206 results about "WATER HAZARDS" patented technology

The invention provides a mine water disaster monitoring and early warning method and system based on multi-source heterogeneous data fusion, and the method comprises the steps: collecting multi-source data of a mining area, carrying out the time-space alignment of the multi-source data, and generating a data set, the multi-source data comprising remote sensing data; preprocessing the data, inputting the preprocessed data into a multi-modal fusion network, and extracting surface water body distribution, lithologic permeability, underground water level and structural fracture characteristics to obtain a three-dimensional hydrogeological static model; the hydrological numerical model based on physical driving is coupled with the static model, and the dynamic model is used for simulating the dynamic change of an underground water flow field and a pollutant diffusion path; based on the dynamic model updated in real time, multi-target collaborative evaluation is carried out to evaluate the mining area water resource, ecological and social collaborative effect; and calling an unmanned aerial vehicle to inspect a leakage position or a settlement position in the hydrogeological risk map based on a multi-target collaborative evaluation result. According to the method, the prediction accuracy is improved through the multi-source data.

The invention relates to the technical field of coal mine safety, in particular to a coal mine water disaster prediction system based on a data analysis and machine learning technology, which comprises a multi-source data acquisition module, a dynamic data preprocessing module, a multi-modal feature engineering module, an integrated prediction model construction module and a prediction optimization control module, the multi-source data acquisition module fuses geological and hydrological data, micro-seismic data and equipment working condition data, the dynamic data preprocessing module constructs a noise feature library and realizes noise elimination and data standardization, and the multi-modal feature engineering module extracts dynamic causal feature vectors of a water diversion coefficient change rate and a micro-seismic energy release rate based on convergence cross mapping; the integrated prediction model construction module fuses and outputs a water disaster risk probability value through a meta-learner; and the prediction optimization control module triggers a sampling rate adjustment and disaster response linkage mechanism according to the risk probability value. The method has the advantages of high reliability, high adaptability and timely response, and is suitable for real-time prediction of water disasters in a complex coal mine environment.

The present invention relates to the technical field of coal mining, in particular to a method for constructing an artificial water guide channel through drainage boreholes in a roof aquifer by means of pulse fracturing. The method involves arranging drainage boreholes and using pulse fracturing to pre-form an artificial water guide channel in a sandstone fracture aquifer through the arranged drainage boreholes, thereby improving the permeability of dense and intact sandstone rock masses; the artificial water guide channel formed by the drainage boreholes in the sandstone fracture aquifer connects discontinuous water-bearing areas and water-rich areas, such that roof sandstone fracture water‌ is guided to the drainage boreholes through the artificial water guide channel, thereby achieving effective drainage of the boreholes and expanding the drainage radiation range of a single borehole. The present invention not only avoids arranging excessive drainage boreholes and remarkably improves the drainage efficiency of exploratory drainage holes, but also achieves an advanced drainage function in a stoping process. By means of the method, mine water disasters can be effectively controlled even under unfordable geological conditions, thereby guaranteeing safe production at mines.

The invention relates to the technical field of tunnel engineering safety prevention and control, and provides a gypsum rock tunnel water disaster risk evaluation and prevention and control scheme selection method which comprises the following steps: step 1-3, based on parameters such as rock mass structural integrity, stratum karst development degree, water yield property, groundwater corrosivity, gypsum rock mineral composition, expansibility and corrosion property, establishing a grading evaluation system, dividing corresponding grades and determining influence indexes R1-R8; 4, adopting an AHP method, an entropy weight method and a CRITIC method to perform multi-dimensional weight calculation on the subjectivity, objectivity and conflict influence indexes, correcting abnormal weights in combination with expert experience and verification rules, generating a comprehensive score, dividing risk grades, and matching graded prevention and control measures; and 5, optimizing and adjusting prevention and control measures in real time through a parameter risk level dynamic judgment and construction method matching mechanism. According to the method, multi-source parameter dynamic empowerment can be fused, and a full-life-cycle prevention and control method with accuracy, timeliness and self-adaptability is provided for tunnel engineering.

The invention provides a coal mine roof sandstone water long directional hole and short straight hole combined drainage prevention and control method, and belongs to the technical field of coal mine water disaster prevention and control. The method comprises the following steps: finely exploring geological and hydrogeological conditions, obtaining hydrogeological characteristics of an aquifer, and calculating static reserves and dynamic replenishment; designing and constructing a long directional hole, and determining a track parameter and a drainage amount; short straight holes are designed and constructed, a low-resistance abnormal area is arranged in a densified mode, and the drainage amount and the drawdown are calculated; constructing a multi-objective optimization model, and determining an optimal drilling position combination; partition drainage control is conducted based on the optimization scheme, the drainage speed and flow are dynamically adjusted, and grouting plugging is conducted on the waterless drill hole; the water inflow is monitored, and the drainage effect is judged according to the attenuation rate. Safe and efficient drainage of roof sandstone water is achieved, the mine water disaster risk is effectively reduced, and safe production of a coal mine is guaranteed.

The invention relates to the technical field of coal mine safety monitoring, and particularly provides a coal mine water disaster source intelligent identification system fused with a multi-source sensor. The system adopts a hierarchical architecture with edge intelligence and center decision collaboration, comprises an edge sensing and computing node, a region fusion decision node and a ground intelligent analysis center, and realizes real-time identification and early warning of water disaster risks through local feature extraction, multi-source information fusion and global situation research and judgment. According to the invention, the network load is reduced, and the autonomous emergency capability and the overall reliability of the system during communication interruption are improved.

The invention belongs to the technical field of coal mine green mining and disaster prevention and control, and particularly relates to a caving area gangue grouting and filling method for recycling underground coal mine water resources. And zero emission and efficient cyclic utilization of water resources are realized. The coal gangue is used as a main filling aggregate and is directly digested underground, so that the problems of land occupation and environmental pollution caused by ground stockpiling are avoided, and harmless and large-scale treatment of the coal gangue is realized. A water treatment system and a gangue treatment system are combined into a whole, the comprehensive operation cost of a mine in the aspects of water disaster prevention and control, gangue treatment and outsourcing of a water source is remarkably reduced through a cyclic operation mode, and the cost benefit is high. Accurate detection and effect verification of the previous and later ponding areas are carried out through a geophysical prospecting means, and measures such as directional drilling and safety monitoring are combined, so that controllability and safety of the whole operation process are ensured, and the safety and reliability are high.

The invention discloses a multi-dimensional comprehensive evaluation method for permeability resistance of overlying strata of a working face, and belongs to the technical field of mine engineering and geological safety evaluation. 12 types of core factors such as rock strength, rock core quality, physical and mechanical properties of rock mass, hydrological properties and mining influence characteristics are integrated; a full-process evaluation framework of data acquisition, index system construction, weight distribution, comprehensive modeling and verification optimization is constructed, an analytic hierarchy process and an entropy evaluation method are coupled to determine index weights, a dynamic evaluation model is constructed in combination with a fuzzy mathematics theory, and accurate classification and risk early warning of the permeability resistance of the overlying strata are realized. According to the method, through comprehensive analysis of a plurality of factors, the accuracy of overlying strata permeability resistance evaluation can be improved, so that the underground water permeation path and the permeation amount are predicted more accurately, the uncertainty is reduced, the comprehensiveness and the accuracy of evaluation are remarkably improved, and a scientific basis can be provided for mine water disaster prevention and control and safe mining.

The invention provides a coal mine underground goaf water disaster prevention and control and monitoring early warning method, and relates to the technical field of water disaster prevention and control and intelligent monitoring in coal mine engineering. The method comprises the steps that physical parameters, used for reflecting the water disaster evolution process, of a goaf monitoring area are obtained; constructing a three-dimensional hydrological and mechanical coupling inversion model of the goaf; the physical parameters are input into a three-dimensional hydrological and mechanical coupling inversion model, and the water pressure change rate, the seepage flux change rate and the fracture expansion rate, output by the three-dimensional hydrological and mechanical coupling inversion model, of the goaf are obtained; calculating a water disaster disturbance risk value of the goaf according to the water pressure change rate, the seepage flux change rate, the fracture expansion rate and a preset water disaster disturbance risk function; and according to the water disaster disturbance risk value and a preset risk level division threshold, determining a risk level of the water disaster disturbance risk value and calling an early warning strategy corresponding to the risk level. According to the technical scheme disclosed by the invention, the water disaster prediction and early warning capability is improved.

The invention discloses a construction method for draining underground goaf water through ground directional drilling, and relates to the technical field of coal mining. The method comprises the following steps: determining a shallow goaf water target area 1; determining a deep water discharge target area 2; directional drilling construction is conducted; establishing a dynamic monitoring and early warning system; and carrying out cooperative treatment on roadway tunneling. According to the method, an upper goaf and a lower goaf are communicated through a directional drilling technology, gob water in the upper goaf is drained into the lower goaf through a drilling channel, and the gob water is drained in advance according to plans and steps by comprehensively applying various technical means such as ground directional drilling, casing pipe underneath arrangement, goaf penetrating and water level monitoring. Compared with a traditional treatment method, the method not only can effectively avoid safety risks such as water burst out-of-control and abnormal gas emission, but also can avoid resource waste caused by the fact that coal resources cannot be recovered.

The invention discloses a control roof drainage method for multiple coal faces in a monocline structure area, which combines the characteristic that the water level of a monocline structure is gradually increased along with the burial depth, and adopts a layered and graded control drainage strategy by utilizing the burial depth difference of the working faces, and comprises the following steps of: firstly, controlling the drainage water level at a preset water head threshold value; ensuring that the water level is lower than the elevation of the bottom plate of the first mined shallow working surface, and meeting the safe mining condition of the shallow working surface; and after mining of the shallow working face is completed, the drainage amount of the drill hole is gradually increased, the drainage level is reduced, the mining requirement of the next deep working face is met, and sequential mining of multiple working faces from shallow to deep is achieved in the same manner. According to the method, the drainage drill holes are formed in the low-position roadway at a time, roof water disaster prevention and control of all the working faces are achieved in order in a controlled drainage mode, the dynamic water inflow of the working faces can be reduced, and remarkable economic, safe and environmental benefits are achieved.

The invention discloses a surface water-underground water-mine water coupling simulation scheduling method and system, and the method comprises the steps: obtaining a drainage basin around a target mine in a research region, and screening a reference point closest to the target mine; calculating a water quality fluctuation coefficient of a drainage basin where a reference point closest to the target mine is located on the influence drainage basin; calculating the influence weight of the influence basin on the target mine; and constructing a water balance equation of each influence drainage basin and an underground water control equation associated with the target mine water and the underground water, taking the amount of water permeating into the underground water in the influence drainage basin as an underground water source convergence item, simulating the change state of the mine water, and planning the water amount which can be scheduled at the current simulation scheduling moment of the target mine. The system comprises a water quality sensor, a water level sensor, a data acquisition module and data processing equipment. The method is suitable for dynamic optimization management of mining areas and surrounding complex water resource systems, and is especially suitable for water resource safety scheduling and water disaster prevention and control of mining areas with large water inflow.

The invention provides a coal mine water disaster water inrush early warning grading method, and relates to the technical field of coal mine safety engineering and intelligent monitoring, and the method comprises the steps: collecting the multi-source basic data of a coal mine area in real time; constructing a first-level index-second-level index layered influence factor set based on a water source condition, a water guide channel and a dynamic factor of coal mine water disaster water inrush, and introducing an index dynamic correlation coefficient; defining an early warning grade-symbol-judgment standard-emergency response four-dimensional judgment set of the coal mine water disaster; respectively calculating the membership degree for the measured value of each secondary index in the multi-source basic data, and constructing a fuzzy relation matrix; dynamically calculating the real-time weight of each level of index according to the mining process and the index dynamic correlation coefficient; and based on the real-time weight and the fuzzy relation matrix, calculating and obtaining a corresponding early warning grade and an emergency response in the four-dimensional evaluation set. According to the method, full-period water inrush risk grading early warning of bottom plate limestone water, top plate sandstone water, goaf water and composite water disasters under complex geological conditions can be achieved.

The invention relates to the technical field of mine disaster prevention and control, in particular to a fault water disaster sensing and danger relieving operation method and system, and the method comprises the steps: setting a monitoring region, carrying out the three-dimensional space grid segmentation, calculating the coupling coefficient of data in each grid, setting a multi-level risk threshold value, and carrying out the risk level judgment of the coupling coefficient of each grid; based on the determined grid risk level, constructing a knowledge reasoning mode, an acoustic alarm mode and a three-dimensional visual mode, performing weighted fusion on a normalization result according to a preset reliability weight to obtain a final risk value, comparing the final risk value with a preset early warning threshold, and triggering early warning of a corresponding level; based on the judged grids of the corresponding levels of early warning, the grids of high-risk early warning are judged, and the drilling verification and grouting plugging danger relieving process is started; the technical problem of poor intelligent cooperation of mine disaster multi-source data cooperative sensing, early warning and danger solving is solved.

The invention relates to the technical field of coal mining, and provides a Jurassic coal mining overlying strata separation layer water disaster prevention and control method which comprises the following steps: S1) acquiring and analyzing geological and hydrological conditions of a stoping mining area, and determining whether a separation layer exists on a top plate of overlying strata or not; s2) if it is determined that there is a separation layer, obtaining separation layer parameters, and determining a separation layer type and a separation layer water disaster type according to the separation layer parameters; s3) if the separation layer type is determined to be a disaster type, cutting off the aquifer of the top plate or cutting off a water channel flowing to the separation layer through the surrounding rock strong runoff fault zone; s4) guiding and discharging accumulated water in the separation layer through the upper flow guide hole and / or the lower flow guide hole; according to the prevention and control method, the hidden danger of separation water storage can be found as soon as possible, then the measures of cutting off a water source and guiding and draining water storage are adopted to reduce the separation water disaster in the germination stage, and the problem that in the prior art, a separation water disaster prevention and control system is lacked is solved.

The invention discloses a quick plugging method for coal mine floor drill hole water inrush, and belongs to the technical field of coal mine water disaster prevention and control. According to the method, the mode of combining long holes and short holes is adopted, the high-pressure grouting technology is adopted, the plugging material specially prepared according to the water inrush condition is prepared, and rapid and accurate plugging of the water inrush point is achieved; comprising the following steps: 1, drilling and positioning; 2, detecting a water inrush point; 3, preparing a plugging material; fourthly, high-pressure grouting is conducted; and 5, monitoring and evaluating the plugging effect. The method mainly aims at eliminating water leakage points of the bottom plate and blocking ordovician limestone hole gushing water, firstly, the short hole is adopted for blocking and treating the area, with the large water leakage amount, of the bottom plate, then the long hole is adopted for conducting full-hole blocking on the ordovician limestone drainage hole, and bottom plate gushing water is treated in a staged and step-by-step mode.

The invention aims to provide a coal mine water inrush body deep ex-situ dredging and restoring method and system, and belongs to the technical field of coal mine water disaster prevention and control. The system comprises a water inrush body recognition module, a drainage depressurization system, a closed pipeline collection system, a storage stratum screening and well design module, a high-pressure storage ectopic dredging system and a safety monitoring system. According to the method, the water inrush body is identified by finely evaluating the hydrogeological conditions, the optimal hydrogeological parameters are obtained by using the parameter inversion model and the particle swarm optimization, and drainage and pressure reduction are guided; a reservoir capacity grade dynamic evaluation system is established, a deep suitable stratum is screened, collected mine water is stored back to the deep part by using high-pressure equipment, and full-period safety monitoring is performed in combination with a multi-source data fusion early warning model. The strategic reserve of the mine water depth is achieved, the underground water ecology is effectively maintained, and the treatment cost and the safety risk are remarkably reduced.

The invention belongs to the technical field of mining engineering, and discloses a top plate water transportation rule early warning method and system based on a clustering algorithm. The method comprises the steps of collecting monitoring data and performing data preprocessing; analyzing the correlation and potential relationship among the monitoring data, determining a clustering number K, and determining an optimal clustering number K by using methods such as an elbow rule and a contour coefficient; carrying out clustering by using a K-means algorithm, and carrying out deep analysis on an obtained clustering result; result analysis and water disaster risk early warning are carried out. The method disclosed by the invention reveals the inherent rules and characteristics of underground water migration, provides technical support for the migration of roof water and early warning decision-making of water disasters, can effectively avoid the occurrence of water inrush accidents, and guarantees the life safety of underground operating personnel.

The utility model provides a ground drilling, grouting and water plugging device suitable for a metal mine, and relates to the technical field of mine water disaster prevention and control, the ground drilling, grouting and water plugging device comprises a petroleum casing pipe, a grouting drill rod, a rubber umbrella cover, a first grouting device and a second grouting device, the grouting drill rod is arranged in the petroleum casing pipe; the rubber umbrella cover is arranged between the oil casing and the grouting drill rod, the grouting drill rod is sleeved with the rubber umbrella cover, and the arrangement height of the rubber umbrella cover is lower than the top end of the oil casing; the first grouting device is fixedly connected with the grouting drill rod through a pressure-resistant steel pipe; the second grouting device is fixedly arranged on the oil casing pipe, and the connecting position of the second grouting device and the oil casing pipe is lower than the bottom end of the rubber umbrella cover. External incoming water of a broken zone of a mining area can be blocked, the water inrush influence of excavation and construction is reduced, the grouting efficiency is improved, the slurry loss is reduced, and the service life of the mining area is prolonged. Therefore, excavation safety is guaranteed, and construction cost is reduced.

The present application provides a method, device, electronic device and storage medium for simultaneous control of water hazards and subsidence, the method comprising: exploring the rock strata between the coal seam and the surface to determine basic data of the rock strata; wherein the rock strata include key strata; in response to the basic data satisfying set conditions, multiple monitoring holes are set on the surface based on the drilling position; wherein the bottoms of the multiple monitoring holes are located on the side of the key stratum in the rock stratum away from the surface; in response to mining the coal seam, monitoring the water injection pressure of at least one monitoring hole within a set range at set intervals; wherein the set range is determined according to the mining position of the coal seam; in response to the pressure change of the water injection pressure monitoring at any monitoring hole satisfying a first requirement, grouting is performed on any monitoring hole until the grouting pressure of any monitoring hole reaches a second requirement.

The invention relates to the technical field of mine safety, in particular to a metal mine old goaf water disaster up-down combined detection method based on a steeply inclined ore body, and the method comprises the following specific steps: 1, analyzing the existing data of a mine, and determining a detection region; step 2, analyzing geophysical response characteristics and verifying whether the geophysical response characteristics meet detection standards, and if yes, entering step 3; 3, three-dimensionally arranging measuring lines and measuring points above and below the well; 4, multi-source data acquisition and quality control are carried out; 5, preprocessing the data; and 6, joint inversion is carried out. According to the method, through combined detection of the surface high-density electrical method and the underground transient electromagnetic method, multi-source data fusion and geological constraint inversion are combined, the defects of a single geophysical method in depth resolution, anti-jamming capability and spatial positioning precision are overcome, the problem that the old goaf boundary and the water yield property of the steeply inclined ore body are unknown is effectively solved, and the method has the advantages of being simple in structure and convenient to operate. And high-precision positioning of the goaf and the water-rich area is realized.

This invention discloses a grouting and sealing device for fault water hazard prevention, relating to the field of underground grouting and sealing technology in coal mines. It includes a grouting component body with a feed pipe fixedly installed on its inner surface. The grouting component body is equipped with at least two sealing mechanisms. Through the arrangement of these sealing mechanisms, when encountering a gourd-shaped borehole, the segmented arrangement of the first and second expansion capsules allows the external air supply end to inflate the first expansion capsule. With the cooperation of the connecting and limiting components, the first and second expansion capsules are positioned in the larger and smaller diameter areas of the gourd shape, respectively. This allows the first and second expansion capsules to expand to appropriate sizes after expansion, respectively, to cooperate with different areas during sealing. This avoids poor contact with the gourd-shaped borehole wall during sealing, increases the sealing contact area with the borehole wall, and ensures the sealing effect during grouting and sealing.

The invention belongs to the crossing field of the field of mine water disaster prevention and control and the field of mining engineering, and particularly discloses an underground high-pressure-bearing weak water-rich aquifer grouting method which comprises the following steps: implementing associated drilling; a main grouting hole is formed; forming a water distributing and discharging hole; water pressure monitoring devices and ball valves capable of adjusting the water discharge amount are arranged at orifices of the branch water discharge holes and the main grouting holes; a high-pressure blowout preventer and a closed drainage system are mounted at the opening of the water distribution and drainage hole; a high-pressure grouting system is connected to the opening of the main grouting hole; main grouting holes are formed in the high-pressure-bearing weak water-rich aquifer; opening a water distributing and discharging hole ball valve to discharge water, and continuously monitoring the water pressure; grouting and hole sealing are conducted on the associated drill holes; opening a main grouting hole orifice ball valve, and starting a high-pressure grouting system. The grouting method for the underground high-pressure-bearing weak water-rich aquifer is more scientific, accurate, practical and easy to implement, and can meet the urgent requirements of mine safety production and geological disaster prevention and control.

The invention discloses a process and effect evaluation method for a top section of a modified Ordovician limestone confined aquifer, and the method comprises the steps: analyzing, studying and judging the hydrogeological conditions of a mine, analyzing the water disaster factors of a treatment range or region, and calculating a water inrush coefficient, so as to facilitate the arrangement of a scheme; a water-bearing layer of the project is thoroughly modified into a water-resisting layer, so that the laneway project located at the layer is in a water-free state; a full-coverage three-dimensional arrangement mode that multiple layers of horizontal holes and top-lifting layer-penetrating holes are combined is adopted, an upper layer and a lower layer are staggered and distributed in a plum blossom shape, drilled holes are formed in multiple layers in a three-dimensional mode, and multiple layers of bedding horizontal holes and layer-penetrating inclined holes are formed in a combined mode. The technical method and route for modifying the top layer of the high-pressure-bearing Ordovician aquifer into the water-resisting layer through full-space complete grouting are achieved, the production technical problem is solved, and the domestic technical blank is filled up.

A method for constructing an artificial water-conducting channel through pulse hydraulic fracturing of drainage boreholes in a roof aquifer includes constructing an artificial water-conducting channel in a sandstone fissure aquifer through arrangement of drainage boreholes and pulse hydraulic fracturing, which improves the permeability of dense and intact sandstone rock masses. The artificial water-conducting channel formed through arrangement of drainage boreholes is connected to discontinuous water-bearing areas and water-rich areas, and water from roof sandstone fissures is diverted to the drainage boreholes through the artificial water-conducting channel, thereby achieving effective drainage of the boreholes and expanding a radiation range of single-borehole drainage. The method not only avoids the arrangement of excessive drainage boreholes and significantly improves the drainage efficiency of prospecting and drainage boreholes, but also facilitates advance drainage during the mining process. The method enables effective control of mine water hazards, thereby ensuring safe production of the mine.

The invention belongs to the technical field of raw coal bins, and particularly relates to a raw coal bin unblocking device for a high-water-disaster mine, which comprises a bin body, an electric heating mechanism is arranged on the outer surface of the bin body, and a water film scraping mechanism is arranged in an inner cavity of the bin body. The technical means that the bin body is matched with the water film scraping mechanism is adopted, a water retaining thin plate is conveniently driven to rotate synchronously through rotation of an arc-shaped scraping plate, a water film stripped by the arc-shaped scraping plate can be intercepted through the water retaining thin plate, and meanwhile the water film is guided to flow towards an arc-shaped water scraping strip; the water film guided to the arc-shaped water scraping strip can enter a liquid temporary storage tank of a containing box through the guiding effect of a water inlet tank, so that the water film on the inner wall of the bin body is conveniently collected in the arch breaking process, and blockage of raw coal in an inner cavity of the bin body is reduced by scraping the water film; and an annular electric heating pipe is matched to balance the temperature difference inside and outside the bin body, so that the blockage of raw coal in the inner cavity of the bin body is further reduced.

This application provides a water pressure test method and system for evaluating grouting effectiveness, relating to the field of mine water hazard prevention technology, to solve the problem of difficulty in effectively identifying weak areas in grouting. The water pressure test method for evaluating grouting effectiveness includes dividing the grouting hole into multiple isolated independent test sections; conducting a water pressure loading test on each independent test section; conducting a pressure recovery test on each independent test section; calculating segmented hydraulic parameters; obtaining grouting sealing evaluation indicators based on the segmented hydraulic parameters; and identifying weak grouting sealing areas based on the grouting sealing evaluation indicators. This method can more accurately identify weak grouting areas.

The invention discloses a sediment-carrying water inrush material source layer identification method based on sedimentary environment attributes, and belongs to the technical field of coal mine water disaster prevention and control. The method comprises the following steps: firstly, collecting drilling core and logging data of an overlying stratum of a target coal seam, and extracting and quantifying sedimentary environment attributes such as a hydrodynamic condition, an oxidation-reduction environment and stratum sedimentary characteristics from the drilling core and logging data; the sedimentary microfacies are divided based on the attributes, and a corresponding relation model of sedimentary microfacies types and the bonding strength (weak, medium and strong) of the material source layer is established. And then, constructing a mining area sedimentary microfacies spatial distribution model, mapping the bonding strength relationship in the model, generating bonding strength three-dimensional distribution characteristics, and delineating different strength areas. And finally, comprehensively judging the silt and water inrush risk area in combination with the cementing strength distribution, the coal seam spacing and the development position of the water flowing fissure zone. According to the method, accurate and three-dimensional space identification of the erodible material source layer is realized from the deposition cause, and a scientific basis is provided for targeted prevention and treatment.

The invention relates to the technical field of computer science and technology, and discloses a karst metal underground mine hidden disaster-caused water disaster risk evaluation method comprising the following steps: constructing a three-level evaluation index system of a karst metal underground mine comprising a target layer, a criterion layer and an index layer; analyzing the expert analysis risk level of the second-level index; correcting expert analysis risk levels to obtain membership degrees of the second-level indexes relative to different risk levels so as to construct a fuzzy relation matrix of the karst metal underground mine; calculating a first-level index weight of a first-level index corresponding to the criterion layer and a second-level index weight of a second-level index corresponding to the criterion layer, and performing fuzzy synthesis operation on the fuzzy relation matrix and the second-level index weight to obtain a first index risk probability of the first-level index; and performing fuzzy synthesis operation on the first index risk probability and the first-level index weight to obtain a comprehensive risk level corresponding to the target layer. According to the invention, the monitoring accuracy of major safety accidents caused by hidden water disasters can be improved.

The invention discloses a coal mine goaf water disaster treatment method, which comprises the following steps: S1, acquiring the water accumulation amount and geological condition data of a goaf water accumulation area above a to-be-mined working face; s2, determining drilling construction parameters and filling construction parameters based on the water accumulation amount and geological condition data of the goaf water accumulation area; s3, drilling operation is conducted in the roadway according to the determined drilling construction parameters, and accumulated water in the gob accumulated water area is drained through the drill holes to form an emptying area; s4, when the water level of the accumulated water in the goaf drops to a preset position, roadway mining and tunneling operation is started, and when the roadway is constructed to the position of the next goaf accumulated water area, the steps S1 to S3 are repeated; and S5, according to the filling construction parameters, a water fixing medium is selected, and the emptying area is filled with the water fixing medium so that the water fixing medium can be solidified in the emptying area to reduce accumulated water in the emptying area. The coal mine gob water disaster treatment method has the advantages of being reasonable in arrangement, small in potential safety hazard, low in prevention and treatment cost and the like.