172 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 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 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 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 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.

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.

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.

According to geological occurrence characteristics and relations of coal mine water disasters, rock burst and gas, a ground double-step horizontal well technology is adopted, multi-disaster collaborative treatment is achieved in space and time, the coal mine multi-disaster treatment cost is reduced, the comprehensive benefits of coal mining are improved, and the method is suitable for popularization and application. The safety of deep coal mining is improved, the bottom support guarantee of coal resources is enhanced, and the method is suitable for industrial large-scale use and popularization.

The application discloses a coal seam water inrush danger monitoring method and system based on repeated disturbance in an ecological fragile area, and relates to the technical field of mine water disaster prevention and control. The method comprises the following steps: comprehensively determining engineering geological conditions according to the vertical depth of the wind oxidation zone and the coal seam characteristic parameters; performing numerical simulation by using a numerical model; based on the positions of the fan lanes of the coal seam working faces in the mine field exploration line graph, determining the water prevention and isolation coal rock pillar setting under repeated disturbance of the coal seam working face near the ecological fragile area coal seam hidden outcrop by using the development heights of the two zones and the height inhibition coefficients of the wind oxidation zone two zones when the coal seam working faces are mined for different lengths, and monitoring the water inrush danger of the working face according to the roof failure characteristics of each working face in the regional roadway. The application can realize real-time and accurate water inrush danger monitoring of the working face near the coal seam hidden outcrop.

The invention discloses a coal roof water disaster early warning method and system, and the method comprises the steps: calculating a rock mass damage variable and a chemical corrosion rate according to micro-seismic monitoring data and underground water ion concentration data obtained in real time, and obtaining an instantaneous water yield coefficient; according to the stress data and the change rate of the rock mass damage variable, the mapping relation between the nonlinear seepage characteristics of the fracture network and the nonlinear degree of fracture expansion is calculated; on the basis of the Darcy law, the water yield coefficient is calculated according to the instantaneous water yield coefficient and the mapping relation; preliminarily screening a target early warning area in the coal roof according to the water yield coefficient; obtaining a multi-factor index of the target early warning area, calculating an early warning risk of the target early warning area, and generating an early warning signal according to the early warning risk; the multi-factor indexes comprise a channel index, a water source index and an intensity index. By adopting the embodiment of the invention, the dynamic evolution of the rock mass permeability along with time in the mining process can be fully considered so as to accurately carry out early warning on the water disaster of the coal roof.

1. Name of the product in this design: Integrated Water Conservancy Monitoring Station. 2. Application of this design: It is used for water surface monitoring and water hazard alarm. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses a geological anomalous body detection method and system in horizontal drilling well construction and a medium, and belongs to the technical field of mine water disaster prevention and control. Comprising the following steps: acquiring the minimum permeability, the maximum permeability and the average permeability of a stratum in a coal mine area, and a pressurized water diffusion radius; constructing a two-dimensional model of the geological section at the end hole, and carrying out iterative adjustment on the hole pressure of the end hole to enable the pressurized water diffusion radius at the end hole to meet the exploration requirement; three-dimensional models with different drilling lengths are constructed, and the tapping water pressure of the corresponding drilling length is inversely calculated based on the adjusted final hole pressure; under the condition of the maximum permeability, the maximum leakage amount of the corresponding drill hole length is obtained; in the horizontal drilling well construction process, the actual leakage amount is measured based on the opening water pressure of the corresponding drilling length; if the actual leakage amount exceeds the maximum leakage amount of the corresponding drill hole length, it is judged that a geological abnormal body exists; according to the method, the leakage amount data of whether the geological abnormal body exists in the stratums corresponding to different drilling length sections or not can be accurately given.

The water conducting fracture aperture calculation method and system based on the leakage amount relation of the present application firstly develops the simple phenomenon of drilling flushing fluid leakage into an effective means for quantitatively calculating the fracture aperture, and provides a more accurate geometric description of the water conducting fracture. Based on the mature particle migration and bridging plugging theory, the method is scientific. Field operation only needs to increase flushing fluid configuration and leakage observation on the basis of conventional drilling, and is easy to implement in coal mine field. Without expensive precision instruments or complex numerical simulation, the main materials are cement and standard sand, which greatly reduces the test cost and can quickly obtain the results. The method overcomes the shortcomings of low resolution of geophysical prospecting method, surface observation of borehole television and incapability of water injection test to correspond to specific aperture, and provides a new in-situ, direct and quantitative measurement approach, which is suitable for large-scale use and popularization in the field of mine water disaster prevention and water resource protection.

The application provides a coal mine water disaster early warning method under a roof sandstone aquifer, comprising the following steps: step one, obtaining parameters; step two, obtaining a first correlation between a disaster water source layer long observation hole and a main mining area of a mine: the first correlation includes a spatial position relationship, a disaster water source layer long observation hole 1h cumulative water level and a main mining area of a mine 1h cumulative water inflow; step three, obtaining a second correlation between a drainage pump house and the main mining area of the mine; step four, multi-index comprehensive early warning: taking the drainage capacity of the drainage pump house, the water inflow of the main mining area of the mine and the water level of the disaster water source layer long observation hole as three key indexes, comprehensive early warning is carried out. The method realizes the correlation between the long observation hole water level, the main mining area of the mine and the drainage pump capacity through the spatial position, realizes the upstream prevention and control of water disaster monitoring and early warning, dynamically compares the water inflow points and drainage points of the whole mine, and finally realizes the intelligent grading early warning of the coal mine water disaster under the roof sandstone aquifer.

The utility model relates to the technical field of water level measurement, and discloses a precipitation observation device. The precipitation observation device comprises a rain collecting tank, a water storage tank and a water outlet pipe, wherein a water accumulation cavity is formed in the rain collecting tank; the measuring piece is movably installed in the water accumulation cavity, and a height indication mark is arranged on the peripheral wall of the measuring piece; the positioning assembly is arranged on the peripheral side of the measuring piece in a sleeving mode and fixedly connected with the inner circumferential wall of the rainwater collecting tank, the positioning assembly is provided with a current identification face, the current identification face is used for determining the current relative height position between the measuring piece and the rainwater collecting tank, and the initial identification assembly is provided with an initial identification face. And the initial identification surface is used for determining an initial relative height position between the measuring piece and the rainwater collecting tank. Therefore, the precipitation amount of the mine area within the preset time is observed by using the precipitation amount observation device so as to analyze the correlation between the water inflow of the mine and the precipitation amount, and the calculation error during analysis can be reduced, so that water damage in the mine can be effectively prevented.

The invention discloses a coal mine continuous mining water inflow dynamic prediction method based on an attenuation coefficient, and belongs to the field of coal mining water disaster prevention and control. The method comprises the following steps: collecting water inflow monitoring data after stoping of a first mining working face is completed; determining a goaf water inflow attenuation coefficient based on the water inflow monitoring data; hydrogeological parameters of a plurality of to-be-predicted working faces are obtained, and based on the hydrogeological parameters, the predicted normal goaf water inflow of each to-be-predicted working face is calculated through a catchment gallery method; and on the basis of the goaf water inflow attenuation coefficient and the coal mine continuous mining plan, weighted summation is carried out on the goaf predicted normal water inflow of the multiple to-be-predicted working faces, and an overall normal water inflow prediction result of the goaf formed by coal mine continuous mining is obtained.