Methods, devices, electronic equipment, products and media for measuring mine water inflow

Abstract

The present invention provides a method, device, electronic equipment, product and medium for measuring water inflow in a mine, belonging to the field of geological exploration technology. The method comprises: when mining within the Nth collapse step, based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the next adjacent water level observation hole, determining the predicted water inflow of the current collapse step to obtain the predicted water inflow of each collapse step; based on the sum of the predicted water inflows of all collapse steps, obtaining the total water inflow of the mining working face. The present invention determines the predicted water inflow of each collapse step, and realizes the accurate calculation of the predicted water inflow of each collapse step. Based on the sum of the predicted water inflow of each collapse step, the total water inflow of the mining working face is determined, taking into account the dynamic changes in water level caused by the regular collapse change characteristics of the roof overburden after mining of the mining working face, thereby improving the accuracy of determining the total water inflow of the mining working face.

Description

Technical Field

[0001] The present invention relates to the field of geological exploration technology, and in particular to a method, device, electronic equipment and storage medium for measuring water inflow in a mine. Background Art

[0002] The measurement of water inflow is an important part of mine water prevention and control work. It is also the basis for the mining design department to select drainage equipment such as water pumps, motors, and drainage pipes. It is also the main basis for designing water tanks, pump rooms and other water prevention and control work. The accuracy of mine water inflow prediction is directly related to the safety of mine production.

[0003] Methods for predicting mine water inflow include numerical simulation, seepage analysis, and analogy. However, due to complex mining conditions, rapid advancements in mining technology, and uncertainties such as mine extension, these predictions are often limited. Generally, the accuracy of mine water inflow predictions is closely related to the selected calculation method, parameter selection, and the compatibility of the calculation method and parameters. Furthermore, accurate predictions must be combined with actual mining site information.

[0004] In the existing method for calculating the amount of water inflow in a mine, the determination of the depth of the drainage water level is not accurate, resulting in inaccurate calculation of the amount of water inflow in the mine. Summary of the Invention

[0005] The present invention provides a method, device, electronic equipment, product and medium for measuring the amount of water inflow in a mine, which are used to solve the defect of inaccurate calculation of the amount of water inflow in the prior art and improve the accuracy of calculating the amount of water inflow in a mine.

[0006] In the first aspect, the present invention provides a method for measuring the water inflow of a mine, comprising: when mining within the Nth collapse step in the mining direction, based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the next adjacent water level observation hole, determining the predicted water inflow of the current collapse step to obtain the predicted water inflow of each collapse step, the drainage elevation of the water level observation hole being the water level height of the water level observation hole after it drops to a stable state during mining, the next adjacent water level observation hole being set in the next collapse step adjacent to the current collapse step, and the predicted water inflow of the first collapse step being 0; based on the sum of the predicted water inflows of all collapse steps, obtaining the total water inflow of the mining working face.

[0007] According to a method for measuring water inflow in a mine provided by the present invention, the water level observation hole of the current collapse step is the Nth water level observation hole, the next water level observation hole is the N-1th water level observation hole, and the current collapse step is the Nth collapse step. Based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the adjacent next water level observation hole, the predicted water inflow of the current collapse step is determined, including: obtaining the Nth drainage water level drop based on the difference between the drainage elevation of the Nth water level observation hole and the drainage elevation of the N-1th water level observation hole; and determining the predicted water inflow of the Nth collapse step based on the Nth drainage water level drop, the drainage elevation of the Nth water level observation hole and a preset parameter set.

[0008] According to a method for measuring mine water inflow provided by the present invention, a preset parameter set includes a permeability coefficient, a reference radius, a head height from the natural water level to the bottom plate of the aquifer, and the thickness of the aquifer. Based on the Nth drainage water level drop, the drainage elevation of the Nth water level observation hole, and the preset parameter set, the predicted water inflow of the Nth collapse step is determined, including: determining the influence radius of the Nth aquifer based on the Nth drainage water level drop, the permeability coefficient, and the reference radius; obtaining the Nth distance difference based on the distance between the drainage elevation of the Nth water level observation hole and the bottom plate of the aquifer; and determining the predicted water inflow of the Nth collapse step based on the permeability coefficient, the head height from the natural water level to the bottom plate of the aquifer, the thickness of the aquifer, the Nth distance difference, the reference radius, and the influence radius of the Nth aquifer.

[0009] According to a method for measuring water inflow in a mine provided by the present invention, the method further includes: when mining is carried out within the first collapse step in the mining direction, obtaining the natural water level elevation, the natural water level elevation being the water level of the water level observation hole when no mining is carried out; determining the first drainage water level drop based on the difference between the natural water level elevation and the bottom plate of the aquifer; determining the first aquifer influence radius based on the first drainage water level drop, the permeability coefficient and the reference radius; obtaining the first distance difference based on the distance between the drainage elevation of the first water level observation hole and the bottom plate of the aquifer; determining the predicted water inflow of the first collapse step based on the permeability coefficient, the head height from the natural water level to the bottom plate of the aquifer, the thickness of the aquifer, the first distance difference, the reference radius and the first aquifer influence radius, so as to obtain the total water inflow of the mining working face.

[0010] According to a method for measuring mine water inflow provided by the present invention, the drainage elevation of the first water level observation hole is determined based on the following steps: determining the drainage elevation of the first water level observation hole based on the difference between the natural water level elevation and the first drainage water level drop.

[0011] According to a method for measuring water inflow in a mine provided by the present invention, the water level observation hole is determined based on the following steps: N water level observation holes are set on the outside of the mining working face, and the distance between the water level observation hole of the current collapse step and the adjacent next water level observation hole is equal to the length of the current collapse step.

[0012] In the second aspect, the present invention also provides a device for measuring the water inflow of a mine, including: a module for determining the predicted water inflow of a collapse step, which is used to determine the predicted water inflow of the current collapse step based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the next adjacent water level observation hole when mining within the Nth collapse step in the mining direction, so as to obtain the predicted water inflow of each collapse step, the drainage elevation of the water level observation hole is the water level height of the water level observation hole after it drops to a stable state during mining, and the next adjacent water level observation hole is set in the next collapse step adjacent to the current collapse step, and the predicted water inflow of the first collapse step is 0; a module for determining the total water inflow of a mining working face, which is used to obtain the total water inflow of a mining working face based on the sum of the predicted water inflows of all collapse steps.

[0013] In a third aspect, the present invention provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, any of the above-mentioned methods for measuring water inflow in a mine is implemented.

[0014] In a fourth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the method for measuring mine water inflow in the first aspect.

[0015] In a fifth aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-mentioned methods for measuring mine water inflow.

[0016] The present invention provides a method, device, electronic device, product, and medium for measuring the water inflow of a mine. When mining is performed within the Nth caving step in the mining direction, the predicted water inflow of the current caving step is determined based on the drainage elevation of the water level observation hole of the current caving step and the drainage elevation of the next adjacent water level observation hole. This method obtains the predicted water inflow for each caving step. The drainage elevation of the water level observation hole is the water level of the water level observation hole after it has dropped to a stable state during mining. The next adjacent water level observation hole is set in the next caving step adjacent to the current caving step, and the predicted water inflow for the first caving step is 0. The total water inflow of the mining face is obtained based on the sum of the predicted water inflows of all caving steps. The present invention determines the predicted water inflow for each caving step based on the drainage elevations of two adjacent water level observation holes, thereby accurately calculating the predicted water inflow for each caving step. The total water inflow of the mining face is determined based on the sum of the predicted water inflow of each collapse step. The dynamic changes in water level caused by the regular collapse characteristics of the roof overburden after mining of the mining face are taken into account, which improves the accuracy of determining the total water inflow of the mining face. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a flow chart of the method for measuring the mine water inflow provided by the present invention;

[0019] Figure 2 This is a schematic structural diagram of a device for measuring water inflow in a mine provided by the present invention;

[0020] Figure 3 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0022] The following combination Figure 1-Figure 3 The present invention provides a method, device and electronic equipment for measuring water inflow in a mine.

[0023] Figure 1 : This is a flow chart of a method for measuring water inflow in a mine provided by the present invention. The method for measuring water inflow in a mine includes steps S100 to S200. The specific steps are as follows:

[0024] S100: When mining within the Nth collapse step in the mining direction, the predicted water inflow of the current collapse step is determined based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the next adjacent water level observation hole to obtain the predicted water inflow of each collapse step.

[0025] The drainage elevation of the water level observation hole is the water level height of the water level observation hole after it drops to a stable state during mining. The next adjacent water level observation hole is set in the next collapse step adjacent to the current collapse step. The predicted water inflow of the first collapse step is 0.

[0026] The current step-overfall distance is any one of the N step-overfall distances. The step-overfall distance refers to the distance between two collapses of the coal seam roof overburden. The size of the step-overfall distance depends on many factors, including the geological conditions of the ore body, mining methods, mining technology, mining equipment, and safety requirements. During the mining process, multiple step-overfall distances may occur at different locations and stages. The predicted water inflow for a step-overfall distance refers to the groundwater flow rate within the distance range of the step-overfall distance. Water level observation holes, also known as hydrological long-term observation holes, are long-term observation holes used to monitor changes in groundwater level and water quality.

[0027] The water level observation holes are determined based on the following steps: N water level observation holes are set outside the mining working face, and the distance between the water level observation hole of the current collapse step and the next adjacent water level observation hole is equal to the length of the current collapse step.

[0028] Within different collapse steps, hydrological observation holes (water level observation holes) are set up to monitor dynamic changes in water levels. Within the Nth collapse step, the water level observation holes are numbered N. For example, the water level observation hole within the first collapse step is numbered 1, and the water level observation hole within the second collapse step is numbered 2. The distance between the Nth water level observation hole and the N-1th water level observation hole is equal to the length of the Nth collapse step. For example, if the length of the first collapse step is 200m, the second water level observation hole is set up every 200m.

[0029] The water level observation hole of the current collapse step is the Nth water level observation hole, the next water level observation hole is the N-1th water level observation hole, and the current collapse step is the Nth collapse step. Based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the next adjacent water level observation hole, the predicted water inflow of the current collapse step is determined, including: obtaining the Nth drainage water level drop based on the difference between the drainage elevation of the Nth water level observation hole and the drainage elevation of the N-1th water level observation hole; determining the predicted water inflow of the Nth collapse step based on the Nth drainage water level drop, the drainage elevation of the Nth water level observation hole and the preset parameter set.

[0030] Along the mining direction, each collapse step is numbered, and then the water level observation holes within each collapse step are numbered. For example, along the mining direction, the water level observation hole within the first collapse step is numbered as the first water level observation hole, and the water level observation hole within the Nth collapse step is numbered as the Nth water level observation hole.

[0031] When mining within the Nth (N ≥ 2)th collapse step, the drainage elevation of each water level observation hole is the water level measured through the water level observation hole when the water level at the water level observation hole has stabilized. When mining within the Nth collapse step, measure the drainage elevation of each water level observation hole. The Nth drainage water level drawdown is calculated based on the difference between the drainage elevation of the Nth water level observation hole and the drainage elevation of the N-1th water level observation hole. For example, if the drainage elevation of the Nth water level observation hole is the natural water level elevation + 500m and the drainage elevation of the N-1th water level observation hole is + 260m, then the Nth drainage water level drawdown is 240m.

[0032] The preset parameter set includes the permeability coefficient, the reference radius, the head height from the natural water level to the bottom of the aquifer and the thickness of the aquifer. Based on the Nth drainage water level drop, the drainage elevation of the Nth water level observation hole and the preset parameter set, the predicted water inflow of the Nth collapse step is determined, including: determining the Nth aquifer influence radius based on the Nth drainage water level drop, the permeability coefficient and the reference radius; obtaining the Nth distance difference based on the distance between the drainage elevation of the Nth water level observation hole and the bottom of the aquifer; determining the predicted water inflow of the Nth collapse step based on the permeability coefficient, the head height from the natural water level to the bottom of the aquifer, the thickness of the aquifer, the Nth distance difference, the reference radius and the Nth aquifer influence radius.

[0033] The large well method is used to predict the water inflow of the Nth collapse step. The calculation formula for the predicted water inflow of the Nth collapse step is:

[0034] ;

[0035] in, is the predicted water inflow of the Nth collapse step, is the head height from the natural water level to the bottom of the aquifer, is the aquifer thickness, is the permeability coefficient, is the influence radius of the Nth aquifer, The water level of the Nth drainage is lowered. is the citation radius, is the Nth distance difference, is the area of ​​the mining working face, where N ≥ 2.

[0036] The hydraulic conductivity, reference radius, head height from the natural water level to the aquifer bottom, and aquifer thickness in the preset parameter set are pre-measured.

[0037] According to the above method, the predicted water inflow of each collapse step is calculated. For example, the predicted water inflow of the N-1th collapse step is calculated as , ..., the predicted water inflow of the second collapse step is When mining is carried out within the second, third or Nth collapse step, the predicted water inflow of the first collapse step is generalized to 0.

[0038] For example, when mining within the third collapse step, the drainage elevation of the first water level observation hole is measured to be 240m, the drainage elevation of the second water level observation hole is 260m, and the drainage elevation of the third water level observation hole is 500m. The difference between the drainage elevation of the third water level observation hole and the drainage elevation of the second water level observation hole is 240m, so the water level of the third drainage hole is lowered by 1. is 240m. Substituting into the calculation formula of the predicted water inflow of the collapse step distance, we get The difference between the drainage elevation of the second water level observation hole and the drainage elevation of the first water level observation hole is 20m, so the water level of the second drainage hole is lowered. is 20m. Substituting into the calculation formula of the predicted water inflow of the collapse step distance, we get . Equal to 0.

[0039] S200: Based on the sum of the predicted water inflow of all collapse steps, the total water inflow of the mining working face is obtained.

[0040] The predicted water inflow of all the collapse steps is added together to obtain the total water inflow of the mining face when mining within the Nth collapse step. The calculation formula for the total water inflow of the mining face is:

[0041]

[0042] in, is the total water inflow from the mining face, is the predicted water inflow of the second collapse step, is the predicted water inflow of the third collapse step, is the predicted water inflow for the Nth collapse step.

[0043] When mining is carried out within the Nth (N≥2) collapse step, the water inflow of the first collapse step is generalized to 0. Therefore, when mining is carried out within the Nth (N≥2) collapse step, the water inflow of the first collapse step does not need to be considered when calculating the total water inflow of the mining face.

[0044] The method for measuring the water inflow of a mine provided by an embodiment of the present invention determines the predicted water inflow of the current collapse step based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the next adjacent water level observation hole when mining within the Nth collapse step in the mining direction, so as to obtain the predicted water inflow of each collapse step. The drainage elevation of the water level observation hole is the water level height of the water level observation hole after it drops to a stable state during mining. The next adjacent water level observation hole is set in the next collapse step adjacent to the current collapse step, and the predicted water inflow of the first collapse step is 0. The total water inflow of the mining working face is obtained based on the sum of the predicted water inflows of all collapse steps. The present invention determines the predicted water inflow of each collapse step based on the drainage elevations of two adjacent water level observation holes, thereby accurately calculating the predicted water inflow of each collapse step. The total water inflow of the mining face is determined based on the sum of the predicted water inflow of each collapse step. The dynamic changes in water level caused by the regular collapse characteristics of the roof overburden after mining of the mining face are taken into account, which improves the accuracy of determining the total water inflow of the mining face.

[0045] Based on the above embodiment, the method for measuring the amount of water inflow in a mine further includes steps S300 to S700, each of which is specifically as follows:

[0046] S300: When mining is carried out within the first collapse step in the mining direction, the natural water level elevation is obtained. The natural water level elevation is the water level of the water level observation hole when mining is not carried out.

[0047] S400: Determine the first drainage water level drawdown based on the difference between the natural water level elevation and the aquifer bottom.

[0048] S500: Determine the impact radius of the first aquifer based on the first dewatering water level drawdown, the permeability coefficient, and the reference radius.

[0049] S600: Obtain a first distance difference based on the distance between the drainage elevation of the first water level observation hole and the bottom plate of the aquifer.

[0050] S700: Based on the permeability coefficient, the head height from the natural water level to the bottom of the aquifer, the aquifer thickness, the first distance difference, the reference radius and the first aquifer influence radius, determine the predicted water inflow of the first collapse step to obtain the total water inflow of the mining working face.

[0051] The drainage elevation of the first water level observation hole is determined based on the following steps: the drainage elevation of the first water level observation hole is determined based on the difference between the natural water level elevation and the first drainage water level drop.

[0052] An aquifer is a groundwater body that exists around an ore body or mine. When mining is carried out within the first collapse step, the natural water level elevation is obtained, for example, the natural water level elevation is +500m. The first water level observation hole is set within the first collapse step. When mining is not carried out within the first collapse step, the water level of the first water level observation hole is the natural water level elevation + 500m. When mining is carried out within the first collapse step, the water level of the first water level observation hole is drained to the bottom of the aquifer. The distance from the natural water level elevation to the bottom of the aquifer is the drainage elevation of the first water level observation hole. For example, if the natural water level is 500m and the distance from the natural water level elevation to the bottom of the aquifer is 300m, then the first drainage water level drop is 300m, and the drainage elevation of the first water level observation hole is 200m. The large well method is used to predict the predicted water inflow of the first collapse step. The calculation formula for the predicted water inflow of the first collapse step is:

[0053]

[0054] in, is the predicted water inflow of the first collapse step, is the head height from the natural water level to the bottom of the aquifer, is the aquifer thickness, is the permeability coefficient, is the influence radius of the first aquifer, The water level was lowered for the first drainage. is the citation radius, is the first distance difference, is equal to 0, is the area of ​​the mining face.

[0055] Because the water level in the first water level observation hole has been drained to the aquifer floor when calculating the predicted water yield for the first collapse step (i.e., the distance between the drainage elevation of the first water level observation hole and the aquifer floor is 0), the predicted water yield for the first collapse step is generalized to 0 when mining within the second, third, ..., and Nth collapse steps.

[0056] The embodiment of the present invention achieves accurate calculation of the predicted water inflow of the first collapse step by draining the water level of the first water level observation hole to the bottom plate of the aquifer.

[0057] In order to further illustrate the method for measuring the amount of water inflow in a mine provided in the embodiment of the present application, the following examples are used for illustration:

[0058] The roof overburden of a mining face has a collapse step distance of 200 meters. The natural water level is at +500 meters, 300 meters from the aquifer floor. Hydrological observation holes (water level observation holes) are installed at 200-meter intervals outside the mining face. These holes are numbered: First Water Level Observation Hole, Second Water Level Observation Hole, Third Water Level Observation Hole, ..., Nth Water Level Observation Hole.

[0059] When mining is carried out within the first collapse step, the predicted water inflow of the first collapse step is predicted. The first drainage water level drop is obtained based on the difference between the water head height (natural water level elevation) under natural conditions and the drainage elevation of the first water level observation hole. is 300m, and the calculation formula of the predicted water inflow of the collapse step is substituted into it, and we get The total water inflow from the mining face is .

[0060] When mining at the second collapse step, the predicted water inflow of the second collapse step is predicted. At this time, the drainage elevation of the second water level observation hole is +500m, and the drainage elevation of the first water level observation hole is +260m. The second drainage water level drop is obtained based on the difference between the drainage elevation of the second water level observation hole and the drainage elevation of the first water level observation hole. is 240m, and the calculation formula of the predicted water inflow of the collapse step is substituted into it, and we get .at this time, The total water inflow at the mining face is .

[0061] When mining at the third collapse step, the predicted water inflow of the third collapse step and the predicted water inflow of the second collapse step are predicted. At this time, the drainage elevation of the third water level observation hole is +500m, and the drainage elevation of the second water level observation hole is +260m. The drainage elevation of the first water level observation hole is +240m. The water level drop of the third drainage is obtained based on the difference between the drainage elevation of the third water level observation hole and the drainage elevation of the second water level observation hole. is 240m, and the calculation formula of the predicted water inflow of the collapse step is substituted into it, and we get The second drainage water level drop is obtained based on the difference between the drainage elevation of the second water level observation hole and the drainage elevation of the first water level observation hole. is 20m, and the calculation formula of the predicted water inflow of the collapse step is substituted into it, and we get .at this time, The total water inflow at the mining face is

[0062] When mining is carried out at the Nth collapse step, the predicted water inflow of each collapse step is calculated. At this time, the drainage elevation of the Nth water level observation hole is +500m, the drainage elevation of the N-1th water level observation hole is +260, ..., the drainage elevation of the second water level observation hole is +205m, and the drainage elevation of the first water level observation hole is +201m. According to the difference between the drainage elevation of the Nth water level observation hole and the drainage elevation of the N-1th water level observation hole, the Nth drainage water level drop is obtained. is 240m, and the calculation formula of the predicted water inflow of the collapse step is substituted into it, and we get According to the difference between the drainage elevation of the second water level observation hole and the drainage elevation of the first water level observation hole, the second drainage water level drop is obtained. is 4m, and the calculation formula of the predicted water inflow of the collapse step is substituted into it, and we get The total water inflow from the mining face is .

[0063] The method for measuring mine water inflow provided by the embodiments of the present invention optimizes the "large well method" prediction formula to achieve dynamic prediction of mine water inflow. This method addresses the regular collapse of the roof overburden after mining at the mining face, as well as the resulting dynamic changes in water levels, and utilizes groundwater level monitoring data to increase the accuracy of mine water inflow prediction. This method is beneficial to mine safety, provides a technical basis for mine water prevention and control, reduces water prevention and control costs, and increases efficiency.

[0064] The embodiment of the present invention also provides a device for measuring the amount of water inflow in a mine, such as Figure 2 As shown, Figure 2 It should be noted that the device for measuring the amount of water inflow in a mine provided by the present invention can, when in operation, execute the method for measuring the amount of water inflow in a mine provided by any of the above embodiments, which will not be described in detail in this embodiment.

[0065] Reference Figure 2 , an embodiment of the present invention provides a device for measuring water inflow in a mine, comprising:

[0066] The module 201 for determining the predicted water inflow of a collapse step is used to determine the predicted water inflow of the current collapse step based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the next adjacent water level observation hole when mining within the Nth collapse step in the mining direction, so as to obtain the predicted water inflow of each collapse step. The drainage elevation of the water level observation hole is the water level height of the water level observation hole after it drops to a stable state during mining. The next adjacent water level observation hole is set in the next collapse step adjacent to the current collapse step. The predicted water inflow of the first collapse step is 0.

[0067] The total water inflow determination module 202 of the mining working face is used to obtain the total water inflow of the mining working face based on the sum of the predicted water inflows of all the collapse step distances.

[0068] The device for measuring the water inflow of a mine provided by an embodiment of the present invention determines the predicted water inflow of the current collapse step based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the next adjacent water level observation hole when mining within the Nth collapse step in the mining direction, so as to obtain the predicted water inflow of each collapse step. The drainage elevation of the water level observation hole is the water level height of the water level observation hole after it drops to a stable state during mining. The next adjacent water level observation hole is set in the next collapse step adjacent to the current collapse step, and the predicted water inflow of the first collapse step is 0. The total water inflow of the mining working face is obtained based on the sum of the predicted water inflows of all collapse steps. The present invention determines the predicted water inflow of each collapse step based on the drainage elevations of two adjacent water level observation holes, thereby accurately calculating the predicted water inflow of each collapse step. The total water inflow of the mining face is determined based on the sum of the predicted water inflow of each collapse step. The dynamic changes in water level caused by the regular collapse characteristics of the roof overburden after mining of the mining face are taken into account, which improves the accuracy of determining the total water inflow of the mining face.

[0069] In one embodiment, the water level observation hole of the current collapse step is the Nth water level observation hole, the next water level observation hole is the N-1th water level observation hole, the current collapse step is the Nth collapse step, and the predicted water inflow determination module 201 of the collapse step is used to: obtain the Nth drainage water level drop based on the difference between the drainage elevation of the Nth water level observation hole and the drainage elevation of the N-1th water level observation hole; determine the predicted water inflow of the Nth collapse step based on the Nth drainage water level drop, the drainage elevation of the Nth water level observation hole and the preset parameter set.

[0070] In one embodiment, the preset parameter set includes the permeability coefficient, the reference radius, the head height from the natural water level to the bottom of the aquifer, and the aquifer thickness. The predicted water yield determination module 201 for the collapse step is used to: determine the influence radius of the Nth aquifer based on the Nth dewatering water level drop, the permeability coefficient, and the reference radius; obtain the Nth distance difference based on the distance between the dewatering elevation of the Nth water level observation hole and the bottom of the aquifer; determine the predicted water yield of the Nth collapse step based on the permeability coefficient, the head height from the natural water level to the bottom of the aquifer, the aquifer thickness, the Nth distance difference, the reference radius, and the influence radius of the Nth aquifer.

[0071] In one embodiment, the module 201 for determining the predicted water inflow of a collapse step is also used to: when mining is carried out within the first collapse step in the mining direction, obtain the natural water level elevation, the natural water level elevation being the water level of the water level observation hole when no mining is carried out; determine the first drainage water level drop based on the difference between the natural water level elevation and the bottom plate of the aquifer; determine the first aquifer influence radius based on the first drainage water level drop, the permeability coefficient and the reference radius; obtain the first distance difference based on the distance between the drainage elevation of the first water level observation hole and the bottom plate of the aquifer; determine the predicted water inflow of the first collapse step based on the permeability coefficient, the head height from the natural water level to the bottom plate of the aquifer, the thickness of the aquifer, the first distance difference, the reference radius and the first aquifer influence radius to obtain the total water inflow of the mining working face.

[0072] In one embodiment, the predicted water inflow determination module 201 for the collapse step is further configured to determine the drainage elevation of the first water level observation hole based on the difference between the natural water level elevation and the first drainage water level drop.

[0073] In one embodiment, the predicted water inflow determination module 201 for the collapse step is used to: set N water level observation holes outside the mining working face, and the distance between the water level observation hole of the current collapse step and the adjacent next water level observation hole is equal to the length of the current collapse step.

[0074] Figure 3 Schematic diagram of the structure of the electronic device provided by the present invention, such as Figure 3As shown, the electronic device may include: a processor 310 , a communications interface 320 , a memory 330 and a communication bus 340 , wherein the processor 310 , the communications interface 320 and the memory 330 communicate with each other via the communication bus 340 . The processor 310 can call the logic instructions in the memory 330 to execute a method for measuring the water inflow of a mine, which includes: when mining within the Nth collapse step in the mining direction, based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the next adjacent water level observation hole, determine the predicted water inflow of the current collapse step to obtain the predicted water inflow of each collapse step, the drainage elevation of the water level observation hole is the water level height of the water level observation hole after it drops to a stable state during mining, the next adjacent water level observation hole is set in the next collapse step adjacent to the current collapse step, and the predicted water inflow of the first collapse step is 0; based on the sum of the predicted water inflows of all collapse steps, the total water inflow of the mining working face is obtained.

[0075] Furthermore, the logic instructions in the aforementioned memory 330 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product, stored in a storage medium, includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0076] On the other hand, an embodiment of the present application also provides a computer program product, which includes a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the mine water inflow measurement method provided by the above embodiments, for example, including: when mining within the Nth collapse step in the mining direction, based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the adjacent next water level observation hole, determine the predicted water inflow of the current collapse step to obtain the predicted water inflow of each collapse step, the drainage elevation of the water level observation hole is the water level height of the water level observation hole after it drops to a stable state during mining, the adjacent next water level observation hole is set in the next collapse step adjacent to the current collapse step, and the predicted water inflow of the first collapse step is 0; based on the sum of the predicted water inflows of all collapse steps, obtain the total water inflow of the mining working face.

[0077] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the mine water inflow measurement method provided in the above-mentioned embodiments, the method comprising: when mining within the Nth collapse step in the mining direction, determining the predicted water inflow of the current collapse step based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the adjacent next water level observation hole, so as to obtain the predicted water inflow of each collapse step, the drainage elevation of the water level observation hole is the water level height of the water level observation hole after it drops to a stable state during mining, the adjacent next water level observation hole is set in the next collapse step adjacent to the current collapse step, and the predicted water inflow of the first collapse step is 0; based on the sum of the predicted water inflows of all collapse steps, the total water inflow of the mining working face is obtained.

[0078] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0079] Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a necessary general-purpose hardware platform, or of course, hardware. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, or an optical disk, and includes a number of instructions for causing a computer device (such as a personal computer, server, or network device) to execute the methods described in each embodiment or certain portions of the embodiments.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for measuring water inflow in a mine, characterized in that: include: When mining is carried out within the Nth caving step in the mining direction, the predicted water inflow of the current caving step is determined based on the drainage elevation of the water level observation hole of the current caving step and the drainage elevation of the adjacent previous water level observation hole, so as to obtain the predicted water inflow of each caving step, the drainage elevation of the water level observation hole being the water level height of the water level observation hole after it drops to a stable state during mining, the adjacent previous water level observation hole being set in the previous caving step adjacent to the current caving step, and the predicted water inflow of the first caving step being 0; Based on the sum of the predicted water inflow of all the collapse steps, the total water inflow of the mining face is obtained, N≥2; The water level observation hole of the current collapse step is the Nth water level observation hole, the previous water level observation hole is the N-1th water level observation hole, the current collapse step is the Nth collapse step, and the predicted water inflow of the current collapse step is determined based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the adjacent previous water level observation hole, including: Based on the difference between the drainage elevation of the Nth water level observation hole and the drainage elevation of the N-1th water level observation hole, the Nth drainage water level drop is obtained; Determining the predicted water inflow of the Nth collapse step based on the Nth drainage water level drop, the drainage elevation of the Nth water level observation hole and a preset parameter set; The preset parameter set includes a permeability coefficient, a reference radius, a water head height from a natural water level to aquifer bottom plate, and aquifer thickness. The method of determining the predicted water yield of the Nth collapse step based on the Nth dewatering water level drawdown, the dewatering elevation of the Nth water level observation hole, and the preset parameter set includes: Determining the influence radius of the Nth aquifer based on the Nth dewatering water level drawdown, the permeability coefficient, and the reference radius; Obtaining an Nth distance difference based on the distance between the drainage elevation of the Nth water level observation hole and the bottom plate of the aquifer; The predicted water yield of the Nth collapse step is determined based on the permeability coefficient, the head height from the natural water level to the bottom plate of the aquifer, the thickness of the aquifer, the Nth distance difference, the reference radius and the Nth aquifer influence radius.

2. The method for measuring mine water inflow according to claim 1, characterized in that: The method further comprises: When mining is carried out within the first caving step in the mining direction, N=1, and the natural water level elevation is obtained, where the natural water level elevation is the water level of the water level observation hole when mining is not carried out; determining a first dewatering drawdown depth based on the difference between the natural water level and the aquifer bottom; determining the first aquifer influence radius based on the first dewatering water level drawdown, the permeability coefficient, and the reference radius; Obtaining a first distance difference based on the distance between the drainage elevation of the first water level observation hole and the bottom plate of the aquifer; Determine the predicted water inflow of the first collapse step based on the hydraulic conductivity, the water head height from the natural water level to the bottom of the aquifer, the thickness of the aquifer, the first distance difference, the reference radius, and the first aquifer influence radius, so as to obtain the total water inflow of the mining working face; The drainage elevation of the first water level observation hole is determined based on the following steps: The drainage elevation of the first water level observation hole is determined based on the difference between the natural water level elevation and the first drainage water level drop.

3. A device for measuring water inflow in a mine, characterized in that: include: A module for determining the predicted water inflow of a caving step is used to determine the predicted water inflow of the current caving step based on the drainage elevation of the water level observation hole of the current caving step and the drainage elevation of the adjacent previous water level observation hole when mining is carried out within the Nth caving step in the mining direction, so as to obtain the predicted water inflow of each caving step. The drainage elevation of the water level observation hole is the water level height of the water level observation hole after it drops to a stable state during mining. The adjacent previous water level observation hole is set in the previous caving step adjacent to the current caving step. The predicted water inflow of the first caving step is 0. A total water inflow determination module for a mining working face is configured to obtain the total water inflow of the mining working face based on the sum of the predicted water inflows of all the collapse step distances, where N is greater than or equal to 2; The water level observation hole of the current collapse step is the Nth water level observation hole, the previous water level observation hole is the N-1th water level observation hole, the current collapse step is the Nth collapse step, and the predicted water inflow of the current collapse step is determined based on the drainage elevation of the water level observation hole of the current collapse step and the drainage elevation of the adjacent previous water level observation hole, including: Based on the difference between the drainage elevation of the Nth water level observation hole and the drainage elevation of the N-1th water level observation hole, the Nth drainage water level drop is obtained; Determining the predicted water inflow of the Nth collapse step based on the Nth drainage water level drop, the drainage elevation of the Nth water level observation hole and a preset parameter set; The preset parameter set includes a permeability coefficient, a reference radius, a water head height from a natural water level to aquifer bottom plate, and aquifer thickness. The method of determining the predicted water yield of the Nth collapse step based on the Nth dewatering water level drawdown, the dewatering elevation of the Nth water level observation hole, and the preset parameter set includes: Determining the influence radius of the Nth aquifer based on the Nth dewatering water level drawdown, the permeability coefficient, and the reference radius; Obtaining an Nth distance difference based on the distance between the drainage elevation of the Nth water level observation hole and the bottom plate of the aquifer; The predicted water yield of the Nth collapse step is determined based on the permeability coefficient, the head height from the natural water level to the bottom plate of the aquifer, the thickness of the aquifer, the Nth distance difference, the reference radius and the Nth aquifer influence radius.

4. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method for measuring the mine water inflow as described in any one of claims 1 to 2 is implemented.

5. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the method for measuring the mine water inflow as claimed in any one of claims 1 to 2 is implemented.

6. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for measuring the mine water inflow as claimed in any one of claims 1 to 2 is implemented.

Images