36 results about "WATER HAZARDS" patented technology

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.

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 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 integrated prevention and treatment method of the burned rock water disaster of the present application proposes the concept of combination of resistance and permeation and advanced active prevention and treatment, breaks the thinking stereotype of traditional coal seam roof water disaster independently relying on water drainage and full section curtain interception, and creates a new concept of active comprehensive prevention and treatment of dynamic supply interception, drainage and dry static reserves, and combined use of local bypass flow. The problems of multiple solutions of geophysical prospecting and limitations of drilling are scientifically solved, and for the first time, the fine quantitative delineation of the strong water-conducting burned rock zone is realized from two-dimensional range to three-dimensional water-rich structure. A gravity drainage of an inclined borehole, a roadway catchment, and a gravity flow of a catchment channel form a passive underground water drainage link. The difficulty of drainage and dryness in treating the burned rock water disaster is reduced, and due to the use of the passive underground water drainage link of the gravity flow of the catchment channel, the cost is further reduced. The collected clean water flows into the external clean water warehouse, realizes repeated use, reduces resource waste, and is suitable for large-scale use and promotion in the field of coal mine water disaster prevention and treatment technology.

The application discloses a kind of multivariate dynamic test device and test method under thick loose layer, belong to the technical field of physical simulation of mine exploitation.The device includes main frame, loose layer migration monitoring module, water inrush simulation module, rock burst simulation module and total control module.Water inrush simulation module includes roof water disaster simulation module and floor water disaster simulation module to realize controllable water inrush simulation;Rock burst simulation module realizes roadway local fracture and large deformation simulation through movable air bag energy release assembly and segmented striker trigger assembly.The application can simulate the multivariate dynamic disaster chain evolution process of loose layer migration, roof and floor water inrush, rock burst and roadway instability induced by mining under thick loose layer in the same test platform, and provides test support for deep coal mine multivariate dynamic disaster collaborative prevention and control.

The application provides an electromagnetic dynamic monitoring and early warning system, method, electronic equipment and storage medium, and the system comprises a distributed electromagnetic sensor array, a master control transceiver integrated machine and a cloud early warning platform. The distributed electromagnetic sensor array is arranged in a non-contact mode and is used for collecting electromagnetic response signals of strata in a mining influence area; the master control transceiver integrated machine is connected with the sensor array, realizes time-sharing scheduling control of multiple sensors, electromagnetic signal transmission and reception, local data preprocessing and remote transmission; the cloud early warning platform is in communication with the master control transceiver integrated machine, and completes monitoring data inversion analysis, quantitative calculation of geoelectric parameters and comprehensive evaluation of water disaster risks. The application realizes whole-process dynamic monitoring and graded early warning of water disaster hazards in a mining area, effectively overcomes the disadvantages of static lag and low accuracy of a traditional water disaster detection mode, improves the water disaster identification precision and early warning timeliness in a complex mining area, and is suitable for long-term prevention and control of water disasters in various mines.

This invention relates to a method for evaluating the degree of water erosion development in rock masses based on core logging. Based on detailed logging of collected core samples, and considering the integrity of the core samples after alteration, a qualitative grading method is used to evaluate the degree of core development. The evaluation results are digitized and software is used to create contour maps of the water erosion degree in the rock mass. This visually displays the degree of water erosion development and interrelationships among multiple boreholes within the same geological space, and predicts the location and extent of potential water erosion development areas in the rock mass. This method uses the degree of alteration development caused by groundwater erosion of the core sample as a relevant indicator of water hazard formation. It simulates and predicts potential alteration areas in the rock mass, identifies potential alteration areas as key targets for mine water hazard prevention and control, and formulates effective remediation measures to minimize the harm of potential groundwater in alteration zones to later mining operations.

The present application provides a coal seam drilling grouting water conservation mining method, the coal seam drilling grouting water conservation mining method comprises the following steps: surveying the hydrogeological conditions of coal mine area, determining the position of reconstructed water-resisting layer, according to the survey results, setting the reconstructed water-resisting layer at the top of the fissure zone before the working face mining, setting the reconstructed water-resisting layer in the middle of the fissure zone after the working face mining, designing the water conservation scheme of the reconstructed water-resisting layer after the working face mining, the water conservation scheme includes drilling arrangement and grouting parameters, the drilling arrangement includes at least one of surface drilling and underground drilling, constructing grouting drilling, preparing grouting material, carrying out grouting operation, after grouting is completed, effect test and evaluation are carried out, and the expected water conservation effect is ensured. The coal seam drilling grouting water conservation mining method can effectively solve the problem of coal mine water disaster, and ensure the safety of mine and the rational utilization of water resources.

The application provides a burnt rock water hazard treatment method based on well-ground segmented exploration and drainage, comprising the following steps: step one, determining the water enrichment zoning of the burnt rock aquifer; step two, determining the ground water drainage hole arrangement; step three, draining the top burnt rock water level by using the ground water drainage hole; step four, determining the downhole directional drilling hole arrangement; step five, determining the downhole directional water drainage hole arrangement; step six, draining the top burnt rock water level by using the downhole directional water drainage hole; step seven, verifying the drainage effect and supplementing the drainage. The application superimposes the burnt rock bottom boundary contour map and the surface valley distribution map to comprehensively determine the water enrichment zone distribution of the burnt rock aquifer, improves the exploration precision of the burnt rock aquifer water enrichment boundary, and provides an accurate target for the water exploration and drainage drilling hole arrangement. On this basis, the defects that the traditional ground or downhole water exploration and drainage method cannot effectively cover the burnt rock water enrichment abnormal zone are overcome, the drainage effect is improved, and the safety of the large roadway excavation and the working face mining is ensured.

This invention relates to a method for classifying and identifying anomalies in underground radio wave imaging based on differences in electrical parameters, belonging to the field of underground geological exploration and ore body exploration technology. This invention aims to solve the problem of misjudgment of anomalies caused by the similarity in signal responses between water bodies and ore bodies in large-scale water-bearing metal mines. The method includes: constructing a dedicated electrical parameter database; using a radio wave imaging system, setting up measuring points according to specifications and selecting a 0.3MHz frequency to collect data, and obtaining a standardized dataset after preprocessing; establishing the correspondence between differences in electrical parameters and radio wave anomaly characteristics, and delineating anomaly areas through inversion; accurately classifying ore bodies and water-rich anomalies based on mechanistic differences, verifying and optimizing the identification criteria; and outputting classification results and detection reports. This invention uses the essential constraints of electrical mechanism for inversion interpretation, improving the resistance to water interference and classification accuracy. It is less subjective and more practical, providing support for mining design and water hazard prevention in large-scale water-bearing metal mines.

The application provides a mine roof water disaster monitoring method based on the induced polarization method and related equipment, and two drilling modes are provided according to the development position of the water flowing fractured zone on the mine roof: when the water flowing fractured zone develops to the ground, vertical drilling is selected on the side close to the ground of the mine roof, the electrode string arranged in the drilling is more easily avoided from the caving zone in the mine roof, the drilling difficulty is reduced, and the drilling cost is saved while the monitoring accuracy is ensured; and when the water flowing fractured zone does not develop to the ground, drilling with a certain angle is selected on the side close to the working face of the mine roof, the electrode string can enter the water flowing fractured zone when the drilling depth is shallow, accurate monitoring data of the electrode string are obtained, the drilling difficulty is reduced, and the drilling cost is saved. Then, the apparent resistivity and the apparent polarization rate of the surrounding rock of the mine roof are monitored in real time through the electrode string, and the water inrush of the coal seam roof is quickly and accurately monitored.

The application provides a GIS map-based safety monitoring and early warning method for a coal mining process, comprising the following steps: acquiring the number of over-limit alarms of methane and carbon monoxide, the number of over-limit alarms of mine earthquake detection values, the number of water damage alarms, and the number of abnormal alarms of coal mining personnel of each coal mine in real time, and distinguishing the alarms on a GIS map by different marks; and acquiring the monitoring data of each sensor of each coal mine in real time, and displaying the monitoring data in a preset period by a curve.

The application discloses a kind of weak cementing overburden grouting delamination water disaster evaluation methods, system, equipment and medium, the method is first based on the rock stratum distribution and mechanical parameters of target weak cementing overburden, constructs overburden numerical model and similarity model, then the numerical model and the similarity model are simulated to coal seam excavation, analyze simulation result, determine target grouting delamination space height and water flowing fractured zone height, and according to mine exploitation height, calculate reasonable grouting layer thickness, according to the water flowing fractured zone height and the reasonable grouting layer thickness, determine safety height, finally when the target grouting delamination space height is less than the safety height, according to water hazard risk determination of water storage characteristic parameter. Using the present application can improve the accuracy and reliability of weak cementing overburden grouting delamination water disaster risk determination, effectively guarantee mine safety production.

This invention relates to a method and device for intelligent identification of mine water based on multispectral fusion, belonging to the field of coal mine hydrogeology and safety monitoring. This method aims to solve the problems of poor timeliness, low accuracy, and weak anti-interference ability in existing mine water source identification methods. The technical solution involves simultaneously acquiring near-infrared and Raman spectra of the water source and extracting features. Then, based on the physical and environmental characteristics of the water body, the matching degree of each spectral feature is evaluated. Furthermore, the features are weighted and fused based on the credibility of this matching degree. Finally, the fused features are input into a trained identification model to output the water source type and risk level. This invention can effectively reduce environmental interference and achieve rapid and accurate identification and early warning of various water sources such as old workings water, karst water, and polluted water bodies, thereby improving the mine water hazard prevention and control capabilities.

This invention relates to the field of mine water hazard prevention and control technology, and provides a method for efficient drainage of water accumulation in goaf areas affected by repeated mining of multiple coal seams in close proximity. The method includes the following steps: conducting surface geophysical exploration of the prevention and control area and collecting mining information of the coal seams in the goaf; delineating abnormal water accumulation areas and low-lying areas within the prevention and control area; deploying water level monitoring holes and surface drainage holes in the abnormal water accumulation areas and low-lying areas; designing and constructing underground directional boreholes to ensure that the trajectory of the underground directional boreholes covers the abnormal water accumulation areas and low-lying areas; and performing through-hole drilling on the underground directional boreholes until the water output of each underground directional borehole drops to a target value. The following describes the process of testing the drainage effect in the prevention and control area. This invention, through ground geophysical exploration of the prevention and control area and combined with collected information on the recovery of coal seams overlying the goaf, can accurately delineate areas of abnormal water accumulation and low-lying terrain. By deploying water level monitoring boreholes and surface drainage boreholes within the delineated key areas, it not only achieves real-time monitoring of groundwater levels in these areas but also enables simultaneous drainage both above and below ground. Furthermore, by designing and constructing directional boreholes underground, ensuring their trajectory covers areas of abnormal water accumulation and low-lying terrain, it can more directly and effectively prevent water accumulation in the goaf overlying coal seams of the target area.

This application relates to the technical field of foundation pits, and in particular to an integrated system for stopping, lowering, draining, and intercepting water in a wharf foundation pit. The system includes a foundation pit body, a water-stopping curtain, dewatering wells, a drainage structure, and an intercepting structure. The water-stopping curtain is installed along the edge of the top of the foundation pit body to block or extend the hydraulic channel between the interior and exterior groundwater. The dewatering wells are located inside the opening at the top of the foundation pit body to allow groundwater to infiltrate and to extract the infiltrated groundwater. The drainage structure is installed around the bottom of the foundation pit body to drain accumulated water from within the foundation pit body. The intercepting structure is located outside the top opening of the foundation pit body to block external water inflow. The technical solution provided in this application integrates four functional modules—water stopping, dewatering, drainage, and intercepting—to form a three-dimensional, full-cycle foundation pit water hazard prevention and control system.

The application discloses a floor water disaster prevention method based on mine pressure regulation and control, and belongs to the technical field of mine disaster prevention and control. The method is characterized in that: a large-diameter pressure relief borehole is constructed at the working face roadway side, the concentrated stress is transferred to the deep part, and a shallow coal body impedance area is formed; roof blasting is performed at the goaf side, the collapsed gangue is accumulated on the goaf floor to form a collapsed gangue impedance layer, and pressure stress is generated on the floor; the floor damage depth is dynamically monitored, the ratio of the floor aquiclude thickness to the safe aquiclude thickness is obtained, and the borehole spacing, the blasting hole spacing and the charge amount are adjusted in a graded progressive manner according to the 1.3 times and 1.1 times two-level threshold values. The application actively inhibits the downward expansion of the floor damage from the mechanical source, is simple and convenient to construct, has low cost, realizes parameter optimization through graded progressive regulation, and effectively reduces the floor water disaster risk.

1. Name of the product in this design: Graphical User Interface of Intelligent Early Warning System for Mine Water Hazards for Electronic Equipment. 2. Purpose of this design: An electronic device. 3. The key design features of this product are the graphical user interface displayed on the screen. 4. The image or photograph that best illustrates the design's key points: the front view. 5. Purpose of the graphical user interface: The graphical user interface of this product is the user interaction interface of the PC-based intelligent early warning system for mine water hazards. It displays in real time the status of the mine's hydrogeological conditions, changes in water hazard-related factors, water inrush warning status, and water hazard warning status. Users can freely switch between this interface and other interfaces by clicking, touching, or swiping the screen to meet different usage scenarios. The main view is the main interface of this product (login interface). After entering the username, password and verification code on the main view interface, when you click the "Login" button, the interface will display the changed state diagram 1, showing the workbench interface. Click the navigation menu "Digital Twin" above the changed state diagram 1 to enter the changed state diagram 2, which displays the three-dimensional, real-time mine water inflow diagram interface. Click the navigation menu "Hydrogeological Profile" above the changed state diagram 2 to enter the changed state diagram 3, which displays the mine water inrush warning list.

The invention belongs to the technical field of vision and intelligent monitoring, and particularly relates to an all-weather water area hidden danger target monitoring method and device based on image enhancement. The method comprises the following steps: acquiring an all-weather water area scene image, marking a coordinate frame of a hidden danger target by using a marking tool, and generating an all-weather water area hidden danger target data set; correcting the acquired all-weather water area scene image by using an extreme weather correction algorithm; adopting a yo11-x model as a hidden danger target identification model of the water area scene; and deploying an extreme weather correction algorithm and the trained yolo11-x model to a server side, and if a hidden danger target is recognized, pushing target information to an application side. The problem of imaging degradation of fog, rain and night scenes is solved, and the problem that the real-time requirement is difficult to meet due to too high calculation load is solved.

This invention relates to a method for investigating hidden disaster-causing factors of water in old coal mine workings, belonging to the field of coal mine safety and geological disaster prevention technology. It includes: collecting multi-source data to establish an initial ledger and delineate suspected areas; updating suspected areas through surface surveys and remote sensing interpretation; conducting regional scanning exploration using surface geophysical exploration; conducting advanced and detailed exploration using underground geophysical exploration; constructing verification boreholes based on geophysical exploration results to obtain key hydrogeological parameters; measuring the development characteristics of water-conducting channels; integrating all data for dynamic comprehensive evaluation and drawing dynamically updated hazard maps and three-line management maps; and finally integrating into a unified information platform to establish an intelligent risk early warning mechanism. This invention improves exploration accuracy through a ground-well collaborative feedback mechanism, achieves dynamic risk assessment and prediction through multi-source coupling and time-series analysis, and constructs an intelligent early warning system, significantly improving the accuracy, foresight, and proactive prevention and control capabilities of water hazards in old coal mine workings.

This invention discloses a construction response method based on the water-bearing capacity assessment results of rock masses during drilling operations. First, the water-bearing capacity assessment results of the corresponding drilling sections are obtained. Then, based on these results, a matching relationship is established between construction response strategies corresponding to different water-bearing capacity levels. Finally, based on the matched construction response strategies, drilling parameters are dynamically adjusted, and construction measures corresponding to the current water-bearing capacity level of the rock mass are executed. This application directly converts the rock mass water-bearing capacity assessment results into corresponding construction response measures, eliminating manual experience-based judgment and intermediate decision-making processes. This significantly improves the timeliness and accuracy of the construction response, achieving dynamic control of water hazard risks throughout the drilling process and effectively reducing the probability of safety accidents such as water inrush, water surge, and borehole collapse. Furthermore, this invention reduces reliance on the experience of on-site personnel through standardized strategy matching and process adjustments, facilitating on-site implementation and operation.

This invention relates to the fields of coal mine safety production and the Internet of Things (IoT) and artificial intelligence (AI) technologies. It provides an AI-based IoT-based early warning method for water hazard risks in coal mine water exploration and drainage. The method is implemented based on the perception layer, network layer, and application layer architecture of a coal mine water exploration and drainage IoT management platform, and includes the following steps: S1: The data acquisition equipment in the IoT perception layer collects geophysical data from the underground exploration area of ​​the coal mine in real time. After being transmitted to the application layer via the network layer, the data is sequentially cleaned, denoised, and standardized to form a standardized geophysical dataset. The IoT enables graded early warning pushes both above and below ground, and links with PLCs to achieve emergency hard control of major hazards, ultimately forming a closed-loop management system for early warning and response, and achieving self-optimization of the AI ​​model and continuous data updates. This invention solves the problems of low identification efficiency, delayed early warning, and poor linkage in existing technologies. It provides accurate identification and rapid response, effectively reducing the risk of coal mine water inrush accidents, and is applicable to the entire process of water hazard control during underground water exploration and drainage in coal mines.

This invention relates to a method and system for evaluating mining safety based on karst water level monitoring of the coal seam floor. The method includes: collecting surface water level monitoring data and underground water pressure monitoring data; converting the surface water level monitoring data into surface water pressure data, correcting the underground water pressure monitoring data, and calculating the thickness of the aquitard from the coal seam floor to the roof of the carbonate-bearing aquifer; calculating the water inrush coefficient at each water level monitoring hole and each water pressure monitoring hole; drawing contour lines of the water inrush coefficient using the pan-kriging spatial data interpolation method; and delineating safe mining areas and water inrush hazard zones according to established evaluation principles. This invention takes the working face or mining area as the object, calculates the water inrush coefficient by establishing corrected water level and water pressure calculation formulas, and draws contour lines of the water inrush coefficient using the pan-kriging interpolation method, delineating the water inrush hazard zone and non-water inrush zone, which can provide a more reliable basis for evaluating the mining safety of coal seams affected by karst water hazards.

The coal mining face coal seam water inrush flow prediction method and system first clearly proposes and utilizes the physical law that the product of the specific aquifer water inrush flow and the fixed point water pressure is a constant in the stable water inrush state, simplifies the complex water inrush flow prediction problem to the interpretation of the water level data which is easy to monitor, and realizes the real-time and rapid inversion of the water inrush flow. The background parameters are obtained through the early water drainage test, and the dynamic correction is combined with the mining distance, the dynamic characteristics of the mine production are fully considered, and the accuracy and reliability of the inversion result are significantly improved, and the actual mine production is more fitted. The contribution of each main aquifer to the mine water inrush can be accurately quantified, which provides important scientific basis for the mine drainage system capacity determination, the accurate judgment of water disaster risk, the optimization of water protection coal mining scheme and the protection of mine water resources, and is suitable for wide use and popularization in the field of coal mine water prevention and control technology.

The application discloses a kind of complex geological conditions under frozen vertical shaft wellbore prevention and control water comprehensive prevention and control method, belong to coal mine wellbore construction safety technical field, including geological risk assessment before freezing construction, differential freezing design and ground pre-grouting timing control;Freezing wall intelligent regulation and interaction control in freezing construction stage;No water maintenance, delayed freezing and interlayer wall filling grouting in inner wall construction stage;And later forced thawing and perforation filling grouting, chamber section waterproof treatment and other whole-chain water control measures.This application constructs the comprehensive prevention and control system covering freezing design, excavation and lining construction, filling grouting whole link, can break down water disaster inducement from root, effectively solve the technical problems such as freezing wall performance degradation under complex geological conditions, chamber opening damage shaft integrity, construction process disturbance causes water gushing, significantly improve wellbore waterproof performance and construction efficiency, reduce comprehensive cost, applicable to deep complex hydrogeological conditions under frozen vertical shaft construction.

This invention discloses an integrated method for preventing water and heat hazards and utilizing geothermal energy in deep vertical shaft working faces, relating to the field of mining construction engineering. It can reduce the temperature of the surrounding rock within a range of 100m to 200m below the working face using negative energy consumption, while also effectively sealing off high-pressure water hazards in the deep surrounding rock. The method is carried out in the following steps: Step 1: Drilling and pipe layout at the working face; Step 2: Extraction of high-temperature water below the working face; Step 3: Surface heat extraction; Step 4: Groundwater reinjection and flushing; Step 5: Grout preparation; Step 6: Grouting stage. The final effect is to reduce the temperature of the surrounding rock within a range of 100m to 200m below the working face using negative energy consumption, while also effectively sealing off high-pressure water hazards in the deep surrounding rock.

Disclosed is a method, device, and storage medium for synchronous treatment of water hazard and subsidence. The method includes: exploring rock strata between a coal seam and a ground surface to determine basic data of the rock strata; in response to determining that the basic data meets a preset condition, setting a plurality of monitoring holes on the ground surface based on a drilling position; in response to determining that the coal seam is mined, performing water injection pressure monitoring on at least of the plurality of monitoring holes within a preset range at intervals of a preset time; in response to determining that a pressure change of the water injection pressure monitoring performed on any of the plurality of monitoring holes meets a first requirement, performing grouting on the any monitoring hole until a grouting pressure of the any monitoring hole reaches a second requirement.

The present application relates to the technical field of coal mining, and provides a coal mine resource collaborative mining and full-space destruction control method for surrounding rock in a mining area, comprising the following steps: determining the horizon of a low-position thick hard basic roof rock layer based on the structural parameters of a coal seam roof; determining the arrangement position and parameters of a fracturing borehole based on the horizon of the low-position thick hard basic roof rock layer; performing fracturing borehole construction, with the horizontal section of the fracturing borehole being located in the low-position thick hard basic roof rock layer and covering the entire length of the mining face in the strike direction; performing fracturing construction in the horizontal section to form fracturing cracks and controlling the development of the fracturing cracks to make the fracturing cracks penetrate the coal seam in the vertical direction; and after the fracturing construction is completed, extracting gas through the fracturing borehole. In this way, by using the fracturing of the low-position thick hard basic roof rock layer, the coal seam gas resource recovery, gas disaster control, coal mine roof / floor water disaster prevention and control, and surrounding rock control in the mining and excavation space can be simultaneously achieved, the disaster prevention and control engineering quantity is greatly reduced, the engineering cost is reduced, and the construction period is shortened.

The application discloses an open-pit coal mine slope curtain grouting water plugging and reinforcing process and belongs to the technical field of open-pit coal mine slope water damage control, and comprises the following steps: obtaining core parameters of a slope rock mass by using various survey methods, delineating a leakage zone, and constructing a three-dimensional geology-hydrology coupling model of the slope; arranging a water-approaching side prepositioned seepage control curtain hole, a middle main anti-seepage curtain core wall hole and a backwater side reinforcement curtain hole along a water inflow direction of underground water of the slope and parallel to the strike of the slope; sequentially completing grouting construction of the water-approaching side prepositioned seepage control curtain, the middle main anti-seepage curtain core wall and the backwater side reinforcement curtain; setting an early warning threshold based on real-time monitoring data of the whole grouting process and dynamically adjusting grouting parameters in real time; and arranging a reinforcement grouting hole according to a leakage defect area found by detection. The composite curtain structure, gradientized functional slurry, hierarchical dynamic pressure regulating process and whole-process closed-loop management and control system of the application can reduce cost and shorten construction period compared with a conventional curtain grouting process.

This application relates to the field of mine roof water control technology, specifically to a segmented treatment and guiding device for coal seam roof water hazards, including a first connecting part, a second connecting part, and a third connecting part. The two ends of the second connecting part are connected to the first connecting part and the third connecting part respectively through ball connectors. Multiple support components are provided on the outer side of the first connecting part and the third connecting part, and an injector is installed in the middle of the second connecting part. Adjustment components are provided on both sides of the injector. The adjustment components can be used to adjust the support components and can appropriately raise the position of the injector according to the progress of borehole erosion, so that the nozzle of the injector is closer to the working face, thereby accelerating the erosion rate of the borehole. Since the first connecting part, the second connecting part, and the third connecting part can slide inside the borehole, they can be moved to different positions to drill and drain multiple water-bearing bodies, thereby completing the drainage of multiple water-bearing bodies more efficiently and quickly.