398 results about "Aquifer" patented technology

An early warning method for debris flow disaster in a small watershed, and a disaster reduction method for debris flows in a small watershed is disclosed. An early warning method for debris flow disaster in a small watershed is provided, in which parameters of a hydrological model are calibrated by rainfall, evaporation and runoff data of the watershed based on water balance of the watershed, and an early monitoring and warning scheme for debris flows, which takes water storage in the watershed as a core monitoring and evaluation indicator, is established. The GR4J hydrological model is improved by taking into account a watershed area, specific yield of an aquifer and several geological parameters, as well as an evapotranspiration effect of vegetation. A disaster reduction method by means of regulation of a drainage channel can provide a basis for mathematical model simulation studies of disaster reduction in small watersheds.

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 discloses a coal mining water retention method, which comprises the following steps of: pre-calculating the height h0 of a water flowing fissure zone in a deep aquifer when the water yield Q2 of a coal mining mine is equal to the total water consumption Q1 of production and life of a mining area, and then calculating the corresponding mining height M0 when a coal seam below is mined according to the height h0 of the water flowing fissure zone; according to the mining height M0, the filling height M2 needing to be equivalently filled in the goaf is calculated, and materials are filled into the goaf behind along with advancing of the coal face during coal mining until the materials reach the height of M2, so that too high or too low development of the water flowing fissure zone can be inhibited, the filling height or thickness can be reduced, and the filling efficiency is improved. According to the method, the balance between the filling height of the goaf and the development height of the water flowing fractured zone is found in an equivalent filling mode, mine water generated during coal mining can meet the total water consumption of production and life of a mining area, the defects caused by complete filling can be avoided, the coal mining efficiency is improved, and the water retention effect is also improved.

The invention provides a stratigraphic structure and ground pressure distribution detection method based on wave velocity tomography, and relates to the technical field of wave velocity tomography. The method comprises the following steps: firstly, arranging dense linear detector arrays in a monitoring area at an interval of 5m, and collecting the distribution condition of an aquifer, a lithology detection result and a drill core diagram of the monitoring area; recording seismic wave data, carrying out noise reduction processing on the seismic wave data, picking up arrival time, and associating the arrival time with a waveform event; performing path tracking on an observation result by adopting a wave velocity inversion algorithm, generating a wave velocity tomography image and substituting the wave velocity tomography image into the wave velocity-ground pressure evaluation model; and finally generating a ground pressure distribution diagram.

The invention provides a comprehensive advanced geological forecasting method for an ultra-deep vertical shaft of a metal mine, and belongs to the technical field of water prevention and control in construction of the ultra-deep vertical shaft of the metal mine. The conditions that a tectonic fracture zone, a high confined aquifer and the like possibly exist in the deep stratum, have construction hidden dangers and are prone to causing water burst disasters are accurately recognized, and the advanced detection precision of the deep stratum of the shaft is improved; meanwhile, a feedback forecasting process of geological analysis-geological modeling-geophysical prospecting circle target-drilling verification is formed, a multi-level verification system is constructed, the specific geological condition of an abnormal area is clearly detected, and the advanced positioning and judgment accuracy of a geological abnormal body in a deep stratum is remarkably improved; and by integrating and fusing multi-source geological information, the geological abnormal body information is comprehensively analyzed and judged, so that the requirements of deep rock mass mechanical property analysis and water inrush disaster prevention and control are met.

The invention provides a digital twinning-based hillock aquifer well group collaborative precipitation simulation method and system, and relates to the technical field of digital twinning, and the method comprises the steps: constructing an aquifer digital twinning model, carrying out virtual precipitation deduction, obtaining a water level spatio-temporal evolution field, and recognizing a hydraulic coupling region. And according to the water level gradient distribution and the flow field deflection direction, the well group water pumping intensity is cooperatively regulated and controlled, and the optimal water pumping scheme is determined. The well group dewatering efficiency can be effectively improved, the overall water level of the aquifer is evenly lowered, and the engineering cost is reduced.

The invention relates to the technical field of geological modeling, and discloses an underground reservoir three-dimensional geological model construction method and system. The method comprises the following steps: screening drilling data through a preset precision threshold value, correcting topographic data by using a first precision drilling data set to generate a topographic surface model, reversely calibrating a second precision drilling hole, and establishing a multivariate data fusion mechanism; layering standardization is achieved in combination with sedimentary cycle characteristics, aquifer units are automatically divided, and stratum lithology codes are compiled; a three-dimensional model is generated by adopting an implicit modeling method based on modeling boundary constraints, and the model precision is verified through a profile comparison method and a leave-one-out method; and converting the adjusted geological section into a three-dimensional constraint surface to drive the generation of a virtual drill hole so as to realize incremental updating of the three-dimensional geological model. According to the method, the spatial precision of the terrain surface model is remarkably improved, the problem of non-uniform reference of multivariate heterogeneous data is solved, the reliability and accuracy of model construction are improved, the virtual drilling data set is generated, the data are dynamically modeled, and the dynamic updating of the model is realized.

The invention belongs to the field of pollution traceability, and particularly relates to a karst landform soil and groundwater collaborative heavy metal pollution traceability method, which comprises the steps of end member site selection, groundwater monitoring point arrangement, collection and measurement of feature identification of each end member and multi-end member hybrid modeling. According to the scheme, the number of karst funnels is counted through neural network segmentation, high, medium and low density areas are divided, intelligent partition extraction of end members is achieved through a random forest model, monitoring points are arranged in the flow direction in a layered mode in combination with funnel distribution and an aquifer structure, and the problems that the pollution diffusion rule is difficult to capture and pollution source positioning is fuzzy under heterogeneity are solved; a three-dimensional monitoring network of soil, water quality and geology is constructed, a Bayesian mixture model is combined with an isotope fractionation effect to quantify an end member contribution proportion, the defect that traditional monitoring and modeling are not adaptive to karst heterogeneity is compensated, and pollution spatial and temporal distribution and migration paths are captured; unification of accurate simulation of the pollution diffusion rule and quantification of the end member contribution proportion is realized.

The invention discloses a closed pit mine water pollution four-water conjugate cooperative monitoring and early warning method and system, and relates to the technical field of water quality analysis, and the method comprises the following steps: collecting water level and water quality data of corresponding positions of atmospheric precipitation, surface water, underground water aquifer and goaf ponding; performing format standardization, exception elimination, deletion processing and space-time alignment on the monitoring data, and constructing a four-water monitoring space-time data set; a four-water conjugate coupling analysis and prediction model is established, after training is completed based on historical monitoring data, the water level and water quality of each monitoring point are predicted, and pollution transmission paths and pollution lag characteristics among four types of water bodies are identified; and performing over-threshold judgment by combining the monitoring index and the early warning threshold, and outputting graded early warning and intervention regulation and control suggestions. According to the technical scheme of the invention, four-water integrated dynamic monitoring, pollution evolution rule identification and prospective early warning of the closed pit mine are realized, and the water pollution risk management and control precision and response efficiency are improved.

The invention relates to the technical field of coal mines, in particular to an underground high-confined aquifer area treatment method which comprises the following steps: S1, performing underground directional drilling treatment, layering a high-confined aquifer according to the thickness and rich water distribution characteristics of the high-confined aquifer, and constructing a plurality of main directional drill holes in a directional drill site, then a plurality of branch directional drill holes extend from the same layer or different layers of each main directional drill hole to the plane direction of the treatment area from the directional drill site, and a grouting channel is formed; s2, grouting is conducted on the directional drill hole; and S3, underground common drill verification is carried out, and the treatment effect is checked through common drill holes which are arranged in parallel at equal intervals. Compared with a common drilling treatment working face, average construction drilling holes are greatly reduced, casing pipes and cement materials can be saved, the moving frequency and construction time of a drilling machine are reduced, and manpower and material resources are reduced.

The invention discloses an underground water flow field simulation method, an underground water flow field simulation device, underground water flow field simulation equipment and a computer readable storage medium, and the method comprises the steps: carrying out the collection of multi-source geological data based on drilling basic information, a digital elevation model and a hydrogeological map, and obtaining the multi-source geological data; constructing a three-dimensional geological model based on the multi-source geological data to obtain a three-dimensional geological entity model; performing aquifer recognition based on the profile information of the three-dimensional geological entity model to obtain aquifer spatial distribution; performing groundwater flow field analysis based on the aquifer spatial distribution to obtain groundwater flow field data; and performing model construction based on the groundwater flow field data to obtain a groundwater flow field model. The integrated simulation method for fine description of stratums, automatic identification of aquifers, flow field feature analysis and comprehensive evaluation of thermal reservoirs is realized, so that the precision and efficiency of geothermal resource exploration evaluation are improved.

The invention relates to the technical field of unsealing of bad drill holes caused by hidden disasters of mines, and discloses a sealing and grouting device and method for sealing a confined aquifer of a bad drill hole, the sealing and grouting device comprises an inner barrel, the outer part of the inner barrel is sleeved with a left-hand thread sleeve, the outer part of the left-hand thread sleeve is in threaded connection with an outer barrel, and the inner barrel is slidably inserted into the outer barrel; the inner barrel comprises an upper connecting coupling, a six-edge short section, an inner barrel upper limiting step, an upper packing rubber barrel inner barrel liquid inlet hole, an inner barrel grouting hole and a lower packing rubber barrel inner barrel liquid inlet hole. The outer barrel comprises a left-hand female buckle, an upper packing rubber barrel and a lower packing rubber barrel are installed on the outer wall of the outer barrel, and an upper packing rubber barrel liquid inlet one-way valve is installed on the barrel wall of the outer barrel. According to the method, grouting plugging is conducted on the target confined water layer, the outer cylinder is reserved in the hole to seal the target confined water layer, then the grouting pipe string is put down to conduct grouting on the whole shaft, triple isolation plugging of water layer grouting, outer cylinder sealing and internal grouting on the target confined water layer is achieved, and the water layer plugging effect is improved.

The invention discloses an in-situ water-preserved mining method for a high-salt high-pressure-bearing bottom plate aquifer, and relates to the technical field of coal mining. The method comprises the steps that the damage depth of a bottom plate, the height of a confined water guide rising zone and the thickness of a minimum safe water-resisting layer are calculated according to geological and mining technical parameters; adjusting according to a preset water-preserved mining condition to enable the working face to meet the water-preserved mining condition; calculating to obtain the grouting thickness of the corrosion-resistant material; corrosion-resistant acrylate grouting liquid is injected from the upper edge of the confined water guide rising zone according to the grouting thickness of the corrosion-resistant material; monitoring the water pressure of a bottom plate aquifer and the height of a confined water guiding and rising zone, and when a preset risk condition is exceeded, determining that the working face has a water-preserved mining failure risk, and performing risk early warning; and when risk early warning occurs, secondary grouting is carried out according to the grouting thickness of the corrosion-resistant material. A chemical corrosion resistant acrylate grouting liquid is injected into the upper edge of a confined water guiding and rising zone, and gradual corrosion damage and bottom plate water inrush of a rock stratum under the action of high-salinity and high-confined water are prevented.

The invention relates to an in-hole transient electromagnetic response characteristic numerical simulation method based on a tunnel three-dimensional geoelectric model and an absorption boundary finite element method, and belongs to the technical field of geophysical exploration. The method comprises the following steps: constructing a tunnel full-space three-dimensional conductivity model; based on a Maxwell equation set, a vector potential and a scalar potential are introduced, a vector control equation of a transient electromagnetic field is derived in combination with Coulomb specifications, first-order absorption boundary conditions are established, and a weak form finite element equation is derived through a Galerkin weighted margin method; generating a global sparse matrix by utilizing spatial discretization and unstructured grid division, and performing iterative solution on the dynamic electromagnetic field by adopting a Newmark time discretization method; and simulating the transient electromagnetic response of geological anomalous bodies with different resistivity and the distance between the geological anomalous bodies and the receiving coil, and analyzing the attenuation characteristic and the geometric gravity center effect to obtain an electromagnetic response rule. The device can accurately simulate the electromagnetic response of abnormal bodies such as aquifers and faults in front of a tunnel face and around drill holes.

The invention discloses a reservoir bank soil hydro-fluctuation belt degradation channel detection method, which can accurately construct a three-dimensional resistivity distribution model of an underground soil body through potential response feedback and resistivity tomography technologies, and provides underground structure information with higher resolution than that of a traditional method. And particularly, the depth limitation of a traditional method in reservoir bank hydro-fluctuation belt deep detection is broken through. In combination with the relation between the resistivity distribution and the hydraulic parameters such as the permeability coefficient, the method not only can accurately identify the distribution of the underground aquifer, but also can effectively position the latent and pre-development degradation channels and analyze the evolution trend of the channels, thereby providing a scientific basis for reservoir bank stability analysis and disaster early warning. Besides, a potential exploratory well is drilled in a detection area and current is applied to collect potential response data, so that complex drilling and excavation operations in traditional exploration are avoided, and high-precision detection can be completed under the condition that the underground environment is not disturbed on a large scale.

The invention relates to the technical field of hydrogeological exploration, and discloses a same-hole different-diameter water pumping test device for multi-aquifer hydraulic connection exploration, the same-hole different-diameter water pumping test device comprises a shell and a detector, the detector is hung in the shell, the upper side of the shell is internally provided with a water inlet, and the shell is internally provided with a buckle mechanism; the buckle mechanism comprises a fixing plate, an extrusion ring is connected to the outer portion of the fixing plate in a clamped mode, a connecting pipe is fixedly connected to the interior of the extrusion ring, a clamping groove is formed in the extrusion ring, a rotating column is rotationally connected to the interior of the fixing plate, a clamping plate is fixedly connected to the outer portion of the rotating column, and a first spring is arranged on the upper surface of the clamping plate. A second spring is arranged on the lower surface of the clamping plate. The buckling mechanism is not affected by moisture, fixing failure or device damage caused by environmental change of the water absorption expansion material is avoided, firm and stable connection between the extrusion ring and the shell is ensured, and the reliability of hydraulic connection exploration data of multiple aquifers is improved.

The invention discloses a vertical shaft freezing method construction parameter dynamic regulation and control method based on optical fiber sensing, and the method comprises the following steps: arranging a sensing optical cable on a freezing wall and setting an early warning threshold value, pre-burying a sensor in a well wall and setting an early warning threshold value, collecting the parameters of the freezing wall and the well wall in real time, and analyzing the parameters to form original data; preprocessing and feature extraction are performed on original data; field construction parameters are integrated and then transmitted to a monitoring center; a double-source data set is constructed; a three-dimensional geology-freezing-construction coupling model is established; whether adjustment is needed or not is judged, and the construction process is dynamically optimized; according to the method, construction parameters can be converted from experience driving to data driving, the safety and efficiency of vertical shaft construction in the complex stratum are improved, and the method is suitable for vertical shaft construction under the complex conditions of a deep aquifer and a weakly cemented stratum.

The invention relates to a simulation calculation method for researching the influence of pore structure deformation on the hydrogen storage efficiency of an underground aquifer, through the combination of a solid mechanical simulation process and a CFD (computational fluid dynamics) simulation process, the simulation system can simulate the influence on the hydrogen storage efficiency of the underground aquifer due to the production of internal fluid and the reduction of pore pressure in the reservoir exploitation process. The process that the original stress balance state of the reservoir is damaged, and consequently the pore structure of the reservoir is deformed is illustrated, and meanwhile, the transportation and storage process of hydrogen in the aquifer under the condition that the pore structure is deformed is illustrated. The distribution condition of the fluid at different time is analyzed by calculating the flowing speed of the fluid and the hydrogen storage amount in the porous medium, and then systematic analysis is carried out on improvement of the underground aquifer hydrogen storage technology. The method is accurate in result, high in convergence, easy to operate and high in reliability, and shows good application value in simulation research of underground aquifer hydrogen storage.

The invention belongs to the technical field of coal mining, and particularly relates to a key parameter design method for targeted grouting and filling pier stud water-preserved coal mining. The method comprises the steps that mine hydrogeology and mining geology data are collected, and the burial depth, the thickness, the physical and mechanical parameters and the gangue breaking and expanding coefficient of a coal rock layer are obtained; adopting discrete element numerical simulation to determine the caving zone height under the insufficient mining critical propulsion length; the drilling depth of the grouting drill hole and the caving zone void ratio are calculated; preparing and testing the mechanical strength and diffusion stacking angle of the grouting material in a laboratory; combining the critical coefficient of insufficient mining, applying a rock stratum subsidence probability integral method, and scientifically designing the interval, the radius and the grouting amount of filling pier columns; and finally, cement pier columns are formed in a caving zone through ground drilling and grouting, an overlying rock stratum is stably supported, and structural deformation of the aquifer is controlled. The method is simple in parameter design and high in accuracy, and space-time interference of a traditional filling process is avoided.

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 an ecological threshold extraction and monitoring early warning method and system based on multi-source data, and relates to the technical field of environment monitoring. The ecological threshold extraction and monitoring early warning method and system based on the multi-source data comprises the following steps: S1, collecting a multi-source data set and performing normalization processing, and identifying an ecological health steady state to form a historical health sample; s2, constructing a three-dimensional aquifer by using a historical healthy sample, and simulating a flow field to divide risk levels; s3, obtaining an ecological sensitive area threshold value based on the multi-source data set and the risk level, and carrying out early warning response; s4, performing early warning treatment according to the divided water resource safety area, establishing a three-dimensional hydrogeological model, and dynamically correcting a water level threshold value; and S5, performing comprehensive evaluation based on the corrected dynamic threshold, executing measures and generating a report closed loop. According to the invention, the accuracy of ecological threshold extraction, monitoring early warning and water resource management is effectively improved, and the problems of false steady state misjudgment and early warning misjudgment and missed judgment of underground water monitoring in the prior art are solved.

The application discloses a kind of remote sensing enhancement systems for groundwater level monitoring, including sensing acquisition module, feature enhancement module, groundwater inversion modeling module, predictive water level modeling module and monitoring sensing enhancement module.The application belongs to the technical field of groundwater level monitoring, specifically a kind of remote sensing enhancement systems for groundwater level monitoring, adopt the comprehensive intelligent idea of combining groundwater inversion modeling and predictive water level modeling, integrate groundwater flow velocity direction inversion data with multi-scale water level prediction results, can not only depict aquifer dynamics boundary condition, but also generate future evolution trend, so as to break through the limitation that traditional system can only make single trend prediction or static state monitoring;Adopt the anisotropic self-adaptive improved concomitant inversion method, carry out water flow velocity direction inversion;Adopt the multi-time-domain groundwater level prediction model improved by combining physical constraints and quantile consistency, carry out groundwater level prediction.

The utility model relates to the technical field of underground water sampling, in particular to an underground water level and quality sampler which comprises a supporting frame and a sampling mechanism, the supporting frame is arranged on the ground for supporting, and the sampling mechanism comprises a winding roller, a steel ruler belt, a reference rod, an installation assembly, a Beller pipe, a first one-way valve, a second one-way valve and a water level sensor. The winding roller is arranged on the supporting frame, one end of the steel ruler belt is wound on the winding roller, the other end of the steel ruler belt is fixedly connected with the installation assembly, the Beller pipe is arranged on the installation assembly and provided with a water inlet and a water outlet, the first one-way valve and the second one-way valve are arranged on the water inlet and the water outlet respectively, and the water level sensor is arranged on the water inlet. The reference rod is arranged on the support frame, and scale marks are arranged on the steel ruler belt, so that the technical problems that the sampling amount is small, the Beller tube ball valve is easy to leak and different aquifer secondary samples are inconvenient to distinguish when the water quality sampler in the prior art is actually used are solved.

The invention relates to the technical field of geological disaster prevention and control, and discloses an underground rock stratum water-bearing while-drilling nuclear magnetic resonance 3D imaging method which comprises the following steps: arranging a plurality of long lead grounding sources with the length of 500-1000 meters and the interval of 10-20 meters on the ground, and supplying alternating current pulses with the frequency of Ramole frequency to enable hydrogen nuclei in underground water to form macroscopic magnetic moment, after the excitation current pulse is cut off, the same coil is used for picking up nuclear magnetic resonance (NMR) signals generated by excitation of different excitation pulse moments; a receiving coil is installed behind the drill bit and dynamically receives FID signals along with advancing of the drill bit. A long wire grounding source is arranged on the ground to form an excitation magnetic field, and a receiving coil is mounted behind a drill bit to dynamically receive nuclear magnetic resonance signals while drilling, so that high-precision detection of the water-bearing property of an underground rock stratum from two dimensions of the earth surface and the underground is realized. The change of the aquifer and the potential water inrush hidden danger can be monitored in real time, and the detection precision and the resolution ratio are effectively improved.

This invention belongs to the field of coal mining technology, specifically relating to a water storage method in aeolian sandy aquifer mining areas. This invention innovatively utilizes directional drilling to connect aeolian sandy aquifers in open-area zones with those in non-open-area zones, improving rapid cross-regional water recharge and significantly increasing the total water storage capacity of the entire mining area. To prevent large amounts of water from being discharged through surface springs, coal pillars are used to alter the original seepage path of the aquifers. The subsidence of the coal pillar area is smaller than that of the mining area, blocking or reducing spring discharge and increasing the migration path of groundwater, thereby increasing infiltration. This invention increases the amount of water resources infiltrated from aeolian sandy ...

The invention discloses a fluid-solid coupling rock mechanics test device for simulating freezing method construction borehole wall stability, which comprises an experiment box body, a freezing pipe is vertically arranged in the middle in the experiment box body, the interior of the freezing pipe is used as a construction area, and a geotechnical material is filled in an area outside the freezing pipe in the experiment box body to serve as a water-bearing layer. The top of the freezing pipe is connected with the refrigerating system, one side of the experiment box is provided with the tide simulation device, the water supply system is connected with the experiment box and the tide simulation device, and the monitoring system is connected with the experiment box. The device can simulate the tide seepage state and monitor the stability of the well wall in real time, can provide more accurate mechanical parameters for freezing method construction on the basis of the fluid-solid coupling rock mechanics principle, and improves the reliability and efficiency of engineering design.

This invention discloses a method for optimizing and numerically simulating hydrological parameters of coalfield aquifers, relating to the field of coalfield hydrogeological exploration and groundwater numerical simulation technology. The method includes the following steps: Step S1: Obtain drilling monitoring data and historical hydrogeological data from multiple boreholes within the target coalfield area, construct an initial aquifer structure model, and generate an initial hydrological parameter field based on the initial aquifer structure model; Step S2: Based on the initial hydrological parameter field, construct an initial groundwater numerical simulation model, and calibrate and verify the initial groundwater numerical simulation model using preset observation well water level data to obtain a benchmark numerical simulation model; Through distributed fiber optic temperature and strain dual-field monitoring, and coupled Bayesian inversion of heat, solid, and fluid, this method overcomes the limitations of traditional pumping / pressure water tests, which suffer from single-point discretization, time lag, and the inability to obtain only static averages.

The invention discloses a water-preserved coal mining method for water-proof soil layer reconstruction, which comprises the following steps: before coal mining, measuring the water level difference of an upper water-containing layer and a lower water-containing layer of a water-proof soil layer and the average natural permeability coefficient of the water-proof soil layer, and sealing a measured drill hole after measurement; directional drilling is carried out on the underlying stratum of the water-proof soil layer bottom plate, directional drilling holes penetrate through the coal mining subsidence area, and the horizontal sections of the directional drilling holes are located at the positions downwards away from the water-proof soil layer bottom plate; freezing in the implemented directional drill by adopting a freezing technology; vertical drilling is carried out on the ground; mixed liquid of loess and water is injected into all the vertical drill holes; the electric field set seepage field is connected through a vertical drill hole to pull the loess; after at least 10 days, performing a conventional water injection experiment on all the vertical drill holes every day, and determining the average permeability coefficient of the reconstructed waterproof soil layer; and after the standard is reached, freezing is stopped, and all the drilled holes are sealed. The method is economical, reasonable, easy to construct, free of pollution and short in effective period.

The present application relates to a kind of coal face water inflow prediction method, system, electronic equipment and medium, specifically related to the field of mine hydrogeology and mining engineering.The method includes determining the water level difference of aquifer and adjacent aquifer and the mining simulation model of mining area according to the drilling column chart of mining area;According to the mining simulation model, the fracture height and the horizontal distance of the fracture distance of pumping test aquifer are obtained by coal seam mining simulation;According to the fracture height and horizontal distance, the drilling position and rock sample of pumping test are obtained;The vertical permeation speed is obtained by using triaxial servo instrument to operate the rock sample with surrounding pressure;According to the vertical permeation speed, the constant flow of pumping test is obtained;According to the drilling position, constant flow and water level difference, the drawdown of stable aquifer is obtained by non-complete well pumping test;According to the drawdown of stable aquifer, the water inflow is obtained.The present application makes the prediction result of water inflow of mining area more accurate, and reduces cost.

This invention discloses a mining area water environment monitoring system, comprising: multiple surface water sensor components uniformly arranged upstream of a mining area river, at multiple mining area water discharge inlets in the middle reaches of the mining area river, and downstream of the mining area river; multiple surface water sampling and monitoring devices uniformly arranged on the mining area river, with the multiple surface water sampling and monitoring devices positioned close to the multiple surface water sensor components; multiple groundwater sensor components respectively arranged at the mining area boundary and at aquifers around the multiple mining area water discharge inlets; and a monitoring center. The mining area water environment monitoring system provided by this invention possesses high security and maintainability, and can provide strong technical support for water environment management and sustainable development in mining areas. A monitoring method for a mining area water environment monitoring system is also disclosed.