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95 results about "Mine water inrush" patented technology
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Fiber mine water inrush precursor information monitor
InactiveCN101696639AAchieve separationRealize quasi-distributed real-time monitoringMining devicesThermometers using physical/chemical changesSensor arrayReal time analysis
The invention provides a fiber mine water inrush precursor information monitor comprising a sensor array, a fiber splitter, a fiber grating demodulation device and a computer. The sensor array comprises a fiber temperature sensor, a fiber strain sensor, a fiber displacement sensor and a fiber osmotic pressure sensor which are all fiber grating sensors, and temperature, strain, displacement, osmotic pressure, and other physical quantities collected by the fiber grating sensors are sent to the fiber grating demodulation device by the fiber splitter through optical fibers; and the fiber grating demodulation device converts collected light wavelength signals into electric signals and finally sends the electric signals to the computer, and the computer analyzes and monitors on-site information by a software system in real time.
Owner:SHANDONG UNIV
Comprehensive treatment method of mine water inrush
The invention relates to the field of controlling underground water inrush disaster for mining projects and relates to a comprehensive treatment method of mine water inrush. The method includes the steps of setting a mine hydrogeology observation network; measuring a mine underwater supply area, a mine drainage area and a mine runoff area; exploring and measuring a water guide passage and fissures of the mine underwater supply area; determining and implementing a grouting curtain blocking scheme of the mine underwater supply area; designing and implementing a drainage treatment scheme of the mine drainage area, and after implementing the grouting curtain blocking scheme, performing underwater drainage treatment in the mine drainage area; implementing a scheme for dynamic monitoring of mine underwater level and information-based dredging and blocking treatment, during underwater drainage treatment in the mine drainage area, and dynamically monitoring the underwater level in the mine runoff area to finish the scheme.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
Underground flood alarm system based on image and water inflow monitoring device
The invention discloses an underground flood alarm system based on an image and water inflow monitoring device. Cameras are installed on driving working faces, coal faces, or other working faces of an underground coal mine to which water inrush accidents may occur, and the cameras are connected with the image and water inflow monitoring device and a video server through a video branching unit. The image and water inflow monitoring device acquires water inflow data, and monitors onsite videos and water inflow data, and sends flood alarm data to a monitoring terminal according to a monitoring result. Production management persons can check onsite real-time and historical videos through the monitoring terminal, and carry out corresponding emergency processing. The alarm system gives full consideration on characteristics of floods in a coal face of an underground coal mine, and the system is simple to apply. Corresponding measures are automatically taken in time, and the system accurately gives out an alarm on mine water inrush in first time, and buys valuable disaster relief and escape time for underground personnel who are not on the site of the water inrush in other regions.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Underground flood alarm method based on image and water sump monitoring
The invention discloses an underground flood alarm method based on image and water sump monitoring. The alarm method includes the steps that cameras are placed on an underground coal mine tunneling working face, a coal working face or other operation faces possibly having a water inrush accident, and a water sump liquid level monitoring device and a water discharge monitoring device are placed in a downstream water sump of a drainage channel of a roadway monitored by each camera; when it is monitored that abnormal water flow appears in a set region in video images of the cameras, moreover, the duration time of the water flow exceeds a set time threshold value or water flow increasing speed exceeds a set threshold value, and meanwhile water intake quantity of the corresponding water sump is abnormal, a flood alarm signal is sent out. The alarm method fully considers the characteristic of a coal mine coal working face flood and is easy to implement, corresponding measures are taken automatically in time, an alarm can be given for water inrush of a coal mine accurately at first time, and valuable rescue and escape time is bought for underground staff, not at the flood site, in other regions.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Method for monitoring and positioning crack development areas in coal and rock fracture procedures by means of infrared radiation
InactiveCN106018096APreserves infrared radiation (transient) change characteristicsEffective extraction of infrared radiation featuresMaterial strength using tensile/compressive forcesNODALSequence diagram
The invention provides a method for monitoring and positioning crack development areas in coal and rock fracture procedures by means of infrared radiation, and relates to the field of water conservation mining and rock stratum control. The method is applicable to detecting crack development laws and development locations in coal and rock fracture research procedures. The method includes determining bearing coal and rock fracture and failure time nodes by the aid of variance indexes of successive difference infrared thermal imaging sequence diagrams; extracting infrared thermal imaging diagrams at current moments according to the time nodes on the basis of the time nodes to position the crack development areas at bearing coal and rock fracture moments so as to temporally and spatially predict the crack development areas. The method has the advantages that research results can be applied to monitoring and controlling human engineering disasters such as coal (rock) burst and mine water inrush due to bearing coal and rock fracture, and the method particularly has scientific significance on enriching water conservation mining and rock stratum control theories for mines.
Owner:CHINA UNIV OF MINING & TECH
Method for identifying mine water-inrush source
InactiveCN103617147AImprove diagnostic accuracyScience of Modeling MethodsTesting waterSpecial data processing applicationsWater sourceEvaluation finding
The invention relates to a method for identifying a mine water-inrush source. On the basis of obtaining main aquifer types of a mine, water chemical data of each aquifer are extracted, and a classification model between the water chemical data and the aquifers is built. A mine water-inrush source classification and identification model is built through the method of a particle swarm optimization classifier, testing samples are detected through the built mine water-inrush source classification and identification model, and mine water source identification based on LSSVM and mine water source identification based on LS-SVM of particle swarm optimization are compared. The detection result shows that the method is obviously better than an LS-SVM model not adopting PSO model optimization and well overcomes the defect that as an existing water-inrush layer water source identification method needs to suppose a mode in advance or subjectively stipulate some parameters, the subjectivity of the evaluation result is high. The method of building the models is more scientific, and the built PSO-LS-SVM module has good generalization ability.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
BN-GIS (Bayesian Network-Geographic Information System) method for evaluating and predicting water inrush danger of coal-seam roof and floor
InactiveCN102194056ASimplify the logical cognition of water inrushTake advantage ofGenetic modelsSpecial data processing applicationsSpatial analysisIndex system
The invention relates to a quantitative evaluation method for water inrush danger of coal-seam roof and floor. On the basis of systematic analysis of coal-mine hydrological and geologic features and in combination with the traditional mining conditions, an evaluating indicator system for coal-mine water inrush safety situation is established; based on the classification of water inrush, a water inrush situation prior probabilistic model is established; and according to the data of faultage water transmissibility, fold strength, water pressure in the water-bearing strata and other aspects in a coal-mine water-filling system, sub thematic graphs for safety situation evaluation factors are established. Combined superimposition analysis is performed on nine thematic graphs on the faultage water transmissibility, fold strength and the like by utilizing the spatial analysis function of a GIS; a BN model is established by virtue of parameter learning and network reasoning and is used for calculating conditional probability and reckoning the posterior probability of the water inrush danger according to the calculated prior probability; and according to the BN (Bayesian network) model, the water inrush danger on coal-seam coalface roof and floor on the premise of the existing mining intensity are dynamically evaluated and predicated, and the water inrush danger on the coal-seam coalface roof and floor on the premise that the mining intensity is enhanced in order to complete the increased task are dynamically evaluated and predicated.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Principal component analysis-extreme learning machine (PCA-ELM) based coal mine water inrush prediction method
InactiveCN103745093AReduce structural complexityRemove overlapSpecial data processing applicationsLearning machineData validation
The invention relates to a PCA-ELM based coal mine water inrush prediction method and belongs to the field of coal mine water inrush prediction methods. The method comprises the steps of obtaining a plurality of data affecting coal mine water inrush in the coal mine normal exploitation running state; screening a plurality of factors affecting coal mine water inrush through the PCA to obtain a main controlling factor playing a decisive role in coal mine water inrush; partitioning sample data only containing the main controlling factor into a training set, a verification set and a testing set which are corresponding to model training, verification and testing respectively; building an ELM network model, and training the data through the ELM algorithm; verifying a coal mine water inrush prediction model through the verification data, beginning to rebuild a model from the PCA if the obtaining prediction result has no apparent advantages compared with other algorithms, and using the model as the prediction model for actually predicting the coal mine water inrush prediction condition if the prediction result is ideal.
Owner:CHINA UNIV OF MINING & TECH
Bidirectional variable cross-section water-pressure bearer cycle test system for coal mine water inrush model test
ActiveUS20160327449A1Improve accuracyImprove applicabilityHydrodynamic testingWater dischargeWater storage tank
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 has a water supply tank, a loading water pump, a water piezometer, a water control valve, a water inlet pipe, a water discharge pipe, etc., through the loaded water pressure to control the cyclic loading of the water pressure. The water-pressure bearer portion has a variable cross-section water-pressure bearer assembly and a airtight main frame variable water-level water-pressure bearer assembly. The variable cross-section water-pressure bearer assembly has a cross-section water storage tank, a cross-section water baffle and a cross-section porous plate, and the water-pressure bearer assembly has a water-level water storage tank, a water-level water baffle and a water-level porous plate, which through loading or unloading the size of water control the bidirectional variable cross-section water-pressure bearer cycle.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Embedding method of combination transducer for early warning and monitoring of water inrush disaster of mines
The invention particularly relates to an embedding method of a combination transducer for the early warning and monitoring of water inrush disaster of mines. Water trouble in the mines threatens the life safety of miners constantly and is the puzzle of underground mining industry, and researchers who study the prevention and control of the water trouble in the mines do a large number of study practical works over the years to summarize the technology of preventing and controlling water inrush. The embedding method comprises the following steps of: after quartz sand is paved at the bottoms of two or three drill holes in the same drill fossa and is tamped, conveying the drill holes to a hydrochemical transducer, a water-pressure transducer and a temperature transducer, filling medium-coarse sand with a plurality of thicknesses into the upper parts of the drill holes, and filling puddle with a plurality of thicknesses in the drill holes for tamping; injecting cement paste into the drill holes, and then putting a stress transducer into the cement paste; and putting a strain transducer on the upper part of the stress transducer and injecting the cement paste. In the embedding method, a plurality of transducers in different types are arranged in one hole, so that the method for monitoring the water inrush of the mines has the advantages of practicality, low cost, high efficiency and strong innovation.
Owner:煤炭科学研究总院西安研究院
Method for stopping inrushing of goaf water of mine
ActiveCN103982203AAvoid spreadingReduce the number of casualtiesUnderground chambersTunnel liningWater flowAirbag
The invention provides a method for stopping inrushing of goaf water of a mine, relates to the method of stopping water inrushing of a coal mine, and aims at solving the problem that the inrushing of the goaf water cannot be effectively stopped by the existing method and causes frequent inrushing accidents. The method is characterized in that a laneway water stopping section is arranged at a position about 5m from the back of an excavating working surface, and a flexible water stopping device with flexible water stopping airbags is arranged in the laneway water stopping section; when the goaf water inrushes, the flexible water stopping airbags hung on the top part or two sides of the laneway are quickly inflated and expanded to fill the section of the whole laneway, so as to stop the inrushing water, prevent stream from spreading, and gain time for people escaping and providing disaster relief. The method for stopping inrushing of goaf water of the mine is applicable to stopping of inrushing of the coal mine and has the advantages of being simple, reliable, high in safety, low in cost, and easy to be implemented.
Owner:TAIYUAN UNIV OF TECH
Coal mine water inrush disaster pre-warning method and device
ActiveCN105179014AMonitor water pressure in real timeDiscovery of water inrushMining devicesWater qualityComputer module
The invention discloses a coal mine water inrush disaster pre-warning method and device. The method includes: according to features of mining coal beds, dividing a mining area into a coal mining layer, a monitoring layer and a pre-warning layer; constructing a monitoring hole in the pre-warning layer; mounting the pre-warning device, and monitoring water pressure, water quality and water temperature data at the same time. The pre-warning device comprises a sensing device and a power source storage alarming device which are connected through a transmission guide pipe, the transmission guide pipe is arranged in a steel pipe sleeve, the sensing device is arranged in a sealing device and comprises a water pressure sensor, a water quality sensor and a temperature sensor, the power source storage alarming device comprises a processor used for processing data, a power source module and a storer, and the power source module and the storer are connected with the processor which is further connected with an alarm.
Owner:YANKUANG GRP CO LTD +1
Underground flood alarm method based on image and water inflow monitoring
The invention discloses an underground flood alarm method based on image and water inflow monitoring. The alarm method includes the steps that cameras are placed on an underground coal mine tunneling working face, a coal working face or other operation faces possibly having a water inrush accident, and a flow monitoring device is placed at a downstream position of a drainage channel of a roadway monitored by each camera; when it is monitored that abnormal water flow appears in a set region in video images of the cameras, moreover, the duration time of the water flow exceeds a set time threshold value or water flow increasing speed exceeds a set threshold value, and meanwhile the flow of the corresponding drainage channel is abnormal, a flood alarm signal is sent out. The alarm method fully considers the characteristic of a coal mine coal working face flood and is easy to implement, corresponding measures are taken automatically in time, an alarm can be given for water inrush of a coal mine accurately at first time, and valuable rescue and escape time is bought for underground staff, not at the flood site, in other regions.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Mine water inrush disaster avoiding path planning method and device based on improved A* algorithm
ActiveCN109724606AReduce casualtiesIncreases chances of successful escapeNavigational calculation instrumentsWater levelOmega
The invention provides a mine water inrush disaster avoiding path planning method and device based on an improved A* algorithm. The method comprises the following steps: acquiring information about the intrinsic attributes of an escape tunnel and the water level height in the escape tunnel, and determining the influencing coefficients of the intrinsic attributes of the escape tunnel and the waterlevel height in the escape tunnel based on the determined information; determining actual cost from an initial node to a node n based on the influencing coefficients and the actual length of the escape tunnel; determining an improved A* algorithm, wherein an evaluation function expression is f(n)=(1+omega(n)[alphag(n)+betah(n)], f(n) is an evaluation function from the initial node to a target nodevia the node n, g(n) is the actual cost from the initial node to the node n, h(n) is the estimated cost of an optimal path from the node n to the target node, alpha and beta are constant value weights, and omega(n) is a dynamic weight; and acquiring an optimal path from the initial node to the target node based on the algorithm.
Owner:BEIJING INFORMATION SCI & TECH UNIV
Underground flood alarming method based on image and flood monitoring
The invention discloses an underground flood alarming method based on image and flood monitoring. The method comprises: placing cameras on driving working faces, coal faces, or other working faces of an underground coal mine to which water inrush accidents may occur, and installing water sensors on walls of roadways the cameras monitor; when the sensors monitor that a set region of a camera video image has abnormal water flow, and water flow duration exceeds set time threshold or flow increasing speed exceeds a set threshold, and a detector of the water sensor is immersed, giving out a flood alarming signal. The alarming method gives full consideration on characteristics of floods in an underground coal mine, and the method is simple to apply. Corresponding measures are automatically taken in time, and the method accurately gives out an alarm on mine water inrush in first time, and buys valuable disaster relief and escape time for underground personnel who are not on the site of the water inrush and in other regions.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Multi-level coal mine water inrush prediction method based on SaE-ELM (self-adaptive evolutionary extreme learning machine)
InactiveCN104156560AFacilitate safe production managementAvoid randomnessSpecial data processing applicationsMining engineeringCoal
A multi-level coal mine water inrush prediction method based on an SaE-ELM (self-adaptive evolutionary extreme learning machine) includes the steps of 1, researching a coal mine water inrush mechanism and selecting main controlling factors causing coal mine water inrush; 2, searching for a great deal of coal floor water inrush historical data as sample data, with each set of data including main controlling factors and maximum water inrush; 3, dividing the sample data into a training set and a test set, applied to training and testing of a model, respectively; 4, training the sample data with the SaE-ELM to establish a prediction model; 5, testing the prediction model with the data of the test set, comparing obtained prediction results with those obtained by other algorithms; if the prediction precision is high and the speed is high, using the prediction model for predicting whether a coal mine suffers water inrush or not and predicting the degree of water inrush.
Owner:CHINA UNIV OF MINING & TECH
Complex multi-aquifer mine water inrush water source identification method
ActiveCN109993459AImprove speedImprove accuracyGeneral water supply conservationCharacter and pattern recognitionPattern recognitionWater source
The invention discloses a complex multi-aquifer mine water inrush source identification method, which comprises the following steps: S1, establishing a mine water source database according to water chemical data of a known aquifer water sample; S2, taking the data subjected to data inspection and abnormal value processing as a modeling sample; S3, determining an identification index and a threshold value thereof, and judging the effectiveness of the identification index in the preliminary identification model by adopting back-substitution inspection; S4, according to the effective identification index and the Fisher identification method, establishing a comprehensive-stepwise identification method model; and S5, determining the identification index of the water sample to be determined, anddetermining and identifying the type of the water source through a comprehensive-stepwise identification method model. The method has the advantages that a characteristic ion contrast method, an ionproportionality coefficient method, a Fisher recognition method and the like are comprehensively adopted, different methods are adopted for water source recognition of different water-bearing layers,the method is simple and then complex, and mine water source types with complex hydrogeological conditions and more water-filled water-bearing layers are judged step by step.
Owner:ANHUI UNIVERSITY +1
Mine water-inrush treatment multiplex system and treating method thereof
InactiveCN102616957AEasy to useAvoid siltingWaste water treatment from quariesMultistage water/sewage treatmentWater qualityManganese
The invention discloses a mine water-inrush treatment multiplex system and a treating method thereof. The adopted technical scheme is that the mine water-inrush multiplex system comprises a pre-precipitation unit, a gob and an aeration oxidizing filtering unit, and mine inrush water is guided to flow through the pre-precipitation unit, the gob and the aeration oxidizing filtering unit sequentially. The system and the treating method have the advantages that the mine inrush water first passes through the pre-precipitation unit to remove a large amount of suspended matter with coal powder and rock waste as the main thing before entering the gob, thereby avoiding the fact that the font end of the gob has siltation and is blocked by the suspended matter and effectively prolonging serve life of the gob. Water from the gob enters the aeration oxidizing filtering unit, substances such as iron and manganese in the mine inrush water can be effectively removed, and outlet water quality can be ensured. The whole mine water-inrush treatment multiplex system is short in flow, less in power equipment and apt to achieve automation. The method is simple and convenient to achieve, low in cost, high in efficiency and good in water quality purification effect.
Owner:兖矿能源集团股份有限公司 +1
Auxiliary method for early warning of coal mine water inrush disaster based on neural network
The invention belongs to the technical field of coal mine water inrush early warning, and particularly relates to an auxiliary method for early warning of a coal mine water inrush disaster based on aneural network. The method comprises the specific step I of finding monitoring points, and arranging monitoring equipment; the step II of linking the monitoring equipment, and setting procedures; thestep III of outputting the set procedures into a controller, and linking the controller to the monitoring equipment; the step IV of starting the equipment for early warning of water inrush, and comparing set values according to the monitored water inrush level and the number of the water inrush positions; the step V of selecting the alarm level according to the comparison information, performing real-time monitoring and linkage through a plurality of monitoring points, and comparing with the set values according to the linkage information for obtaining the early warning level; and giving an alarm in different modes according to the early warning level. The situation that multiple water inrush disasters in a small range occur simultaneously and consequently an early warning system is triggered can be avoided effectively.
Owner:XIAN UNIV OF SCI & TECH
Coal mine underground water prevention and control early warning system and method and application
PendingCN114046178AAccurate detectionEffective predictionSurveyMining devicesHydrometryChemical database
The invention belongs to the technical field of coal mine early warning, and discloses a coal mine underground water prevention and control early warning system and method and application, and the method comprises the following steps: an advanced exploration and stope face water disaster prediction system carries out coal mine water-containing structure and water guide condition detection, and determines stope face water disaster prevention and control technical measures; the underground water dynamic monitoring system acquires and analyzes corresponding data of underground water by using the mining area hydrological dynamic monitoring system; the mine water source rapid discrimination system is based on existing mine data, adopts geophysical prospecting, drilling and geochemical prospecting methods to carry out testing, analysis and determination of mining area water chemical background characteristics, establishes a mining area water chemical database, establishes a discrimination model of water quality of different aquifers in a well field, and rapidly discriminates various water bursting sources. According to the method, mine water inrush prediction and early warning can be carried out in time, targeted water prevention and control measures can be taken in a targeted mode, and safe, economical and reasonable production of a mine and comprehensive utilization of water resources are guaranteed.
Owner:云南滇东雨汪能源有限公司 +1
Evaluation method of mine submergence process under different conditions of water inrush or permeability
ActiveCN109063230AStable supportEfficient SupplementClimate change adaptationDesign optimisation/simulationMomentumSpatial structure
The invention discloses an evaluation method of mine submergence process under different water inrush or permeability conditions, which comprises establishing a conceptual model of mine water inrush or permeability submergence process according to the variation characteristics of water inrush or permeability flow rate and the spatial structure characteristics of the mine; constructing one-dimensional directional topological structure model of mine network; the continuity equation and momentum equation are established on the mine section respectively, and the connection equation is establishedat the fork point. Combined with the initial condition and boundary condition, the mathematical model of water inrush or permeability submergence process is established with the water level and discharge as variables. The finite difference algorithm is used to establish the numerical model of mine water inrush or permeability submergence process and to solve it. Quantitative evaluation of mine submergence process is carried out according to the result of solution. The invention can accurately calculate and reasonably evaluate the mine submergence process on the premise of guaranteeing the calculation stability and efficiency according to different water inrush (permeability) conditions.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Mine water inrush real-time monitoring, early warning and escape guide system
InactiveCN105185040ARealize real-time monitoringRealize dynamic correctionMeasurement devicesAlarmsWireless ad hoc networkSelf-organizing network
The invention provides a mine water inrush real-time monitoring, early warning and escape guide system and belongs to the mine early warning technical field. The system includes a mine water inrush monitoring and early warning device and a mine water inrush simulation system; the mine water inrush monitoring and early warning device includes host machines, slave machines a switch and a server; the mine water inrush simulation system is hosted by the server; after the server establishes a mine three-dimensional model and positions the position of the slave machines, the slave machines transmits mine information with appointed time intervals through a wireless ad hoc network, wherein the mine information is monitored in real time by sensor modules of the slave machines; the host machine integrates slave machine information and transmits the information to the server, so that water inrush simulation can be carried out; and after being dynamically corrected, simulation results are respectively transmitted to managers and underground personnel in the forms of dynamic simulation display and switching on guide lights. Related data of the system can be used for later-stage analysis and research. With the mine water inrush real-time monitoring, early warning and escape guide system adopted, a whole process before and after water inrush can be dynamically displayed in a simulated manner, and personnel positioning can be realized, and mine water inrush rescue can be effectively assisted.
Owner:UNIV OF SCI & TECH BEIJING
Nonlinear identification method for mine water inrush source
InactiveCN106971073AOptimize learning parametersReduce training parametersCharacter and pattern recognitionInformaticsKernel principal component analysisWater source
The invention relates to a nonlinear identification method for a mine water inrush source. The method comprises the following steps of (1) collecting spectrum data; (2) preprocessing the collected original spectrum data by utilizing a Savitzky-Golay (SG) smoothing technology; (3) performing data dimension reduction by utilizing a nonlinear kernel principal component analysis method, and performing nonlinear feature extraction; (4) establishing independent test set and training set by collected water samples; and (5) establishing an ELM by utilizing the training set, and then performing classification result testing through the test set. According to the method, the feature extraction is performed in a nonlinear way, so that the time and space complexity is lowered and the sample identification performance is provided; the kernel principal component analysis optimizes learning parameters of the ELM; an ELM classification model has the characteristics of few training parameters, high learning speed and the like; the KPCA and the ELM are combined for nonlinear identification of the mine water inrush source; and the method is very suitable for online water inrush source monitoring.
Owner:ANHUI UNIV OF SCI & TECH
Coal mine water inrush source discrimination method and system
ActiveCN110276116AAccurate and fast discriminationPrecious time for emergency rescue and disaster reliefGeneral water supply conservationDesign optimisation/simulationPattern recognitionWater source
The invention relates to a water inrush source discrimination method, belongs to the technical field of coal mines, and particularly relates to a coal mine water inrush source discrimination method. The method comprises: combining a combination weight and improved set pair analysis; establishing a combined weight set pair analysis model; using the objective weight of entropy weight calculation and the subjective linear combination of improved analytic hierarchy process calculation as the combination weight. The problems that recognition factor weight calculation is inaccurate and calculation is difficult are solved. The problem that the membership degree of the water inrush source is difficult to determine is solved through the set pair model, and the recognition accuracy of the water inrush source is improved through the water inrush source recognition method.
Owner:XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
Method for determining permeability coefficient of loose confined aquifer based on coal mine geological drilling
PendingCN113109228AThe permeability coefficient is accurateMany pointsPermeability/surface area analysisSoil scienceMultiple linear regression analysis
Owner:HEFEI UNIV OF TECH
An auxiliary method for early warning of water inrush disaster in coal mine
ActiveCN109345140AOptimize site layoutImprove the effect of early warningResourcesEarly warning systemContinuous evaluation
The invention provides an auxiliary method for early warning of coal mine water inrush disaster, which comprises the following steps: establishing an evaluation index system of a key monitoring area;calculating the data of a continuity evaluation index of any point in the study area through Kriging interpolation to obtain the continuity evaluation index data of a spatial evaluation point in the study area; and calculating the continuity evaluation index data of the spatial evaluation point in the study area. The discontinuous evaluation index is transformed into continuous evaluation index byrisk index. At least one evaluation index is obtained by the statistical algorithm of the evaluation index. The at least one evaluation index is inputted into a BP artificial neural network model designed by the ANN, the risk factors of each spatial evaluation point are outputted, and the key monitoring area is determined. The auxiliary method of water inrush disaster early warning provided by the invention can carry out grade evaluation on the water inrush early warning monitoring area of the coal mine, delineate the key monitoring position, optimize the field arrangement of the early warning system, and improve the early warning capability and the early warning accuracy of the early warning system.
Owner:NORTH CHINA INST OF SCI & TECH
Method for determining installation position of mine disaster blocking emergency refuge device
InactiveCN106126946APrevent proliferationEasy to installInformaticsSpecial data processing applicationsShock waveFlame propagation
The invention discloses a method for determining the installation position of a mine disaster blocking emergency refuge device. The installation position of the mine disaster blocking emergency refuge device is obtained through calculation according to the relation between the distance between a gas blasting source and a protected object and the air shock wave overpressure value, and the rationality of the installation position of the mine disaster blocking emergency refuge device is verified through gas blasting flame propagation time, personnel evacuating time and the starting time of the mine disaster blocking emergency refuge device; aiming at a mine flooding accident caused by mine water inrush, the installation position of the mine disaster blocking emergency refuge device for preventing mine water inrush is determined through water level upward rising time, water flow downward pervasion time, the personnel evacuating time and the starting time of the mine disaster blocking emergency refuge device; the reference for determining the installation position of the mine disaster blocking emergency refuge device is characterized in that the personnel evacuating time Tr is longer than the starting time Tz of a photoelectric induction or impact sensor and the mine disaster blocking emergency refuge device, and the starting time Tz of the photoelectric induction or impact sensor and the mine disaster blocking emergency refuge device is not shorter than the maximum value of the flame propagation time TB and the water level upward rising time Ts in the gas blasting process.
Owner:ANHUI UNIV OF SCI & TECH
Mine water inrush source identification method and identification system based on big data and deep learning
PendingCN111562285AAccurate identificationImprove accuracyMaterial analysis by electric/magnetic meansNeural architecturesWater sourceDetector array
The invention discloses a mine water inrush source identification system based on big data and deep learning. The mine water inrush source identification system comprises a ground workstation, an acquisition device and a computer detection module. The mine water inrush source identification method based on big data and deep learning comprises the following steps of: S1, performing classification according to known chemical component characteristics of a regional water source, and establishing a sample library; S2, when water inrush occurs in the mine, pumping the inrush water into a containerthrough a liquid pump for storage; S3, detecting and analyzing each chemical component in the inrush water through an electrode detector array module, and determining the content of each chemical component; and S4, inputting the chemical components into a data processing module for processing. According to the invention, the internal multi-layer characteristics of a water sample are autonomously obtained through a deep feedforward network model based on deep learning, repeated training, error prediction and model parameter adjustment are carried out, the accuracy is improved along with increase of water sample information, and water inrush source identification is still accurate under the condition of big data.
Owner:ANHUI UNIVERSITY +1
Method and experiment device for seepage law research
ActiveCN103837324ASolve engineering problems such as water inrush predictionHydrodynamic testingWater storageWater source
The invention relates to a method and experiment device for a seepage law research, and belongs to the field of fluid dynamics and seepage dynamics research. Equations of the seepage law research is obtained according to an action science (please see the formula in the specification). The experiment device for the seepage law research mainly comprises an underground body, wherein the underground body is provided with a water supply area and a water storage basin area, the water supply area is communicated with a groundwater area through a seepage channel, a natural discharge channel is formed in the bottom of the water storage basin area, and an artificial discharge channel is formed inside the water storage basin area. The method and experiment device for the seepage law research mainly solves the engineering problems such as a hydrologic geology problem, a mine water inrush forecasting problem and the like, and can be used for the research of other groundwater seepage laws.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
Device for rapidly distinguishing water inrush source of mine
ActiveCN104297308AReduce security threatsDiscrimination speed is fastMaterial electrochemical variablesProcess systemsMicrocontroller
The invention discloses a device for rapidly distinguishing a water inrush source of a mine. The device comprises a shell panel which is provided with a power input interface, a switching on / off button, a mode conversion switch, a function button, a display screen, a micro-USB interface and an ion electrode connecting line interface; a circuit board arranged in a shell takes a singlechip as a core and is connected with the display screen, an A / D conversion module, a memory, the function button, the micro-USB interface and a power module. A method for building a water inrush source distinguishing process system comprises the steps of automatically building a characteristic ion-based distinguishing process system for the water inrush source of the mine by analyzing a known water source category sample in the memory; detecting the water sample by an ion electrode; calculating to obtain actual ion concentration by use of the singlechip according to a Nernst equation; and rapidly distinguishing according to the water inrush source distinguishing process system. According to the device, the characteristic ion detection and the water inrush source distinguishing are integrated, the sample is automatically analyzed, and the distinguishing system is built; the device is high in distinguishing speed, high in accuracy rate and convenient to carry.
Owner:HUAINAN MINING IND GRP +1
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