Abstract

Provided is an off-road robot, including a front side portion, a rear side portion and a middle portion. The front side portion includes a front vehicle frame, a front wheel and a first driving system; the front wheels and the first driving system are disposed at the front vehicle frame; and the first driving system drives the front wheels. The rear side portion includes a rear vehicle frame, a rear wheel and a second driving system; the rear wheel and the second driving system are disposed at the rear vehicle frame; and the second driving system drives the rear wheels. The middle portion includes a first frame and a second frame; the first frame and the second frame are detachably connected; the front vehicle frame is connected with the first frame; and the rear vehicle frame is connected with the second frame.

IPC Classes  ?

• B62D 63/02 - Motor vehicles
• B62D 25/08 - Front or rear portions
• B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
• B62D 3/02 - Steering gears mechanical
• B62D 21/11 - Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension
• B60K 1/02 - Arrangement or mounting of electrical propulsion units comprising more than one electric motor
• B60G 7/00 - Pivoted suspension armsAccessories thereof

Abstract

A method for restoring video data of a pipe based on computer vision is provided. The method includes: performing gray stretching on pipe image/video collected by a pipe robot; processing noise interference by smoothing filtering; extracting an iron chain from the center of a video image as a template for location; performing target recognition on the center of video data by an SIFT corner detection algorithm; detecting ropes on left and right sides of a target by Hough transform; performing gray covering on the iron chain at the center of the video image and the ropes on two sides; and restoring data by an FMM image restoration algorithm.

IPC Classes  ?

• G06T 7/44 - Analysis of texture based on statistical description of texture using image operators, e.g. filters, edge density metrics or local histograms
• G06T 7/13 - Edge detection
• G06V 10/48 - Extraction of image or video features by mapping characteristic values of the pattern into a parameter space, e.g. Hough transformation
• G06V 10/36 - Applying a local operator, i.e. means to operate on image points situated in the vicinity of a given pointNon-linear local filtering operations, e.g. median filtering
• F16L 55/26 - Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
• G06T 3/40 - Scaling of whole images or parts thereof, e.g. expanding or contracting
• G06T 3/60 - Rotation of whole images or parts thereof
• G06T 5/40 - Image enhancement or restoration using histogram techniques
• G06T 5/00 - Image enhancement or restoration
• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume
• G06T 7/70 - Determining position or orientation of objects or cameras
• G06V 10/46 - Descriptors for shape, contour or point-related descriptors, e.g. scale invariant feature transform [SIFT] or bags of words [BoW]Salient regional features
• 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
• G06T 5/20 - Image enhancement or restoration using local operators
• G06T 7/00 - Image analysis
• G06F 18/10 - Pre-processingData cleansing
• F16L 101/30 - Inspecting, measuring or testing

Abstract

The present disclosure provides a small-scale geological anomalous body detection method and device, and relates to the field of small-scale geological anomalous body detection. The method comprises: acquiring diffracted wave shot-gather data collected in a to-be-processed area and determining target single shot data having a distance to the center point, which is a predetermined distance; calculating a first horizontal distance between each shot point in the target single shot data and the center point and calculating a second horizontal distance between the detection point corresponding to each shot point and the center point; constructing a common-diffraction-point gather based on the first horizontal distances and the second horizontal distances; and processing the common-diffraction-point gather by using a correction algorithm of diffracted wave events to obtain a diffracted wave imaging profile.

IPC Classes  ?

• G01V 1/36 - Effecting static or dynamic corrections on records, e.g. correcting spreadCorrelating seismic signalsEliminating effects of unwanted energy
• G01V 1/34 - Displaying seismic recordings

Abstract

The present disclosure provides a diffracted wave imaging method, device and electronic apparatus. The method comprises: acquiring pre-stack seismic wave field data of a to-be-processed area; extracting target data of a target imaging point; fitting target time sample points in the target data based on the Gaussian model and solving the fitting function to determine a distribution range of the stationary point position signal of the reflected wave in the target data; determining migration imaging data of the target imaging point based on the target data and the distribution range; and determining a diffracted wave imaging result of the to-be-processed area based on the migration imaging data of all the imaging points in the to-be-processed area.

IPC Classes  ?

• G01V 1/34 - Displaying seismic recordings
• G01V 1/30 - Analysis

Abstract

The embodiment of the present invention discloses an underwater explosion pressure test experiment system and method. The invention including: container and drug pack are used to simulate underwater explosion scenes. Projector projects scattered speckles on the water surface. Two high-speed cameras collect images of the first water surface fluctuation. The strain at a certain point in the first water surface is calculated according to the scattered speckles. The K value of the corresponding explosive is calculated from the elastic modulus of the strain and water, and based on the calculated K value, the curve of the explosion pressure at different points in the water with the distance from the explosion source is calculated according to the formula, and the explosion pressure at any point in the water is determined according to the curve. The invention is suitable for use in an underwater explosion pressure measurement experiment.

IPC Classes  ?

• G01L 5/14 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force of explosionsApparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the energy of projectiles
• G06T 1/00 - General purpose image data processing
• G06T 7/246 - Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
• G06T 7/292 - Multi-camera tracking

Abstract

A hoisting apparatus for a mine vertical shaft, a hoisting system for a mine vertical shaft and a controlling method thereof are provided. The hoisting apparatus includes a driving device provided at a wellhead and a guiding device provided in a vertical shaft. A position of the guiding device corresponds to a position of the driving device and a transmission rope is wound around the driving device and the guiding device. Moreover, the driving device is drivingly connected to the guiding device via the transmission rope; and a tension regulating device is provided in the vertical shaft. The guiding device is movably provided at the tension regulating device that is for regulating a distance between the driving device and the guiding device. The tension regulating device controls a tension of the transmission rope by regulating the distance between the driving device and the guiding device.

IPC Classes  ?

• B66B 7/10 - Arrangements of ropes or cables for equalising rope or cable tension
• B66B 15/06 - Drums
• B66B 15/08 - Driving gear
• B66B 17/12 - Counterpoises
• B66B 17/04 - Mining-hoist cars or cages

Abstract

A square-profile laser marking method and device based on optical reflection and refraction. The device comprises three functional modules, namely a point-line laser conversion module (1), a line laser collimation module (2), and a line laser amplification module (3). Point-shaped laser is separately converted into divergent line laser, collimated line laser and amplified line laser. Finally, the function of adjusting point-shaped laser to a square laser pattern is achieved. The shortcomings of numerous devices and difficulty in identification during multipoint laser emission are overcome, and the shortcomings of high cost and difficulty in processing when implementing square-profile laser marking by using existing grating technologies are also overcome. Conversion from point laser to a square laser pattern is achieved at low cost by means of a simpler principle.

IPC Classes  ?

• G01C 15/00 - Surveying instruments or accessories not provided for in groups

Abstract

A bionic robot is provided, which includes a body; a plurality of sets of wheeled leg devices arranged at intervals in a front-rear direction, each comprising two wheeled leg devices arranged symmetrically in a left-right direction, each comprising a leg assembly and a travel wheel, and a power output shaft connected to the travel wheel; and a suspension device disposed in the body and connected to at least two sets from the plurality of sets of wheeled leg devices. The at least two sets of wheeled leg devices are located at the foremost end and the backmost end respectively. The suspension device comprises a plurality of drive assemblies, each connected to a corresponding leg assembly, which each comprise: an electric cylinder being configured to drive a telescopic rod to extend or retract; a damper connected between the body and the leg assembly; and an elastic member fitted over the damper.

IPC Classes  ?

• B62D 57/028 - Vehicles characterised by having other propulsion or other ground-engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members having wheels and mechanical legs
• B25J 9/10 - Programme-controlled manipulators characterised by positioning means for manipulator elements
• B25J 9/12 - Programme-controlled manipulators characterised by positioning means for manipulator elements electric
• B25J 9/16 - Programme controls
• B25J 13/00 - Controls for manipulators
• B25J 13/08 - Controls for manipulators by means of sensing devices, e.g. viewing or touching devices
• B25J 19/00 - Accessories fitted to manipulators, e.g. for monitoring, for viewingSafety devices combined with or specially adapted for use in connection with manipulators

Abstract

The present invention proposes a method for rapidly dehazing an underground pipeline image based on dark channel prior (DCP). The method includes: preprocessing a hazy underground pipeline image to obtain a dark channel image corresponding to the hazy image; average-filtering the obtained dark channel image to estimate an image transmittance; compensating an offset value for an average filtering result to obtain a rough estimate of the transmittance; using a pixel value of the original image and an average-filtered image to estimate a global atmospheric light value; and using a physical restoration model to restore a dehazed image. The method of the present invention realizes the timeliness of the algorithm while ensuring the dehazing effect, and is suitable for scientific fields such as video monitoring of underground pipeline environment and identification of underground pipeline defects.

IPC Classes  ?

• G06T 5/00 - Image enhancement or restoration
• G06T 5/20 - Image enhancement or restoration using local operators

Abstract

An underwater explosion pressure test experiment system and method. The underwater explosion pressure test experiment system comprises a container, an explosive material bag, a controller, protective glass, two high-speed cameras, a projector, a computer, an image analysis module and an explosion pressure calculation module; the container and the explosive material bag are used to simulate an underwater explosion scenario, the projector projects speckles on the water surface, the two high-speed cameras acquire images of fluctuation of a first water surface, the strain at a certain point on the first water surface is calculated using the speckles, a dimensionless parameter K value of the corresponding explosive material is calculated according to the strain and the elastic modulus of water, a change curve of underwater explosion pressures at different positions as a function of the distance from the explosion source is obtained by means of calculation according to a formula on the basis of the calculated K value, and the underwater explosion pressure at any point is determined according to the change curve. The underwater explosion pressure test experiment system is suitable for the measurement of an underwater explosion pressure.

IPC Classes  ?

• G01L 5/14 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force of explosionsApparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the energy of projectiles

Abstract

121122. By means of the method, it can be ensured that a coupling relationship is created between the ground stresses and the elliptical wellbore, thereby ensuring that the elliptical wellbore can effectively overcome the ground stresses during use.

IPC Classes  ?

• E21B 17/01 - Risers

Abstract

Disclosed are a mine vertical shaft lifting apparatus, a mine vertical shaft lifting system and a control method therefor. The mine vertical shaft lifting apparatus comprises: a driving device (10) arranged at a shaft opening; a guiding device (20) arranged inside a vertical shaft, wherein the guiding device (20) corresponds to the driving device (10) in terms of position; a transmission rope (30) arranged around the driving device (10) and the guiding device (20), wherein the driving device (10) is in driving connection with the guiding device (20) via the transmission rope (30); and a tensioning force adjustment device arranged in the vertical shaft, wherein the guiding device (20) is movably arranged on the tensioning force adjustment device, the tensioning force adjustment device is used for adjusting the distance between the driving device (10) and the guiding device (20), and the tensioning force adjustment device adjusts the distance between the driving device (10) and the guiding device (20) to control the tensioning force of the transmission rope (30). By means of the apparatus, the tensioning force fluctuation generated in the operation process of the lifting system is reduced, and the safety of the lifting system is improved.

IPC Classes  ?

• B66B 17/00 - Hoistway equipment

Abstract

A cascade pumped storage power station, comprising: a high-level water storage area, a middle-level water storage area (19), and a lower-level water storage area (20); water conveying channels (15) being in communication with the high-level water storage area and the middle-level water storage area (19) and in communication with the middle-level water storage area (19) and the lower-level water storage area (20); and two-way generator units provided between the high-level water storage area and the middle-level water storage area (19) and provided between the middle-level water storage area (19) and the lower-level water storage area (20), pumped storage or power generation being performed by utilizing the two-way generator units by means of the water conveying channels (15). According to a forming method of the cascade pumped storage power station, an underground water storage area is constructed by selecting an abandoned mine roadway, and at least the middle-level water storage area and the lower-level water storage area having a height difference are used as underground water storage areas.

IPC Classes  ?

• E02B 9/00 - Water-power plantsLayout, construction or equipment, methods of, or apparatus for, making same

Abstract

A semi-underground pumped-storage hydroelectric power station employing an open-pit mine, and a method for constructing the same. The power station comprises a high-level water storage region and a low-level water storage region (20), a water delivery channel (15), and a bidirectional generator. The water delivery channel (15) communicates with the high-level water storage region and the low-level water storage region (20) and is disposed therebetween. The bidirectional generator is disposed between the high-level water storage region and the low-level water storage region (20), and is configured to generate pumped-storage hydroelectric power or electricity using water from the water delivery channel (15). The present method for constructing a semi-underground pumped-storage hydroelectric power station utilizes both the aboveground space and underground space of an abandoned mine, such that an open pit of the abandoned mine serves as a high-level water storage region, and tunnels of the abandoned mine serve as an underground water storage region.

IPC Classes  ?

• E02B 9/00 - Water-power plantsLayout, construction or equipment, methods of, or apparatus for, making same

Abstract

A subsidence-area-based semi-underground pumped storage power station, comprising: a high-level water storage area and a low-level water storage area (20), a water delivery channel (15), and a two-way generator set. The water delivery channel (15) is communicated between the high-level water storage area and the low-level water storage area (20). The two-way generator set is provided between the high-level water storage area and the low-level water storage area (20). The two-way generator set is utilized for pumped storage or power generation by means of the water delivery channel (15). The high-level water storage area is a ground subsidence area (18) of an abandoned mine. The low-level water storage area (20) is an underground water storage area. The underground water storage area is located in an underground space of the abandoned mine. Also comprised is a forming method for the subsidence-area-based semi-underground pumped storage power station.

IPC Classes  ?

• E02B 9/00 - Water-power plantsLayout, construction or equipment, methods of, or apparatus for, making same
• E02B 9/02 - Water-ways

Abstract

A full-underground pumped-storage power plant, comprising: a high-level water storage area (19) and a low-level water storage area (20); a water conveying channel (15) that communicates between the high-level water storage area (19) and the low-level water storage area (20); a two-way generator set that is provided between the high-level water storage area (19) and the low-level water storage area (20) and that is used to pump water for energy storage or power generation by means of the water conveying channel (15). By means of a formation method for the full-underground pumped-storage power plant, the high-level water storage area (19) and the low-level water storage area (20) are underground water storage areas, and the underground water storage areas are located in an underground space of an abandoned mine.

IPC Classes  ?

• E02B 9/00 - Water-power plantsLayout, construction or equipment, methods of, or apparatus for, making same

Abstract

An apparatus for a stress freezing experiment during a fracturing process. Temperature increasing and temperature decreasing processing under the control of a corresponding temperature are performed on a test piece (109) by means of a temperature control system, according to a photosensitive curve and in accordance with a pre-set temperature gradient, so as to realize the stress freezing of the test piece (109); a corresponding pressure is applied to the test piece (109) by means of a true triaxial servo loading system; and a corresponding fracturing experiment is then performed on the test piece (109) by means of a fracturing liquid pumping system (117), arranged in a thermostat (101), of an output end. Since the test piece (109) is a transparent photosensitive model obtained through printing with a 3D printer, intuitive observation and transparent display of a global stress field evolution law upon a complex seam mesh crack initiation and extension during a fracturing process can be realized by combining the stress loading of a true triaxial servo loading system, a stress freezing experiment performed under the precise temperature control of a temperature control system and a fracturing experiment of a fracturing liquid pumping system (117).

IPC Classes  ?

• G01N 3/12 - Pressure-testing

Abstract

A detection method and device for ground-penetrating radar discontinuum, comprising: obtaining ground-penetrating radar signals of a preset underground space, the ground-penetrating radar signals carrying discontinuous information of electrical parameters of the underground space; determining, by a target scanning algorithm, a target inclination angle of the ground-penetrating radar signals with respect to each of multiple channels to be scanned in multiple preset inclination angles; separating the ground-penetrating radar signals according to the target inclination angle to obtain a scattered wave; performing speed continuation analysis on the scattered wave to obtain a focusing speed of the scattered wave; and imaging the scattered wave according to the scattered wave and the focusing speed to obtain an imaging result, the imaging result being used for determining distribution information of discontinuum in the preset underground space.

IPC Classes  ?

• G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves
• G01S 13/88 - Radar or analogous systems, specially adapted for specific applications

Abstract

A wheel (100) and a vehicle (1000) having the same. The wheel (100) comprises a wheel frame (1) and three Mecanum wheels (2). The wheel frame (1) can be rotated about a wheel frame rotation axle (L1), and comprises three sub-frames (11). The three sub-frames (11) are separated from one another and disposed at a circumference of the wheel. The three Mecanum wheels (2) are respectively rotatably disposed at the three sub-frames (11) and correspondingly rotate about respective rotation axles (L2). The rotation axles (L2) of the three Mecanum wheels (2) are projected onto a plane perpendicular to the wheel frame rotation axle (L1) to form three vertex points of isosceles triangles, and the wheel frame rotation axle (L1) is projected onto the plane to form the center of the isosceles triangles.

IPC Classes  ?

• B62B 5/02 - Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs
• B62D 57/024 - Vehicles characterised by having other propulsion or other ground-engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members specially adapted for moving on inclined or vertical surfaces

Abstract

A coal collapse column identification method and apparatus, comprising: acquiring seismic shot gather data in a target region and a seismic wave migration velocity file (S101); calculating a diffraction wave travel time of each piece of single shot data at different imaging points according to the data (S102); performing Mahalanobis distance calculation processing on each single shot data and the diffraction wave travel time thereof to acquire a diffraction wave amplitude value sample point of each piece of single shot data (S103); performing imaging processing respectively on a diffraction wave of each piece of single shot data (S104); and superposing imaging processing results of all the single shot data corresponding to the seismic shot gather data to obtain a diffraction wave imaging result of the seismic shot gather data so as to facilitate coal collapse column identification according to the diffraction wave imaging result (S105). According to the invention, a diffraction wave corresponding to seismic shot gather data is extracted through a Mahalanobis distance. Since the diffraction wave carries geological information with a smaller dimension, the imaged diffraction wave can accurately identify a collapse column geologic body, thereby reducing the risk of accidents such as a water burst and gas leakage caused by a collapse column in coal exploitation.

IPC Classes  ?

• G01V 1/28 - Processing seismic data, e.g. for interpretation or for event detection

Abstract

A surface consistent amplitude compensation method and device in a common attitude gather, the method comprising: acquiring seismic data and a corresponding operation log in an exploration work area; calculating an average total energy of all components of each channel of the seismic data to serve as a seismic channel energy of the channel; performing a surface consistent preliminary test on the obtained energy of each seismic channel, and determining a seismic channel energy satisfying a first preset condition to be a representative data body; calculating each compensation factor corresponding to the seismic channel energy in the representative data body, and calculating a compensation factor for a detector in a common attitude gather; performing surface consistent amplitude compensation on the seismic data for the entire work area according to a total compensation factor consisting of the abovementioned two factors; and calculating the three seismic data components together, thus obtaining an energy distribution trigonometric function relationship among the three data components, taking into account a placement attitude of the detector, calculating the compensation factor for the detector in the common attitude gather, and thereby enabling a calculation result to be more accurate.

IPC Classes  ?

• G01V 1/36 - Effecting static or dynamic corrections on records, e.g. correcting spreadCorrelating seismic signalsEliminating effects of unwanted energy

Abstract

A common-posture gather azimuthal angle analysis and correction method and device, the method comprising: identifying a posture of a detector in a common-detection-point gather, and extracting seismic data having the same posture therefrom to form a common-posture gather (102); performing azimuthal angle deviation value analysis on each common-posture gather and acquiring an azimuthal angle deviation value of the detector in a corresponding posture therefrom (103); performing azimuthal angle correction on three-component seismic data corresponding to the detector according to the azimuthal angle deviation value of the detector of each common-posture gather (104); and performing dip angle correction on the three-component seismic data subjected to the azimuthal angle correction according to a dip angle provided by a seismic acquisition system so as to obtain final three-component seismic data (105). Common-posture gathers are proposed, and azimuthal angle analysis and correction are carried out on different common-posture gathers independently; meanwhile, a theoretical error of dip angle correction and azimuthal angle correction corresponding to a matrix operation is overcome; therefore, by means of the method, high-fidelity transverse-wave seismic data and longitudinal-wave seismic data can be obtained.

IPC Classes  ?

• G01V 1/28 - Processing seismic data, e.g. for interpretation or for event detection

Abstract

A bidirectional variable cross-section water-pressure bearer cycle test system for a coal mine water inrush model test, comprising a water-pressure loading portion and a water-pressure bearer portion, wherein the water-pressure loading portion is composed of a water supply tank, a loading water pump, a water piezometer, a water control valve, a water inlet pipe, a water discharge pipe, etc. in the prior art, and controls the size of a loaded water pressure, so as to achieve the cyclic loading of the water pressure; and the water-pressure bearer portion is composed of a variable cross-section water-pressure bearer assembly and a variable water-level water-pressure bearer assembly, and is set to be formed in an airtight main frame. The variable cross-section water-pressure bearer assembly is composed of a variable cross-section water storage tank, a variable cross-section water baffle and a variable cross-section porous plate, and the variable water-level water-pressure bearer assembly is composed of a variable water-level water storage tank, a variable water-level water baffle and a variable water-level porous plate. According to test requirements, the separate position of the variable cross-section water baffle is designed, and the baffling position of the variable water-level water baffle is determined, so as to achieve the bidirectional variable cross-section water-pressure bearer cycle.

IPC Classes  ?

• G01M 99/00 - Subject matter not provided for in other groups of this subclass
• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups

Abstract

A simulated impact-type rock burst experiment apparatus includes a bracket, a specimen box assembly, an X-direction, Y-direction and Z-direction loading mechanisms mounted on the bracket, and control systems. Each loading mechanism includes four supporting posts in a rectangular arrangement, a first and second frames aligned with each other and fixedly connected to both ends of the four supporting posts, a loading hydraulic cylinder and a lead screw mounted on the two frames respectively.

IPC Classes  ?

• G01N 3/24 - Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
• G01N 3/313 - Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force generated by explosives
• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

Abstract

Disclosed is a method for distributed storage and use of mine groundwater. The method comprises the following steps: A. prospecting an area of an underground space to be mined, and acquiring data on the bedrock geology of the strata; B. observing the mine groundwater, and acquiring the conditions of the flow distribution, water quality data and water pressure data for the mine groundwater; C. designating one or more goaf spaces through which mine groundwater cannot permeate as a water storage space of a distributed underground reservoir according to the data on the bedrock geology of the strata acquired in step A and the conditions of the flow distribution, water quality data and water pressure data for the mine groundwater acquired in step B; and D. after the designated water storage space is formed, mine groundwater generated when mining a mining face adjacent thereto naturally seeps into the water storage space. The method can reduce mine groundwater run-off and the effect on the growth and recovery of the ecological environment.

IPC Classes  ?

• B65G 5/00 - Storing fluids in natural or artificial cavities or chambers in the earth
• E21C 41/16 - Methods of underground miningLayouts therefor
• E21F 16/00 - Drainage
• E21F 17/16 - Modification of mine passages or chambers for storage purposes, especially for liquids or gases

Abstract

A dynamics performance testing system, for use in testing the dynamics performance of an anchor rod or an anchor rode, comprising a main machine and a measurement and control system. The main machine comprises a vertical machine frame (1), a clamping apparatus (3) arranged on the top of the vertical machine frame (1) and used for vertically clamping the top end of a sample (6), where the sample (6) is provided at the bottom end thereof with a tray (61), a drop-hammering apparatus (2) used for being dropped vertically from the vertical machine frame (1) at a set height to impact the tray (61), a lifting apparatus used for lifting the drop-hammering apparatus at the bottom of the vertical machine frame (1) to the set height, and a protection apparatus used for physical protection and isolation to reduce bodily injury and noise. The measurement and control system controls the drop-hammering apparatus to select a parameter for drop-hammering and a process of lifting and dropping. The real-time impact on the tray (61) when the drop-hammering apparatus is dropped vertically is sensed by a force sensor, while real-time impact data received from a sensor device is analyzed, and a test result is outputted. The dynamics performance testing system is provided with versatility while the test result is accurate and reliable.

IPC Classes  ?

• G01N 3/303 - Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force generated only by free-falling weight
• G01M 7/08 - Shock-testing
• G01L 1/16 - Measuring force or stress, in general using properties of piezoelectric devices
• G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes

Abstract

An experimental method for simulating an impact rock-burst, comprises the following steps: making a rock sample having a through hole or a half hole; loading initial static stresses of three directions onto the rock sample; then loading dynamic load(s) by 0.5-10 minutes, to determine whether a spalling phenomenon appears on an internal surface of the hole; if appears, and the rock sample is further damaged, determining and recording a failure course, if not appears, increasing the static stress(es) or the intensity of the dynamic load, then repeating the experiment procedure as far as the rock sample goes into the failure course, then determining and recording the failure course, and ending the expierment. The impact rockburst induced by dynamic load is simulated in the rock sample successfully, and by sudying mechanical mechanisms of the rock-burst, the present application lays foundations for gradually understanding and mastering the nature of real rock burst.

IPC Classes  ?

• G01N 3/00 - Investigating strength properties of solid materials by application of mechanical stress
• G01N 3/02 - Investigating strength properties of solid materials by application of mechanical stress Details
• G01N 3/313 - Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force generated by explosives
• G01N 3/06 - Special adaptations of indicating or recording means
• G01N 3/30 - Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force
• G01N 24/08 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance

Abstract

A large deformation tensile testing system, for use in testing a large deformation tensile of an anchor rod or an anchor rode, comprising a main machine frame (1), a rear collet component (2) arranged at a first position on the longitudinal direction of the main machine frame (1), a front collet component (3) movably arranged at a second position on the longitudinal direction of the main machine frame (1), a telescoping apparatus (4), a measurement and control apparatus, where a sensor module thereof senses the displacement and real-time tensile of the telescoping apparatus to form real-time data to be transmitted to an analysis module and a control module, the control module that controls, on the basis of a set measurement and control scheme and of an input of the sensor module, a testing process to proceed according to a set testing condition, the analysis module for analyzing the input of the sensor module to form a test result, and an output module for outputting same. The large deformation tensile testing system is capable of deriving a statics parameter of the anchor rod or anchor rode being tested.

IPC Classes  ?

• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
• G01L 5/08 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using fluid means
• G01N 3/10 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
• G01M 5/00 - Investigating the elasticity of structures, e.g. deflection of bridges or aircraft wings

Abstract

A tension meter of an anchor rod with constant resistance and large deformation comprises a pull rod and a hollow jack. The meter further includes: a rotation device for controlling the rotation angle of the hollow jack; a lifter for adjusting the height of the hollow jack and the rotation device; a first hydraulic pump for driving the hollow jack, wherein the hollow jack is fixed on the rotation device mounted on the lifter. The meter has a large measurement range and a high load capacity.

IPC Classes  ?

• G01M 5/00 - Investigating the elasticity of structures, e.g. deflection of bridges or aircraft wings
• E21D 21/02 - Anchoring-bolts for roof, floor, or shaft-lining protection having means for indicating tension
• G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes

Abstract

A method for evaluating water inrush weakness of a coal seam floor comprises the following steps: collecting geological data of a to-be-evaluated target area to determine main control factors; quantizing the related data for the main control factors, to form a thematic map for each main control factor; uniformizing the property data corresponding to the thematic maps, and eliminating the impact of the dimension factor of the property data, to form a uniformized thematic map corresponding to each main control factor; establishing, by using the GIS, a database for storing the uniformized property data corresponding to the uniformized thematic maps; determining weight of each main control factor based on a constant weight module; determining variable weight of the main control factors based on separated variable weight modules; compositing and superposing the uniformized thematic maps corresponding to each single main control factor, to establish a topology relationship between the related data in the property database, for fitting analysis of the multiple factors; and establishing a weakness evaluation module based on the separated variable weight modules to evaluate the weakness of the coal seam floor. The data processing and evaluation process combining the separated variable weight modules and the constant weight module achieves high evaluation precision.

IPC Classes  ?

• G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)

Abstract

A calculating method for the diameter-to-thickness ratio of a lamellar material for a filler, which comprises: water washing a sample, placing same in an electric conduction solution, adjusting the pH value of the electric conduction solution, dispersing the sample in the electric conduction solution uniformly in a physical and ultrasonic manner, using a resistance method to place a micropore pipe in the electric conduction solution, placing an electrode respectively in the electric conduction solution inside and outside the micropore pipe, and applying a preset voltage on both ends of the electrode; according to a voltage pulse signal between the electrodes, calculating to obtain the diameter-to-thickness ratio of a lamellar of the sample; according to a resistance method instrument, measuring the volume V of the sample; making the volume of the sample equivalent to a pie shape, and according to the pulse width W of the voltage pulse signal, obtaining the length d of the sample; and according to the volume V of the sample and the length d of the sample, calculating to obtain the diameter-to-thickness ratio of the lamellar of the obtained sample of πd3/4V. The calculating method has a simpler and more convenient working manner and has the characteristics of convenient operation, low costs, good repeatability, high accuracy, strong general applicability and easy popularization.

IPC Classes  ?

• G01N 15/02 - Investigating particle size or size distribution

Abstract

A constant-resistance and large deformation anchor cable and a constant-resistance device are provided. The constant-resistance and large deformation anchor cable comprises cables (7), an anchoring device (13), a loading plate (12) and clipping sheets (4). The upper end of cables (7) is fixed on the anchoring device (13) and the loading plate (12) by clipping sheets (4). The constant-resistance and large deformation anchor cable also comprises a constant-resistance device, and the constant-resistance device comprises a sleeve (8) and a constant-resistance body (5). The sleeve (8) is a straight tube. The constant-resistance body is conical, and the diameter of the lower end of the constant-resistance body is bigger than the diameter of the upper end of the constant-resistance body. The inner diameter of the sleeve (8) is smaller than the diameter of the lower end of the constant-resistance body. A cuneiform part is arranged on inner wall of the lower end of the sleeve (8), and the constant-resistance body (5) is arranged on the cuneiform part. The strength of constant-resistance body (5) is higher than the strength of the sleeve (8), thus the sleeve (8) generates plastic deforming and the shape of the constant-resistance body (5) is not changed, when the constant-resistance body (5) moves in the sleeve (8). The lower end of the cables (7) is fixed on the constant-resistance body (5). The constant-resistance and large deformation anchor cable and the constant-resistance device have the properties of constant-resistance and preventing fracture, and can detect and early warn the all process of the activity of the landslides and the causative fault.

IPC Classes  ?

• E21D 21/00 - Anchoring-bolts for roof, floor, or shaft-lining protection
• E21D 20/02 - Setting anchoring-bolts with provisions for grouting
• E02D 5/80 - Ground anchors
• E21D 21/02 - Anchoring-bolts for roof, floor, or shaft-lining protection having means for indicating tension

Abstract

Disclosed is a method for distributed storage and use of underground water in a mine. The method comprises the following steps: A. inspecting an area of underground space to be mined, and acquiring data on the bedrock geology of the strata; B. surveying the underground water of the mine, and acquiring the conditions of the flow distribution, water quality data and water pressure data for the underground water; C. designating one or more goaf spaces through which underground water cannot permeate as a water storage space of a distributed underground reservoir according to the data on the bedrock geology of the strata acquired in step A and the conditions of the flow distribution, water quality data and water pressure data for the underground water acquired in step B; and D. after the designated water storage space is formed, underground water generated when mining a working face adjacent thereto naturally seeping into the water storage space. The method can reduce underground water run-off and the effect on the growth and recovery of the ecological environment.

IPC Classes  ?

• E21F 16/00 - Drainage
• E21F 17/16 - Modification of mine passages or chambers for storage purposes, especially for liquids or gases
• E21C 41/16 - Methods of underground miningLayouts therefor

Abstract

A dynamics performance testing system, for use in testing the dynamics performance of an anchor rod or an anchor rode, comprising a main machine and a measurement and control system. The main machine comprises a vertical machine frame (1), a clamping apparatus (3) arranged on the top of the vertical machine frame (1) and used for vertically clamping the top end of a sample (6), where the sample (6) is provided at the bottom end thereof with a tray (61), a drop-hammering apparatus (2) used for being dropped vertically from the vertical machine frame (1) at a set height to impact the tray (61), a lifting apparatus used for lifting the drop-hammering apparatus at the bottom of the vertical machine frame (1) to the set height, and a protection apparatus used for physical protection and isolation to reduce bodily injury and noise. The measurement and control system controls the drop-hammering apparatus to select a parameter for drop-hammering and a process of lifting and dropping. The real-time impact on the tray (61) when the drop-hammering apparatus is dropped vertically is sensed by a force sensor, while real-time impact data received from a sensor device is analyzed, and a test result is outputted. The dynamics performance testing system is provided with versatility while the test result is accurate and reliable.

IPC Classes  ?

• G01N 3/303 - Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force generated only by free-falling weight
• G01N 3/30 - Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force
• G01M 7/08 - Shock-testing

Abstract

An experiment method for a simulated impact-type rock burst, comprising the following steps: manufacturing a rock sample piece having a through hole or a half-formed hole; loading a three-way initial static load stress onto the rock sample piece; loading a disturbance load onto the rock sample piece for 0.5 to 10 minutes, observing whether or not a spalling phenomenon is found on the inner surface of the through hole or of the half-formed hole of the rock sample piece; if further destruction is found by observing whether or not the spalling phenomenon is found on the inner surface of the hole, then observing and recording the destruction process; if not, then increasing the value of the static load stress loaded onto the rock sample piece, or increasing the strength of the disturbance load and proceeding to repeat the experiment process until the rock sample piece enters the destruction process, observing and recording the destruction process, thus ending the impact rock burst experiment. Under the effect of the disturbance load, the experiment method successfully induces the occurrence of a rock burst phenomenon of the rock sample piece, and, by researching the mechanisms of the rock burst phenomenon of the rock sample piece, lays a foundation for gradual understanding and comprehension of the nature of actual rock burst phenomenon.

IPC Classes  ?

• G01N 3/313 - Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force generated by explosives

Abstract

A large deformation tensile testing system, for use in testing a large deformation tensile of an anchor rod or an anchor rode, comprising a main machine frame (1), a rear collet component (2) arranged at a first position on the longitudinal direction of the main machine frame (1), a front collet component (3) movably arranged at a second position on the longitudinal direction of the main machine frame (1), a telescoping apparatus (4), a measurement and control apparatus, where a sensor module thereof senses the displacement and real-time tensile of the telescoping apparatus to form real-time data to be transmitted to an analysis module and a control module, the control module that controls, on the basis of a set measurement and control scheme and of an input of the sensor module, a testing process to proceed according to a set testing condition, the analysis module for analyzing the input of the sensor module to form a test result, and an output module for outputting same. The large deformation tensile testing system is capable of deriving a statics parameter of the anchor rod or anchor rode being tested.

IPC Classes  ?

• G01L 5/08 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using fluid means
• G01L 5/04 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
• G01L 1/02 - Measuring force or stress, in general by hydraulic or pneumatic means
• G01N 3/10 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure

Abstract

A simulated impact-type rock burst experiment apparatus, comprising a machine frame (100), a specimen box assembly, a loading mechanism arranged on the x-axis direction of the machine frame (100), a loading mechanism arranged on the y-axis direction, a loading mechanism arranged on the z-axis direction, and a control system. The loading mechanisms of each of the directions comprise: four support columns (11, 21, and 31) arranged as a rectangle, first framepieces (12, 22, and 32) and second framepieces (13, 23, and 33) oppositely arranged and respectively fixed onto respective two ends of the four support columns, a loading hydraulic cylinder (14, 24, and 34) and a bolt (15, 25, and 35) respectively arranged upon each framepiece. The apparatus is capable of loading a static stress and a disturbance load onto a rock sample piece from three directions perpendicular to each other in a three-dimensional space, and can be used in a simulated impact-type rock burst experiment; also, the three sets of loading mechanisms have roughly identical structures, provide great symmetry, and allow for improved easiness and precision in terms of operation and control of loading the static stress or disturbance load onto the rock sample piece in the three directions.

IPC Classes  ?

• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

Abstract

A constant-resistance and large deformation anchor cable and a constant-resistance device are provided. The constant-resistance and large deformation anchor cable comprises cables (7), an anchoring device (13), a loading plate (12) and clipping sheets (4). The upper end of cables (7) is fixed on the anchoring device (13) and the loading plate (12) by clipping sheets (4). The constant-resistance and large deformation anchor cable also comprises a constant-resistance device, and the constant-resistance device comprises a sleeve (8) and a constant-resistance body (5). The sleeve (8) is a straight tube. The constant-resistance body is conical, and the diameter of the lower end of the constant-resistance body is bigger than the diameter of the upper end of the constant-resistance body. The inner diameter of the sleeve (8) is smaller than the diameter of the lower end of the constant-resistance body. A cuneiform part is arranged on inner wall of the lower end of the sleeve (8), and the constant-resistance body (5) is arranged on the cuneiform part. The strength of constant-resistance body (5) is higher than the strength of the sleeve (8), thus the sleeve (8) generates plastic deforming and the shape of the constant-resistance body (5) is not changed, when the constant-resistance body (5) moves in the sleeve (8). The lower end of the cables (7) is fixed on the constant-resistance body (5). The constant-resistance and large deformation anchor cable and the constant-resistance device have the properties of constant-resistance and preventing fracture, and can detect and early warn the all process of the activity of the landslides and the causative fault.

IPC Classes  ?

• E21D 21/00 - Anchoring-bolts for roof, floor, or shaft-lining protection

Abstract

A tension meter for an anchor rod with constant resistance and large deformation comprises a pull rod and a hollow jack (13). The meter further includes: a rotation device for controlling the rotation angle of the hollow jack (13); a lifter for adjusting the height of the hollow jack (13) and the rotation device; a first hydraulic pump (1) for driving the hollow jack (13), wherein the hollow jack (13) is fixed on the rotation device mounted on the lifter. The meter has a large measurement range and a high load capacity.

IPC Classes  ?

• G01L 1/02 - Measuring force or stress, in general by hydraulic or pneumatic means

Abstract

A system and method for testing gas migration process in the coal and rock mass are disclosed. The method includes the following steps: selecting a cylindrical coal sample, applying an axial pressure and a radial pressure to the coal sample under a sealing state, and/or increasing temperature, to desorb gas absorbed by the coal sample; guiding the gas desorbed from the coal sample by a guiding passage, detecting gas flow rate and pressure, analyzing gas composition and content, and achieving a data statistics. The method provides a theory and data basis for researching the forming and occurring process of gas outburst accident in coal mine. The system is simple and easy to use, and is suitable for migration research of the gas absorbed in the deep coal-rock mass.

IPC Classes  ?

• G01N 7/00 - Analysing materials by measuring the pressure or volume of a gas or vapour

Abstract

An earthquake disaster early-warning and forecasting method and system are provided. The method comprises setting a monitoring cable and a force sensor among fault planes of a seismic belt so as to detect the shearing force between the fault planes of the seismic belt, the force sensor and the monitoring cable are connected so as to sense the tension of the cable; calculating the shearing force between the fault planes of the seismic belt according to the following formuIa (I); wherein P is the shearing force between the fault planes of the seismic belt, M is the tension of the monitoring cable, α is a reinforcing angle of the tension of the monitoring cable, θ is an inclination between the fault plane of the seismic belt and horizon plane, φ is a weighted mean value of friction angles among each soil layer of the fault crush zone, and C is a weighted mean value of cohesive strengths among each soil layer of the fault crush zone; sending an earthquake early-warning and forecasting when the shearing force between the fault planes of the seismic belt exceeds an early-warning value.

IPC Classes  ?

• G08B 21/10 - Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
• G01V 1/00 - SeismologySeismic or acoustic prospecting or detecting
• G01L 1/00 - Measuring force or stress, in general

Abstract

A system and method for testing gas migration process in the coal and rock mass are disclosed. The method includes the following steps: selecting a cylindrical coal sample, applying an axial pressure and a radial pressure to the coal sample under a sealing state, and/or increasing temperature to desorb gas absorbed by the coal sample, guiding the gas desorbed from the coal sample by a guiding passage, detecting gas flow rate and pressure, analyzing gas composition and content, and achieving a data statistics. The method provides a theory and data basis for researching the forming and occurring process of gas outburst accident in coal mine. The system is simple and easy to use, and is suitable for migration research of gas absorbed in deep coal and rock mass.

IPC Classes  ?

• E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells