A method and system for monitoring structural deterioration of a reservoir rock mass under a long-time high-temperature condition, and a product are provided. The method includes: arranging ultrasonic transducers and fiber optic extrinsic Fabry-Perot interferometric (EFPI) sensors in a loading briquette; loading ultrasonic waves on a rock mass sample with the ultrasonic transducers; monitoring ultrasonic and acoustic emission signals at the rock mass sample with the fiber optic EFPI sensors; inverting a velocity model indicating a change of a wave velocity inside the rock mass sample over time by fast marching acoustic emission tomography using standard optimization (FaATSO) according to the ultrasonic and acoustic emission signals; and conducting joint inversion by a fast-marching method according to the velocity model, the acoustic emission signals, and observation data to determine a position of rock mass fracturing in the rock mass sample.
G01N 29/07 - Analysing solids by measuring propagation velocity or propagation time of acoustic waves
G01N 29/14 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
A real-time quantitative characterization method, equipment and a medium for rock mass evolution are disclosed. The method includes: the multiphase field detection and monitoring data is fused; a deep learning model driven by physical principles is established based on the physical principles of fluid density; the deep learning model is trained using real-time fused data as input and corresponding evolution distribution images as output; a trained deep learning model is used to obtain an evolution distribution image based on multi-phase field detection and monitoring data of different time periods and types; a mathematical model is used to quantitatively characterize of physical and mechanical parameters in the whole process of progressive failure of the dynamic evolution of the rock mass based on the macroscopic mechanical parameters and evolution distribution images synchronized with multiphase field detection and monitoring data.
The present disclosure provides a field quantitative analysis method and system of lithium, and relates to the technical field of field quantitative analysis of lithium. The method includes: measuring a laser-induced breakdown spectroscopy of a lithium-containing mineral, to obtain spectral data of the lithium-containing mineral; taking the spectral data as an input, and determining a mineral class of the lithium-containing mineral based on a trained mineral classification model; and taking the spectral data as the input, and determining content of lithium in the lithium-containing mineral based on a calibration curve corresponding to the mineral class.
G01N 21/71 - Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
4.
Multi-Objective Optimized Evaluation Method Of Anti-Seismic Performance Of Slope Reinforced By Pile-Anchor System
A multi-objective optimized evaluation method of anti-seismic performance of a slope reinforced by a pile-anchor system is provided. The method includes: training an initial three-dimensional slope numerical calculation model to obtain an target three-dimensional slope numerical calculation model; determining numerical values to be imported into the target three-dimensional slope numerical calculation model according to deformation differences, to obtain a model analysis result; obtaining a simulation operation result according to a reinforcement scheme working condition table of the pile-anchor system; based on the model analysis result and the simulation operation result, evaluating anti-seismic reinforcing performance of the pile-anchor system to obtain comprehensive evaluation values, and then optimizing and evaluating the reinforcement schemes of an overall slope to be reinforced.
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 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
G06F 111/06 - Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]
A method and system for determining an azimuth of a marsquake/moonquake event. The method includes: filtering the original waveform data to obtain filtered waveform data; intercepting filtered waveform data of a set time length to obtain first arrival waveform data of a P wave; performing data analysis on the first arrival waveform data of the P wave, determining the first arrival waveform data of the P wave of an east component as X-column data and the first arrival waveform data of the P wave of a north component as Y-column data; and performing optimal fitting on the X-column data and the Y-column data to obtain a first arrival elliptical locus of the P wave obtained after the optimal fitting, and determining an azimuth of a marsquake/moonquake relative to the single seismic station according to the first arrival elliptical locus of the P wave obtained after the optimal fitting.
G01V 1/32 - Transforming one recording into another
G01V 1/36 - Effecting static or dynamic corrections on records, e.g. correcting spreadCorrelating seismic signalsEliminating effects of unwanted energy
6.
Mesomechanics testing system and method integrating heating and observation
Provided are a mesomechanics testing system and method integrating heating and observation, relating to the field of rock mechanics testing. The system includes a control and collection module, a loading module, a vacuum module, and an observation module. The loading module and the observation module are both connected to the control and collection module; the loading module is configured to apply a load required by mechanics testing to a mesoscopic sample to be tested, and transmit mechanics testing data to the control and collection module; the vacuum module is configured to provide the mesoscopic sample with a vacuum space for real-time heating and mechanics testing; and the observation module is configured to collect image data of the mesoscopic sample during the mechanics testing, and transmit the image data to the control and collection module.
Yunnan Dianzhong Water Diversion Engineering Co. (China)
Inventor
Liang, Ning
Xu, Jing
Li, Shufang
Wang, Tao
Qi, Shengwen
Cong, Jianing
Zheng, Bowen
Guo, Songfeng
Wang, Xin
Ma, Lina
Song, Shuaihua
Li, Yongchao
Zou, Yu
Hou, Xiaokun
Wang, Zan
Zhu, Weiwei
Jin, Chao
Huang, Tianming
Kong, Yanlong
Zhang, Yuran
Abstract
A sample mounting device for direct tensile test of rock mass is provided, which includes a first positioning stage, a second positioning stage, a first support piece, a second support piece, and a screw drive mechanism. The second positioning stage is arranged above the first positioning stage and capable of moving up and down, and cushion blocks for gluing with the rock mass are coaxially and detachably arranged at opposite ends of the first positioning stage and the second positioning stage, and a rock mass mounting area is formed between the two cushion blocks. A screw of the screw drive mechanism includes a first thread segment and a second thread segment with opposite thread directions. The first support piece is connected with the first thread segment through a nut seat, and the second support piece is connected with the second thread segment through a nut seat.
Disclosed is a shielding device of source mounting and demounting for a nuclear logging instrument including a device base and a shielding device body. The device base is directly placed on the ground or a well stand. The shielding device body is slidably assembled in an embedded slideway of the device base. During source mounting operation, a worker takes a source from a source container, and a radioactive source passes through the shielding device body through a circular hole of the shielding device body to be installed. During the source demounting operation, the radioactive source and the worker are arranged on both sides of the shielding device body during the operation at an instrument end. Through such design, the worker is allowed to calmly mount and demount the source in a relatively low radiation field.
G01V 5/10 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources
G21F 1/08 - MetalsAlloysCermets, i.e. sintered mixtures of ceramics and metals
9.
METHOD, SYSTEM, AND DEVICE FOR FULL WAVEFORM INVERSION ON ELASTIC WAVE SEISMIC DATA
Disclosed are a method, system, and device for full waveform inversion on elastic wave seismic data. The method includes: constructing a convolutional neural network full waveform inversion module; determining a multi-scale inversion frequency based on the observation data; performing low-pass filtering on the observation data; determining an initial velocity and an RTM image corresponding to the current inversion frequency; determining a current inversion result by using the convolutional neural network full waveform inversion module based on the initial velocity and the RTM image corresponding to the current inversion frequency; determining whether inversion performed at the multi-scale inversion frequency is completed; if the inversion is not completed, performing inversion on a next frequency, performing smoothing processing on the inversion result, and replacing the initial velocity corresponding to the current inversion frequency with an inversion result obtained after smoothing processing until the inversion performed at the multi-scale inversion frequency is completed.
G01V 1/36 - Effecting static or dynamic corrections on records, e.g. correcting spreadCorrelating seismic signalsEliminating effects of unwanted energy
10.
METHOD AND SYSTEM FOR SIMULATING WATER-INDUCED ROCK STRENGTH DETERIORATION BASED ON DISCRETE ELEMENT METHOD
The present disclosure relates to a method and system for simulating water-induced rock strength deterioration based on a discrete element method, and relates to the field of simulation of water-induced rock strength deterioration. The method includes: determining mineral type and content information and simulation block parameters of a rock sample; preparing rock samples with different saturations; determining macro-mechanical parameters of the rock samples; calibrating the parameters; setting gradients for calibrated parameters; determining Young's moduli, uniaxial compressive strength, Brazilian tensile strength, contact cohesion and contact internal friction angles of a numerical model under different contact normal stiffness, different contact cohesion, different contact internal friction angles and different contact tensile strength; determining a relationship between various simulation parameters and macro-mechanical parameters obtained by simulation; determining predicted values of the simulation parameters; determining macro-mechanical parameters of the numerical model; and finely adjusting the predicted values of the simulation parameters.
G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
11.
Water-containing simulated lunar soil preparation and water content measurement system and method
A water-containing simulated lunar soil preparation and water content measurement system and method is provided. The system includes a water-containing simulated lunar soil preparation unit, a low-pressure environment simulation unit, and a water content analysis unit. The water-containing simulated lunar soil preparation unit includes a preparation pipeline, a low-temperature lunar soil cold trap, and a low-temperature water ice cold trap. Both ends of the preparation pipeline are connected with the low-temperature lunar soil cold trap and the low-temperature water ice cold trap through a first opening and closing valve and a second opening and closing valve, respectively. The low-pressure environment simulation unit includes a low-pressure pipeline provided with a vacuum pump. Both ends of the low-pressure pipeline are connected with the preparation pipeline and the water content analysis unit through a first pneumatic valve and a second pneumatic valve, respectively.
H01J 49/04 - Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locksArrangements for external adjustment of electron- or ion-optical components
The present disclosure provides a multi-scale three-dimensional (3D) engineering geological model construction system and method. A regional geological model of a target region, a site geological model of each engineering site, and a drilling geological model of each drilling well are constructed. The geological model of each drilling well is superimposed to the site geological model of the corresponding engineering site in the way of step-by-step superimposition, and the site geological model of each engineering site fused with the drilling geological model is superimposed to the regional geological model of the target region. Thus, multi-scale geological model fusion of drilling well, engineering site, and regional mountain is realized. The final multi-scale 3D engineering geological fusion model can provide multi-scale refined geological information for geological suitability evaluation of major geological engineering, so as to ensure accuracy of geological suitability evaluation and site selection of major geological engineering.
The present disclosure relates to a method and system for predicting a disturbance response to an injection of carbon dioxide into a multi-scale rock mass. The method includes: predicting a disturbance response to an injection of supercritical carbon dioxide into a multi-scale rock matrix; predicting a disturbance response to an injection of supercritical carbon dioxide into a multi-scale rock mass structure; and predicting a disturbance response to an injection of supercritical carbon dioxide into a multi-scale rock matrix-rock mass structure system. The method in the present disclosure can accurately analyze a cross-scale spatio-temporal evolution process of the multi-scale rock mass and seepage mechanics under disturbance of the injection of supercritical carbon dioxide.
G01N 24/00 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
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
14.
Method for joint measuring argon-argon age and cosmic ray exposure age of extraterrestrial samples
A method for joint measuring argon-argon age and cosmic ray exposure age of an extraterrestrial sample is provided. The method for joint measuring determining argon age and cosmic ray exposure age may include: step A, sample packaging; step B, placing the packaged samples into a neutron reactor for irradiation; and step C, determining Ar isotopes of the packaged samples after being performed with a neutron irradiation and thereby calculating argon-argon age and cosmic ray exposure age. The method can overcome the defects of the prior art, and achieve high-precision simultaneous determination of the argon-argon age and the cosmic ray exposure age of samples.
G01N 23/00 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or
G01T 1/167 - Measuring radioactive content of objects, e.g. contamination
H01J 49/26 - Mass spectrometers or separator tubes
G21G 1/02 - Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation, or particle bombardment, e.g. producing radioactive isotopes in nuclear reactors
15.
POLYMER-COATED NANOPARTICLES, COMPOSITE NANO-EMULSION, AND MACRO-EMULSION
Provided are polymer-coated nanoparticles, a composite nano-emulsion, and a macro-emulsion. In the polymer-coated nanoparticles, a polymer is self-assembled into a cage structure to coat nanoparticles, wherein the nanoparticles are made of an iron-containing metal oxide. The polymer-coated nano-particle shell provided in the present invention can be used as a stabilizer to prepare a composite nano-emulsion, and a stable macro-emulsion can be further prepared at an extremely low concentration. The problems of a high concentration of a surfactant and solid particles and the residence of solid particles at the oil-water interface often being required during the synthesis of a macro-emulsion and the surface tension being reduced so as to stabilize large oil droplets are thus overcome. The development of a simple and cost-reduced method for the synthesis of an emulsion in the present invention is of great significance.
C08J 3/03 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
A variable angle loading testing machine is provided, which may include a bottom plate and a base fixedly connected to the bottom plate. A rock-sample accommodating cavity is formed in the base, and a rectangle-shaped sample is suitable for being placed into the rock-sample accommodating cavity. A side of the base is fixedly connected to two arc-shaped tension beams arranged in parallel, and a variable angle loading mechanism is slidably connected between the two arc-shaped tension beams. Through-holes are formed on the base, and an output end of the variable angle loading mechanism abuts against the rectangle-shaped sample through one of the through-holes. Loading and unloading of a stress with variable direction and magnitude under excavation disturbance can be simulated, which is of great significance for understanding mechanical behaviors of rock-soil mass under excavation disturbance.
A data optimization method and an integral prestack depth migration method are provided, including acquiring a target matrix to be optimized; generating a first sequence according to the target matrix; rarefying the first sequence according to a preset grid density to obtain a value position of each element of a second sequence, and working out a value of each element of the second sequence on the basis of the principle of least squares; performing interpolation on the second sequence to obtain a third sequence; calculating a target matrix corresponding to the third sequence; calculating an error between the target matrix to be optimized and the target matrix corresponding to the third sequence; recording, when the error is less than the first error threshold, the target matrix corresponding to the above second sequence as an optimized target matrix of the target matrix to be optimized.
G01V 1/36 - Effecting static or dynamic corrections on records, e.g. correcting spreadCorrelating seismic signalsEliminating effects of unwanted energy
A soft-switching control circuit of a boost-type PFC converter is provided. The boost-type PFC converter is a three-phase six-switch boost-type PFC converter, which includes six primary switching transistors and an auxiliary switching transistor. The control circuit includes a primary switch control circuit configured to output driving signals for the primary switching transistors by a one-cycle control algorithm to drive two of the primary switching transistors, and an auxiliary switch control circuit configured to provide a reset signal to the primary switch control circuit for governing a command from the primary switch control circuit to the primary switching transistors. The auxiliary switch control circuit outputs a driving signal for the auxiliary switching transistor to control the auxiliary switching transistor. The primary switch control circuit includes a section selecting circuit, an integrating circuit, a merging circuit and a comparing circuit. Therefore, the disclosure can reduce cost with the simple control.
H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
H02M 7/219 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
The invention provides a method for preparing microporous mineral fertilizer from silicates rock using hydrothermal chemical reaction, characterized in mixing silicates rock powder, solonetz initiator powder and activator powder and making hydrothermal reaction under subhumid condition. The mineral substances contained in silicates rock can be converted to active forms which are easily absorbed by plants, with transformation rates of 65-95%. The multiplex material fertilizer produced by such method has special microporous structure.
C05B 11/16 - Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using alkaline lyes
C05D 11/00 - Mixtures of fertilisers covered by more than one of main groups
C05D 1/04 - Fertilisers containing potassium from minerals or volcanic rocks
patents
