497 results about "Pit water" patented technology

The invention belongs to the technical field of safe mining of coal mines, and relates to a hydraulic fracturing roof-cutting entry retaining method based on a crushing agent, which comprises the following steps of: calculating to obtain a target fracturing horizon height h of roof-cutting entry retaining according to a working face height M and a residual crushing coefficient KZ of a roof; calculating the crack initiation pressure P of a target fractured position of the roof-cut entry retaining according to the rock stress P * and the tensile strength R of the rock at the fractured position of the roof-cut entry retaining; drilling is conducted according to the drilling position, the drilling length L and the drilling angle alpha; the prepared BC-efficient soundless cracking agent flowable pasty slurry is injected into a drill hole through a hydraulic fracturing system and is fractured at a target fractured layer, and after the BC-efficient soundless cracking agent flowable pasty slurry is subjected to standing reaction, the drill hole is fractured for multiple times in a single-hole retreating mode. The problems that a large amount of water resources are consumed, the rock permeability is possibly increased due to high-pressure water injection, and mine water disaster hidden dangers are caused are solved.

The invention relates to the technical field of mine safety monitoring and geophysical exploration, in particular to a mine water disaster intelligent alarm system responding to multi-dimensional physical field parameter abnormity, which comprises a full-space data acquisition module for acquiring monitoring area observation data and calling a background geological physical model; the ideal reference reconstruction module is used for constructing an ideal physical field reference in a non-abnormal state; the double difference extraction module is used for calculating an observation residual error of observation data relative to a reference and a theoretical residual error of simulation response relative to the reference; the inversion coupling verification module is used for driving the theoretical residual error to approach to the observation residual error and extracting parameter sensitivity characteristics; the intelligent alarm judgment module is used for analyzing sensitivity characteristics and convergence states; generating an alarm instruction if the feature is determined to be the entity fluid abnormal feature; if it is determined that the target abnormal interference feature is not the target abnormal interference feature, signal suppression processing is executed; according to the invention, the false alarm rate of mine water disaster detection is greatly reduced.

The invention relates to the technical field of mine solid waste treatment and carbon dioxide sealing and storage, and particularly discloses a system and a method for sealing and storing carbon dioxide by utilizing coal-based solid waste and mine water to prepare slurry. The system comprises a cement bin, a gangue bin, a coal ash bin, a gasified slag bin, a mine water storage tank, a stirring reaction kettle, a carbon dioxide storage tank, a slurry temporary storage tank, a vacuum pump and a slurry pump, and the stability and adsorption efficiency of carbon dioxide fixation are improved in the mode that coal-based solid waste, mine water and carbon dioxide are subjected to chemical reaction and physical adsorption; meanwhile, the prepared backfill slurry has high-strength anti-pressure ability, the stability of the backfilled underground goaf is better improved, further, coal-based solid waste and mine water are utilized for waste recycling, and the carbon dioxide storage cost is reduced.

The invention relates to a mine water depth sealing layer site selection evaluation method and system based on multi-parameter coupling. The method comprises the following steps: acquiring geological, hydrological and engineering parameters through geological exploration equipment and the like, and carrying out wavelet transform noise reduction and Kriging interpolation processing; determining a key parameter set and weight by using an analytic hierarchy process, constructing a comprehensive evaluation model coupling the analytic hierarchy process and fuzzy mathematics, and generating a membership matrix and a multi-field coupling numerical model; and calculating a fitness index through spatial overlay analysis, generating a sealing suitability partition map, outputting an evaluation report containing risk early warning, and generating an interactive three-dimensional site selection decision interface. The system comprises a data acquisition and preprocessing module, a parameter processing module, a weight distribution module and the like. The simulation precision and the risk positioning efficiency are improved, and a comprehensive evaluation scheme is provided for site selection of the sealing layer of the water depth of the mine.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a composite material as well as a preparation method and application thereof. According to the composite material, blended hydrogel of sodium alginate and polyvinyl alcohol is used as a matrix, zeolite molecular sieves, activated charcoal and zero-valent iron particles are embedded into the matrix to form microspheres, sulfate reducing bacteria are immobilized on the surfaces of the microspheres, the composite material is directly added into a mine water anaerobic reactor, the sulfate radical removal rate exceeds 92%, and the sulfate radical removal rate exceeds 92%. Heavy metals such as Cu, Pb and Cr in the mine water can be synchronously precipitated, and the treatment efficiency and stability of the anaerobic system are remarkably improved.

The invention provides a preparation method of a multi-source coal-based solid waste filling material, and belongs to the technical field of solid waste reutilization, and the preparation method comprises the following steps: uniformly mixing cement, fly ash, furnace bottom slag, desulfurized gypsum, coal gangue, gasified slag and a water reducing agent to obtain a mixed material; and adding fluorine-containing mine water into the mixed material, stirring and mixing to obtain the cemented multi-source coal-based solid waste filling material with predetermined fluidity and bleeding rate. The invention further provides application of the multi-source coal-based solid waste filling material. According to the preparation method and application of the multi-source coal-based solid waste filling material, the coal-based solid waste can be comprehensively recycled and is environmentally friendly, and the prepared multi-source coal-based solid waste filling material can effectively control and treat fluorine ions in mine water.

The invention discloses a comprehensive utilization scheduling method based on mine water quality difference. The method comprises the steps that the matching degree of a mine and a mine water utilization source is calculated; calculating weight coefficients of conveying the mine water to the mine water utilization source from different mines, and screening different mine water quantities conveyed to the mine water utilization source from the mines based on an optimal matching principle; a water quality detection system installed at a mine mouth collects water quality data of mine water in real time, predicts the water quality data of the mine water in real time and outputs the predicted water quality data; and updating the mine number and the mine water quantity for conveying the mine water to the mine water utilization source, thereby realizing real-time scheduling and updating of the dynamic change of the mine water quality. According to the scheme, dynamic regulation and control of the scheduling process are realized while the load and cost of water purification during mine water utilization are reduced.

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 mine water fluorine removal agent and a preparation method and application thereof, and belongs to the technical field of wastewater treatment.The preparation method of the fluorine removal agent comprises the following steps that aluminum salt, calcium salt, magnesium salt and ferric salt are added into water to be stirred, then a chelating agent, a hydroxy carboxylic acid compound and a dispersing agent are added, the mixture is heated to 40-60 DEG C to be stirred and dispersed, and heat preservation is conducted. The preparation method gets rid of the constraint of traditional calcium salt, introduces the chelating agent, the hydroxy carboxylic acid compound and the dispersing agent on the basis of controlling the compatibility of the materials and the synthesis reaction process, and utilizes the excellent fluorine ion adsorption performance and flocculation settling performance of the aluminum-calcium-magnesium-iron-based quaternary metal material to improve the fluorine ion adsorption performance of the aluminum-calcium-magnesium-iron-based quaternary metal material. Quaternary metals are assembled into a long-chain porous structure through chelation, the specific surface area and the pore volume are further increased, the contact area with fluorine ions in mine water is increased, and the porous structure adsorbs complexing groups to achieve the purposes of rapid coordination, strong adsorption, precise chelation, flocculating settling and efficient removal of fluoride in mine water.

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 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 mine water treatment, in particular to a mine water filtering device.According to the mine water filtering device, an ultrafiltration membrane assembly is arranged in a membrane pool to filter mine water, a pressure detector is arranged at a liquid outlet to monitor the water pressure in real time, and the pressure detector transmits real-time data to a controller; the controller is used for judging whether the water pressure entering the clean water tank meets the water production requirement or not, and automatically controlling the starting and stopping of each electrical device according to the judgment result, so that the spraying pump and the moving assembly are started in time when the membrane pollution problem occurs, and the clean water in the clean water tank is pumped to the spray head through the water production pipeline to clean the ultrafiltration membrane assembly; and different positions of the ultrafiltration membrane assembly are cleaned by moving the spray head through the moving assembly, so that pollutants on the surface of the ultrafiltration membrane can be quickly and thoroughly removed, and the water production efficiency is ensured. And moreover, the device does not need to add a coagulant to carry out flocculation and sedimentation treatment on the mine water, so that potential risks of drug residues on subsequent recycled water quality are avoided.

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 relates to the technical field of mine water treatment, and discloses a method for treating high-calcium-hardness mine water through induced crystallization. The method comprises the following steps: adding coal gangue and sodium phosphate or sodium hydrogen phosphate into the mine water to carry out first induced crystallization so as to remove calcium ions in the mine water; according to the method provided by the invention, the concentration of calcium ions in the mine water after calcium removal can be stabilized for a long time, and the removal rate of the mine water is improved to a certain extent. The method provided by the invention can effectively ensure that the Ca < 2 + > content of the effluent quality of the mine water reaches the standard, and can also reduce secondary environmental pollution.

The invention relates to a method for preparing a cement admixture resistant to mine water erosion by microwave synergistic chemical modification of fly ash, and belongs to the technical field of industrial solid waste recycling and building materials.According to the method, fly ash particles are mechanically activated and crushed, and a composite modifier treatment and gradient microwave activation technology is combined, so that the cement admixture resistant to mine water erosion is prepared; the activity of the fly ash and the erosion resistance of the cement-based material are obviously improved. The preparation process comprises the following steps: carrying out multi-stage mechanical grinding on the fly ash to obtain ultrafine powder; adding a composite modifier containing a mineral active component, an organic-inorganic composite modifier and a nano functional material for chemical activation; microwave irradiation and nitrogen quenching are adopted to cooperatively process and reconstruct the microstructure of the material; and finally forming through a microwave-steam coupling curing process. The obtained cement admixture can effectively solidify corrosive ions in mine water, improve the durability of traditional cement in a complex ion environment, and realize bulk resource utilization of fly ash solid waste.

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 foundation pit water gushing iron ore grading thixotropic blockage reduction method which comprises the steps that iron ore tailings are crushed and screened into multi-stage particle size particles, and a customized mold is subjected to 3D printing based on foundation pit scanning data; paving particles in a mold layer by layer, doping iron powder, and cementing and curing cement paste to form a prefabricated body; the prefabricated body is installed to a water gushing area, the slurry viscosity is increased through a grading contact network, a weak gravitational flow state is triggered to be transiently changed to an anti-scouring state, and water flow speed reduction is achieved; alternating field induction micro-vibration is synchronously started during lateral grouting, and grout permeation and bubble discharge are driven; after solidification, the guide core body is pulled away, and remaining pore channels are self-compacted by a grading system to form an anti-seepage structure. The method has the advantages that the anti-scouring performance is enhanced; particle-slurry-foundation pit curved surface triple self-adaptive combination is carried out; the engineering cost is reduced.

The invention discloses a mining area water resource optimal configuration method, which comprises the following steps: acquiring related data of mining area water resources, including water resources at a water supply end and water use sources at a water demand end; giving a water supply quality sequence and a water supply priority, and determining a graded and quality-divided water distribution rule according to the water supply quality sequence and the water supply priority; constructing a mining area water resource optimal configuration model; solving the mining area water resource optimal configuration model by using a multi-objective genetic algorithm to obtain a Pareto solution, namely an optimal configuration scheme of water resources; a mining area water resource optimal configuration model is constructed, an economic target is directly associated with water supply economic benefits, an environment target focuses on mine water displacement, and a fair target is measured by means of a Gini coefficient, so that consideration on constraint conditions is more comprehensive compared with the prior art; the feasibility and stability of a model solving result in practical application can be ensured, and the technical problem that the comprehensive utilization efficiency of water resources in a mining area is not high in the prior art is solved.

The invention discloses a mine working face water inflow prediction method based on mining water yield comparison. The method comprises the steps that 1, the development height of a water flowing fissure zone is calculated; 2, counting the sandstone equivalent thickness, the sand-to-ground ratio, the core recovery rate, the brittle-plastic rock thickness ratio, the unit water inflow and the permeability coefficient in the development height of the water flowing fractured zone as multivariate data; 3, determining the comprehensive weight of each evaluation index in the multivariate data; 4, drawing a contour map of mining area mining water yield indexes; 5, giving a fitting equation of the water inflow of the working face and the water yield index, and predicting the water inflow of the working face; according to the method, the contour map of the mining water yield index of the mining area is formed by coupling all the parameters, the correlation equation of the mining water yield index and the water inflow is constructed, the water inflow of the working face to be mined can be predicted based on the known mining water yield index through the equation, and the method is easy to operate and high in practicability. And the method is of great significance to the construction of mine water disaster prevention and treatment and mine water treatment facilities.

The invention provides a mine water softening and dosing system and a control method, and belongs to the technical field of water treatment equipment, and the mine water softening and dosing system comprises water treatment equipment, a detection mechanism, an adjusting mechanism and a control unit. Through cooperation of the detection mechanism and the control unit, feed-forward detection and feed-back detection of softening treatment of mine water are achieved, and the control unit can achieve determination of the initial feeding amount of drugs and adjustment of subsequent feeding according to the feed-forward detection and the feed-back detection; the flow, alkalinity and pH value of inlet water and outlet water as well as the turbidity and alumen ustum image of the outlet water are detected at the same time, and the control system can comprehensively sense the water quality change and the treatment effect according to the detection result, so that the refined and automatic adjustment of the addition of various medicaments is realized, the dependence on human eye observation and manual test is reduced, and the operation is simple and convenient. The intelligent level and the operation efficiency of the whole water treatment process are improved.

The invention discloses a mine water sealing layer stability evaluation method based on micro-seismic monitoring, and belongs to the field of mine water sealing layers. The invention discloses a mine water sealing layer stability evaluation method based on micro-seismic monitoring. The method comprises the following steps: S1, identifying a mine water sealing layer area; s2, monitoring the mine water storage area in real time; s3, determining the spatial distribution density and the energy accumulation trend of the micro-seismic events; s4, analyzing the micro-seismic event clustering characteristic and the evolution law of water seal reservoir rock mass fracture; and S5, obtaining a stability evaluation result of the mine water sealing layer. The problem that cross-regional environmental disasters such as water inrush or surface collapse are easily caused in the prior art is solved, the accuracy and reliability of data are ensured, geological analysis and prediction can be more deeply carried out, damage to the environment and cost input are reduced, the activation rule of a hidden structure and the fracture depth of a bottom plate are effectively monitored, and the monitoring accuracy and reliability of the hidden structure are improved. Therefore, the water inrush risk can be predicted and forecasted.

The invention discloses a hardness removal method and system for a sulfate-based mine water concentrated solution, and the method comprises the following steps: sequentially introducing the sulfate-based mine water concentrated solution into a coagulating basin and a flocculation basin for chemical treatment, and allowing the treated mine water concentrated solution to enter a sedimentation basin for standing to obtain softened effluent; wherein lime or sodium hydroxide and a coagulant are put into the coagulating basin, and the coagulating basin is used for carrying out coagulating treatment on the mine water concentrated solution; sodium carbonate, a coagulant aid and an inducer seed crystal are put into the flocculation basin and used for carrying out flocculation treatment and precipitation reaction on the mine water concentrated solution subjected to coagulation treatment, the standing time of the flocculation basin is 14-45 minutes, the precipitation reaction time is 6-30 minutes, and the excessive amount of sodium carbonate is 1.5-2.5 mmol / L. According to the invention, the hardness of calcium in softened water can be lower than 20mg / L.

The invention discloses a mine water disaster intelligent early warning system and method, and relates to the technical field of mine water disaster monitoring. The early warning method comprises water inrush risk early warning, well flooding risk early warning and water environment risk early warning. According to the water inrush risk early warning, water inflow time sequence data are processed through a sliding window, three-level water inrush risk early warning is excited continuously for three times, early warning can be upgraded, and the water inrush is predicted; three-level threshold values are set for well flooding risk early warning on the basis of double ratios of water inflow, drainage capacity and water sump volume; water environment risk early warning monitors water quality according to the national standard, and early warning is carried out in three levels according to pollution risk indexes. The early warning system comprises a monitoring unit, a data management unit, a water disaster early warning unit and a visualization unit. Through multi-parameter cooperative monitoring, intelligent analysis and expert judgment, the accuracy, timeliness and intelligent level of water disaster early warning can be remarkably improved.

The invention discloses a closed mine in-situ electrolytic hydrogen production-underground energy storage-blast power generation integrated method, which comprises the following steps: firstly, building a mine water underground reservoir in a closed mine, carrying out deep treatment on mine water, and finally, continuously converting the mine water into hydrogen by adopting an electrolytic hydrogen production mode to realize in-situ electrolytic hydrogen production of the mine water. Then a roadway of the closed mine is transformed to form an underground hydrogen storage space used for storing prepared hydrogen; when stable power supply is needed, the hydrogen is conveyed to the explosion engine and combined with the pulverized coal, and pulverized coal-hydrogen mixed explosion power generation is carried out; and products generated after explosion power generation are collected, and resources are recycled after the products are classified. According to the system, mine water resources, closed mine underground space resources and surplus wind and light power are matched with one another, electric energy is converted and stored when being surplus and is released and supplemented in time when needing to be supplemented, and therefore it is guaranteed that electric energy is stably supplied under various weather conditions while waste resources are effectively utilized.

The invention provides an intelligent optimization method and system for a mine water deep reinjection horizon, and the method comprises the steps: 1, constructing a three-dimensional geological twin body of a mining area, which comprises the definition of a multi-objective function: maximizing a safety objective f1; minimizing the economical efficiency target f2; the environmental protection target f3 is maximized; 2, multi-objective optimization and Pareto optimal solution set generation are carried out; step 3, intelligent decision and optimal horizon determination: step 301, selecting an optimal horizon; 302, chemical components of mine water are determined, and all buried layer positions are marked as preliminary screening layer positions; and step 303, obtaining comprehensive compatibility indexes of the preliminary screening horizon, and marking the preliminary screening horizon with the maximum value in the comprehensive compatibility indexes as a preferred horizon. According to the method, the horizon optimization efficiency is improved through dynamic modeling and multi-objective optimization, the optimization accuracy is ensured by means of multi-dimensional compatibility evaluation and multi-field coupling analysis, and a technical path with high efficiency and reliability is provided for scientific decision-making of the mine water reinjection horizon.

The invention provides a high-precision mine water recharge dynamic monitoring system and method.The high-precision mine water recharge dynamic monitoring system comprises a distributed sound wave data acquisition subsystem, the distributed sound wave data acquisition subsystem is connected with one end of an armored optical cable, and the armored optical cable is fed into a recharge drill hole through an armored optical cable laying device; the recharge drill hole is further connected with a mine water recharge subsystem for mine water recharge. The sound wave signal processing and feature extraction subsystem comprises a wavelet multi-scale decomposition module, a target frequency band extraction module, a sub-band energy calculation module, a non-target frequency band suppression module and a signal reconstruction module; the intelligent injection channel identification and flow estimation subsystem comprises an injection channel identification module, a flow distribution calculation module and a dominant channel intelligent identification module. The system has the full-shaft and high-temporal-spatial-resolution dynamic monitoring capability, the injection profile dynamic analysis and dominant channel intelligent identification capability, the high reliability and long service life capability in an extreme environment, and the recharge process safety and optimization decision support capability.

The invention belongs to the technical field of water purification data processing, and particularly provides a mine water efficient purification calculation method, system and device and a medium. Preprocessing the original data of the mine water to obtain a water quality comprehensive index; performing trend analysis on the comprehensive indexes, calculating water quality stability in cooperation with a pH value, identifying a pollution rule in combination with correlation analysis, and generating an abnormal mode identifier through mode identification and cross check; and determining the purification demand level based on the abnormal mode identifier, and dynamically adjusting and optimizing the dosage parameter. The problems of incomplete purification, resource consumption increase and frequent manual adjustment caused by dependence on fixed parameters and difficulty in matching of water quality dynamic change in the prior art are effectively solved, real-time self-adaptive treatment of mine water purification is realized, the purification efficiency is improved, the resource waste is reduced, the manual intervention frequency is reduced, and the economic benefit is increased. And the economical efficiency and stability of treatment are guaranteed.

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 utility model is applied to the technical field of mine water treatment, and discloses graded filtering equipment for mine water treatment, which comprises a sinking bin, a switching motor is fixedly mounted in the lower end of the sinking bin, the upper end of an output shaft of the switching motor penetrates through the inner bottom surface of the sinking bin, and the upper end of the output shaft of the switching motor is fixedly connected with a driving disc; a pressure filtering mechanism is arranged in the upper end of the sinking bin, and mine water is filtered and recycled through underwater pressure of a mine. The graded filtering equipment for mine water treatment is provided with a pressure filtering mechanism and a suction filtering mechanism, primary filtering is conducted through a first-stage filtering net at a first liquid inlet, further filtering is conducted through a second-stage filtering disc in a liquid storage cavity, and secondary filtering is conducted through a third-stage filtering element in the middle section of a connecting pipe, so that multi-stage filtering of mine water is achieved; various impurities, suspended matters and harmful substances in the mine water can be effectively removed, and the quality of treated water is ensured to meet the reuse standard.

The invention discloses a well pit water interception and soil retaining parapet wall structure, and relates to the technical field of well pit water interception construction. A well pit water-intercepting and soil-retaining parapet wall structure comprises a plurality of steel sheet piles which are spliced in a meshed mode, each steel sheet pile comprises a bottom plate and side plates connected with the two ends of the bottom plate respectively, meshing buckles are arranged on the side plates, and each meshing buckle comprises a first frame plate, a second frame plate and a filling meshing connecting assembly, and the first frame plate, the second frame plate and the side plates are continuously formed. The meshing buckles between the adjacent steel sheet piles are meshed with each other; the arc surface clinging design is adopted for structures such as the first inner wall arc surface / second inner wall arc surface between the side plate and the first frame plate, the first inner wall arc surface / second inner wall arc surface between the first frame plate and the second frame plate, the outer wall of the first water interception arc part / second water interception semi-arc part, the first inner folded plate arc surface / second inner folded plate arc surface and the like, traditional right-angle splicing is replaced, continuous sealing can be achieved through an arc interface, and gaps easily generated by right-angle splicing are eliminated; and the external expansion arc parts form pre-pressure through mutual extrusion, so that the fitting sealing performance is further improved, and the watertight effect can be realized without depending on an external sealing strip.