Simulation method and related equipment for water inrush disaster evolution based on mine water control area

Abstract

The present application provides a method and related equipment for simulating the evolution of water inrush disasters based on mine water control areas. First, it is necessary to construct a one-dimensional topological structure model of the mine excavation space network. Then, the topological elements of the mine excavation space are calculated, and based on these topological elements, the mine excavation space is divided into multiple non-intersecting water control areas. Then, the amount of water accumulated in each water control area is calculated. Finally, based on the known water inrush points and the amount of water accumulated in all water control areas, the evolution process of mine water disasters is simulated. By simulating the evolution process of mine water disasters, the flooding range is determined according to the cumulative water inrush volume and the amount of water accumulated in each water control area, the disaster spread time is estimated, and emergency rescue and disposal decisions are guided. According to different water inrush conditions, the evolution process of mine water disasters is calculated quickly and accurately, providing a basis for emergency plan design, emergency drills, rescue and disposal, and has strong operability.

Description

Technical Field

[0001] The present application relates to the technical field of mine water hazard prevention and control, and in particular to a method for simulating the evolution of water inrush disasters based on a mine water control area and related equipment. Background Art

[0002] With the continuous development of information and intelligence in the coal industry, the intelligent construction of safe mining in mines is constantly advancing. As one of the main disasters in mines, mine water hazards have always been the focus of research on safe mining in mines because they are prone to cause mass deaths and injuries and major property losses. Its intelligent research is also relatively extensive, including intelligent prediction and forecasting, intelligent monitoring and early warning, intelligent drainage, intelligent grouting, intelligent water source identification and intelligent escape and evacuation.

[0003] During the mining process, the tunnels fluctuate with the coal seams, often forming a complex spatial structure. The flow process of water inrush after entering the mining space is affected by the topological structure of the mining space, especially the distribution of low-lying locations and their connection relationships. In the process of water disaster simulation, the mining space of the mine is generalized into a three-dimensional point-line network structure, and then analyzed and studied using point-line adjacency relationships, graph theory, and fluid mechanics methods. However, the combination and in-depth exploration of the topological characteristics of the mining space and the theory of fluid mechanics are relatively insufficient, and it is impossible to achieve effective and efficient water disaster simulation, resulting in the failure of mine water disaster prevention. Summary of the invention

[0004] In view of this, the purpose of this application is to propose a method and related equipment for simulating the evolution of water inrush disasters based on a mine water control area.

[0005] Based on the above purpose, the first aspect of the present application provides a method for simulating the evolution of flood disasters based on a mine water control area, comprising:

[0006] Construct a one-dimensional topological structure model of the mine excavation space network;

[0007] Based on the one-dimensional topological structure model, obtaining the topological elements of the mine excavation space;

[0008] Based on the topological elements, the mining space of the mine is divided into a plurality of non-intersecting water control zones;

[0009] Calculating the amount of accumulated water in each of the water control areas;

[0010] Based on the known water inrush points and the amount of water accumulated in all the water control areas, the evolution of the mine water disaster is simulated.

[0011] The second aspect of the present application provides a device for simulating the evolution of flood disasters based on a mine water control area, comprising:

[0012] The model building module is configured to: build a one-dimensional topological structure model of the mine excavation space network;

[0013] An element calculation module is configured to: obtain the topological elements of the mine excavation space based on the one-dimensional topological structure model;

[0014] The water control area division module is configured to: divide the mine excavation space into a plurality of non-intersecting water control areas based on the topological elements;

[0015] The water accumulation calculation module is configured to: calculate the water accumulation in each of the water control areas;

[0016] The simulation drill module is configured to simulate the evolution of mine water disaster based on preset water inrush points and the amount of water accumulated in all the water control areas.

[0017] The third aspect of the present application 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, the method provided in the first aspect of the present application is implemented.

[0018] As can be seen from the above, the simulation method and related equipment for the evolution of water inrush disaster based on the mine water control area provided by this application, first, need to construct a one-dimensional topological structure model of the mine excavation space network, and use the one-dimensional topological structure model to visualize the mine excavation space. Then, the topological elements of the mine excavation space are obtained, and according to these topological elements, the mine excavation space is divided into multiple non-intersecting water control areas, and the division of multiple water control areas provides a basis for the simulation of the spread of water inrush, which is convenient for the mine excavation space to carry out flood management when a flood disaster occurs. Then, the amount of water accumulation in each water control area is calculated to provide data support for the estimation of the spread time of the flood. Finally, based on the known water inrush points and the amount of water accumulation in all water control areas, the evolution process of mine water disaster is simulated. By simulating the evolution process of mine water disaster, the flooding range is determined according to the cumulative amount of water inrush and the amount of water accumulation in each water control area, the disaster spread time is estimated, and emergency rescue and disposal decisions are guided. To sum up, the method for simulating the evolution of water inrush disasters based on the mine water control area provided in this application can quickly and accurately calculate the evolution process of mine water disasters according to different water inrush conditions, provide a basis for emergency plan design, emergency drills, rescue and disposal, and has strong operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or 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 creative work.

[0020] Figure 1 This is a flow chart of a method for simulating the evolution of water inrush disasters based on a mine water control area according to an embodiment of the present application;

[0021] Figure 2 A flowchart of constructing a one-dimensional topological structure model according to an embodiment of the present application;

[0022] Figure 3 This is a structural diagram of topological elements and water control area search of an exemplary one-dimensional topological structure model of an embodiment of the present application;

[0023] Figure 4 A flowchart of obtaining topological elements according to an embodiment of the present application;

[0024] Figure 5 A flow chart of dividing water control zones according to an embodiment of the present application;

[0025] Figure 6 This is a flow chart of calculating the amount of water accumulated in the water control area according to an embodiment of the present application;

[0026] Figure 7a This is a structural diagram of a rectangular nearly vertical laneway according to an embodiment of the present application;

[0027] Figure 7b This is a structural diagram of a rectangular nearly horizontal tunnel according to an embodiment of the present application;

[0028] Figure 8a This is a structural diagram of a goaf area with the same inclination angle in an embodiment of the present application;

[0029] Figure 8b It is a structural diagram of goaf areas with different inclination angles in an embodiment of the present application;

[0030] Fig. 9 A flow chart of a simulation of the evolution of a mine flood disaster according to an embodiment of the present application;

[0031] Fig.10 This is a structural diagram of water control area division for simulation drill in an embodiment of the present application;

[0032] Fig.11a This is a schematic diagram of the spatial structure of the south wing excavation working face of the mining area according to an embodiment of the present application;

[0033] Fig.11b This is a schematic cross-sectional view of the excavation working face on the south wing of the mining area according to an embodiment of the present application;

[0034] Fig.12 This is a structural diagram of a device for simulating the evolution of water inrush disasters based on a mine water control area according to an embodiment of the present application;

[0035] Fig.13 A structural diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0037] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings 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 or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "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.

[0038] Related technology center, mine water disaster simulation is an important basis for emergency plan formulation, emergency drills, emergency rescue and disposal decisions. Some related technologies use directed graphs to generalize the tunnel topology network, and based on the Manning formula of water flow dynamics, describe the flow law of water in the tunnel, and propose algorithms for calculating the mine water disaster spread path and optimizing the disaster avoidance route. Some related technologies use the Xie Cai formula of fluid mechanics to describe the tunnel water flow spread speed and arrival time, and construct a spatiotemporal dynamic simulation model of mine water flow spread. On the basis of summarizing that empirical formulas such as the Manning formula and the Xie Cai formula are not enough to accurately describe the tunnel water flow spread law, some related technologies propose numerical simulation methods based on open and full flow hydrodynamic equations, and numerically simulate relevant elements in the evolution of mine water disasters such as tunnel bifurcation and diversion, pumps, gates and goaf water accumulation, which greatly enhances the practicality of disaster simulation. In the process of water disaster simulation, the mine excavation space is generalized into a three-dimensional point-line network structure, and then the point-line adjacency relationship, graph theory and fluid mechanics methods are used for analysis and research. However, the combination and in-depth exploration of the topological characteristics of mining space and fluid mechanics theory are relatively insufficient. During the mining process, the tunnels fluctuate with the height of the coal seam, often forming a more complex spatial structure. The flow process of water inrush after entering the mining space is affected by the topological structure of the mining space, especially the distribution of low-lying locations and their connection relationships. As a result, the relevant technologies cannot achieve effective and efficient simulation of water disasters, resulting in the failure of preventing mine water disasters.

[0039] The simulation method and related equipment for the evolution of water inrush disaster based on the water control area of ​​a mine provided in the embodiment of the present application construct a one-dimensional topological structure model of the mining space network of the mine, and focus on calculating the topological elements of the low-lying position to reduce the influence of the low-lying position on the simulation results. After calculating the topological elements of the mining space of the mine, the mining space of the mine is divided into multiple non-intersecting water control areas according to these topological elements, and the overall complex topological structure is divided into multiple regions, so as to improve the accuracy of the simulation results and avoid the influence of the complex topological structure of the mining space on the simulation of regional flood disasters. Finally, the amount of accumulated water in each water control area is calculated, and the evolution process of the mine water disaster is simulated according to the known water inrush points and the accumulated water in all water control areas. According to different water inrush conditions, the evolution process of the mine water disaster is calculated quickly and accurately, providing a basis for emergency plan design, emergency drills, rescue and disposal. By simulating the evolution process of the mine water disaster, the flooding range is determined according to the cumulative water inrush and the accumulated water in each water control area, the disaster spread time is estimated, and the emergency rescue and disposal decision is guided, which has strong operability.

[0040] In some embodiments, Figure 1 As shown, a method for simulating the evolution of water inrush disaster based on a mine water control area includes:

[0041] Step 100: Construct a one-dimensional topological structure model of the mine excavation space network.

[0042] In this step, the combination of the existing topological characteristics of the mining space and the theory of fluid mechanics is relatively insufficient. In the process of water disaster simulation, the method of generalizing the mining space of the mine into a three-dimensional point-line network structure in the relevant technology, and then using the point-line adjacency relationship, graph theory and fluid mechanics methods for analysis and research was abandoned. Instead, a one-dimensional topological structure model of the mining space network of the mine was chosen. The one-dimensional topological structure is relatively simple, which can well show the state of the mine tunnel with the ups and downs of the coal seam. The low-lying and high-burst positions in its topological structure are obvious, making the flow process of the water burst after entering the mining space clearer.

[0043] Step 200: Based on the one-dimensional topological structure model, obtain the topological elements of the mine excavation space.

[0044] In this step, after the one-dimensional topological structure model is established, it is necessary to determine the positions of some specific terrains and key locations in the one-dimensional topological structure model according to the distribution structure of the mine excavation space, and distinguish and mark these specific terrains and key locations to provide a basis for the division of the subspace of the mine excavation space.

[0045] Step 300: Based on topological elements, the mining space of the mine is divided into multiple non-intersecting water control areas.

[0046] In this step, the mine excavation space is divided into different subspaces with the same properties - water control areas, to provide support for simulating the evolution of mine water disasters, and to divide the overall complex topological structure into multiple areas to improve the accuracy of the simulation results and avoid the impact of the complex topological structure of the mining space on the regional flood disaster simulation.

[0047] Step 400: Calculate the amount of water accumulation in each water control area.

[0048] In this step, the water accumulation volume of all tunnels and all goafs in a water control area is first calculated, and then the water accumulation volume of all tunnels and all goafs in the water control area is added up to obtain the water accumulation volume of the water control area. The larger the water accumulation volume, the stronger its water accumulation capacity.

[0049] Step 500: Based on the known water inrush points and the amount of water accumulated in all water control areas, simulate the evolution of the mine water disaster.

[0050] In this step, after the boundary point of the water control area where the flood occurred is flooded, the water inrush spreads across its boundary point to the adjacent water control area. The flooding process of the adjacent water control area is also controlled by the cumulative water inrush volume. If the adjacent water control area is also flooded to the boundary point elevation, the two water control areas can be combined for analysis, and the water level rises together with the increase of the cumulative water inrush volume.

[0051] In some embodiments, Figure 2 As shown in the figure, a one-dimensional topological structure model of the mine mining space network is constructed, which specifically includes:

[0052] Step 110: Abstract the key sections of the tunnels in the mine excavation space into nodes.

[0053] In this step, the key sections of the tunnels in the mining space refer to the locations where the tunnels change slope, bifurcate, or where the cross-sectional shape or size changes. These locations have topographic changes, and water inrush generally changes in these locations during the spreading process. Abstracting them as nodes for simulation analysis is more representative. Figure 3 As shown, as a one-dimensional topological structure model of an exemplary mine excavation space, the exemplary one-dimensional topological structure model includes multiple nodes: 0-52.

[0054] Step 120: Abstract the lane between two adjacent nodes into a segment.

[0055] In this step, in the mining space, the tunnel connecting two key sections has a relatively regular shape, and the terrain changes in the tunnel are small. This part of the tunnel can be abstracted as a segment connecting adjacent nodes. The topological structure of the mining space can be represented by an undirected graph: G = (V, E), where V is the set of all nodes in the network topology, and E is the set of all segments. Figure 3As shown, the exemplary one-dimensional topological structure model includes a plurality of lane segments connecting adjacent nodes, for example: {0-1}, {2-3}, {16-17}, etc.

[0056] Step 130: generalize the mine excavation space into a topological structure composed of nodes and segments to obtain a one-dimensional topological structure model, in which the cross section and inclination of each segment are the same.

[0057] In this step, all nodes and all segments are combined accordingly, so that the mining space is generalized into a one-dimensional topological structure model composed of nodes and segments. Figure 3 As shown, the segments connecting adjacent nodes in the one-dimensional topological structure model of this example are straight line segments, ignoring the influence of subtle terrain in the tunnels connecting different nodes in the mine mining space, and the tunnels are regarded as a whole with the same cross-section and inclination, abstracted as straight line segments.

[0058] In some embodiments, Figure 3 and Figure 4 As shown in the figure, the topological elements include: bifurcation points, broken line segments, endpoints, local highest flat areas, local lowest flat areas, local highest points and local lowest points. Based on the one-dimensional topological structure model, the topological elements of the mine excavation space are obtained, including:

[0059] Step 210: traverse the one-dimensional topological structure model to obtain all bifurcation points, wherein a bifurcation point is an intersection point of at least three adjacent segments.

[0060] In this step, by traversing the one-dimensional topological structure model, the intersections of three or more segments in the one-dimensional topological structure model are found, and these intersections are used as bifurcation points in the topological elements. Figure 3 As shown, in this example one-dimensional topology model, the bifurcation points are 5, 7, 24, 28, 39, 43 and 47.

[0061] Step 220: Based on the bifurcation points, the mine excavation space is divided into a plurality of broken line segments in the one-dimensional topological structure model, wherein the boundary points of the broken line segments are bifurcation points or endpoints.

[0062] In this step, bifurcation points and endpoints that can be used as boundary points are found in the one-dimensional topological structure model, and the one-dimensional topological structure model is split according to the boundary points to obtain the polyline segments in the topological elements. Figure 3As shown, in this example one-dimensional topology model, the endpoints are 0, 9, 12, 30, 32, 41, and 48; the broken line segments are {0-1-2-3-4-5}, {5-6-7}, {7-8-9}, {7-10-11-12}, {5-13-14-15-16-17-18-19-20-21-22-23-24}, {24 -25-26-27-28}, {28-29-30}, {28-31-32}, {24-33-34-35-36-37-38-39}, {39-40-41}, {39-42-43}, {43-44-45-46-47}, {43-49-50-51-52-47}, {47-48}.

[0063] Step 230: Determine the local highest flat area, the local lowest flat area, the local highest point and the local lowest point in the broken line segments and nodes.

[0064] In this step, if Figure 3 As shown, in this example one-dimensional topological structure model, the closer the point is to the top, the higher its absolute height is, the closer the point is to the bottom, the lower its absolute height is, and the points on the same horizontal line represent the same absolute height, forming a horizontal height area. In each broken line segment, the node with the highest absolute position is the local highest point, and the local highest point is represented by a triangle node in this example one-dimensional topological structure model. In each broken line segment, the node with the lowest absolute position is the local lowest point, and the local lowest point is represented by a rectangular node in this example one-dimensional topological structure model. In each broken line segment, if the absolute position is the highest in a region, the region with the highest absolute position is the local highest flat area. In each broken line segment, if the absolute position is the lowest in a region, the region with the lowest absolute position is the local lowest flat area. In this example one-dimensional topological structure model, the local lowest points are 9, 22, 30, and 41. The local highest points are 0, 32, and 48. The local highest flat areas are {11-12} and {14-15-16}. The local lowest flat areas are {2-3} and {35-36-37}.

[0065] In some embodiments, Figure 5 As shown in the figure, based on the topological elements, the mining space of the mine is divided into multiple non-intersecting water control areas, including:

[0066] Step 310: Start searching uphill from the local lowest point or the local lowest flat area.

[0067] In this step, when a flood occurs, the water will first flow to the mine area corresponding to the local lowest point or the local lowest flat area due to gravity, so the local lowest point or the local lowest flat area is selected as the starting point to search uphill toward the adjacent nodes. Figure 3 As shown in the example one-dimensional topological structure model, it can be seen that a rectangular node representing the local lowest point or a line segment consisting of horizontally continuous rectangular nodes representing the local lowest flat area is selected as the starting point, and the search direction is indicated by using a line segment with an arrow. In the local lowest flat area, any node can be used as the starting point.

[0068] Step 320: In response to determining that a local highest point or a local highest flat area is encountered during the uphill search, stop the uphill search.

[0069] In this step, when a flood occurs, when the water burst spreads to the mine area corresponding to the local highest point or the local highest flat area, the flow of the water burst will change significantly, so the local highest point or the local highest flat area is selected as the partial stop point for the uphill search. Figure 3 As shown in the example one-dimensional topological structure model, it can be seen that part of the uphill search process stops at the triangle node representing the local highest point or the line segment composed of horizontally continuous triangle nodes representing the local highest flat area. Among them, in the local highest flat area without endpoints, any node can be used as a stop point; in the local highest flat area with endpoints, the endpoint is used as a stop point.

[0070] Step 330: In response to determining that a bifurcation point is encountered during the uphill search, and the number of branches traversed by the uphill search is equal to the number of downhill branches, the bifurcation point is a normal bifurcation point, and the uphill search continues, wherein the downhill branch is a broken line connecting the node at a high position and the node at a low position.

[0071] Step 340: In response to determining that a bifurcation point is encountered during the uphill search, and the number of branches traversed by the uphill search is less than the number of downhill branches, the bifurcation point is an absolute bifurcation point, the uphill search is stopped, a water control area is obtained, and a new water control area is divided again from the absolute bifurcation point.

[0072] Among them, when a flood occurs, when the sudden water spreads to the bifurcation point, the flow condition of the sudden water will also change significantly, so some bifurcation points that meet the conditions are selected as partial stopping points for the uphill search. These bifurcation points that meet the conditions, the local highest points and the local highest flat areas constitute all the stopping points.

[0073] The relationship between the number of branches in each uphill search and the number of downhill branches is used to determine whether the bifurcation point meets the requirement of being a stop point. When a bifurcation point is encountered during an uphill search, if the number of branches passed by the uphill search is equal to the number of downhill branches, it is determined that the bifurcation point does not meet the requirement of being a stop point, and the bifurcation point is a normal bifurcation point, and the uphill search continues along all the uphill branches connected to the bifurcation point. Figure 3As shown, in this example one-dimensional topology model, the normal bifurcation points are 5, 43, and 47. Starting from node 2, the uphill search is performed along the path {2-3-4-5}. When the uphill search encounters bifurcation point 5, there is only one {2-3-4-5} for this uphill search, and only one {5-4-3-2} for the downhill branch of the bifurcation point. Therefore, the number of downhill branches of bifurcation point 5 is equal to the number of branches of this uphill search. It is a normal bifurcation point and cannot be used as a stop point for dividing water control areas.

[0074] Among them, the bifurcation point 43 has only one uphill branch {39-42-43} and only one downhill branch {43-42-39}, so the number of downhill branches of the bifurcation point 43 is equal to the number of uphill branches. It is a normal bifurcation point and cannot be used as a stop point for dividing the water control area. For bifurcation point 47, since bifurcation point 43 will not stop the uphill search started from node 39, when encountering bifurcation point 47, the number of branches of this uphill search is two, namely {43-44-45-46-47} and {43-49-50-51-52-47}, and the number of downhill branches of bifurcation point 47 is also two, namely: {47-46-45-44-43} and {47-52-51-50-49-43}, so the number of downhill branches of bifurcation point 47 is equal to the number of branches of its uphill search. It is a normal bifurcation point and cannot be used as a stopping point for dividing the water control area.

[0075] Among them, when a bifurcation point is encountered during a certain uphill search, if the number of branches passed by the uphill search is less than the number of downhill branches, the bifurcation point is determined to be an absolute bifurcation point, the uphill search is stopped, the broken line segment from the starting point to the stop point is used as a water control area, and a new water control area is divided again from the absolute bifurcation point. Figure 3 As shown, in this example one-dimensional topological structure model, the absolute bifurcation points are 7, 24, 28, and 39. Starting from node 2, an uphill search is performed along the path {2-3-4-5-6-7}. When the uphill search encounters bifurcation point 7, there is only one uphill search {2-3-4-5-6-7}, while the downhill branches of the bifurcation point are {7-6-5-4-3-2} and {7-8-9}. Therefore, the number of downhill branches of bifurcation point 7 is greater than the number of branches of the uphill search. It is an absolute bifurcation point and can be used as a stop point for dividing the water control area.

[0076] Among them, starting from 22, there is one uphill search branch to bifurcation point 24, {22-23-24}, and two downhill branches, {24-23-22} and {24-33-34-35-36}, so the number of downhill branches of bifurcation point 24 is greater than the number of branches of this uphill search, and it is an absolute bifurcation point, which can be used as a stop point for dividing water control areas. Starting from 41, there is one uphill search branch to bifurcation point 39, {41-40-39}, and two downhill branches, {39-40-41} and {39-38-37-36}, so the number of downhill branches of bifurcation point 39 is greater than the number of branches of this uphill search, and it is an absolute bifurcation point, which can be used as a stop point for dividing water control areas.

[0077] Among them, for bifurcation point 28, since bifurcation point 24 is an absolute bifurcation point, the water control area will be re-divided from the absolute bifurcation point, that is, the absolute bifurcation point 24 will be used as the starting point of the new water control area to search uphill. Therefore, when encountering bifurcation point 28, there is one branch number for this uphill search, which is {24-25-26-27-28}, and there are two downhill branches for bifurcation point 28, which are: {28-29-30} and {28-27-26-25-24}, respectively. Therefore, the number of downhill branches of bifurcation point 28 is greater than the number of branches of its uphill search, and it is an absolute bifurcation point, which can also be used as a stop point for dividing water control areas.

[0078] Step 350: In response to determining that the uphill search based on the one-dimensional topological structure model is finished, the water control area is divided.

[0079] In this step, when the entire one-dimensional topological structure model is searched on the mountain, the water control area is divided. Figure 3 As shown, in this example one-dimensional topological structure model, the one-dimensional topological structure model is divided into ten water control areas by taking the local highest point, the local highest flat area and the absolute bifurcation point as separation points, including: {0-1-2-3-4-5-6-7-13-14-15}, {24-33-34-35-36-37-38-39}, {7-10-11-12}, {15-16-17-18-19-20-21-22-23-24}, {24-25-26-27-28}, {28-29-30}, {28-31-32}, {39-42-43-44-45-46-49-50-51-52-47-48}, {7-8-9}, {39-40-41}.

[0080] In some embodiments, Figure 6 As shown, calculate the amount of water accumulation in each water control area, including:

[0081] Step 410: Calculate the amount of water accumulation in the lanes within the water control area.

[0082] In this step, as Figure 7a shown, if the roadway dip angle α satisfies h·cosα < l·sinα, it indicates that the roadway is a nearly vertical roadway. The water accumulation in the roadway is calculated through the formula

[0083]

[0084] ;

[0085] As Figure 7b shown, if the roadway dip angle α satisfies h·cosα ≥ l·sinα, it indicates that the roadway is a nearly horizontal roadway. The water accumulation in the roadway is calculated through the formula

[0086]

[0087] ;

[0088] where V is the water accumulation in the roadway, w is the width of the roadway cross-section, h is the height of the roadway, l is the length of the roadway, x is the water level elevation, x0 is the elevation of the lower point of the roadway, α is the roadway dip angle, and 0° ≤ α ≤ 90°. Among them, Figure 7b in, x1 represents the elevation of the higher point of the roadway.

[0089] Step 420: Calculate the water accumulation in the goaf within the water control area.

[0090] In this step, as Figure 8a shown, for the goaf with the same coal seam dip angle θ, the formula

[0091]

[0092] can be used to calculate the water accumulation in the goaf. Among them, V g is the water accumulation in the goaf, S is the mining area, H is the mining height, H C is the caving zone height, θ is the coal seam dip angle, and K is the filling coefficient, usually 0.2 ≤ K ≤ 0.35.

[0093] As Figure 8b shown, for the goaf with different coal seam dip angles θ, according to the coal seam dip angle θ, the goaf is divided into multiple sub-goafs. Through the formula

[0094]

[0095] the water accumulation in each sub-goaf is calculated respectively, and the water accumulations of all sub-goafs are summed up to obtain the water accumulation in the goaf, that is, the goaf S is divided into S1, S2, and S3, the water accumulations of S1, S2, and S3 are calculated respectively, and then the water accumulations of S1, S2, and S3 are summed up to obtain the water accumulation in the goaf S.

[0096] Step 430: The water accumulation in all tunnels and all goafs in the water control area are added together to obtain the water accumulation in the water control area.

[0097] In this step, the water accumulation in all tunnels and all goafs within the water control area is added together to obtain the water accumulation in the water control area. The value of the water accumulation can be used to measure the water accumulation capacity of different water control areas.

[0098] In some embodiments, Fig. 9 As shown in the figure, based on the known water inrush points and the amount of water accumulated in all water control areas, the evolution of mine water disasters is simulated, including:

[0099] Step 510: Based on the location of the water inrush point, determine the target water control area where the water disaster occurs.

[0100] In this step, the water control area where the water burst point is located is determined according to the nodes included in the divided water control area. When the water burst point is a boundary point of multiple water control areas, the water control area where the water disaster occurs is the water control area containing the boundary point, and these water control areas are all target water control areas. When the water burst point is other nodes, these nodes are all located inside the water control area, then there is only one water control area where the water disaster occurs, and the target water control area is the water control area containing the water burst point node.

[0101] Step 520: Based on the amount of water accumulation in the target water control area, simulate the evolution process of water inrush in the target water control area.

[0102] In this step, after entering the mining space of the mine, the water inrush first floods the local lowest point or the local lowest flat area in the target water control area, and then the water level continues to rise, and the cumulative water inrush volume determines the flooded water level. When the cumulative water inrush volume is less than the water accumulation in the target water control area, the flooded water level rises with the increase of the cumulative water inrush volume. When the cumulative water inrush volume increases to be equal to the water accumulation in the target water control area, the water inrush floods the boundary point between the target water control area and other adjacent water control areas, and the flooded water level of the target water control area reaches the maximum value (the maximum value is the height of the boundary point connected to the adjacent water control area). Before the water inrush floods the boundary point between the target water control area and other adjacent water control areas, the water disaster of the water inrush will not spread to other water control areas, and it is only necessary to simulate the evolution process of the water inrush in the target water control area.

[0103] Step 530: In response to determining that the boundary point of the target water control area is flooded, based on the amount of water accumulation in the water control areas adjacent to the target water control area, simulate the evolution process of water inrush between the water control areas.

[0104] In this step, when the boundary point of the target water control area where the water disaster occurs is flooded, the water inrush passes over the boundary point of the target water control area and spreads to the adjacent water control area. The flooding process of the adjacent water control area is also controlled by the cumulative water inrush. When the water inrush does not flood the boundary point of the adjacent water control area, the water disaster situation of the adjacent water control area is analyzed separately. If the adjacent water control area is first flooded to the elevation of the boundary point connecting the target water control area and the adjacent water control area, the target water control area and the adjacent water control area are combined for analysis. As the cumulative water inrush increases, the flooded water levels of the target water control area and the adjacent water control area rise together. If the adjacent water control area is first flooded to the elevation of the boundary point that is not connected to the target water control area, that is, in the adjacent water control area, the elevation of the boundary point connected to the target water control area is greater than the elevation of the boundary point that is not connected to the target water control area, the water inrush will first spread to another water control area, and its simulation method is consistent with that of the adjacent water control area.

[0105] An exemplary description of steps 510 to 530 is as follows:

[0106] like Fig.10 As shown, a mine with 1865 nodes and 1936 segments is selected, of which there are 74 local highest points or local highest flat areas, 71 local lowest points or local lowest flat areas and 55 absolute bifurcation points. The water control area is divided according to the local highest point, the local highest flat area and the absolute bifurcation point, and the mining space of the mine can be divided into 125 water control areas. Optionally, in the actual application process, the water control area can be colored with red, green, blue and black, and all local highest points (black dots), local lowest points (green dots) and absolute bifurcation points (red dots) in the roadway can be marked, among which ordinary nodes can be marked with blue dots, local highest flat areas can be marked with continuous black dots, and local lowest flat areas can be marked with continuous green dots.

[0107] Further, Fig.10 The spatial structure and node numbers of the one-dimensional topological structure model of the southern wing of the mining area are shown in Fig.11a and Fig.11b As shown, Fig.11a This is a partial plan view of the one-dimensional topological structure model of the entire southern wing of the mining area. Fig.11b for Fig.11a The evolution process of water inrush disaster in the south wing of the mining area is as follows: if water inrush occurs at node 590, the target water control area {549-596-590} will be flooded first, and then, as the cumulative water inrush volume increases, the flooded water level will continue to rise. 3When the flooding water level of the target water control area {549-596-590} reaches the maximum value - the elevation value of the boundary point 596, the water inrush floods the boundary point 596 of the target water control area {549-596-590}. The water inrush begins to enter the adjacent water control area {332-350-596}, and the adjacent water control area {332-350-596} begins to accumulate water and is gradually flooded. When the cumulative water inrush reaches 3627m 3 When the water inrush reaches the boundary point 350, the water inrush begins to enter the water control area {343-350-288-339-600}. As the cumulative water inrush volume continues to increase, the water control area {343-350-288-339-600} begins to accumulate water and is gradually submerged. 3 When the two adjacent water control areas {332-350-596} and {343-350-288-339-600} were flooded to the boundary point 350, the water levels of the water control areas {332-350-596} and {343-350-288-339-600} began to rise together. 3 When the cumulative water inrush volume reaches 17993m 3 When the cumulative water inrush reaches 19894m 3 When the cumulative water inrush reaches 47170m 3 When the water burst spreads beyond node 339, Fig.11a The range shown, i.e., the southern wing of the mining area, is almost completely flooded, with only node 600 and the adjacent part remaining unflooded, wherein node 590 and node 550 are endpoints. After all the node spaces are flooded, the inrush water cannot spread across nodes 590 and 550.

[0108] The flooding range is determined based on the cumulative water inrush and the amount of water accumulated in each water control area, and the disaster spread time is estimated. Fig.11bThe water accumulation corresponding to ①, ②, ③, ④, ⑤, ⑥, and ⑦ are important time nodes, and emergency rescue and disposal decisions are guided according to these important time nodes and the spread of water inrush. Therefore, the simulation method for the evolution of water inrush disasters based on the mine water control area provided in this application can quickly and accurately calculate the evolution process of mine water disasters according to different water inrush conditions, provide data basis for emergency plan design, emergency drills, rescue and disposal, and has strong operability.

[0109] 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 this embodiment 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.

[0110] It should be noted that the above describes some 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.

[0111] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a device for simulating the evolution of sudden water disasters based on a mine water control area.

[0112] refer to Fig.12 The device for simulating the evolution of flood disaster based on the mine water control area comprises:

[0113] The model building module 10 is configured to: build a one-dimensional topological structure model of the mine excavation space network;

[0114] The element calculation module 20 is configured to: obtain the topological elements of the mine excavation space based on the one-dimensional topological structure model;

[0115] The water control area division module 30 is configured to: divide the mining space of the mine into a plurality of non-intersecting water control areas based on topological elements;

[0116] The water accumulation calculation module 40 is configured to: calculate the water accumulation in each water control area;

[0117] The simulation drill module 50 is configured to simulate the evolution of the mine water disaster based on the preset water inrush points and the amount of water accumulated in all water control areas.

[0118] For the convenience of description, the above device is described in terms of functions divided into various modules. Of course, when implementing the present application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0119] The device of the above embodiment is used to implement the corresponding method for simulating the evolution of water inrush disaster based on the mine water control area in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0120] Based on the same inventive 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 simulating the evolution of sudden water disasters based on a mine water control area as described in any of the above embodiments is implemented.

[0121] Fig.13 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.).

[0126] 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).

[0127] 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.

[0128] The electronic device of the above embodiment is used to implement the corresponding method for simulating the evolution of water inrush disaster based on the mine water control area in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0129] Based on the same inventive 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 simulating the evolution of sudden water disasters based on the mine water control area as described in any of the above embodiments.

[0130] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented 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, magnetic tape magnetic 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.

[0131] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the method for simulating the evolution of water inrush disasters based on the mine water control area as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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 simulating the evolution of flood disasters based on a mine water control area, characterized in that: Including: Constructing a one-dimensional topological structure model of the mine excavation space network; Based on the one-dimensional topological structure model, obtaining the topological elements of the mine excavation space; Based on the topological elements, dividing the mine excavation space into multiple non-overlapping water control areas; Calculating the water accumulation volume of each water control area; Based on the known water inrush points and the water accumulation volumes of all the water control areas, simulating the evolution process of mine water disaster; Among them, the calculating the water accumulation volume of each water control area includes: Calculating the water accumulation volume of each roadway in the water control area; Calculating the water accumulation volume of each goaf in the water control area; Adding up all the water accumulation volumes of the roadways and all the water accumulation volumes of the goafs in the water control area to obtain the water accumulation volume of the water control area; Among them, the calculating the water accumulation volume of each roadway in the water control area includes: In response to determining that the roadway dip angle α satisfies h·cosα < l·sinα, the roadway is a nearly vertical roadway, and through the formula Calculating the water accumulation volume of the roadway; In response to determining that the roadway dip angle α satisfies h·cosα ≥ l·sinα, the roadway is a nearly horizontal roadway, and through the formula Calculating the water accumulation volume of the roadway; Wherein, V is the water accumulation volume of the roadway, w is the roadway section width, h is the roadway height, l is the roadway length, x is the water level elevation, x0 is the elevation of the lower point of the roadway, α is the roadway dip angle, and 0° ≤ α ≤ 90°; Among them, the calculating the water accumulation volume of each goaf in the water control area includes: Through the formula Calculate the water volume in the goaf, where V g is the amount of water accumulated in the goaf, S is the mining area, H is the mining height, and H C is the height of the collapse zone, θ is the inclination of the coal seam, K is the filling coefficient, and 0.2≤K≤0.

35.

2. The method according to claim 1, characterized in that The constructing the one-dimensional topological structure model of the mine excavation space network includes: Abstracting the key sections of the roadways in the mine excavation space into nodes; Abstracting the roadway between two adjacent nodes into a segment; Generalizing the mine excavation space into a topological structure composed of the nodes and the segments to obtain the one-dimensional topological structure model, wherein the cross-section and dip angle of each segment are the same.

3. The method according to claim 2, characterized in that The topological elements include: bifurcation points, broken line segments, end points, local highest flat areas, local lowest flat areas, local highest points and local lowest points. The obtaining the topological elements of the mine excavation space based on the one-dimensional topological structure model includes: Traversing the one-dimensional topological structure model to obtain all the bifurcation points, where the bifurcation point is the intersection of at least three adjacent segments; Based on the bifurcation points, dividing the mine excavation space into multiple broken line segments in the one-dimensional topological structure model, where the boundary points of the broken line segments are the bifurcation points or end points; Determining the local highest flat area, local lowest flat area, local highest point and local lowest point among the broken line segments and the nodes.

4. The method according to claim 3, characterized in that: The dividing the mine excavation space into multiple non-overlapping water control areas based on the topological elements includes: Starting an uphill search from the local lowest point or the local lowest flat area; In response to determining that the local highest point or the local highest flat area is encountered during the uphill search, stopping the uphill search; In response to determining that the bifurcation point is encountered during the uphill search process, and the number of branches passed through during this uphill search is equal to the number of downhill branches, the bifurcation point is a normal bifurcation point, and the uphill search continues, where the downhill branch is a broken line connecting the node at the higher position and the node at the lower position; In response to determining that the bifurcation point is encountered during the uphill search process, and the number of branches passed through during this uphill search is less than the number of downhill branches, the bifurcation point is an absolute bifurcation point, stop this uphill search, obtain a water control area, and start dividing a new water control area from the absolute bifurcation point; In response to determining that the uphill search based on the one-dimensional topological structure model ends, the division of the water control area is completed.

5. The method according to claim 1, characterized in that Based on the known water inrush points and the water accumulation volume of all the water control areas, simulate the evolution process of the mine water disaster situation, specifically including: Based on the position of the water inrush point, determine the target water control area where the water disaster occurs; Based on the water accumulation volume of the target water control area, simulate the evolution process of water inrush within the target water control area; In response to determining that the boundary points of the target water control area are flooded, based on the water accumulation volume of the water control areas adjacent to the target water control area, simulate the evolution process of the water inrush between the water control areas.

6. A device for simulating the evolution of flood disasters based on the water control area of ​​a mine, characterized in that: Including: A model construction module configured to construct a one-dimensional topological structure model of the mine excavation space network; A feature calculation module configured to obtain the topological features of the mine excavation space based on the one-dimensional topological structure model; A water control area division module configured to divide the mine excavation space into multiple non-overlapping water control areas based on the topological features; A water accumulation volume calculation module configured to calculate the water accumulation volume of each water control area; Wherein, calculating the water accumulation volume of each water control area includes: Calculating the water accumulation volume of each roadway within the water control area; Calculating the water accumulation volume of each goaf within the water control area; Performing a summation calculation on all the water accumulation volumes of the roadways and all the water accumulation volumes of the goafs within the water control area to obtain the water accumulation volume of the water control area; Wherein, calculating the water accumulation volume of each roadway within the water control area includes: In response to determining that the roadway dip angle α satisfies h·cosα < l·sinα, the roadway is a nearly vertical roadway, and through the formula Calculate the water accumulation volume of the roadway; In response to determining that the roadway dip angle α satisfies h·cosα ≥ l·sinα, the roadway is a nearly horizontal roadway, and through the formula Calculate the water accumulation volume of the roadway; Where V is the water accumulation volume of the roadway, w is the roadway section width, h is the roadway height, l is the roadway length, x is the water level elevation, x0 is the elevation of the lower point of the roadway, α is the roadway dip angle, and 0° ≤ α ≤ 90°; Wherein, calculating the water accumulation volume of each goaf within the water control area includes: Through the formula Calculate the water volume in the goaf, where V g is the amount of water accumulated in the goaf, S is the mining area, H is the mining height, and H C is the height of the collapse zone, θ is the inclination of the coal seam, K is the filling factor, 0.2≤K≤0.35; A simulation exercise module configured to simulate the evolution process of the mine water disaster situation based on the preset water inrush points and the water accumulation volume of all the water control areas.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 5 when executing the program.

Images