braking pressure of each of the disc brakes, tracking and controlling the set braking pressure through the disc brakes by adopting a pressure closed-loop control method by utilizing a pressure signal feedback from an oil pressure sensor, implementing a collaborative braking control of the multi-channel braking system of the mine hoist based on the abrasion loss of the brake shoe.

IPC Classes  ?

• B66B 1/36 - Means for stopping the cars, cages, or skips at predetermined levels
• B66B 5/02 - Applications of checking, fault-correcting or safety devices in elevators responsive to abnormal operating conditions
• F16D 66/00 - Arrangements for monitoring working conditions of brakes, e.g. wear or temperature
• F16D 66/02 - Apparatus for indicating wear
• F16D 121/02 - Fluid pressure

Abstract

The present invention belongs to the technical field of mineral separation and processing. Disclosed is a circulating fluidized bed flotation device suitable for the recovery of coarse particles. The device comprises a first-stage fluidized bed flotation column (100), a second-stage fluidized bed flotation column (200) and a hydrocyclone (300), wherein the first-stage fluidized bed flotation column (100) is in communication with the second-stage fluidized bed flotation column (200) by means of the hydrocyclone (300). By means of the combined use of a high-speed ascending water flow and a low-speed ascending water flow and circulating fluidization flotation, the purposes of increasing the upper limit of flotation and broadening the size range of separation are achieved, and the recovery rate of coarse particles during flotation is improved on the basis of ensuring that both tailings and concentrates reach the standard. Also disclosed is a circulating fluidized bed flotation method suitable for the recovery of coarse particles.

IPC Classes  ?

• B03B 7/00 - Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage

Abstract

A vortex flotation beneficiation apparatus based on limited space, said apparatus comprising a beneficiation cylinder body (10), ore inlets (11) being formed on sidewalls at the bottom of the beneficiation cylinder body (10), an ore outlet (12) being formed on the sidewall at the top of the beneficiation cylinder body (10), and the ore inlets (11) comprising at least two oppositely-arranged inlet pipes, such that mineral ore pulp enters the beneficiation cylinder body in the form of collision flow. The vortex flotation beneficiation apparatus further comprises air ducts (20) and a stirring apparatus (30), the air ducts (20) being connected to the ore inlets (11) for feeding air into the ore pulp, the stirring apparatus (30) is disposed inside of the beneficiation cylinder body (10), the stirring apparatus (30) is provided with a beneficiation impeller (31) used for stirring, and the beneficiation impeller (31) is arranged above the path of the collision flow between the inlet pipes. Strong turbulence formed by means of the collision flow and an impeller-induced high-speed stirred flow leads to highly concentrated turbulent energy, and induces generation of small-scale turbulent micro-vortexes, which enhances fine particles to break through the limitation of fluid streamlines to collide with and attach to bubbles, thus achieving efficient beneficiation using fine particles with bubbles. Also disclosed is a beneficiation method for a vortex flotation beneficiation apparatus based on limited space.

IPC Classes  ?

• B03D 1/14 - Flotation machines

Abstract

A vortex mineralization-static separation flotation device, comprising: a static separator having a separation cavity (20) and a vortex mineralization device having a mineralization cylinder (30), wherein a raw-ore treatment line and a middlings treatment line are arranged in the separation cavity (20); a vortex mineralization line is arranged in the mineralization cylinder; an outlet (A2) of the raw-ore treatment line is connected to an inlet (B1) of the vortex mineralization line; an outlet (B2) of the vortex mineralization line is connected to an inlet (C1) of the middlings treatment line; raw-ore pulp enters the separation cavity (20) to obtain middlings ore pulp; the middlings ore pulp enters the vortex mineralization line for enhanced mineralization and then enters the middlings treatment line for separation; and finally, ore concentrates are collected at the top of the separation cavity (20). Minerals are sequentially subjected to countercurrent mineralization, cyclone mineralization and vortex mineralization in a flow direction, such that a corresponding turbulent dissipation cascade is enhanced and a turbulent vortex scale cascade is reduced, thus adapting to the mineralization and flotation of mineral particles of different particle sizes and achieving efficient flotation recovery. Also provided is a flotation method for the vortex mineralization-static separation flotation device.

IPC Classes  ?

• B03D 1/14 - Flotation machines

Abstract

The present disclosure provides a full-size separation and pre-enrichment process for coal-associated germanium-bearing minerals, including the following steps: S1: feed grading preparation; S2: X-ray separation: feeding an oversize material into an X-ray sorting unit (2) for separation; and S3: microbubble flotation: feeding an undersize material into a microbubble flotation unit for separation: S3.1: allowing the undersize material to pass through a crushing mill (7) and a grinding mill (8) successively to allow full cleavage, to obtain a ground product; S3.2: grading the ground product by a hydrocyclone (9), to feed an overflow product of the hydrocyclone into a microbubble flotation separation unit for separation, and return an underflow product of the hydrocyclone to the grinding mill (8) for regrinding; S3.3: feeding the overflow product of the hydrocyclone (9) and an agent into a forced stirring mineralization device (12) for stirring mineralization; S3.4: subjecting a mixture produced after the stirring mineralization to rough selection with a flotation machine (13); and S3.5: subjecting an overflow product of the flotation machine (13) to fine selection with a flotation column (16), such that the coal-associated germanium-bearing minerals are efficiently separated out.

IPC Classes  ?

• B02C 21/00 - Disintegrating plant with or without drying of the material
• B03B 7/00 - Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
• B03B 9/00 - General arrangement of separating plant, e.g. flow sheets
• B03D 1/02 - Froth-flotation processes
• B03D 1/14 - Flotation machines
• B03D 103/08 - Coal ores
• B04C 9/00 - Combinations with other devices, e.g. fans
• B07C 5/34 - Sorting according to other particular properties
• B07C 5/36 - Sorting apparatus characterised by the means used for distribution

Abstract

A flexible hollow anchor rod allowing for digital monitoring, and a construction method. In the anchor rod, a flexible hollow rod body (1) is formed by a hollow steel pipe (1.2c) and a steel strand (1.2); a hollow anti-torsion sleeve (1.1) sleeves a left end of the flexible hollow rod body (1) by means of a friction increase wire spring (1.3); a slurry stop plug (1.5) is mounted at an end portion of the hollow anti-torsion sleeve (1.1); a centering locator (1.6) sleeves a right end of the flexible hollow rod body (1); a hole sealing sleeve (2) sleeves an outer side of the hollow anti-torsion sleeve (1.1); an anti-torsion tray (3) consists of a central tray body (3.1) and four stop columns (3.2) and sleeves a left end of an anti-torsion connecting section; and a fiber grating sensor (8) is arranged at an outer side of the rod body. The construction method comprises: drilling a stepped hole in rock mass; loading an anchoring agent, and sequentially placing the flexible hollow rod body (1), the anti-torsion tray (3), a ribbed tray (4), a centering ball head (5), an anti-wear washer (6) and a torque nut (7); stirring the anchoring agent, and completing fastening of the anchor rod; and accurately controlling the grouting reinforcement time, and completing lag grouting. By means of the fiber grating sensor, real-time monitoring of the state of the anchor rod can be achieved, and the advantages such as a high mounting speed, convenient grouting and high anchoring quality are achieved.

IPC Classes  ?

• E21D 21/00 - Anchoring-bolts for roof, floor, or shaft-lining protection
• E21F 17/18 - Special adaptations of signalling or alarm devices

Abstract

The present invention is applicable to the technical field of rail transit passenger flow clearing. Provided are a rail transit passenger flow clearing method and system, and an electronic device. The method comprises: when a train arrives at a station, identifying a train number, and acquiring train information; matching a specified train database on the basis of the train information; and when each passenger gets on and gets off the train, taking a whole-body photograph of the passenger, and recording getting-on and getting-off moments, so as to acquire a whole-body image of the passenger getting on the train, the getting-on moment of the passenger, a whole-body image of the passenger getting off the train, and the getting-off moment of the passenger. The method can perform a comparison on passengers who enter trains or walk out of the trains, so as to confirm which trains the passengers specifically ride, and the riding time and riding mileage of each passenger can be acquired, such that the passenger flow conditions of different trains on the same line can be analyzed more accurately during a subsequent clearing process, thereby improving the accuracy of passenger flow clearing.

IPC Classes  ?

• G06V 40/10 - Human or animal bodies, e.g. vehicle occupants or pedestriansBody parts, e.g. hands

Abstract

The present invention is suitable for the field of traffic dispatch, and provides a method and system for coordinated dispatch in rail transit emergency conditions. The method comprises: monitoring the operation state and location of a train in real time; simulating the operation location of the train in a tunnel; inferring the actual location of the train in the tunnel, analyzing the actual operation condition of the train, and carrying out recording when the train state is abnormal; and sending a dispatch policy to a rail station near the train by means of an information interface, and increasing the frequency of real-time monitoring of the rail station. In the absence of accurate train information, the location and operation state of the train can be obtained by means of simulation and a sound sensor, so as to provide more accurate dispatch basis and guarantee safe operation of the train. The method can solve the technical problems in the prior art of poor signals in tunnels and inability to obtain train information, and improve the emergency dispatch effect and accuracy.

IPC Classes  ?

• B61L 27/10 - Operations, e.g. scheduling or time tables

Abstract

Disclosed is a coal-gangue separation and floor paving integrated device suitable for roadway excavation, the device comprising a transport platform (2) on which a belt conveyor (1) is mounted, and further comprising a crushing device (3), spreading devices (4), a coal-gangue separation device (5) and a circular roadway floor paver (6), wherein the crushing device, the spreading devices, the coal-gangue separation device and the circular roadway floor paver are all sequentially mounted on the transport platform. The present device can effectively crush a mixture of coal and gangue and separate the gangue, and backfill the gangue into a circular roadway, thereby solving the technical problem of difficulties in storage, recycling and utilization of coal and gangue after mining.

IPC Classes  ?

• E21D 9/12 - Devices for removing or hauling away excavated material or spoilWorking or loading platforms
• B65G 69/04 - Spreading-out the materials conveyed over the whole surface to be loadedTrimming heaps of loose materials
• E21D 11/10 - Lining with building materials with concrete cast in situShuttering or other equipment adapted therefor
• B02C 4/08 - Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers

Abstract

A method and device for evaluating ecological cumulative effects of surface mining areas are provided. The method includes: constructing a surface mining areas eco-environmental evaluation index (SMAEEI) suitable for semi-arid grasslands; constructing a first eco-environmental quality condition adjustment coefficient R(Si,j,th) based on the actual land cover classification result and the SMAEEI; obtaining the actual ecosystem service value ESV per unit area of the area to be evaluated in several years through the unit area ecosystem service value coefficient VCif of the area to be evaluated and the first eco-environmental quality condition adjustment coefficient R(Si,j,th); based on the time-series trajectory integral value of the actual ecosystem service value ESV per unit area and the ideal ecosystem service value ESV′ per unit area undisturbed by human beings, performing residual analysis to obtain the ecosystem service value accumulation induced by anthropogenic factors (ESVA-AF).

IPC Classes  ?

• G06Q 10/0639 - Performance analysis of employeesPerformance analysis of enterprise or organisation operations
• G06Q 50/02 - AgricultureFishingForestryMining

Abstract

Disclosed in the present invention are a high-frequency micro-amplitude vibration-assisted laser cladding device for a large-sized workpiece, and a method. Parallel multi-wave cams in the device are coaxially arranged with an equal phase difference and are mounted on a spindle of an upper static box body; the multi-wave cams are curtate epicycloidal gears; the parallel multi-wave cams and corresponding cantilever beams form an excitation source; corresponding cantilever beam groups are mounted inside a lower movable box body; an upper static box body assembly and a lower movable box body assembly form a moving pair in vertical close contact; the lower movable box body is mounted on a vibration bearing plate; the right end of the lower movable box body and a pair of high-natural-frequency springs are fixedly supported; the lower ends of the high-natural-frequency springs and a frame are fixedly supported; and the multi-wave cams are driven by an electric motor by means of belt pulleys. The amplitude of a machined part can be adjusted on the basis of requirements, and the vibration frequency of the machined part is changed by means of changing the number of multi-wave cams and the number of corresponding cantilever beams, such that the device is particularly suitable for vibration-assisted laser cladding so as to refine grains, release stress, homogenize phases and obtain a forged structure.

IPC Classes  ?

• C23C 24/10 - Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
• B22F 12/82 - Combination of additive manufacturing apparatus or devices with other processing apparatus or devices
• B22F 10/50 - Treatment of workpieces or articles during build-up, e.g. treatments applied to fused layers during build-up
• B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

Abstract

Disclosed in the present invention are a hydraulic support for solid waste cemented compact backfill mining, and a backfill method. The hydraulic support for backfill mining comprises: a support body portion, a solid backfill aggregate conveying portion, a composite backfill portion and a backfill feedback portion, wherein the composite backfill portion comprises a screw pressing device and a cementing slurry application device, the screw pressing device comprising a sliding base, a screw pressing assembly and a backfill isolation vertical plate, and the cementing slurry application device comprising a cementing slurry conveying line and a backfill area grouting pipe; and the backfill feedback portion comprises an optical fiber stress sensor and a liquid level sensor. By means of the screw pressing device first performing continuous backfill and compressing solid backfill aggregate to improve the degree of backfill compaction of the solid backfill aggregate, and then the cementing slurry application device applying cementing slurry to the backfill body of the solid backfill aggregate which has been primarily compressed and compacted, so as to fill gaps between solid backfill aggregate particles, in order to obtain a stable backfill body with a high degree of compaction, the present invention enables effective control of long-term slow ground deformation while controlling initial deformation of the backfill body.

IPC Classes  ?

• E21D 23/04 - Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of propsMeans for counteracting lateral sliding on inclined floor

Abstract

The present disclosure relates to an intelligent flotation dosing system and method based on detection of a flotation tailing slurry, and belongs to the technical field of flotation dosing. The present disclosure solves the problems such as lagging adjustment and inaccurate agent amounts of the manual adjustment for flotation dosing in the art. The intelligent flotation dosing system based on detection of a flotation tailing slurry provided in the present disclosure includes a flotation information acquisition unit, an ash content intelligent prediction unit, and a distributed control dosing unit, where the flotation information acquisition unit is configured to acquire information about a flow rate, a concentration, a coarse particle content, and an image of a slurry, the ash content intelligent prediction unit is configured to process the information about the flow rate, the concentration, the coarse particle content, and the image of the slurry to obtain an ash content of the slurry, and the distributed control dosing unit is configured to adjust a dosing amount according to the ash content of the slurry and a flow rate, a concentration, and a coarse particle content of the slurry. The present disclosure can allow the uninterrupted real-time monitoring of flotation parameters to adjust a dosing amount timely.

IPC Classes  ?

• B03D 1/14 - Flotation machines

Abstract

An integrated device of bi-directional ultrasonic rolling, powder spreading, and compaction for additive manufacturing is provided, including an integrated device of ultrasonic rolling and powder spreading, and a platform lifting device. The integrated device of ultrasonic rolling and powder spreading is located above the platform lifting device. It can achieve ultrasonic rolling composite additive manufacturing, synchronously carry out ultrasonic rolling strengthening during selective laser melting process, improve the performance of manufacturing components, and the integrated device of ultrasonic rolling and powder spreading can achieve bi-directional strengthening, powder spreading and compaction. The feeding device is used to spread the powder from above, and the reflux gas in the gas reflux channel can reduce the falling speed of particles with higher density in the composite material powder, enabling them to fall synchronously with small particles, reducing the phenomenon of composite material powder delamination caused by differences in particle density.

IPC Classes  ?

• B29C 64/218 - Rollers
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/214 - Doctor blades
• B29C 64/321 - Feeding
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor

Abstract

Segmented pulse fracturing method for coal-rock stratum directional long borehole in underground mine, and equipment. The method and the equipment can perform segmented pulse fracturing on a coal-rock stratum directional long borehole; by means of segmented fracturing, the shortcoming of unevenly distributed fractures present when a long borehole as a whole undergoes fracturing is effectively overcome, and the problem of fractures being externally dense and internally sparse is solved; at each segment, a coal rock mass is fatigued and damaged by means of high frequency pulsed water pressure, multidirectional hydraulic fractures not controlled by crustal stress are formed, primary fractures of the coal-rock stratum are activated, and a fracture network is formed; ultimately, the fracture networks of the segments extend and interconnect, and consequently uniformly distributed, intercommunicating dense fracture networks are formed in the directional long borehole. The present segmented pulse fracturing method causes a significant improvement in the fracturing effect of a long borehole; with the aid of a directional borehole drilling machine, the method is simple, work is convenient, the method is easy to perform, and safety and reliability are achieved.

IPC Classes  ?

• E21C 37/12 - Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid

Abstract

A fluidized coal mining method using energy storage of a coal seam, comprising the steps of mine shaft development, active coal uncovering, and fluidized coal mining. According to the method, a dynamic phenomenon is induced by means of active coal uncovering, a coal mining borehole (12) is established from the ground to a coal seam (1), hydraulic in-situ cutting is performed on the coal seam (1), a coal-rock mixture produced after hydraulic cutting flows into a roadway system along a floor roadway (4), and then coal, gangue, and water in the mixture are separated and are recycled in the subsequent coal mining process, achieving underground unmanned fluidized coal mining, and high crushing of coal bodies is achieved in the active coal uncovering process, thereby making hydraulic coal mining more efficient, and reducing the water resource consumption in the coal mining process.

IPC Classes  ?

• E21C 41/18 - Methods of underground miningLayouts therefor for brown or hard coal
• E21F 15/00 - Methods or devices for placing filling-up materials in underground workings
• E21D 1/00 - Sinking shafts

Abstract

A fluidized coal mining method utilizing self-energy storage of a coal seam is provided, and includes developing a mine roadway, uncovering coal actively, mining coal in fluidization, and backfilling a goaf. Dynamic phenomenon is induced by uncovering the coal actively, a coal-mining drilling well is established from a ground to the coal seam, and the coal seam is subjected to hydraulic in-situ cutting, and a coal-rock mixture subjected to hydraulic cutting flows into a roadway system along a floor roadway, and then coal, gangue and water in the mixture are separated and recycled in a subsequent circulating coal mining process.

IPC Classes  ?

• E21B 43/263 - Methods for stimulating production by forming crevices or fractures using explosives
• E21B 43/29 - Obtaining a slurry of minerals, e.g. by using nozzles
• E21C 41/18 - Methods of underground miningLayouts therefor for brown or hard coal

Abstract

A detection method for infrared thermal image damage area of coal rock includes: step 1: collecting and recording the infrared thermal image of coal rock in the process of loading destruction; step 2: processing a gray-scale transformation on the collected infrared thermal image of coal rock; step 3: denoising an infrared thermal image of coal rock after the gray-scale transformation by the dense residual image denoising algorithm of autocorrelation network; step 4: conducting an area segmentation on the infrared thermal image of coal rock after denoising to extract eigenvalues by using a coal-rock infrared thermal image damage area segmentation algorithm of improved encoder-decoder network; step 5: observing the damage area of coal rock. The detection method improves the denoising effect of the infrared thermal image of coal rock, strengthens the extraction of the characteristics of the damage area, and improves the accuracy of the segmentation.

IPC Classes  ?

• G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
• G01N 25/72 - Investigating presence of flaws
• G01N 33/24 - Earth materials
• G06T 7/00 - Image analysis
• G06V 10/26 - Segmentation of patterns in the image fieldCutting or merging of image elements to establish the pattern region, e.g. clustering-based techniquesDetection of occlusion
• G06V 10/30 - Noise filtering
• G06V 10/52 - Scale-space analysis, e.g. wavelet analysis
• G06V 10/77 - Processing image or video features in feature spacesArrangements for image or video recognition or understanding using pattern recognition or machine learning using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]Blind source separation
• G06V 10/80 - Fusion, i.e. combining data from various sources at the sensor level, preprocessing level, feature extraction level or classification level

Abstract

The disclosure belongs to the field of underground energy storage, and particularly provides a large-deformation underground energy storage device, including a body. The body includes a rubber sealing layer, a negative Poisson's ratio material layer, a large deformation concrete layer and rock layers sequentially nested from inside to outside; an internal storage space is formed in the rubber sealing layer, the negative Poisson's ratio material layer includes a plurality of negative Poisson's ratio material elements connected in sequence, and the large deformation concrete layer is cast from deformable concrete.

IPC Classes  ?

• B65G 5/00 - Storing fluids in natural or artificial cavities or chambers in the earth

Abstract

Disclosed are a construction robot for a combined supporting body made of a composite material and a construction method. The construction robot for a combined supporting body made of a composite material comprises a base, a lifting and walking apparatus, a top beam, a lifting cylinder, vertical pipe mechanical arms, and a centralized electronic control apparatus. The base comprises a left base and a right base which are symmetrically arranged on the left and right, as well as a connecting base fixedly connected to the left base and the right base. A notch structure penetrating through the top beam is disposed on a front portion of the top beam. The vertical pipe mechanical arms, which are symmetrically arranged on the left and right, are mounted on the left base and the right base, respectively, a pipe holding manipulator is disposed on a tail section of each vertical pipe mechanical arm, each vertical pipe mechanical arm comprises an X coordinate driving assembly, a Y coordinate driving assembly, and a Z coordinate driving assembly, and each pipe holding manipulator is mountedly connected to a vertical pipe mechanical arm by means of an A coordinate rotation driving assembly capable of rotating and moving by using an X coordinate axis as a rotating axis coordinate. In the present invention, the degree of automation is high, vertical pipe operations can be completed automatically, and potential safety hazards in underground coal mine vertical pipe operations are greatly reduced, being particularly suitable for the construction technology of gob-side entry retaining and goaf reuse.

IPC Classes  ?

• E21D 23/04 - Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of propsMeans for counteracting lateral sliding on inclined floor

Abstract

Disclosed is a separated multi-core transmitting device based on a ground transient electromagnetic method, comprising: a rectangular transmitting coil enclosed by a cable I, a cable II, a cable III, and a cable IV. Each of the cable I, the cable II, the cable III, and the cable IV is provided with N wires. Two ends of each of the N wires is provided with a sub connector and a female connector, respectively. The sub connectors and the female connectors are detachably connected through sub connector interfaces and female connector interfaces. A first wire of the female connectors of the cable I is led out to serve as a positive electrode of a transient electromagnetic instrument transmitter, and a last wire of the sub connectors of the cable IV is led out to serve as a negative electrode of the transient electromagnetic instrument transmitter.

IPC Classes  ?

• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Abstract

The present disclosure relates to a full-size separation and pre-enrichment system and process for coal-associated gallium and lithium-bearing minerals, and belongs to the technical field of mineral separation. The present disclosure solves the problem that the existing technologies have a low separation efficiency for coal-associated gallium and lithium-bearing minerals. The system of the present disclosure includes a feed grading preparation unit, an X-ray separation unit, and a microbubble flotation unit, where the X-ray separation unit and the microbubble flotation unit both are arranged downstream from the feed grading preparation unit, and the feed grading preparation unit is configured to grade the coal measures rich in strategic gallium and lithium metals to obtain an oversize material and an undersize material, where the oversize material is fed into the X-ray separation unit for separation and the undersize material is fed into the microbubble flotation unit for separation. The present disclosure can efficiently separation coal-associated gallium and lithium-bearing minerals.

IPC Classes  ?

• B03B 7/00 - Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
• B03B 9/00 - General arrangement of separating plant, e.g. flow sheets
• B03D 1/02 - Froth-flotation processes
• B07C 5/34 - Sorting according to other particular properties

Abstract

The application discloses a system and method for centrifugal intrusion of molten metal into porous media and then solidification positioning, including: test cups, used for placing test medium and molten metal intrusion; a rotor block, used for mounting the test cups, where one end of each test cup for placing the test medium is far away from the rotor block; a constant temperature oil bath preheating device, used for preheating the test cups and the rotor block; a centrifugal device, internally provided with the rotor block, used for performing a centrifugal operation on the test cups, where the test cups and the rotor block are installed inside the centrifugal device after being preheated; and an infrared heating and compression refrigerating device, arranged inside the centrifugal device, used for controlling a temperature of the test cups.

IPC Classes  ?

• B22D 13/12 - Controlling, supervising, specially adapted to centrifugal casting, e.g. for safety reasons
• B22D 41/01 - Heating means

Abstract

A device for detecting a composite rock stratum structure while drilling, and an intelligent identification method. The device comprises an apparatus base (8), wherein a vertically arranged supporting rod is fixedly connected to the middle portion of the apparatus base (8), a drilling hydraulic oil cylinder (4) is fixedly connected on one side of the bottom of the supporting rod, and a piston end of the drilling hydraulic oil cylinder (4) is fixedly connected to an adaptive while-drilling data acquisition module (5) and is in sliding connection with the supporting rod; a sample table (1) is arranged above the adaptive while-drilling data acquisition module (5) and is fixedly connected to the supporting rod, and a top limiting system (3) is fixedly connected to the top end of the supporting rod; and a rock gripper (2) is arranged between the sample table (1) and the top limiting system (3), and the adaptive while-drilling data acquisition module (5), a data acquisition device (9) and a data analysis terminal (10) are all electrically connected to each other. A real mechanical environment of a coal mine site is reproduced, multiple parameters are acquired by means of the adaptive while-drilling data acquisition module (5), and the property parameters of a composite rock stratum are represented by using a machine learning method, so as to achieve the intelligent identification of rock lithology, such that support can be provided for intelligent control of surrounding rock of a coal mine roadway.

IPC Classes  ?

• G01N 33/24 - Earth materials

Abstract

The present invention discloses an interactive behavior understanding method for posture reconstruction based on skeleton and image features. The steps are as follows: constructing and preprocessing the data set, extracting skeleton and image features, fusing and reconstructing these features, and conducting experimental evaluation and validation. This method retains the purity of skeleton features for human behavior information extraction and uses image features to retain effective environmental information, complementing the model feature information. Skeleton features are extracted using a graph convolution network, enhancing the relevance of input skeleton point information for accurate feature extraction. Effective image features are quickly and accurately extracted through the Vision Transformer network combined with a multi-head attention mechanism.

IPC Classes  ?

• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
• G06T 5/10 - Image enhancement or restoration using non-spatial domain filtering
• G06T 5/20 - Image enhancement or restoration using local operators
• G06V 10/44 - Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersectionsConnectivity analysis, e.g. of connected components
• G06V 10/80 - Fusion, i.e. combining data from various sources at the sensor level, preprocessing level, feature extraction level or classification level

Abstract

A constant-speed dynamic direct-shear test system and a test method for a rock mass structural plane are provided in the disclosure; the system includes a bearing frame, a loading frame, a horizontal loading device, a normal loading device, an oil supply device and a digital controller; a shear box is arranged in the loading frame, and the loading frame is fixedly connected with a top surface of one end of the bearing frame; the oil supply device and the horizontal loading device are controlled by the digital controller and output shearing force, the normal loading device is arranged on the loading frame and provides normal force to the shear box.

IPC Classes  ?

• G01N 3/24 - Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces

Abstract

The disclosure discloses a device for detecting idling time of a brake shoe of a monorail hoist and a detection method thereof. The device includes a contact detection unit, a common end roller unit, an idling time detection unit and detection lines. The contact detection unit installed on a brake of the monorail hoist includes a tube in connection with the brake shoe. The common end roller unit is installed on a frame of the monorail hoist and corresponds to a travelling track. A metal probe corresponding to the travelling track is arranged inside the tube. A limiting bolt corresponding to a raised cylindrical block formed on the metal probe is formed on an inner side wall of the tube. The metal probe is contactable with the travelling track or the limiting bolt when the brake shoe brakes.

IPC Classes  ?

• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
• B61H 7/04 - Scotch-blocks, skids, or like track-engaging shoes attached to railway vehicles
• B66C 15/06 - Arrangements or use of warning devices

Abstract

A self-adaptive cooling system for an armature of a high-force electrodynamic shaking platform, comprising: a water tank (11), a filter (8), a hydraulic pump (9), a driving coil and a heat exchanger (10), which are sequentially connected in series by means of pipelines to form a circulation loop, the hydraulic pump (9) being equipped with a driving motor (7), and the driving coil having a spiral tubular structure, with a first water inlet and outlet port (4) and a second water inlet and outlet port (3) formed at both ends, respectively, and a third water inlet and outlet port (1) provided at the center. The cooling system further comprises: a three-position, four-way reversing valve (5) disposed on a pipeline connecting the hydraulic pump (9) and the driving coil, and three temperature sensors (2) disposed at the three water inlet and outlet ports (1, 3, 4), respectively; a current sensor disposed on the driving coil; and a controller used to change the rotating speed of the driving motor (7) and the flow direction of water flow in the driving coil. The cooling system is capable of adaptively adjusting the rotating speed of the driving motor (7) and controlling the flow of cooling water, thereby improving the utilization efficiency of the cooling system.

IPC Classes  ?

• F25D 17/02 - Arrangements for circulating cooling fluidsArrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine

Abstract

An intelligent gas mining method for a closed working face of a high-gas coal seam (4). A high-gas coal-mining working face (21) and a goaf (20) are fully closed to form a sealed space (23), such that a ventilation system and a gas drainage borehole are eliminated; and no outside air enters the sealed space and oxygen therein is reduced, by means of extraction, to be close to zero, such that the coal-mining working face (21) is in an oxygen-isolated state during a subsequent coal-mining process. Therefore, the risks of spontaneous combustion of coal and explosion of gas and coal dust are fundamentally eliminated, the mining takeover speed is greatly increased, and the construction cost of a mine is reduced. In addition, during subsequent coal mining in the sealed space (23), desorbed gas is directly discharged to the coal-mining working face (21) and the sealed space (23), and in this case, the gas is drained by means of a gas drainage pump station (26), such that the gas utilization rate is greatly improved, and the gas drainage of the whole high-gas coal seam (4) is finally realized; moreover, coal mining can be performed during drainage, such that the gas drainage efficiency is ensured, and the coal-mining amount is also guaranteed.

IPC Classes  ?

• E21F 7/00 - Methods or devices for drawing-off gases with or without subsequent use of the gas for any purpose
• E21F 17/103 - Dams, e.g. for ventilation
• E21F 17/12 - Dam doors
• E21F 17/18 - Special adaptations of signalling or alarm devices

Abstract

The present invention provides a multi-wavelength spectral thermometry based on mobile narrow-band window and optimization and belongs to the field of thermal radiation temperature detection. A continuous spectrum of a thermal radiation object is collected by a spectrometer; the spectrum of the thermal radiation object is denoised, windowed and standardized; the whole detection wavelength range is traversed within an appropriate narrow-band window; through comparison with windowed and standardized black-body radiation spectra at different temperatures in a corresponding spectral window, the temperature and emissivity distribution of the thermal radiation object is calculated with high accuracy without depending on emissivity model estimation, and high universality and noise resistance are achieved.

IPC Classes  ?

• G01J 5/48 - ThermographyTechniques using wholly visual means
• G01J 5/53 - Reference sources, e.g. standard lampsBlack bodies

Abstract

A joint imaging system based on unmanned aerial vehicle platform and an image enhancement fusion method are provided. The system includes a flying unit as a load platform, a shutter control system for controlling the operation of a load camera, a posture control system for recording the movement track and POS data of the flying unit, an airborne image transmission system for communicating with ground equipment, and an onboard computing unit with an image processing module for receiving the output images and performing image processing and fusion.

IPC Classes  ?

• G06T 5/50 - Image enhancement or restoration using two or more images, e.g. averaging or subtraction
• B64U 20/87 - Mounting of imaging devices, e.g. mounting of gimbals
• G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
• G03B 15/00 - Special procedures for taking photographsApparatus therefor
• G06T 3/40 - Scaling of whole images or parts thereof, e.g. expanding or contracting
• G06T 5/80 - Geometric correction
• G06T 7/13 - Edge detection
• G06T 7/33 - Determination of transform parameters for the alignment of images, i.e. image registration using feature-based methods
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
• G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
• H04N 23/11 - Cameras or camera modules comprising electronic image sensorsControl thereof for generating image signals from different wavelengths for generating image signals from visible and infrared light wavelengths
• H04N 23/16 - Optical arrangements associated therewith, e.g. for beam-splitting or for colour correction
• B64U 101/30 - UAVs specially adapted for particular uses or applications for imaging, photography or videography

Abstract

A device for real-time detection of pipeline gas leakage and leakage prevention includes a gas pipeline, wherein a gas detector is arranged at an outer part of the gas pipeline, a telescopic cylinder is also electrically connected to an outer side of the gas detector, a plurality of three-way elliptical pipes are mounted at a middle segment part of the gas pipeline, a limiting cylinder is fixedly mounted at a bottom port of each three-way elliptical pipe, a separating mechanism is arranged between each limiting cylinder and the three-way elliptical pipe, and a pneumatic mechanism is arranged at a bottom of the limiting cylinder. After detecting gas leakage, the gas detector immediately triggers the telescopic cylinder through an electrical signal, and the pneumatic mechanism triggers the separating mechanism to separate and seal the three-way elliptical pipe when being driven by the telescopic cylinder.

IPC Classes  ?

• G01M 3/22 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for valves
• F17D 5/02 - Preventing, monitoring, or locating loss

Abstract

44222444 extraction efficiency of the coal seam sections of the stacked coal seams.

IPC Classes  ?

• E21B 43/26 - Methods for stimulating production by forming crevices or fractures
• E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons
• E21B 43/14 - Obtaining from a multiple-zone well

Abstract

The present invention belongs to the technical field of coal mine geology and safety. Provided are a coal seam gas pressure and permeability synchronous inversion method, solving the problem of existing testing methods being incapable of synchronously acquiring the coal seam gas pressure and permeability. The technical solution comprises: constructing a borehole underground and sealing the borehole, and measuring gas flows at the borehole opening; constructing a double-hole/double-permeability gas-solid coupling mathematical model, and, according to a geometric model and a boundary condition, performing numerical calculation to obtain a simulation value of the borehole gas flow; constructing an objective function according to an actual measured value and the simulation value of the borehole gas flow, and performing inversion by using a proxy optimization algorithm so as to obtain the original gas pressure and permeability of a coal seam. The present invention has the beneficial effects of: simple implementation steps, inversion results being stable and accurate, being capable of accurately reflecting actual changes of the borehole flow, short test cycles, manpower and material resource conservation, high automation degree, and being suitable for boreholes under the working conditions of crossing seams and being along seams.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation

Abstract

Disclosed are a hydraulic fracturing and cutting cooperative device suitable for a hard rock and a use method thereof, belonging to the technical field of high-efficiency and rapid excavation of hard rock roadway (tunnel). The hydraulic fracturing and cutting cooperative device suitable for a hard rock provided by the disclosure includes a drill pipe, a pneumatic drilling system, a hydraulic fracturing system, a collaborative control system and a cutting head.

IPC Classes  ?

• E21B 43/114 - Perforators using direct fluid action, e.g. abrasive jets
• E21B 4/02 - Fluid rotary type drives
• E21B 43/26 - Methods for stimulating production by forming crevices or fractures

Abstract

The disclosure discloses a system for controlling a multi-point synchronous braking of a monorail hoist and a utilization method thereof. The system comprises a contact detection unit, a common end roller unit, a hydraulic unit, a synchronous control unit and connection cables. The contact detection unit is installed on a brake shoe of a monorail hoist. The common end roller unit is installed on a travelling track and connected with a frame of the monorail hoist. The contact detection unit includes a tube in connection with the brake shoe. A metal probe corresponding to the travelling track is arranged inside the tube. A circular boss is formed on the metal probe. A limiting bolt corresponding to the circular boss is formed on an inner side wall of the tube. The metal probe is contactable with the travelling track or the limiting bolt when the brake shoe brakes.

IPC Classes  ?

• B61H 7/12 - Grippers co-operating frictionally with tracks
• F16D 66/02 - Apparatus for indicating wear

Abstract

A method for simulating and predicting deep reservoir structural fractures in consideration of thickness change is disclosed. The method firstly calculates a structural fracture apparent density by using a stress-based reservoir structural fracture prediction formula group, secondly obtains structural fracture linear density based on simulation experiment, thickness unit division and reservoir structural fracture prediction optimization formula, finally carries out a reliability judgment based on the structural fracture linear density, the apparent density and the measured inspection values by using parameter inspection and error analysis. The above method can effectively reduce the difficulty and cost of energy development.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation

Abstract

The present invention relates to the technical field of hydrogen energy, and in particular to a methane reformer with a long service life and a method for using same. A structure formed by combining a main gas channel (2) and a branch gas channel (3) is built in the reformer, catalyst particles (4) are filled outside the gas channels, the frustoconical branch gas channels (3) are spaced apart from each other in a gas flow direction, the main gas channel (2) is tapered in the gas flow direction, inert particles (5) are filled in the gas channels, and the porosities of the interior and exterior of the gas channels are the same. On the basis of carbon deposition dynamics, the evolution of the structure of a porous catalytic region and theories of porous medium fluid mechanics, without changing external conditions and a conversion rate of the reformer, in the case of partial blockage caused by carbon deposition, a flow is forced to redirect automatically and flows into the next branch gas channel (3) in sequence by means of arrangement of the main gas channel (2) and the branch gas channel (3) in the reformer, such that the main position where reforming reaction occurs is automatically adjusted, and the service life of the reformer is prolonged.

IPC Classes  ?

• C01B 3/38 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts

Abstract

The present invention relates to a mine stress field twin modeling assimilation system for a full space-time mining process, and a method, and belongs to the technical field of digital twin assimilation inversion. The system comprises a digital model unit, a physical model unit and a human-computer interaction unit. The digital model unit is provided with an equal-proportion three-dimensional geological model, a mine historical assimilation model and a trusted digital twin model; the physical model unit covers a stratum and a mining face tunnel system, and the human-computer interaction unit has an information database and a software simulation monitoring interface. By means of a software establishment model, assimilation technology optimization model operation and a digital twin technology interconnection physical entity and virtual model, the present invention is able to construct a mine in-situ stress field twin model aimed at a full space-time mining process and better approximating reality, and is likewise able to use real physical scene monitoring data to perform simulated pre-mining in a virtual spatial model, aimed at grasping the space-time evolution laws of stress fields in the mining process, and providing guidance for safe mining production.

IPC Classes  ?

• G06F 30/17 - Mechanical parametric or variational design
• G06T 17/05 - Geographic models

Abstract

A pipeline gas leak real-time detection and leak prevention device and a use method, the pipeline gas leak real-time detection and leak prevention device comprising a gas pipeline (1), the outside of the gas pipeline (1) being provided with a gas detector, and the outer side of the gas detector being electrically connected to a telescopic cylinder. A plurality of three-way oval pipes (2) are mounted in the middle section of the gas pipeline (1), the three-way oval pipes (2) being docked with the gas pipeline (1) via flange connectors (3); a stopper tube (4) is fixedly mounted at a bottom port of each three-way oval pipe (2), and a partition mechanism is provided between the stopper tube (4) and the three-way oval pipe (2); the bottom of each stopper tube (4) is provided with a sleeve cover (5), the bottom of the sleeve cover (5) being communicated with an air pipe (6); the air pipes (6) are communicated with an output end of a communicating component (7); an input end of the communicating component (7) is provided with an air delivery pipe (12), one end of the air delivery pipe (12) being provided with a second one-way air valve (14) and the other end being provided with an air tube (8); a piston block (9) is slidably embedded inside the air tube (8), and a push rod (11) that slidably passes through the air tube (8) is fixedly mounted on one end of the piston block (9), the other end of the push rod (11) being fixedly connected to an output end of the telescopic cylinder; the end of the air tube (8) close to the air delivery pipe (12) is provided with a first one-way air valve (13); the push rod (11) can be driven by the telescopic cylinder to trigger the partition mechanisms to block and seal the three-way oval pipes (2), so as to achieve segmented sealing of the gas pipeline (1) to prevent large-amount leaks of combustible gases, thus greatly reducing potential safety hazards.

IPC Classes  ?

• F17D 5/02 - Preventing, monitoring, or locating loss
• F16K 7/10 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with inflatable member
• F16L 55/124 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced radially into the pipe or hose

Abstract

ww1L2L222 of the remaining material that can be excavated by the mining electric excavator bucket, and using said volume as an objective function of secondary excavation; and using the ending point of an avoidance path as a starting point of secondary excavation, and replanning an excavation trajectory to continue excavation so as to complete the whole excavation operation. The present invention can effectively ensure the fillability of buckets and the energy utilization efficiency of mining electric excavators.

IPC Classes  ?

• E02F 9/20 - DrivesControl devices
• G06V 10/40 - Extraction of image or video features
• G06V 10/24 - Aligning, centring, orientation detection or correction of the image
• G06V 20/56 - Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle

Abstract

www2w2w2(x, t), so as to continue to complete the whole excavation operation. The present invention can realize an automatic excavation operation of the mining electric shovel and automatically avoid obstacles such as a large coal rock.

IPC Classes  ?

• E02F 9/20 - DrivesControl devices
• E02F 9/24 - Safety devices
• E02F 9/26 - Indicating devices
• G06T 17/00 - 3D modelling for computer graphics
• G06T 7/593 - Depth or shape recovery from multiple images from stereo images

Abstract

The present invention discloses a charging device and method for open pit mine rock perforation blasting within the mining technology domain. The charging device includes a charging barrel with a detachable cover plate at the top and a bottom opening, housing a tray for explosive material. A jacking mechanism on the tray's side surface aids in positioning. A flexible interval gasbag separates the explosive and tray, with a wire passing hole at its center connected to an air pump via an inflation tube. A pressing plate and lifting mechanism in the cover plate facilitate lifting within the barrel. Additionally, a moving mechanism on the blast hole's top relocates the charging barrel. This innovation addresses challenges related to the cumbersome positioning and filling of existing powder explosives in open pit mine rock perforation blasting.

IPC Classes  ?

• F42D 1/08 - Tamping methodsMethods for loading boreholes with explosivesApparatus therefor
• F42D 1/22 - Means for holding or positioning blasting cartridges or tamping cartridges in boreholes
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Abstract

An online stress monitoring system is used to obtain a stress distribution of each position, a geophone monitoring system is used to monitor high-frequency vibration signals produced by coal and rock fracture, a support resistance monitoring system is used to monitor working resistance of hydraulic supports in a working face, a well-ground joint microseismic system is used to monitor low-frequency vibration signals produced by the coal and rock fracture, and realize position of a microseismic source and inversion imaging of mining fractures, and an anchor stress monitoring system is used to monitor stress states of anchor bolts and cables. A data processing center is used to comprehensively process data obtained from the above five systems using an early warning model, thereby to obtain a prediction result of rock burst and determine whether to make early warning, thus workers can take timely measures according to the early warning situation.

IPC Classes  ?

• G01V 1/30 - Analysis
• G01V 1/18 - Receiving elements, e.g. seismometer, geophone
• G01V 1/28 - Processing seismic data, e.g. for interpretation or for event detection
• G01V 1/34 - Displaying seismic recordings

Abstract

A mine digital model construction method based on a three-dimensional point cloud database is disclosed. Mine data resources are collected, valid coordinate point position information is extracted according to point cloud data extraction standards, and a mine three-dimensional point cloud database is established; a model of rock strata boundary surfaces, mining areas, and tunnels is constructed, a surface three-dimensional geological model is constructed, and a mine three-dimensional geological model is further constructed; and division into grids is performed to obtain a mine extraction inversion digital model. According to the method, a mine three-dimensional point cloud database can be obtained, and various identified rock strata topographies, positions of mining areas and tunnels, fault morphologies, and surface morphologies can be restored; mine extraction inversion digital models having different precisions can be constructed, a foundation is laid for crustal stress field inversion, and a reliable basis is provided for mine disaster prevention and control.

IPC Classes  ?

• G06T 17/05 - Geographic models
• G06F 16/28 - Databases characterised by their database models, e.g. relational or object models
• G06T 17/20 - Wire-frame description, e.g. polygonalisation or tessellation

Abstract

Disclosed in the present invention is a visual monitoring method for cross-section temperature fields and radiation characteristics of boiler furnaces by combining radiation images and spectra. Image detectors can be directly inserted into observation holes of a boiler to acquire flame image data, so that when the detection system is applied to a power station boiler, extra holes are not required to be drilled, and therefore, there is no risk that the strength of a furnace wall of the boiler is reduced by drilling holes. According to cross-section temperature fields of a furnace measured by the detection system, the state of combustion in the furnace can be accurately judged, which can play an accurate and effective guiding role in boiler combustion control, and reduce the temperature deviation in each combustion area of the boiler so as to keep the boiler running smoothly, thereby improving the combustion efficiency of the boiler.

IPC Classes  ?

• G01J 5/07 - Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position
• G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry
• G01J 5/08 - Optical arrangements
• G01J 5/0802 - Optical filters
• G01J 5/10 - Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
• G01J 5/48 - ThermographyTechniques using wholly visual means
• G01J 5/60 - Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature
• G01J 5/80 - Calibration

Abstract

The present disclosure discloses a method for positioning an auxiliary transportation vehicle in a coal mine and a positioning system thereof. The method comprises: acquiring a rotation velocity of each wheels and a rotation angle of a steering wheel, constructing a kinematics model based on wheels not for steering of the vehicle and a kinematics model based on wheels for steering of the vehicle respectively, and constructing a kinematics model based on a geometric center of the vehicle according to the above two kinematics models; and according to a travelling condition of the vehicle, integrating the kinematics model based on the geometric center with a strap-down inertial navigation system for positioning, when the vehicle is in a normal travelling state; and integrating, the kinematics model based on the wheels not for steering with the strap-down inertial navigation system for positioning, when the vehicle is in an abnormal travelling state.

IPC Classes  ?

• B61L 25/02 - Indicating or recording positions or identities of vehicles or trains

Abstract

The present disclosure provides a method, a system for dehydrating a gasification fine slag, and a medium thereof. The method is performed by a processor controlling a dehydration device or a detection device, and the detection device is configured to detect at least one of physical properties or chemical properties of a gasification fine slag to be dehydrated. The method includes controlling the detection device to determine characteristic parameters of the gasification fine slag to be dehydrated, and determining a judgmental characteristic index of a dehydration moder of the gasification fine slag to be dehydrated. The method includes determining a target dehydration device and controlling the target dehydration device to dehydrate the gasification fine slag to be dehydrated. The method further includes controlling the detection device to determine a residual moisture content of a dehydrated gasification fine slag, and determining whether to end a dehydration task.

IPC Classes  ?

• C04B 18/06 - Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
• C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
• C02F 1/00 - Treatment of water, waste water, or sewage
• C02F 11/122 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
• C02F 11/13 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by heating
• C02F 11/15 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fieldsTreatment of sludgeDevices therefor by de-watering, drying or thickening by treatment with ultrasonic waves
• C02F 103/34 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups
• C04B 5/06 - Ingredients, other than water, added to the molten slagTreatment with gases or gas generating material, e.g. to obtain porous slag

Abstract

A time domain electromagnetic tensor based logging method, relating to the field of induction logging. A transmitting coil system Tx and a receiving coil system Rx are each composed of three orthogonal direction coils, and the transmitting coil system and the receiving coil system form a borehole probe; a time domain electromagnetic field is excited by means of two orthogonal transmitting coil systems Tx, and a secondary field signal is received by two orthogonal receiving coil systems Rx located above transmitting coils and having a distance D; during each measurement, three directions are used for transmitting, nine component data is received at the same time, and each component is a series of induction potentials in one-to-one correspondence with measurement time sequences, and a potential or resistance change, from near to far, of the rock stratum where a measurement point is located is obtained after time-depth conversion.

IPC Classes  ?

• G01V 3/28 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device using induction coils
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction

Abstract

The present disclosure provides a cemented filling material with bionic structure, a preparation method and an application thereof, and belongs to the field of structural modification methods of cemented filling materials and research and development of civil materials with ultra-high energy absorption characteristics. The cemented filling material with bionic structure includes a bionic honeycomb skeleton and cemented filling slurry, where the cemented filling slurry is poured in the bionic honeycomb skeleton.

IPC Classes  ?

• E21F 15/00 - Methods or devices for placing filling-up materials in underground workings
• C04B 20/00 - Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups and characterised by shape or grain distributionTreatment of materials according to more than one of the groups specially adapted to enhance their filling properties in mortars, concrete or artificial stoneExpanding or defibrillating materials
• C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone
• C04B 111/20 - Resistance against chemical, physical or biological attack

Abstract

A shaft wall pressure corrosion test system includes a pressure bearing device, a confining pressure application device, and a seepage pressure application device. The confining pressure application device and the seepage pressure application device provide confining pressure and seepage pressure for the pressure bearing device, respectively, and keep the confining pressure and the seepage pressure constant on the pressure bearing device. In the system, axial pressure is applied to a piston by means of a hydraulic jack and is then transferred to a sample to complete axial pressure application. The confining pressure is applied to hydraulic oil by a manual pump in combination with an energy accumulator and then transferred to the sample to complete confining pressure application. The seepage pressure is applied to a corrosion solution by a water pump group in combination with an energy accumulator and then transferred to the sample to complete seepage pressure application.

IPC Classes  ?

• G01N 17/00 - Investigating resistance of materials to the weather, to corrosion or to light

Abstract

The present invention relates to the technical field of intelligent auxiliary transportation of coal mines. Disclosed are a multi-source-information-based decision-making system and method for a downhole unmanned vehicle. The system comprises a laser radar sensor, a millimeter wave radar sensor, an ultrasonic radar sensor, a binocular camera, an edge computing module, a CAN-to-Ethernet module, a switch and a vehicle-mounted industrial personal computer. In the present invention, data sensed by various sensors of a downhole unmanned vehicle are collected and summarized, and decision-making is performed on multi-source sensed information according to the performance of different sensors, such that the advantages of the different sensors are exerted; and efficient and accurate decision-making is performed on a downhole unmanned vehicle by using the multi-source sensed information, such that safe travel of a mine unmanned vehicle in underworkings is ensured, thereby realizing unmanned and flexible-manpower-line operation of the mine unmanned vehicle.

IPC Classes  ?

• G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots

Abstract

A GIS risk management and control system and method for pollutant migration in mining area basins, relating to the technical field of pollutant migration rule simulation. The system comprises a three-dimensional GIS function module, a hydrodynamic-water quality model coupling module, and a mine basin pollution risk management and control module. On the basis of basin hydrology theory and a pollutant migration diffusion mechanism, and taking into full consideration pollutant migration in a storage yard area with surface micro-runoff after rainfall, pollutant migration processes in mining areas under different precipitation intensities are simulated by means of using the law of micro-runoff formation, so that pollutant migration diffusion fluxes are calculated more accurately, thereby facilitating management and control of pollutant migration risks in the basin.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation
• G06T 17/00 - 3D modelling for computer graphics
• G06F 16/29 - Geographical information databases
• G06F 119/02 - Reliability analysis or reliability optimisationFailure analysis, e.g. worst case scenario performance, failure mode and effects analysis [FMEA]

Abstract

A drilling machine including a main body, an operating mechanism; a harmonic speed changer, a centralizer; a drainage tube controlling assembly; a dust collection device, a caterpillar track unit, a drill rod storage frame, and an electric motor-oil pump conversion box. The caterpillar track unit is fixed on both sides of the main body, to move the main body; the operating mechanism and the electric motor-oil pump conversion box are disposed on the main body; the main body includes a main frame provided with a mounting plate; the mounting plate is connected to the operating mechanism through a rotary speed changer; the electric motor-oil pump conversion box is disposed on one side of the operating mechanism. The operating mechanism includes a sliding frame assembly, a sliding guide rod, a propulsion cylinder, a compensating cylinder, and a power head.

IPC Classes  ?

• E21B 19/086 - Apparatus for feeding the rods or cablesApparatus for increasing or decreasing the pressure on the drilling toolApparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
• E21B 7/02 - Drilling rigs characterised by means for land transport, e.g. skid mounting or wheel mounting
• E21B 19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connectedHandling between storage place and borehole
• E21B 19/24 - Guiding or centralising devices for drilling rods or pipes
• E21B 21/01 - Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes

Abstract

Disclosed in the present invention is a large-dip-angle small-turning-radius circular full-face modular tunnel boring machine, comprising: a tunneling mechanism used for tunneling a tunnel rock face of a roadway; a supporting mechanism used for supporting the roadway surrounding rock after tunneling is completed; multiple groups of apparatus wagons used for roadway walking of the tunnel boring machine; and a conveying mechanism, comprising a plurality of conveying units which are independently distributed, a group of conveying units being arranged on each group of apparatus wagons. Each group of conveying units comprises an inclined conveying section, a horizontal conveying section and an adjusting mechanism, the horizontal conveying section being arranged at the tail end of the inclined conveying section, and the adjusting mechanism being hinged and connected between the inclined conveying section and the horizontal conveying section and used for adjusting the inclination angle of the inclined conveying section, so as to meet the conveying requirements of rock debris having different weights. The disclosure in the present invention has adequate rock breaking capability, high tunneling efficiency, high roadway forming quality and a simple structure, and can ensure continuous transportation of rock debris during right-angle turning or large-dip-angle tunneling of tunnel boring machines.

IPC Classes  ?

• E21D 9/087 - Making by using a driving shield with additional boring or cutting means with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
• E21D 9/093 - Control of the driving shield
• E21D 20/00 - Setting anchoring-bolts
• E21D 9/12 - Devices for removing or hauling away excavated material or spoilWorking or loading platforms
• E21F 17/00 - Methods or devices for use in mines or tunnels, not covered elsewhere

Abstract

A method for purifying biological dust suppressant by two-stage ultrafiltration is provided, which utilizes the differences of physical characteristics such as solubility and molecular morphology of each substance in fermentation broth to separate and purify the target product by two-stage ultrafiltration. Firstly, the fermentation broth is centrifugally pretreated to separate insoluble substances such as microbial cells; after centrifugation, the supernatant passes through a primary ultrafiltration membrane, and the polysaccharide, lactic acid and aggregated biological dust suppressant molecules with molecular weights more than 20 kilodaltons are cut off; organic solvents such as methanol and ethyl acetate are added to the retentate for dilution, further filtering is carried out with ultrafiltration membrane with a cutoff molecular weight more than 10 kilodaltons to obtain liquid product, and finally preparing solid purified product is conducted through rotary evaporation and constant temperature drying.

IPC Classes  ?

• B01D 61/14 - UltrafiltrationMicrofiltration
• B01D 61/20 - AccessoriesAuxiliary operations

Abstract

A distortionless expansion method for an annular image having an offset center of an inner wall of a borehole. The method comprises: placing a camera into a hole and pushing same inwards into same; selecting two image frames, i.e. a first image and a second image, from a collected video, and adjusting a second axis angle in the second image to be the same as a first axis angle in the first image; adjusting both the first axis angle and the second axis angle to be zero; calculating a first motion radius ratio according to the adjusted first image and the adjusted second image, and similarly obtaining a second motion radius ratio; obtaining a first axis distance radius ratio according to the first motion radius ratio, and similarly obtaining a second axis distance radius ratio; and performing correction according to the first axis distance radius ratio and the second axis distance radius ratio, so as to obtain a third image and a fourth image, then obtaining a corrected distortionless image, and performing expansion to obtain a distortionless expanded image. In the distortionless expansion method for an annular image having an offset center of an inner wall of a borehole, a correction parameter of each image frame is calculated by means of a motion trajectory, and pixels on an edge rather than at the center are used, such that the method has high precision and strong robustness.

IPC Classes  ?

• G06T 3/00 - Geometric image transformations in the plane of the image
• E21B 47/002 - Survey of boreholes or wells by visual inspection

Abstract

A system and process for sorting and upgrading coarse-grained sulphide ores by means of gradient waste-ore discarding, which belong to the technical field of mineral sorting and recovery, and solve the problems of high energy consumption and low efficiency of existing sulphide-ore sorting. The system comprises a waste-lump-ore discarding unit, a waste coarse-grained ore-sand discarding unit, and an ore grinding and flotation unit, wherein the waste-lump-ore discarding unit is used for pre-crushing, screening and grading raw sulphide ores and discarding waste ores, so as to obtain waste lump ores, an undersize product and a lumpy concentrate product; the waste coarse-grained ore-sand discarding unit is used for carrying out multi-stage crushing and fluidized flotation waste-ore discarding on the undersize product and the lumpy concentrate product, so as to obtain a tailing sand product and a fluidized flotation concentrate; and the ore grinding and flotation unit is used for carrying out roughing once, concentration twice and scavenging twice on the fluidized flotation concentrate, so as to obtain a concentrate and a tailing product. The present invention achieves the gradient waste-ore discarding of gangue particles of sulphide ores, reduces the load of ore grinding, and improves the flotation efficiency.

IPC Classes  ?

• B03B 9/00 - General arrangement of separating plant, e.g. flow sheets

Abstract

A scenario self-adaptive unmanned driving control method for a monorail crane transport robot, comprising: building a monorail crane industrial Internet of Things platform; building a monorail crane digital twin system; achieving virtual unmanned driving control of a monorail crane; establishing a shadow following mode of the monorail crane; controlling a real monorail crane in real time by the virtual monorail crane; comparing the real monorail crane driven by data with the monorail crane driven by a driver and having a shadow following mode; and designing complex scenario self-adaptive programs. Root node merging and data compression increases the loading speed for a new roadway scenario, thereby achieving environmental self-adaption, platform self-adaption and terminal self-adaption. Designing self-adaptive programs during complex scenario updating achieves rapid starting and training according to specific down-hole environments.

IPC Classes  ?

• B66C 13/48 - Automatic control of crane drives for producing a single or repeated working cycleProgramme control

Abstract

The present disclosure provides methods for determining a combustion characteristic of a mixture of gasification slag and coal. The method may be implemented by a processor. The combustion characteristic includes at least one of an ignition temperature, a burnout temperature, or a composite combustion characteristic index. The method comprises: obtaining first basic data of sample coal and sample gasification slag, the first basic data including at least one of a moisture content, a volatile matter, or a fixed carbon; obtaining second basic data of coal to be tested and gasification slag to be tested in a mixture to be tested and a mixing ratio of the mixture to be tested; and determining a combustion characteristic of the mixture to be tested based on the first basic data, the second basic data, and the mixing ratio.

IPC Classes  ?

• G01N 25/22 - Investigating or analysing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
• G01N 33/24 - Earth materials

Abstract

Provided in the present application is a regression test method, which is executed by a test system, wherein the test system is used for executing a regression test for a system under test. The method comprises: receiving a test task description for a system under test; according to the test task description, determining a changed item of the system under test, such as a changed software logic unit or a changed environmental form; according to the changed item of the system under test, recommending at least one test case by means of a software/hardware association graph, which comprises association relationships between software and hardware of the system under test; and according to the at least one test case, testing the system under test by using an environmental form corresponding to the at least one test case. In the method, a test case corresponding to a logical code strongly related to a changed environment or a test case in an environmental form strongly related to a change in the logical code is recommended in view of a software/hardware association graph of a system under test, so as to perform a test, thereby accurately reducing the execution amount of the test while ensuring the effectiveness of a regression test, and shortening a CI/CD period.

IPC Classes  ?

• G06F 11/36 - Prevention of errors by analysis, debugging or testing of software

Abstract

Disclosed is a method for arranging a full-section in-situ paste pipe injection filling system used for a fully-mechanized caving frame. The method comprises the following steps: step 1: determining types of mine processing material, using an experimental method to test the conveyance performance of different ratios of materials, and obtaining a required material ratio and, under said ratio, the performance indicator parameters of a slurry; step 2: according to mine solid waste treatment capability requirements, selecting a suitable filling pump and filling pipeline, and determining a conveying speed for the required slurry ratio; step 3: according to the measured slurry performance indicator parameters and the conveying speed of the slurry, using COMSOL software numerical simulation means to analyze the diffusion radius of the slurry in a goaf; step 4: according to the diffusion radius, in combination with an arrangement method for a paste filling and top coal caving mining system, arranging a channel and working surfaces for fully-mechanized caving frame paste filling. The invention achieves fully-mechanized paste filling mining, solves the problem of large amounts of gangue accumulation, and further protects the ecosystem.

IPC Classes  ?

• E21F 15/00 - Methods or devices for placing filling-up materials in underground workings

Abstract

The present disclosure belongs to the technical field of mining equipment, and in particular related to an automatic driving system of a monorail hoist driven based on a digital twin and a method thereof. The system includes a railroad switch sensor module, a positioning system module, a data transferring system, an intelligent control system, a digital twin system and an automatic driving module. The railroad switch sensor module is configured to sense the connection-position state of a movable track in a monorail hoist railroad switch track. The data transferring system is configured to transmit the data on the surface and underground. The method applies the digital twin technology to the automatic driving in the monorail hoist, reduces the input of personnel in the mine, and avoids safety accidents caused by irregular management or improper operation of the driver, through the deploying of the automatic driving module for the monorail hoist.

IPC Classes  ?

• B66C 13/48 - Automatic control of crane drives for producing a single or repeated working cycleProgramme control
• B66C 15/00 - Safety gear
• B66C 19/00 - Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
• G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric

Abstract

A coal-measure gas development method based on horizontal-well methane in-situ combustion explosion fracturing, comprising steps: S1, enabling a construction vertical well (3) to reach a target coal-measure gas reservoir; S2, constructing a horizontal well section (8) in the target coal-measure gas reservoir; S3, constructing branch wells (9) from the horizontal well section to the two sides; S4, sealing the branch wells by means of packers (10), and monitoring the methane pressure in the branch wells in real time; S5, when the methane pressure reaches a specified value, conveying a combustion improver to the branch wells; S6, fully mixing same and then igniting same so as to construct a fracture network (12) around each of the branch wells; S7, completing combustion explosion fracturing operation of all the branch wells so as to finally form an artificial gas reservoir; and S8, opening the packers to extract methane gas. The method constructs the complex fracture networks in the reservoir via explosion shock waves generated by combustion explosion, so as to improve the recovery rate of coal-measure gas. After combustion explosion fracturing, methane gas in surrounding reservoirs gathers in the artificial gas reservoir, so that coal-measure gas cooperative development can be achieved, avoiding waste of resources.

IPC Classes  ?

• E21B 43/26 - Methods for stimulating production by forming crevices or fractures

Abstract

Provided is an evaluation method of ductility of a grouted rock mass for advanced renovation of a water-sand mixture inrush prevention area including following steps: first, acquiring a spatial distribution law of cracks in overlying strata, and establishing a three-dimensional geological model and a grouted rock mass unit geological model; calculating rock mass quality standard of the target rock strata; performing compression tests on multiple groups of grouted consolidated bodies, and calculating an average value of strain softening indexes of the multiple groups of grouted consolidated bodies; selecting multiple groups of grouted target rock strata, and calculating an average value of unstable fracture ductility of the multiple groups of grouted target rock strata; finally, acquiring a permeability strength of the grouted rock mass, and calculating and grading an evaluation index of ductility of the grouted rock mass,

IPC Classes  ?

• E21F 17/18 - Special adaptations of signalling or alarm devices

Abstract

A boiler hearth sectional temperature field and radiation characteristic visual monitoring method combining radiation images and spectrums, which method belongs to the field of heat radiation temperature measurement, and can adapt to severe measurement conditions. An image detector can be directly inserted into a fire observation hole of a boiler, so as to perform flame image data collection, such that when the monitoring method is used, additional hole drilling is not required in a boiler of a power plant, and it is not necessary for the boiler to bear the risk of the strength of a boiler wall being reduced due to hole drilling. According to a boiler hearth sectional temperature field which is measured by means of the monitoring method, a combustion state of a boiler can be accurately determined, such that accurate and effective guidance can be provided with regard to the combustion adjustment of the boiler, the temperature deviation of combustion areas of the boiler can be reduced, and the boiler can maintain stable operation, thereby improving the combustion efficiency of the boiler, and reducing pollutant emissions.

IPC Classes  ?

• G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry

Abstract

A spectral temperature measurement method based on multi-wavelength mobile narrow-band window optimization, belonging to the field of thermal radiation temperature measurement. In the method, a continuous spectrum of a thermal radiation object is collected by means of a spectrometer; by means of performing denoising, windowing and standardization on the spectrum of the thermal radiation object, the whole measurement wavelength range is traversed within an appropriate narrow-band window; and by means of comparing the spectrum with windowed and standardized spectrums of blackbody radiation at different temperatures in a corresponding spectral window, the temperature and the emissivity distribution of the thermal radiation object are calculated with a relatively high accuracy without relying on emissivity model estimation, such that the method has a relatively high universality and noise resistance.

IPC Classes  ?

• G01K 11/30 - Measuring temperature based on physical or chemical changes not covered by group , , , or using measurement of the effect of a material on X-radiation, gamma radiation or particle radiation
• G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry

Abstract

0maxdcc of a backfilling body, and forming a protective coal seam backfilling mining key parameter calculation model; and step 3, monitoring and checking indicators such as the fracture damage depth of a mining floor of the protective coal seam, the stress change of the protected coal seam and the expansion rate of the protected coal seam by using numerical simulation software, and verifying the pressure relief effect of the protected coal seam. A large amount of gas can be prevented from rushing into the goaf of an upper protective coal seam, efficient pressure relief of a protected coal seam is achieved, and guarantee is provided for safe coal seam mining.

IPC Classes  ?

• E21F 17/18 - Special adaptations of signalling or alarm devices

Abstract

22222222222 is stored.

IPC Classes  ?

• E21F 17/16 - Modification of mine passages or chambers for storage purposes, especially for liquids or gases

Abstract

A roadway/tunnel excavation robot and an automatic cutting control method are provided. The robot includes a rack, a walking platform, a supporting and stabilizing mechanism, a milling mechanism, a telescoping mechanism, an inclined cutting feed adjusting mechanism, a horizontal swinging mechanism, a lifting mechanism and a controller. The milling mechanism includes a drive unit, a milling shaft, an eccentric rotary casing, a high-pressure jet nozzle unit, a tension and compression sensor and a direction sensor. Through the deflection of a center line of an inner hole of the eccentric rotary casing, the milling mechanism drives a milling cutter head to carry out a rotational oscillation motion for rock breaking. The telescoping mechanism, the inclined cutting feed adjusting mechanism, the lifting mechanism and the horizontal swinging mechanism are controlled such that the milling mechanism performs coal rocks milling.

IPC Classes  ?

• E21D 9/10 - Making by using boring or cutting machines
• E21C 31/04 - Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices imparting both a rotary and reciprocating motion
• E21C 35/24 - Remote control specially adapted for machines for slitting or completely freeing the mineral
• E21D 9/00 - Tunnels or galleries, with or without liningsMethods or apparatus for making thereofLayout of tunnels or galleries

Abstract

A fringe projection three-dimensional measurement method applicable to detection of a high-reflective foreign object (2) in transmission of a coal mine belt conveyor (6), comprising the following steps: projecting two grayscale images onto the surface of a foreign object (2), a camera acquiring an image, calculating ambient light intensity and surface reflectivity, and further calculating adaptive projection intensity in a camera coordinate system; projecting a speckle image, optimizing an acquired speckle image according to the reflectivity, and establishing a pixel matching relationship between the projection and the acquired image; according to the pixel matching relationship, enabling the adaptive projection intensity in the camera coordinate system to correspond to that in a projector coordinate system, further generating an adaptive projection fringe pattern, projecting same onto the surface of the foreign object (2), and measuring three-dimensional information of the foreign object (2); and detecting the foreign object (2) on the surface of a belt conveyor (6) according to the three-dimensional information. The present invention avoids the problem of a measurement failure during measurement of high-reflective objects by using conventional fringe projection three-dimensional measurement methods, and is applicable to measurement of metal foreign objects (2) such as an anchor rod and an iron wire mesh on the surface of the belt conveyor (6).

IPC Classes  ?

• G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
• G06T 7/00 - Image analysis

Abstract

The present invention relates to a small-size high-rotation-speed drill for mechanical reaming and dust-free operations, comprising a main unit body, a working mechanism, a harmonic speed reduction apparatus, an inserting and supporting device, a drainage tube pressure transmitter, a dust collecting apparatus, track traveling apparatuses, a drill pipe frame, and an electric pump conversion box; the track travelling apparatuses are fixed to both sides of the main unit body; the working mechanism is provided above the main unit body, and the electric pump conversion box is provided above the main unit body; the main unit body comprises a main unit frame, a mounting plate is provided on the main unit frame, the mounting plate is connected to the working mechanism by means of a slewing reduction apparatus, the electric pump conversion box is provided on one side of the working mechanism, and the drill pipe frame is connected in front of the mounting plate; and the working mechanism is connected to a vertical slewing reducer, and the vertical slewing reducer is connected to the harmonic speed reduction apparatus. According to the present invention, a harmonic reducer is used to drive a rack and a pinion to implement vertical up-down movement, operation is more stable, and the problems of shaking and instability caused by the high-rotation-speed drill are solved.

IPC Classes  ?

• E21B 7/02 - Drilling rigs characterised by means for land transport, e.g. skid mounting or wheel mounting

Abstract

An optical fiber current sensor system for underground spaces such as coal mines and the like. Said sensor system comprises a magnetic circuit unit and an acquisition unit, the magnetic circuit unit comprising a wire (1), a magnetizer (2), a coil (3), a direct-current stabilized voltage supply (4), a magnetostrictive composite material magnetic induction element (5) and a fiber grating (6), and the acquisition unit comprising a fiber grating demodulator (7) and a computer (8). The magnetostrictive composite material magnetic induction element (5) is configured to be of a symmetrical stepped beam structure. One end of the magnetizer (2) is configured to be of a stepped structure, while the other end thereof is configured to be of a planar structure. The coil (3) is connected to the direct-current stabilized voltage supply (4). An output current of the direct-current stabilized voltage supply (4) supplies a bias magnetic field to the magnetostrictive composite material magnetic induction element (5) by means of the coil (3). A sensor achieves magnetism gathering by means of the stepped design of the magnetostrictive material magnetic induction element (5) and the magnetizer (2), thereby remarkably increasing the sensitivity of the sensor. In addition, different bias magnetic fields are applied by means of the adjustable coil (3), so that the sensor has linearity in different measurement ranges, thereby expanding the range of linearity.

IPC Classes  ?

• G01R 19/08 - Measuring current density
• G01R 15/20 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices
• G01R 33/032 - Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday