Water disaster and settlement synchronous treatment method and device, electronic equipment and storage medium

Abstract

The invention provides a water disaster and settlement synchronous treatment method and device, electronic equipment and a storage medium, and the method comprises the steps: carrying out the exploration of a rock stratum between a coal seam and the earth surface, and determining the basic data of the rock stratum; wherein the rock stratum comprises a key stratum; in response to the condition that the basic data meets a set condition, a plurality of monitoring holes are formed in the earth surface on the basis of a drilling position; wherein the hole bottoms of the multiple monitoring holes are located on the side, away from the earth surface, of the key layer in the rock stratum; in response to mining of the coal seam, performing water injection pressure monitoring on at least one monitoring hole in a set range at set time intervals; wherein the set range is determined according to the mining position of the coal seam; and in response to the situation that the pressure change of the water injection pressure monitoring performed by any monitoring hole meets a first requirement, grouting is performed on any monitoring hole until the grouting pressure of any monitoring hole meets 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 increase in the intensity of coal resource mining, the water-conducting fracture zones formed in the mining process of some thick coal seams and shallow coal seams will directly develop to the top of the bedrock aquifer. In the absence of key water-blocking soil layers between the bedrock aquifer and the Quaternary aquifer in some mining areas, the shallow and water-rich Quaternary aquifer with ecological water supply significance directly replenishes mine water with the help of the water-conducting fracture zone, bringing serious water hazards and shallow ecological damage. At the same time, when such damage develops to the surface, it will cause severe deformations such as ground fissures and surface subsidence on the surface, which will cause irreversible ecological environmental damage such as land destruction, soil erosion, and vegetation attenuation. 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-mentioned problems.

[0004] Based on the above objectives, the present application provides a method for synchronously controlling water damage and sedimentation, comprising:

[0005] Exploring the rock layer between the coal seam and the ground surface to determine the basic data of the rock layer; wherein the rock layer includes a key layer;

[0006] 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;

[0007] 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;

[0008] In response to a pressure change in any monitoring hole during the water injection pressure monitoring satisfying a first requirement, grouting is performed on any monitoring hole until the grouting pressure of 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 comprises:

[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, thereby determining whether the basic data of the rock formation meets the set conditions.

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

[0014] The grouting pressure for 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 comprises a clay aquitard, wherein the clay aquitard is located between the Quaternary aquifer and the weathered bedrock aquifer;

[0019] The step of 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, the re-grouting of 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 step of setting 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 extension direction of the ground surface.

[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 a key layer;

[0027] The second module is used for setting 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 a side of the key layer in the rock formation away from the surface;

[0028] The third module is used for monitoring the water injection pressure of at least one monitoring hole within a set range at a set time interval in response to mining the coal seam; wherein the set range is determined according to the mining position 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 methods described above 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 hazard and settlement. 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, the monitoring holes within a certain range of the mining position are continuously monitored by water pressure to determine the orifice pressure. When the pressure changes to a certain extent, it means that uneven settlement has occurred. At the same time, the settlement 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 settlement and water hazard caused by coal seam mining are monitored during mining, and treatment is carried out as mining progresses. When uneven settlement occurs, timely grouting and filling can greatly reduce surface settlement 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying 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 structure of an electronic device 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 be understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements, objects or method steps appearing 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 can 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 filling mining can effectively achieve the suppression of the height of the development of water-conducting fracture zones and surface settlement during mining, but the underground filling mining process is relatively complicated, and mining and filling affect each other, which seriously reduces the recovery efficiency of the working face. In addition, for roof grouting to reduce settlement and water damage control, if the roof pre-grouting is carried out before coal seam mining, the grouting body will be disturbed and damaged again during coal seam mining, affecting the grouting effect; if the roof grouting is carried out when the coal seam roof settlement is stable, it will take about 40 to 60 days for the coal seam roof settlement to stabilize. During this period, on the one hand, it will cause a large amount of roof water resources to be lost and surface settlement will occur, affecting the local ecological environment, and 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 reduction as soon as possible during coal seam mining, while ensuring that the production efficiency of coal mines is not affected, 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 synchronously controlling water hazard and subsidence. The present application first explores the rock layer between the coal seam and the surface to determine whether water hazard prevention and control is needed based on the corresponding data. When it is determined that the conditions are met, a plurality of 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 continuously performed until the pressure is restored. In this way, the surface subsidence and water hazard 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 performed 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 exemplarily proposes a method for simultaneous control of water damage and sedimentation, which specifically includes the following steps.

[0044] Step 102, exploring the rock layer between the coal seam and the ground surface to determine basic data of the rock layer; wherein the rock layer includes a key layer.

[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., and these geological layers are regarded 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, and 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 is generally more water-rich. The key layer refers to the rock layer that controls the activity of the overlying rock layer in the mining area or all the rock layers on 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 the 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 the conditions are met, 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 below 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 survey of the mining area 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. According to the calculation results, it is determined whether the water-conducting fracture zone has developed into the weathered bedrock aquifer, and whether there is overflow 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 the aquifer through the overflow effect of the adjacent aquifer. When there is a large head difference between the aquifers, the phenomenon that the water in the aquifer with a high head is discharged through the weak permeable layer to the aquifer with a low head is called overflow.

[0049] Generally speaking, the mining area is composed of the surface layer, the Quaternary aquifer, the weathered bedrock aquifer, and the bedrock aquifer from top to bottom. Below the bedrock aquifer are the coal seams and goafs. During the mining process, as the goaf area continues to expand, the rock layer above the coal seam collapses in a certain order of collapse steps. According to the form of overburden damage, the damage zone is generally divided into three zones, namely the fracturing zone, the fissure zone, and the curved sinking zone. Among them, the fracturing zone and the fissure zone are collectively referred to as the water-conducting fissure zone. Due to the high-intensity mining of coal, the development height of the water-conducting fissure zone is increased, and the water-conducting fissure zone develops to the weathered bedrock aquifer, which causes the Quaternary aquifer to connect the weathered bedrock aquifer and the water-conducting fissure zone, causing groundwater to flow into the goaf, causing a sharp increase in the amount of water inflow in the mine. At the same time, for ecologically fragile areas, it is easy to cause environmental problems such as groundwater loss and land desertification. At the same time, due to high-intensity mining, the surface layer sinks and deforms. Furthermore, when it is determined based on basic data that the current rock strata include Quaternary aquifers and weathered bedrock aquifers, a water-conducting fracture zone is formed, and the water-conducting fracture zone extends into the weathered bedrock aquifer, and the Quaternary aquifer can overflow and recharge the weathered bedrock aquifer, it is determined that the current rock strata meet 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 it is determined 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 coal seam mining, and the bottom of these monitoring holes can be extended to the side of the key layer away from the surface. In some embodiments, a 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 with the drilling position, and the coal seam is mined along a certain direction. After that, the slurry diffusion radius is determined with the current drill bit position as the center of the circle. Finally, 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, and multiple monitoring holes are set on 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 lower rock layer of the key layer. In some embodiments, the monitoring hole can go deep into the main key layer, or it can go deep into the sub-key layer, and in order to improve the effect, it can generally go deep into the main key layer.

[0052] Furthermore, in some embodiments, the range of setting monitoring holes can also be combined with the advance impact range of mining advancement. Taking the current mining position as the starting point, a certain distance along the mining direction (the distance can be specifically set according to the specific scenario) is the advance impact range, for example, the range of 50 meters or 100 meters before the current mining position is the advance impact range. Finally, the range of setting monitoring holes can be determined based on the advance impact range and combined with the slurry diffusion radius.

[0053] In some embodiments, in order 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 extension direction of the ground surface after the monitoring hole is formed. In general flat ground scenarios, it can be simply understood as setting several branch holes at the bottom of the monitoring hole in the horizontal direction for convenient grouting. Two, four, etc. branch holes can be set according to the specific scene environment. The specific length of the branch hole can also be set according to the specific scene environment. That is, in some embodiments, the setting of multiple monitoring holes on the ground surface includes: at least one branch hole of a set length is set at the bottom of the multiple monitoring holes along the extension direction of 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 the coal seam mining process, as the working face advances, water injection pressure monitoring can be performed on at least one monitoring hole within the set range at set intervals (e.g., 15 minutes, 30 minutes, etc.), so as to determine whether uneven settlement has occurred in the rock formation through the orifice pressure reflected by the water injection pressure monitoring, and the settlement is also likely to cause water seepage and water damage problems in the surface water-rich layer. The set range here can be a range within a certain radius with the mining position as the center of the circle; it can also be a range between the mining position and the drilling position; it can also be a range between the mining position and the drilling position after combining the advanced influence range.

[0056] The water injection pressure monitoring here is the water pressure test, which uses a water pump or the deadweight 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 a certain period of time and the amount of pressure applied, the relative permeability of the rock mass is calculated and the degree of fracture development is understood.

[0057] In some specific scenarios, during mining, as the working face advances, water pressure tests are carried out at regular intervals on the boreholes within the advance influence range. Through indoor mechanical tests on relevant drilling data and other means, the thickness and burial depth of each aquifer and the physical and mechanical parameters of each rock layer on the top plate are obtained. According to on-site pumping tests, water chemical testing and analysis, it is determined that if no treatment is carried out, the Quaternary aquifer will have a hydraulic connection with the weathered bedrock aquifer, and the water in the Quaternary aquifer will overflow into the weathered bedrock aquifer. At the same time, it is determined that if no treatment is carried out, the water-conducting fracture zone will develop into the weathered bedrock aquifer, and the water-conducting fracture zone will become a water-conducting channel connecting the weathered bedrock aquifer and the Quaternary loose aquifer. Groundwater flows into the goaf along the water-conducting fracture zone, causing a large amount of water gushing in the goaf.

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

[0059] In this step, when the water injection pressure of any monitoring hole is monitored, if it is found that its pressure change meets the first requirement, it indicates that grouting is required for this monitoring hole to fill the settlement area formed in the rock formation to play a supporting and water-isolating effect. In some specific scenarios, the first requirement here may be that the orifice pressure drops to a certain extent. For example, when the orifice pressure drops rapidly in a short period of time and continues to maintain low pressure (or no pressure), it proves that the coal seam mining has disturbed the overlying rock formation, and a small space or water-conducting fracture zone has been formed 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, combined with the development process of overburden settlement, as the scope of the mining area expands, the uneven settlement position gradually develops upward. If grouting is implemented at the designed position and the space generated by the uneven settlement is filled in time, the 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 the overburden strata undergo uneven settlement, the pressure at that location will inevitably decrease. Therefore, before the working face is mined, boreholes are arranged and water pressure tests are carried out. When the pressure suddenly decreases, it is when the uneven settlement occurs, which is the time for grouting. In this way, the surface settlement can be greatly reduced through timely grouting and filling.

[0061] Afterwards, if Figure 2As shown, grouting can be performed 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, and 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 performed through branch holes, such as Figure 2 As shown, the two curved branch holes at the bottom of the monitoring hole can be used for grouting (first grouting). After that, 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 the 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, uninterrupted, large-flow, and 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 at the same time to verify the grouting effect. Among them, the grouting methods can include filling grouting, penetration grouting, compaction grouting, splitting grouting, etc.

[0062] Then, in order to further improve the water damage protection effect and enhance the waterproof and anti-penetration effect, in some embodiments, such as Figure 2 As shown, after the first grouting, grouting can be performed again at the interface between the Quaternary aquifer and the weathered bedrock aquifer. Grouting control and grouting position control can be performed by setting an inflatable stop plug, a pneumatic grouting plug, an inflatable plug, an airbag plug, etc. in the monitoring hole. 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 performed between the two layers. Here, the splitting grouting method can be used to perform a second grouting at the interface between the Quaternary aquifer and the weathered bedrock aquifer, allowing the slurry to diffuse in the horizontal direction of 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 path of recharge 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; after 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 position of the clay aquitard meets the requirements for re-grouting, and the structure of the layer is also more suitable for slurry injection, and if it is determined that there is a clay aquitard 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 also 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 monitoring hole includes: adjusting the grouting position to the clay aquitard.

[0064] Afterwards, similar to the first grouting, for the second grouting, in order to ensure the grouting effect, the grouting pressure for the second grouting is less than the vertical pressure from the grouting position to the surface, and greater than the horizontal pressure and the fracture initiation pressure at the grouting position. Generally, if the grouting pressure is higher than the fracture initiation pressure, it can be considered that the grouting is carried out by splitting grouting. At the same time, after the grouting pressure exceeds the fracture initiation pressure, the slurry preferentially splits and spreads along the weak fracture surface, and the weak cementation surface between the lower part of the Quaternary aquifer and the top of the weathered bedrock aquifer has the possibility of splitting grouting.

[0065] It can be seen from the above embodiments that the embodiments of the present application provide a method for synchronously controlling water hazard and subsidence. The present application first explores the rock layer between the coal seam and the surface to determine whether water hazard prevention and control is needed based on the corresponding data. When it is determined that the conditions are met, a plurality of monitoring holes extending below the key layer are set on the surface. During the coal seam mining process, the monitoring holes within a certain range of the mining position are continuously monitored by water pressure 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 hazard 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 management of mine roof water hazards and surface deformation while mining. 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 to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0068] It should be noted that the above describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that 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 or continuous order shown 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 embodiment methods, the present application also provides a device for synchronously controlling water damage and sedimentation.

[0070] refer to Figure 3 The water hazard and sedimentation synchronous control device comprises:

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

[0073] The third module 330 is used 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 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.

[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 used for:

[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, thereby determining 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 for 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 used for:

[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 comprises 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 used for:

[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 extension direction of the ground surface.

[0091] For the convenience of description, the above devices are described in terms of functions 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 repeated 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 executable on the processor, wherein when the processor executes the program, the method for simultaneous control of water hazard and sedimentation as described in any of the above embodiments is implemented.

[0094] Figure 4 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and 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 connected to each other through the bus 1050 in the device.

[0095] The processor 1010 can be implemented by 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 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

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

[0098] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0099] The bus 1050 includes a path that transmits 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 the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present 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 damage and sedimentation in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated 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, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method for simultaneous control of water damage and sedimentation as described in any of the above embodiments.

[0103] The computer-readable medium of this embodiment includes 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, modules of programs, 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 disk read-only memory (CD-ROM), digital versatile disk (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 damage 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-mentioned embodiments, the present application also provides a computer program product, which includes computer program instructions. In some embodiments, the computer program instructions can be executed by one or more processors of a computer so that the computer and / or the processor execute the method for synchronously controlling water damage and sedimentation. Corresponding to the execution subject corresponding to each step in each embodiment of the method for synchronously controlling water damage and sedimentation, the processor that executes the corresponding step can belong to the corresponding execution subject.

[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. In line with the concept 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, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present 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 application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use 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 the present application.

Claims

1. A method for synchronously controlling water damage and sedimentation, characterized in that: include: Exploring the rock layer between the coal seam and the ground surface to determine the basic data of the rock layer; wherein the rock layer includes a key layer; 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; 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 a pressure change in any monitoring hole during the water injection pressure monitoring meeting a first requirement, grouting is performed on any monitoring hole until the grouting pressure of 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 comprises: 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 and recharge the weathered bedrock aquifer, thereby determining 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 for 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, characterized in that: 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 also includes a clay aquitard, and the clay aquitard is located between the Quaternary aquifer and the weathered bedrock aquifer; The step of 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 of 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 arranged 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 extension direction of the ground surface.

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 a key layer; The second module is used for setting 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 a side of the key layer in the rock formation away from the surface; The third module is used for monitoring the water injection pressure of at least one monitoring hole within a set range at a set time interval in response to mining the coal seam; wherein the set range is determined according to the mining position 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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