Method, device, electronic equipment and storage medium for simultaneous control of water damage and sedimentation

Abstract

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

Description

Technical Field

[0001] The present application relates to the field of coal mining technology, and in particular to a method, device, electronic equipment and storage medium for synchronously controlling water hazard and subsidence. Background Art

[0002] With the increasing intensity of coal mining, the mining process in some thick and shallow coal seams can cause the formation of water-conducting fracture zones to develop directly to the top of the bedrock aquifer. In the absence of a critical impermeable soil layer between the bedrock aquifer and the Quaternary aquifer in some mining areas, the shallow, water-rich Quaternary aquifer, which is of great ecological significance, can directly replenish mine water through the water-conducting fracture zones, posing a serious threat of water disasters and shallow ecological damage. At the same time, when this damage develops to the surface, it will cause severe deformation such as ground fissures and surface subsidence, which in turn will cause irreversible ecological damage such as land destruction, soil erosion, and vegetation decline. Summary of the Invention

[0003] In view of this, the present application proposes a method, device, electronic device and storage medium for synchronously controlling water damage and sedimentation to solve or partially solve the above problems.

[0004] Based on the above objectives, this application provides a method for simultaneous control of water damage and sedimentation, including:

[0005] Exploring the rock strata between the coal seam and the ground surface to determine basic data of the rock strata, wherein the rock strata include key strata;

[0006] In response to the basic data satisfying a set condition, a plurality of monitoring holes are set on the ground surface based on the drilling position; wherein the bottoms of the plurality of monitoring holes are located on a side of the key layer in the rock formation away from the ground surface;

[0007] In response to mining of the coal seam, monitoring the water injection pressure of at least one monitoring hole within a set range at set intervals; wherein the set range is determined according to the mining location of the coal seam;

[0008] In response to a pressure change in the water injection pressure monitoring of any monitoring hole meeting a first requirement, grouting is performed on the any monitoring hole until the grouting pressure of the any monitoring hole reaches a second requirement.

[0009] In some exemplary embodiments, the rock formation further comprises a Quaternary aquifer and a weathered bedrock aquifer;

[0010] The step of responding to the basic data satisfying a set condition includes:

[0011] Determining whether the rock formation has formed a water-conducting fracture zone due to mining;

[0012] In response to the existence of the water-conducting fracture zone, it is determined whether the water-conducting fracture zone extends into the weathered bedrock aquifer, and whether the Quaternary aquifer is able to overflow recharge the weathered bedrock aquifer, so as to determine whether the basic data of the rock formation meets the set conditions.

[0013] In some exemplary embodiments, grouting any one of the monitoring holes includes:

[0014] The grouting pressure during grouting is less than the water-proof pressure from the grouting position to the mining position, and is greater than the vertical pressure from the grouting position to the ground surface.

[0015] In some exemplary embodiments, the rock formation further comprises a Quaternary aquifer and a weathered bedrock aquifer;

[0016] After the grouting pressure of any one of the monitoring holes reaches the second requirement, the method further comprises:

[0017] The grouting position of any one of the monitoring holes is adjusted, and grouting is performed again on the boundary between the Quaternary aquifer and the weathered bedrock aquifer.

[0018] In some exemplary embodiments, the rock formation further includes a clay aquitard, wherein the clay aquitard is located between the Quaternary aquifer and the weathered bedrock aquifer;

[0019] The adjusting the grouting height of any one of the monitoring holes comprises:

[0020] The grouting position is adjusted to the clayey aquitard.

[0021] In some exemplary embodiments, re-grouting the interface between the Quaternary aquifer and the weathered bedrock aquifer includes:

[0022] The grouting pressure for the second grouting is less than the vertical pressure from the grouting position to the ground surface, and greater than the horizontal pressure and the fracture initiation pressure at the grouting position.

[0023] In some exemplary embodiments, the setting of a plurality of monitoring holes on the ground surface includes:

[0024] At least one branch hole of a set length is arranged at the bottom of the plurality of monitoring holes along the surface extension direction.

[0025] Based on the same concept, the present application also provides a device for synchronously controlling water damage and sedimentation, comprising:

[0026] The first module is used to explore the rock layer between the coal seam and the ground surface and determine the basic data of the rock layer; wherein the rock layer includes the key layer;

[0027] A second module is configured to, in response to the basic data satisfying a set condition, set a plurality of monitoring holes on the surface based on the drilling position; wherein the bottoms of the plurality of monitoring holes are located on a side of the key layer in the rock formation away from the surface;

[0028] A third module is configured to monitor the water injection pressure of at least one monitoring hole within a set range at set intervals in response to mining of the coal seam; wherein the set range is determined according to the mining location of the coal seam;

[0029] The fourth module is used to perform grouting on any monitoring hole in response to the pressure change of the water injection pressure monitoring in any monitoring hole meeting the first requirement, until the grouting pressure of any monitoring hole reaches the second requirement.

[0030] Based on the same concept, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above methods when executing the program.

[0031] Based on the same concept, the present application also provides a non-transitory computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable a computer to implement any of the methods described above.

[0032] As can be seen from the above, the present application provides a method, device, electronic device and storage medium for simultaneous control of water hazards and subsidence. The present application first explores the rock layer between the coal seam and the surface to determine whether water hazard control is needed based on the corresponding data. When it is determined that the conditions are met, multiple monitoring holes extending below the key layer are set on the surface. During the coal seam mining process, water pressure monitoring is continuously performed on the monitoring holes within a certain range of the mining position to determine the orifice pressure. When the pressure changes to a certain extent, it means that uneven subsidence has occurred. At the same time, the subsidence is likely to cause water seepage problems in the surface water-rich layer. At this time, water pressure is stopped and grouting is performed instead, and pressure monitoring is continued until the pressure is restored. In this way, the surface subsidence and water hazards caused by coal seam mining are monitored during mining, and treatment is carried out as mining progresses. When uneven subsidence occurs, timely grouting and filling are greatly reduced. At the same time, because drilling monitoring is carried out on the surface, the construction difficulty and control cost are reduced, and the impact on mining efficiency is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 A flowchart of an exemplary method provided in an embodiment of the present application.

[0035] Figure 2 A schematic diagram of grouting using monitoring holes provided in an embodiment of the present application.

[0036] Figure 3 A schematic diagram of the structure of an exemplary device provided in an embodiment of the present application.

[0037] Figure 4 A schematic diagram of the electronic device structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of this specification more clear, this specification is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0039] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements, objects or method steps that appear before the word cover the elements, objects or method steps listed after the word and their equivalents, without excluding other elements, objects or method steps. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0040] As described in the background technology section, in some embodiments, underground backfill mining can effectively achieve the suppression of the height of the development of water-conducting fracture zones and surface subsidence while mining and treating them simultaneously. However, the underground backfill mining process is relatively complicated, and mining and backfilling affect each other, which seriously reduces the recovery efficiency of the working face. In addition, for roof grouting to reduce subsidence and control water hazards, if roof pre-grouting is performed before coal seam mining, the grouting body will be disturbed and damaged again during coal seam mining, affecting the grouting effect; if roof grouting is performed when the coal seam roof subsidence is stable, it will take about 40 to 60 days for the coal seam roof subsidence to stabilize. During this period, on the one hand, it will cause a large amount of roof water resources to be lost and surface subsidence will occur, affecting the local ecological environment. On the other hand, it will also bring challenges to coal mine water hazard prevention and control and safe mining. Therefore, how to achieve coordinated management of coal seam roof water hazard prevention and control and surface subsidence as soon as possible during coal seam mining, without affecting the production efficiency of coal mines, and minimize the impact of coal seam mining on the ecological environment, is an urgent problem that needs to be solved in the current process of coal mines to achieve safe and green mining.

[0041] In combination with the above-mentioned actual situation, the embodiment of the present application provides a method for simultaneous control of water hazards and subsidence. The present application first explores the rock layer between the coal seam and the surface to determine whether water hazard control is needed based on the corresponding data. When it is determined that the conditions are met, multiple monitoring holes extending below the key layer are set on the surface. During the coal seam mining process, water pressure monitoring is continuously performed on the monitoring holes within a certain range of the mining position to determine the orifice pressure. When the pressure changes to a certain extent, it means that uneven subsidence has occurred. At the same time, the subsidence is likely to cause water seepage problems in the water-rich surface layer. At this time, water pressure is stopped and grouting is performed instead, and pressure monitoring is continued until the pressure is restored. In this way, the surface subsidence and water hazards caused by coal seam mining are monitored during mining, and treatment is carried out as mining progresses. When uneven subsidence occurs, timely grouting and filling are used to greatly reduce surface subsidence and groundwater loss. At the same time, because drilling monitoring is carried out on the surface, the construction difficulty and control cost are reduced, and the impact on mining efficiency is relatively small.

[0042] Figure 1 A flow chart of an exemplary method provided in an embodiment of the present application is shown.

[0043] like Figure 1 As shown, the embodiment of the present application exemplifies a method for simultaneous control of water disasters and sedimentation, which specifically includes the following steps.

[0044] Step 102: Exploring the rock strata between the coal seam and the ground surface to determine basic data of the rock strata; wherein the rock strata include key strata.

[0045] In this step, there may be multiple geological layers between the coal seam and the surface, such as the Quaternary aquifer, weathered bedrock layer, key layer, bedrock layer, etc., all of which are considered as rock layers here. Afterwards, geological exploration can be carried out on these rock layers to determine the basic information of these rock layers, such as which rock layers are specifically included, as well as the depth, shape, water content, hardness, etc. of different rock layers at various locations. This information can be considered as the basic data of the rock layers. Here, the Quaternary aquifer refers to the aquifer in the Quaternary sedimentary strata, which is equivalent to shallow groundwater and generally has high water richness. The key layer refers to the rock layer that controls the movement of the overlying rock layer in the mining area or all the rock layers up to the surface. Generally, the key layer can be divided into the main key layer and the sub-key layer. The main method is to distinguish whether a key layer is the main key layer or the sub-key layer by calculating the corresponding mechanical parameters to see whether the load and breaking distance exceed a certain threshold.

[0046] Step 104 , in response to the basic data satisfying the set conditions, a plurality of monitoring holes are set on the surface based on the drilling position; wherein the bottoms of the plurality of monitoring holes are located on a side of the key layer in the rock formation away from the surface.

[0047] In this step, after determining the basic data of the rock formation, it is necessary to determine whether the current coal mining environment is suitable for implementing the water hazard and subsidence simultaneous control method of this application, that is, whether it meets the set conditions. If it meets the conditions, multiple monitoring holes can be set within a certain range based on the location of the coal mining drilling. The cross-sectional size of the monitoring hole can be specifically set according to the specific scenario. The monitoring hole needs to go deep into the bottom of the key layer (that is, the side away from the surface), so that when a problem is found through the monitoring hole, grouting and other operations can be performed below the key layer through the monitoring hole to support and waterproof the key layer.

[0048] In some embodiments, stratigraphic surveys of mining areas may include surveying and calculating the location, thickness, groundwater distribution, and main key layer location of the Quaternary aquifer, weathered bedrock aquifer, bedrock aquifer, and water-conducting fracture zone located below the surface layer and above the coal seam. Based on the calculation results, it is determined whether the water-conducting fracture zone has developed into the weathered bedrock aquifer, and whether there is leakage recharge from the Quaternary aquifer to the weathered bedrock aquifer, so as to judge whether the current rock formation environment is suitable for implementing the water hazard and sedimentation simultaneous control method of the present application. Among them, the weathered bedrock aquifer is generally located below the Quaternary aquifer. Leakage recharge refers to the recharge of an aquifer through the leakage effect of an adjacent aquifer. When there is a large head difference between aquifers, the phenomenon that water in the aquifer with a high head is discharged through a weak permeable layer to the aquifer with a low head is called leakage.

[0049] Generally speaking, a mining area consists of the surface layer, the Quaternary aquifer, the weathered bedrock aquifer, and the bedrock aquifer, from top to bottom. Beneath the bedrock aquifer are the coal seam and the goaf. During mining, as the goaf expands, the rock strata above the coal seam collapse in a specific order of step-by-step collapse. Based on the type of overburden failure, the damage zone is generally divided into three zones: the fracturing zone, the fracture zone, and the curved subsidence zone. The fracturing and fracture zones are collectively referred to as the water-conducting fracture zone. Intensive coal mining increases the height of the water-conducting fracture zone, allowing it to develop into the weathered bedrock aquifer. This, in turn, causes the Quaternary aquifer to connect with the weathered bedrock aquifer and the water-conducting fracture zone, allowing groundwater to intrude into the goaf, dramatically increasing mine water inflow. This, in turn, can lead to environmental problems such as groundwater loss and desertification in ecologically fragile areas. Furthermore, intensive mining causes the surface layer to sink and deform. Furthermore, when it is determined based on basic data that the current rock formation includes a Quaternary aquifer and a weathered bedrock aquifer, a water-conducting fracture zone is formed, and the water-conducting fracture zone extends into the weathered bedrock aquifer, and the Quaternary aquifer is able to overflow and recharge the weathered bedrock aquifer, it is determined that the current rock formation meets the set conditions.

[0050] That is, in some embodiments, the rock formation also includes a Quaternary aquifer and a weathered bedrock aquifer; the response to the basic data satisfying the set conditions includes: determining whether the rock formation has formed a water-conducting fracture zone due to mining; in response to the existence of the water-conducting fracture zone, determining whether the water-conducting fracture zone extends into the weathered bedrock aquifer, and the Quaternary aquifer is able to overflow and recharge the weathered bedrock aquifer, so as to determine whether the basic data of the rock formation satisfies the set conditions.

[0051] After determining that the above set conditions are met, multiple monitoring holes can be set on the surface within a certain range based on the drilling position of the coal seam, and the bottoms of these monitoring holes can be extended to the side of the key layer away from the surface. In some embodiments, the certain range can be determined based on the current drill bit position and the slurry diffusion radius of the grouting that may be performed later. For example, the current drill bit position generally starts from the drilling position, and the coal seam is mined along a certain direction. The slurry diffusion radius is then determined with the current drill bit position as the center of the circle. Ultimately, a strip area with the drilling position as the starting point and the slurry diffusion diameter as the width may be formed on the surface. Multiple monitoring holes are set in this strip area. That is, before mining, multiple monitoring holes can be evenly arranged on the surface of the working face according to the slurry diffusion radius, and the final hole layer of the multiple monitoring holes is the rock layer below the key layer. In some embodiments, the monitoring holes can be deep below the main key layer, or deep below the sub-key layer. In order to improve the effect, they can generally be deep below the main key layer.

[0052] Furthermore, in some embodiments, the range of monitoring holes can be combined with the advance impact range of mining advancement. Starting from the current mining position, a certain distance along the mining direction (this distance can be set according to the specific scenario) is the advance impact range. For example, the range 50 meters or 100 meters in front of the current mining position is the advance impact range. Ultimately, the range of monitoring holes can be determined based on the advance impact range and the slurry diffusion radius.

[0053] In some embodiments, to facilitate the subsequent grouting process through the monitoring hole, at least one branch hole can be set at the bottom of the monitoring hole along the direction extending from the ground surface after the monitoring hole is formed. In a general flat ground scenario, this can be simply understood as setting several branch holes at the bottom of the monitoring hole in a horizontal direction to facilitate grouting. Two, four, etc. branch holes can be set according to the specific scenario environment. The specific length of the branch holes can also be set according to the specific scenario environment. That is, in some embodiments, setting multiple monitoring holes on the ground surface includes: setting at least one branch hole of a set length at the bottom of the multiple monitoring holes along the direction extending from the ground surface.

[0054] Step 106 , in response to mining of the coal seam, monitoring the water injection pressure of at least one monitoring hole within a set range at set intervals; wherein the set range is determined according to the mining location of the coal seam.

[0055] In this step, during coal seam mining, as the working face advances, water injection pressure monitoring can be performed on at least one monitoring hole within a set range at set intervals (e.g., 15 minutes, 30 minutes, etc.). This monitoring of the water injection pressure reflects the orifice pressure and determines whether uneven subsidence has occurred in the rock formation. This subsidence is also likely to cause water seepage damage in surface aquifers. The set range can be a range within a certain radius with the mining location as the center; it can also be the range between the mining location and the drilling location; or it can be the range between the mining location and the drilling location combined with the advance impact range.

[0056] The water injection pressure monitoring here is the water pressure test, which uses a water pump or the weight of a water column to pressurize clean water into the test section of the borehole. Based on the relationship between the amount of water pressed in and the amount of pressure applied within a certain period of time, the relative permeability of the rock mass and the degree of fracture development are calculated.

[0057] In some specific scenarios, as the working face advances during mining, water pressure tests are conducted at regular intervals on boreholes within the advance impact range. Through laboratory mechanical testing and other methods using relevant borehole data, the thickness and burial depth of each aquifer, as well as the physical and mechanical parameters of each roof rock stratum, are determined. Based on on-site pumping tests and hydrochemical analysis, it was determined that without treatment, the Quaternary aquifer would be hydraulically connected to the weathered bedrock aquifer, and water within the Quaternary aquifer would overflow into the weathered bedrock aquifer. Furthermore, it was determined that without treatment, water-conducting fracture zones would develop within the weathered bedrock aquifer, forming water conduits connecting the air-conducting bedrock aquifer and the unconsolidated Quaternary aquifer. Groundwater would flow along these fracture zones into the goaf, causing significant water inflow from the goaf.

[0058] Step 108 : In response to a pressure change in any monitoring hole during the water injection pressure monitoring meeting a first requirement, grouting is performed on the any monitoring hole until the grouting pressure of the any monitoring hole reaches a second requirement.

[0059] In this step, when monitoring the water injection pressure of any monitoring hole, if it is found that its pressure change meets the first requirement, it indicates that grouting is needed for this monitoring hole to fill the settlement area formed in the rock formation to play a supporting and water-isolating role. In some specific scenarios, the first requirement here may be that the orifice pressure drops to a certain level. For example, when the orifice pressure drops rapidly in a short period of time and continues to maintain a low pressure (or no pressure), it proves that the coal seam mining has disturbed the overlying rock formation and formed a small space or water-conducting fracture zone in the lower part of the key layer (where the monitoring hole penetrates), that is, uneven settlement has occurred. At this time, water pressure and monitoring can be stopped, and filling operations can be carried out instead.

[0060] Specifically, in combination with the development process of overburden settlement, as the scope of the mining area expands, the position of uneven settlement gradually develops upward. If grouting is implemented at the designed position and the space generated by uneven settlement is filled in time, its settlement can be prevented from further developing upward, thereby slowing down the settlement of the overburden and the surface, and reducing and eliminating its hazards. When uneven settlement occurs in the overburden, it will inevitably lead to a decrease in pressure at that location. Therefore, before the working face is mined, a borehole is laid out and a water pressure test is carried out. When the pressure suddenly drops, it means that uneven settlement has occurred, which is the time for grouting. In this way, surface settlement can be greatly reduced through timely grouting and filling.

[0061] Afterwards, if Figure 2As shown, grouting can be carried out through the monitoring hole. The slurry for grouting can be set according to the specific scenario. In some embodiments, clay cement slurry can be used for grouting. The slurry volume concentration can be adjusted appropriately according to the actual grouting situation. It does not contain toxic heavy metals such as iron and mercury, and will not cause water pollution to the target layer of Quaternary water conservation. In some more specific scenarios, grouting can also be carried out through branch holes, such as Figure 2 As shown, grouting (first grouting) can be performed using the two curved branch holes at the bottom of the monitoring hole. Afterwards, the grouting pressure can be monitored at all times. When it reaches a certain requirement (second requirement), the grouting can be considered completed. The second requirement here can be that the grouting pressure reaches a set threshold and lasts for a certain time; or the current grouting pressure reaches the water injection pressure before mining and lasts for a certain time, etc. Finally, for the grouting pressure during the grouting process, in order to ensure the grouting effect, the grouting pressure for grouting can be less than the water-blocking pressure from the grouting position to the mining position, and greater than the vertical pressure from the grouting position to the surface. That is, grouting can be performed by using continuous, large-flow, high-concentration slurry, during which the grouting pressure can be adjusted to restore the borehole pressure to the borehole pressure before mining. In addition, the surface settlement can be monitored simultaneously to verify the grouting effect. Among them, the grouting methods can include filling grouting, penetration grouting, compaction grouting and splitting grouting, etc.

[0062] Afterwards, in order to further improve the water damage protection effect and enhance the waterproof and anti-permeability effect, in some embodiments, such as Figure 2 As shown, after the first grouting, a second grouting can be carried out at the interface between the Quaternary aquifer and the weathered bedrock aquifer. Grouting control and grouting position control can be achieved by setting inflatable grouting plugs, air pressure grouting plugs, air plugs, airbag plugs, etc. in the monitoring holes. The scope of the Quaternary aquifer and the weathered bedrock aquifer can be determined through basic data, and then the interface between the two layers can be determined. Finally, after the first grouting, a second grouting can be carried out between the two layers. Here, the splitting grouting method can be used to carry out a second grouting at the interface between the Quaternary aquifer and the weathered bedrock aquifer, allowing the slurry to diffuse horizontally at the interface, and transforming a water-blocking layer between the lower part of the Quaternary aquifer and the top of the weathered bedrock aquifer. The function is to block water and cut off the recharge path from the Quaternary aquifer to the weathered bedrock aquifer. That is, in some embodiments, the rock formation also includes a Quaternary aquifer and a weathered bedrock aquifer; until the grouting pressure of any one of the monitoring holes reaches the second requirement, the method also includes: adjusting the grouting position of any one of the monitoring holes, and re-grouting the boundary between the Quaternary aquifer and the weathered bedrock aquifer.

[0063] In some more specific scenarios, if it is determined based on basic data that a clay aquitard is formed between the Quaternary aquifer and the weathered bedrock aquifer, the location of the clay aquitard meets the requirements for secondary grouting, and the structure of the layer is also relatively suitable for slurry injection, and if it is determined that a clay aquitard exists between the Quaternary aquifer and the weathered bedrock aquifer, a second grouting can be performed in the layer. That is, in some embodiments, the rock formation further includes a clay aquitard, and the clay aquitard is located between the Quaternary aquifer and the weathered bedrock aquifer; adjusting the grouting height of any one of the monitoring holes includes adjusting the grouting position to the clay aquitard.

[0064] Afterward, similar to the first grouting, the second grouting pressure, to ensure grouting effectiveness, is lower than the vertical pressure from the grouting location to the surface, but higher than the horizontal pressure and the fracture initiation pressure at the grouting location. Generally, grouting pressures higher than the fracture initiation pressure indicate grouting via splitting. Furthermore, when the grouting pressure exceeds the fracture initiation pressure, the slurry preferentially splits and spreads along weak fracture surfaces. The weak cementation surface between the lower Quaternary aquifer and the top of the weathered bedrock aquifer offers the potential for splitting grouting.

[0065] It can be seen from the above embodiments that the embodiments of the present application provide a method for simultaneous control of water hazards and subsidence. The present application first explores the rock layer between the coal seam and the surface to determine whether water hazard control is needed based on the corresponding data. When it is determined that the conditions are met, multiple monitoring holes extending below the key layer are set on the surface. During the coal seam mining process, water pressure monitoring is continuously performed on the monitoring holes within a certain range of the mining position to determine the orifice pressure. When the pressure changes to a certain extent, it means that uneven subsidence has occurred. At the same time, the subsidence is likely to cause water seepage problems in the water-rich surface layer. At this time, water pressure is stopped and grouting is performed instead, and pressure monitoring is continued until the pressure is restored. In this way, the surface subsidence and water hazards caused by coal seam mining are monitored during mining, and treatment is carried out as mining progresses. When uneven subsidence occurs, timely grouting and filling can greatly reduce surface subsidence and groundwater loss. At the same time, because drilling monitoring is carried out on the surface, the construction difficulty and control cost are reduced, and the impact on mining efficiency is relatively small.

[0066] In a more specific scenario, this application mainly focuses on the problem of how to coordinate the management of roof water conservation and surface subsidence reduction in some mining areas without affecting the normal production of coal mines. It can integrate two different grouting operations of the same slurry material at different locations to carry out comprehensive and effective mining and treatment of mine roof water hazards and surface deformation. Compared with underground filling management, it can simultaneously achieve roof water conservation and surface subsidence reduction, and reduce the management cost.

[0067] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of the embodiment of the present application can also be applied in a distributed scenario and completed by multiple devices working together. In the case of such a distributed scenario, one of the multiple devices may only perform one or more steps of the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the method described.

[0068] It should be noted that the above description is of specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order shown or the sequential order to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0069] Based on the same concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides a device for synchronously controlling water damage and sedimentation.

[0070] refer to Figure 3 The device for synchronously controlling water damage and sedimentation comprises:

[0071] The first module 310 is used to explore the rock layer between the coal seam and the ground surface and determine the basic data of the rock layer; wherein the rock layer includes the key layer.

[0072] The second module 320 is used to set a plurality of monitoring holes on the surface based on the drilling position in response to the basic data satisfying the set conditions; wherein the bottoms of the plurality of monitoring holes are located on the side of the key layer in the rock formation away from the surface.

[0073] The third module 330 is configured to monitor the water injection pressure of at least one monitoring hole within a set range at set intervals in response to mining of the coal seam; wherein the set range is determined according to the mining location of the coal seam.

[0074] The fourth module 340 is configured to perform grouting on any monitoring hole in response to the pressure change of the water injection pressure monitoring in any monitoring hole meeting the first requirement, until the grouting pressure of any monitoring hole reaches the second requirement.

[0075] In some exemplary embodiments, the rock formation further comprises a Quaternary aquifer and a weathered bedrock aquifer;

[0076] The second module 320 is further configured to:

[0077] Determining whether the rock formation has formed a water-conducting fracture zone due to mining;

[0078] In response to the existence of the water-conducting fracture zone, it is determined whether the water-conducting fracture zone extends into the weathered bedrock aquifer, and whether the Quaternary aquifer is able to overflow recharge the weathered bedrock aquifer, so as to determine whether the basic data of the rock formation meets the set conditions.

[0079] In some exemplary embodiments, the fourth module 340 is further configured to:

[0080] The grouting pressure during grouting is less than the water-proof pressure from the grouting position to the mining position, and is greater than the vertical pressure from the grouting position to the ground surface.

[0081] In some exemplary embodiments, the rock formation further comprises a Quaternary aquifer and a weathered bedrock aquifer;

[0082] The fourth module 340 is further configured to:

[0083] The grouting position of any one of the monitoring holes is adjusted, and grouting is performed again on the boundary between the Quaternary aquifer and the weathered bedrock aquifer.

[0084] In some exemplary embodiments, the rock formation further includes a clay aquitard, wherein the clay aquitard is located between the Quaternary aquifer and the weathered bedrock aquifer;

[0085] The fourth module 340 is further configured to:

[0086] The grouting position is adjusted to the clayey aquitard.

[0087] In some exemplary embodiments, the fourth module 340 is further configured to:

[0088] The grouting pressure for the second grouting is less than the vertical pressure from the grouting position to the ground surface, and greater than the horizontal pressure and the fracture initiation pressure at the grouting position.

[0089] In some exemplary embodiments, the second module 320 is further configured to:

[0090] At least one branch hole of a set length is arranged at the bottom of the plurality of monitoring holes along the surface extension direction.

[0091] For the convenience of description, the above devices are described as being functionally divided into various modules. Of course, when implementing the embodiments of the present application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0092] The device of the above embodiment is used to implement the corresponding method for simultaneous control of water hazard and sedimentation in the above embodiment, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0093] Based on the same concept, corresponding to any of the above-mentioned embodiments, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and runnable on the processor. When the processor executes the program, it implements the method for simultaneous control of water hazards and sedimentation as described in any of the above embodiments.

[0094] Figure 4 10 is a schematic diagram showing a more specific hardware structure of an electronic device provided in this embodiment. The device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are communicatively connected to each other within the device via the bus 1050.

[0095] The processor 1010 can be implemented using a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0096] The memory 1020 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage devices, dynamic storage devices, etc. The memory 1020 can store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 1020 and is called and executed by the processor 1010.

[0097] The input / output interface 1030 is used to connect an input / output module to implement information input and output. The input / output module can be configured as a component in the device (not shown in the figure) or can be externally connected to the device to provide corresponding functions. Input devices may include a keyboard, mouse, touch screen, microphone, various sensors, etc., and output devices may include a display, speaker, vibrator, indicator light, etc.

[0098] The communication interface 1040 is used to connect to a communication module (not shown) to enable communication between the device and other devices. The communication module can communicate via a wired method (such as USB, network cable, etc.) or a wireless method (such as mobile network, WiFi, Bluetooth, etc.).

[0099] The bus 1050 comprises a path for transmitting information between the various components of the device (eg, the processor 1010 , the memory 1020 , the input / output interface 1030 , and the communication interface 1040 ).

[0100] It should be noted that although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040, and the bus 1050, in a specific implementation, the device may also include other components necessary for normal operation. In addition, it will be understood by those skilled in the art that the above device may only include the components necessary to implement the embodiments of this specification, and does not necessarily include all the components shown in the figure.

[0101] The electronic device of the above embodiment is used to implement the corresponding method for synchronously controlling water hazard and sedimentation in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0102] Based on the same concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable the computer to execute the method for simultaneous control of water disasters and sedimentation as described in any of the above embodiments.

[0103] The computer-readable media of this embodiment include permanent and non-permanent, removable and non-removable media, and information storage can be achieved by any method or technology. Information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0104] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the method for simultaneous control of water disasters and sedimentation as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0105] Based on the same concept, corresponding to any of the above-described embodiments and methods, this application also provides a computer program product comprising computer program instructions. In some embodiments, the computer program instructions can be executed by one or more processors of a computer to cause the computer and / or the processor to perform the method for simultaneous flood control and sedimentation. For each step in each embodiment of the method for simultaneous flood control and sedimentation, the processor executing the corresponding step can be a member of the corresponding execution entity.

[0106] The computer program product of the above embodiment is used to enable the computer and / or the processor to execute the method for simultaneous control of water hazard and sedimentation as described in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0107] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0108] In addition, for simplicity of description and discussion, and in order not to make the embodiment of the application difficult to understand, the known power supply / ground connection with integrated circuit (IC) chip and other components may or may not be shown in the accompanying drawings provided. In addition, the device can be shown in the form of a block diagram to avoid making the embodiment of the application difficult to understand, and this also takes into account the following fact, that is, the details of the embodiment of these block diagram devices are highly dependent on the platform to be implemented in the embodiment of the application (that is, these details should be fully within the scope of understanding of those skilled in the art). When specific details (for example, circuit) are set forth to describe exemplary embodiments of the application, it will be apparent to those skilled in the art that the embodiment of the application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0109] Although the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may utilize the embodiments discussed.

[0110] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. A method for simultaneous control of water damage and sedimentation, characterized in that: include: Exploring the rock strata between the coal seam and the ground surface to determine basic data of the rock strata, wherein the rock strata include key strata; In response to the basic data satisfying a set condition, a plurality of monitoring holes are set on the ground surface based on the drilling position; wherein the bottoms of the plurality of monitoring holes are located on a side of the key layer in the rock formation away from the ground surface; In response to mining of the coal seam, monitoring the water injection pressure of at least one monitoring hole within a set range at set intervals; wherein the set range is determined according to the mining location of the coal seam; In response to a pressure change in the water injection pressure monitoring of any monitoring hole meeting a first requirement, grouting is performed on the any monitoring hole until the grouting pressure of the any monitoring hole reaches a second requirement.

2. The method according to claim 1, characterized in that The rock formations also include Quaternary aquifers and weathered bedrock aquifers; The step of responding to the basic data satisfying a set condition includes: Determining whether the rock formation has formed a water-conducting fracture zone due to mining; In response to the existence of the water-conducting fracture zone, it is determined whether the water-conducting fracture zone extends into the weathered bedrock aquifer, and whether the Quaternary aquifer is able to overflow recharge the weathered bedrock aquifer, so as to determine whether the basic data of the rock formation meets the set conditions.

3. The method according to claim 1, characterized in that The grouting of any one of the monitoring holes comprises: The grouting pressure during grouting is less than the water-proof pressure from the grouting position to the mining position, and is greater than the vertical pressure from the grouting position to the ground surface.

4. The method according to claim 1, wherein The rock formations also include Quaternary aquifers and weathered bedrock aquifers; After the grouting pressure of any one of the monitoring holes reaches the second requirement, the method further comprises: The grouting position of any one of the monitoring holes is adjusted, and grouting is performed again on the boundary between the Quaternary aquifer and the weathered bedrock aquifer.

5. The method according to claim 4, characterized in that The rock formation further includes a clay aquitard, and the clay aquitard is located between the Quaternary aquifer and the weathered bedrock aquifer; The adjusting the grouting height of any one of the monitoring holes comprises: The grouting position is adjusted to the clayey aquitard.

6. The method according to claim 4, characterized in that The re-grouting at the interface between the Quaternary aquifer and the weathered bedrock aquifer includes: The grouting pressure for the second grouting is less than the vertical pressure from the grouting position to the ground surface, and greater than the horizontal pressure and the fracture initiation pressure at the grouting position.

7. The method according to claim 1, characterized in that The multiple monitoring holes are set on the surface, including: At least one branch hole of a set length is arranged at the bottom of the plurality of monitoring holes along the surface extension direction.

8. A device for synchronously controlling water damage and sedimentation, characterized in that: include: The first module is used to explore the rock layer between the coal seam and the ground surface and determine the basic data of the rock layer; wherein the rock layer includes the key layer; A second module is configured to, in response to the basic data satisfying a set condition, set a plurality of monitoring holes on the surface based on the drilling position; wherein the bottoms of the plurality of monitoring holes are located on a side of the key layer in the rock formation away from the surface; A third module is configured to monitor the water injection pressure of at least one monitoring hole within a set range at set intervals in response to mining of the coal seam; wherein the set range is determined according to the mining location of the coal seam; The fourth module is used to perform grouting on any monitoring hole in response to the pressure change of the water injection pressure monitoring in any monitoring hole meeting the first requirement, until the grouting pressure of any monitoring hole reaches the second requirement.

9. An electronic device, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method according to any one of claims 1 to 7 is implemented.

10. A non-transitory computer-readable storage medium, characterized in that The non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to implement the method according to any one of claims 1 to 7.

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