Method and device for determining arrangement strategy of roadway and electronic equipment

Abstract

The invention discloses a method and a device for determining an arrangement strategy of a roadway and electronic equipment. The method comprises the steps that mechanical characteristic information and geologic characteristic information of at least one coal seam are obtained, the mechanical characteristic information represents the stability degree of the coal seam under the action of different forces, and the geologic characteristic information represents the stability degree of the structure of the coal seam; based on the mechanical characteristic information and the geological characteristic information, a three-dimensional numerical model of the at least one coal seam is constructed, and the three-dimensional numerical model is used for simulating displacement generated when the at least one coal seam is subjected to different forces in the vertical direction; determining a target coal seam from the at least one coal seam based on the three-dimensional numerical model, and determining a plurality of arrangement strategies for the target coal seam; and respectively evaluating the plurality of arrangement strategies to obtain corresponding evaluation results, and determining a target arrangement strategy from the plurality of arrangement strategies based on the evaluation results. The technical problem that the accuracy of determining the arrangement strategy of the roadway is low is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, and in particular to a method, a device and an electronic device for determining a layout strategy of a tunnel. Background Art

[0002] At present, in the process of coal mining, the tunnel is the passage in coal mining, and the tunnel layout is an important part of coal mining. The tunnel layout method is often based on the experience of engineers and the actual situation on site. The experience of engineers and the actual situation on site may be affected by external factors, such as time, cost, personnel and other limitations. The lack of systematic theoretical guidance and scientific optimization methods leads to low reliability and accuracy of the layout plan. Therefore, there is still a technical problem of low accuracy in determining the layout strategy of the tunnel.

[0003] Currently, no effective solution has been proposed for the above technical problems. Summary of the invention

[0004] The embodiments of the present invention provide a method, device and electronic device for determining a lane layout strategy, so as to at least solve the technical problem of low accuracy in determining the lane layout strategy.

[0005] According to one aspect of an embodiment of the present invention, a method for determining a layout strategy of a tunnel is provided. The method may include: obtaining mechanical characteristic information and geological characteristic information of at least one coal seam, wherein the mechanical characteristic information is used to indicate the stability of the coal seam under different forces, and the geological characteristic information is used to indicate the stability of the structure of the coal seam; constructing a three-dimensional numerical model of at least one coal seam based on the mechanical characteristic information and the geological characteristic information, wherein the three-dimensional numerical model is used to simulate the displacement of at least one coal seam caused by different forces in the vertical direction; determining a target coal seam from at least one coal seam based on the three-dimensional numerical model, and determining a plurality of layout strategies for the target coal seam, wherein the layout strategy is used to indicate the rules for arranging tunnels in the corresponding horizontal direction on the target coal seam; evaluating the plurality of layout strategies respectively, obtaining corresponding evaluation results, and determining a target layout strategy from the plurality of layout strategies based on the evaluation results, wherein the evaluation results are used to indicate the danger level of the surrounding rock of the tunnel under the impact of the force, and the danger level of the target layout strategy is lower than the danger level threshold.

[0006] Optionally, the geological characteristic information includes at least the thickness and inclination of the coal seam, and the mechanical characteristic information includes at least the bulk modulus, shear modulus, tensile strength, cohesion, internal friction angle and bulk density of the coal seam.

[0007] Optionally, based on the mechanical characteristic information and the geological characteristic information, a three-dimensional numerical model of at least one coal seam is constructed, including: constructing an initial three-dimensional numerical model based on thickness, inclination, bulk modulus, shear modulus, tensile strength, cohesion, internal friction angle and bulk density; adjusting the horizontal displacements on both sides of the initial three-dimensional numerical model to simulate the displacements caused by different forces, and adjusting the bottom edge of the initial three-dimensional numerical model to limit the horizontal and numerical displacements; in response to the adjustment of the initial three-dimensional numerical model being completed and the model being in equilibrium, determining the three-dimensional numerical model.

[0008] Optionally, based on the three-dimensional numerical model, a target coal seam is determined from at least one coal seam, including: based on the three-dimensional numerical model, simulating the mechanical behavior of the coal seam in the numerical direction, and evaluating the force, energy and displacement in the numerical direction during the simulation process to obtain a first evaluation result; based on the first evaluation result, the target coal seam is determined from at least one coal seam.

[0009] Optionally, the force in the vertical direction includes vertical stress, the force in the horizontal direction includes horizontal stress, and the evaluation results include vertical stress evaluation results, horizontal stress evaluation results, surrounding rock energy evaluation results and surrounding rock lateral deformation evaluation results, wherein the vertical stress evaluation results are used to represent the distribution of vertical stress of different surrounding rocks, the horizontal stress evaluation results are used to represent the distribution of horizontal stress of different surrounding rocks, the surrounding rock energy evaluation results are used to represent the energy distribution of different surrounding rocks, and the surrounding rock lateral deformation evaluation results are used to represent the lateral deformation of different surrounding rocks.

[0010] Optionally, based on the evaluation results, a target layout strategy is determined from multiple layout strategies, including: determining an impact hazard index of the layout strategy based on vertical stress evaluation results, horizontal stress evaluation results, surrounding rock energy evaluation results and surrounding rock lateral deformation evaluation results, wherein the impact hazard index is used to indicate the degree of hazard of the impact; based on the impact hazard index, determining a target layout strategy from multiple layout strategies.

[0011] Optionally, based on the impact risk index, determining a target layout strategy from a plurality of layout strategies includes: determining a layout strategy corresponding to a minimum value among the plurality of impact risk indexes as the target layout strategy.

[0012] According to another aspect of an embodiment of the present invention, a device for determining the layout strategy of a roadway is also provided. The device may include: an acquisition unit, used to acquire mechanical characteristic information and geological characteristic information of at least one coal seam, wherein the mechanical characteristic information is used to indicate the stability of the coal seam under different forces, and the geological characteristic information is used to indicate the stability of the structure of the coal seam; a construction unit, used to construct a three-dimensional numerical model of at least one coal seam based on the mechanical characteristic information and the geological characteristic information, wherein the three-dimensional numerical model is used to simulate the displacement of at least one coal seam caused by different forces in the vertical direction; a first determination unit, used to determine a target coal seam from at least one coal seam based on the three-dimensional numerical model, and determine a plurality of layout strategies for the target coal seam, wherein the layout strategy is used to indicate the rules for arranging roadways in the corresponding horizontal direction on the target coal seam; a second determination unit, used to evaluate the plurality of layout strategies respectively, obtain corresponding evaluation results, and determine a target layout strategy from the plurality of layout strategies based on the evaluation results, wherein the evaluation results are used to indicate the danger level of the surrounding rock of the roadway under the impact of the force, and the danger level of the target layout strategy is lower than the danger level threshold.

[0013] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute a method for determining a lane layout strategy.

[0014] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method for determining the lane layout strategy of the present invention.

[0015] According to another aspect of an embodiment of the present invention, a processor is provided, which is used to run a program, wherein when the program is run, the method for determining the layout strategy of lanes according to an embodiment of the present invention is executed.

[0016] According to another aspect of an embodiment of the present invention, a computer program product is provided, which includes a computer program, and when the computer program is executed by a processor, the method for determining the lane layout strategy of the embodiment of the present application is implemented.

[0017] In an embodiment of the present invention, by acquiring mechanical characteristic information and geological characteristic information of at least one coal seam, a three-dimensional numerical model of at least one coal seam is constructed based on the mechanical characteristic information and the geological characteristic information, a target coal seam is determined from at least one coal seam based on the three-dimensional numerical model, and multiple layout strategies are determined for the target coal seam, and multiple layout strategies are evaluated respectively to obtain corresponding evaluation results, and based on the evaluation results, a target layout strategy is determined from multiple layout strategies. In this embodiment, by constructing a three-dimensional numerical model of the coal seam, simulating the mechanical behavior under different tunnel layout strategies in the horizontal direction, evaluating the safety and efficiency of each layout strategy, and thus selecting an excellent tunnel layout strategy, not only can the empirical errors in the relevant methods be avoided, and the scientificity and rationality of the tunnel layout be improved, but also the interaction and influence between multiple factors can be comprehensively considered to achieve the accuracy of the comprehensive optimization of the tunnel, thereby achieving the technical effect of improving the accuracy of the tunnel layout strategy determination, and solving the technical problem of low accuracy of the tunnel layout strategy determination. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 is a flow chart of a method for determining a lane layout strategy according to an embodiment of the present invention;

[0020] Figure 2 This is a flow chart of a method for optimizing the horizontal position of a steeply inclined and extremely thick coal seam roadway based on numerical simulation according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of a numerical model of B1+2 and B3+6 coal seams according to an embodiment of the present invention;

[0022] FIG4( a ) is a schematic diagram of a vertical stress distribution cloud diagram according to an embodiment of the present invention;

[0023] FIG4( b ) is a schematic diagram of a horizontal stress distribution cloud diagram according to an embodiment of the present invention;

[0024] FIG5( a ) is a schematic diagram of a vertical stress curve according to an embodiment of the present invention;

[0025] FIG5( b ) is a schematic diagram of a horizontal stress curve according to an embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the elastic energy density distribution characteristics of the surrounding rock before tunneling in a B3+6 coal seam according to an embodiment of the present invention;

[0027] Figure 7 is a schematic diagram of elastic energy curve distribution characteristics of surrounding rock of a B3+6 coal seam according to an embodiment of the present invention;

[0028] Figure 8 It is a schematic diagram of the maximum displacement distribution characteristics of the surrounding rock before tunneling in a B3+6 coal seam according to an embodiment of the present invention;

[0029] Fig. 9 is a schematic diagram of a maximum displacement curve distribution feature of surrounding rock below a B3+6 coal seam according to an embodiment of the present invention;

[0030] Fig.10 is a schematic diagram of a lane arrangement scheme at different positions in the horizontal direction according to an embodiment of the present invention;

[0031] Fig.11 is a schematic diagram of horizontal stress distribution of surrounding rock in a tunnel under different schemes according to an embodiment of the present invention;

[0032] Fig.12 is a schematic diagram of a horizontal stress curve of the upper and lower sides of the surrounding rock of a tunnel according to an embodiment of the present invention;

[0033] Fig.13 is a schematic diagram of vertical stress distribution of surrounding rock in a tunnel under different schemes according to an embodiment of the present invention;

[0034] Fig.14 is a schematic diagram of a vertical stress curve of surrounding rock along the X direction according to an embodiment of the present invention;

[0035] Fig.15 is a schematic diagram of energy distribution of surrounding rock in a tunnel under different schemes according to an embodiment of the present invention;

[0036] Fig.16 is a schematic diagram of lateral deformation of surrounding rock in a tunnel under different schemes according to an embodiment of the present invention;

[0037] Fig.17 is a schematic diagram of a horizontal displacement variation curve of surrounding rock in a tunnel according to an embodiment of the present invention;

[0038] Fig.18 is a schematic diagram of a rock burst hazard index of surrounding rock of B3 tunnel according to an embodiment of the present invention;

[0039] Fig.19 is a schematic diagram of a rock burst hazard index of surrounding rock of B6 tunnel according to an embodiment of the present invention;

[0040] Fig. 20 It is a schematic diagram of a device for determining a lane layout strategy according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] According to an embodiment of the present invention, an embodiment of a method for determining a lane layout strategy is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0044] Figure 1 is a flow chart of a method for determining a lane layout strategy according to an embodiment of the present invention, such as Figure 1 As shown, the method may include the following steps:

[0045] Step S102, obtaining mechanical characteristic information and geological characteristic information of at least one coal seam.

[0046] In the technical solution provided in the above step S102 of the present invention, the mechanical characteristic information can be used to indicate the stability of the coal seam under the action of different forces, for example, it can be bulk modulus, shear modulus, tensile strength, cohesion, internal friction angle, bulk density, etc. The geological characteristic information can be used to indicate the stability of the structure of the coal seam, for example, it can be the thickness and inclination of the coal seam. The coal seam can be a steeply inclined and thick coal seam, for example, the inclination of the coal seam is greater than 45°, or even the inclination of the coal seam is greater than 60° or 70°, and the coal seam with a thickness greater than a certain value (for example, 10 meters or 15 meters) can be a steeply inclined coal seam.

[0047] In this embodiment, if it is necessary to determine the layout strategy of the tunnel where the coal seam is located during the coal seam mining process, the mechanical characteristic information and geological characteristic information of at least one coal seam can be obtained.

[0048] Optionally, due to the low bulk modulus or small thickness of the coal seam during coal seam mining, the inaccuracy of the determination of the tunnel layout strategy where the coal seam is located will increase. Especially in the mining process of steeply inclined and thick coal seams, the thickness of the coal seam is small. If the bulk modulus of the coal seam is also low, the coal seam is more likely to accumulate energy during the stress redistribution process, increasing the risk of rock burst, and thus inaccurate in determining the layout strategy of the tunnel. Therefore, how to monitor the mechanical characteristic information and geological characteristic information of at least one coal seam in real time during the coal seam mining process to further determine the tunnel layout strategy is particularly important for avoiding the risk of rock burst during the mining process. That is, obtaining the mechanical characteristic information and geological characteristic information of the coal seam that is being mined can ensure the stability and safety of the mining process.

[0049] For example, the bulk modulus in the mechanical characteristic information of coal seams can be directly or indirectly calculated and obtained through core sampling, triaxial compression testing machine, microseismic monitoring, etc. The thickness of the geological characteristic information of coal seams can be obtained through geological exploration drilling, geological radar detectors, electromagnetic detectors, etc.

[0050] It should be noted that the above-mentioned method of obtaining the mechanical characteristic information and geological characteristic information of the coal seam is only for illustration and is not specifically limited here. As long as the information can be used to measure the stability of the coal seam under the action of different forces and the specific structure of the coal seam, and the corresponding acquisition method, they are within the protection scope of the embodiments of the present invention.

[0051] Step S104: constructing a three-dimensional numerical model of at least one coal seam based on the mechanical characteristic information and the geological characteristic information.

[0052] In the technical solution provided in the above step S104 of the present invention, after obtaining the mechanical characteristic information and geological characteristic information of at least one coal seam, a three-dimensional numerical model of at least one coal seam can be constructed based on the mechanical characteristic information and the geological characteristic information. The three-dimensional numerical model can be used to simulate the displacement of at least one coal seam caused by different forces in the vertical direction, and the force can be a vertical stress. The construction of the three-dimensional numerical model can be used to predict the deformation of the tunnel where the coal seam is located under complex geological conditions, and to evaluate the potential stability problems of the tunnel where the coal seam is located, thereby providing a basis for the scientific selection of the layout strategy of the tunnel where the coal seam is located.

[0053] In this embodiment, the physical and mechanical parameters of the three-dimensional numerical model can be set according to the mechanical characteristic information and geological characteristic information of the coal seam. Through the three-dimensional numerical model, the mechanical response of the coal seam under the action of different forces, such as displacement, stress distribution, etc., can be analyzed more intuitively and comprehensively. Geotechnical engineering numerical simulation software can be used to establish a three-dimensional numerical model. The three-dimensional numerical model can include the coal seam and the surrounding rock formations to ensure that the boundary conditions and initial conditions of the three-dimensional numerical model match the actual geological conditions.

[0054] Step S106: determining a target coal seam from at least one coal seam based on the three-dimensional numerical model, and determining a plurality of layout strategies for the target coal seam.

[0055] In the technical solution of step S106 of the present invention, after constructing a three-dimensional numerical model of at least one coal seam based on mechanical characteristic information and geological characteristic information, a target coal seam can be determined from at least one coal seam based on the three-dimensional numerical model, and multiple layout strategies can be determined for the target coal seam. The layout strategy can be used to represent the rules for arranging tunnels in the corresponding horizontal direction on the target coal seam, and can also be called a tunnel layout plan / layout plan. The target coal seam is also the most stable layer.

[0056] In this embodiment, in the three-dimensional numerical model, a stable and suitable coal seam for mining can be identified as a target coal seam based on the mechanical characteristic information and geological characteristic information of the coal seam. The selection of the target coal seam can be based on a comprehensive consideration of the three-dimensional numerical simulation results. Once the target coal seam is determined, multiple tunnel layout schemes in different horizontal directions can be designed for the coal seam, gradually improving the accuracy and reliability of determining the target coal seam and optimizing the tunnel layout strategy.

[0057] Optionally, the above layout strategies may include but are not limited to the depth, width, shape of the roadway, and the relationship between the roadway and the coal seam boundary (such as full coal roadway, half coal-rock roadway, rock roadway, etc.). Each layout strategy can be determined based on the analysis of the mechanical characteristics, geological characteristics information, mining history and environmental conditions of the coal seam, and the impact of different layouts on the stability and safety of the roadway can be explored.

[0058] Step S108 , respectively evaluating the multiple placement strategies to obtain corresponding evaluation results, and determining a target placement strategy from the multiple placement strategies based on the evaluation results.

[0059] In the technical solution provided in the above step S108 of the present invention, after determining the target coal seam from at least one coal seam based on the three-dimensional numerical model and determining multiple layout strategies for the target coal seam, the multiple layout strategies can be evaluated respectively to obtain corresponding evaluation results, and based on the evaluation results, the target layout strategy can be determined from the multiple layout strategies. The evaluation result is used to indicate the degree of danger of the surrounding rock of the tunnel under the impact of force, and the degree of danger of the target layout strategy is lower than the threshold value of the degree of danger. The evaluation result can be the evaluation result of the impact hazard index.

[0060] In this embodiment, the impact hazard index of the surrounding rock under different tunnel layout strategies can be calculated based on the three-dimensional numerical model to obtain an evaluation result. The impact hazard index can quantify the impact hazard of the tunnel surrounding rock through the ratio of the external stress of the surrounding rock to the compressive strength of the surrounding rock: based on the evaluation results, the tunnel layout strategy with the lowest impact hazard index and the best safety and efficiency can be selected as the target layout strategy to ensure the safety, efficiency and economy of mining activities while minimizing the impact on the environment.

[0061] Optionally, the danger level threshold is a standard value set for the impact hazard index, which can be used to distinguish the impact hazard level of the tunnel surrounding rock. The impact hazard index is the ratio of the external stress of the surrounding rock to the compressive strength of the surrounding rock. If the impact hazard index exceeds the danger level threshold, it means that the impact hazard of the tunnel surrounding rock is high, and additional safety measures can be taken, or the layout strategy of the tunnel can be reconsidered to reduce the impact risk. The setting of the danger level threshold can be based on engineering safety requirements and practical experience. It is only for example and is not specifically limited here.

[0062] In the above steps S102 to S108 of the present application, by acquiring mechanical characteristic information and geological characteristic information of at least one coal seam, a three-dimensional numerical model of at least one coal seam is constructed based on the mechanical characteristic information and geological characteristic information, a target coal seam is determined from at least one coal seam based on the three-dimensional numerical model, and multiple layout strategies are determined for the target coal seam, and multiple layout strategies are evaluated respectively to obtain corresponding evaluation results, and based on the evaluation results, a target layout strategy is determined from multiple layout strategies. In this embodiment, by constructing a three-dimensional numerical model of the coal seam, simulating the mechanical behavior under different lane layout strategies in the horizontal direction, evaluating the safety and efficiency of each layout strategy, and thus selecting an excellent lane layout strategy, not only can the empirical errors in the relevant methods be avoided, and the scientificity and rationality of the lane layout be improved, but also the interaction and influence between multiple factors can be comprehensively considered to achieve the accuracy of the comprehensive optimization of the lane, thereby achieving the technical effect of improving the accuracy of the lane layout strategy determination, and solving the technical problem of low accuracy of the lane layout strategy determination.

[0063] The above method of this embodiment is further introduced below.

[0064] As an optional implementation method, the geological characteristic information includes at least the thickness and inclination of the coal seam, and the mechanical characteristic information includes at least the bulk modulus, shear modulus, tensile strength, cohesion, internal friction angle and bulk density of the coal seam.

[0065] In this embodiment, the geological characteristic information may include at least the thickness and inclination of the coal seam, and the mechanical characteristic information may include at least the bulk modulus, shear modulus, tensile strength, cohesion, internal friction angle and bulk density of the coal seam.

[0066] Optionally, the coal seam thickness is the thickness of the coal seam underground, usually measured in meters. The coal seam inclination is the inclination angle of the coal seam relative to the horizontal plane, usually expressed in degrees. The coal seam bulk modulus is the resistance of the coal seam to volume change under force, usually expressed in Pascals (Pa). The coal seam shear modulus is the resistance of the coal seam to deformation under shear force, usually expressed in Pascals (Pa). The tensile strength of the coal seam is the resistance of the coal seam under tension, usually expressed in Pascals (Pa). The coal seam cohesion is the adsorption force between molecules inside the coal seam, usually expressed in Pascals (Pa). The coal seam internal friction angle is the frictional resistance between coal seam particles when the coal seam is subjected to shear force, usually expressed in degrees. The coal seam bulk density is the weight of the coal seam per unit volume, expressed in kilograms per cubic meter.

[0067] As an optional implementation method, step S104, based on mechanical characteristic information and geological characteristic information, constructs a three-dimensional numerical model of at least one coal seam, including: constructing an initial three-dimensional numerical model based on thickness, inclination, bulk modulus, shear modulus, tensile strength, cohesion, internal friction angle and bulk density; adjusting the horizontal displacement of both sides of the initial three-dimensional numerical model to simulate the displacement caused by different forces, and adjusting the bottom edge of the initial three-dimensional numerical model to limit the horizontal and numerical displacements; in response to the adjustment of the initial three-dimensional numerical model being completed and the model being in a balanced state, determining the three-dimensional numerical model.

[0068] In this embodiment, in the process of constructing a three-dimensional numerical model of at least one coal seam based on mechanical characteristic information and geological characteristic information, an initial three-dimensional numerical model can be constructed based on thickness, inclination, bulk modulus, shear modulus, tensile strength, cohesion, internal friction angle and bulk density; the displacement of both sides of the initial three-dimensional numerical model in the horizontal direction can be adjusted to simulate the displacement caused by different forces, and the bottom edge of the initial three-dimensional numerical model can be adjusted to limit the displacement in the horizontal and numerical directions; the three-dimensional numerical model can be determined after the adjustment of the initial three-dimensional numerical model is completed and the model is in a balanced state.

[0069] Alternatively, an initial three-dimensional numerical model reflecting the mechanical properties of the coal seam and its surrounding rock formations can be constructed using geotechnical numerical simulation software (such as Fast Lagrangian Analysis of Continua in 3 Dimensions, FLAC3D). FLAC3D is a three-dimensional numerical simulation software that can simulate the deformation and failure behavior of rock and soil bodies under complex geological conditions, including but not limited to stress analysis, plastic flow, fracture mechanics, seepage analysis, etc.

[0070] Optionally, in the initial three-dimensional numerical model, horizontal displacement constraints on both sides of the initial three-dimensional numerical model can be set to simulate lateral constraints. By adjusting the above constraints, the horizontal displacement of the coal seam and surrounding rock under the action of different forces (such as mining force, ground stress release) can be simulated, and the horizontal displacement can be adjusted to observe the influence of the tunnel position on the stability of the surrounding rock. The bottom displacement constraint of the initial three-dimensional numerical model can limit the displacement in the horizontal and vertical directions to simulate the consolidation boundary conditions and ensure the reliability of the simulation results of the initial three-dimensional numerical model. After adjusting the displacement constraints and other parameters of the initial three-dimensional numerical model, the initial three-dimensional numerical model can be run until a state of equilibrium is reached. The equilibrium state is when the forces and movements inside the initial three-dimensional numerical model are stable, and there are no significant stress or displacement changes, which can reflect the mechanical behavior of the tunnel layout under real geological conditions.

[0071] As an optional implementation method, step S106, based on the three-dimensional numerical model, determines the target coal seam from at least one coal seam, including: based on the three-dimensional numerical model, simulating the mechanical behavior of the coal seam in the numerical direction, and evaluating the force, energy and displacement in the numerical direction during the simulation process to obtain a first evaluation result; based on the first evaluation result, determines the target coal seam from at least one coal seam.

[0072] In this embodiment, in the process of determining a target coal seam from at least one coal seam based on a three-dimensional numerical model, the mechanical behavior of the coal seam in the numerical direction can be simulated based on the three-dimensional numerical model, and the force, energy and displacement in the numerical direction during the simulation process can be evaluated to obtain a first evaluation result; based on the first evaluation result, the target coal seam can be determined from at least one coal seam.

[0073] Optionally, the numerical direction can be the coordinate axis direction in the three-dimensional numerical model, that is, the mechanical response of the simulated tunnel in the excavation direction, vertical direction and horizontal direction. The first evaluation result can reflect the mechanical response of the coal seam during the mining process, which is a key indicator for evaluating the stability, impact hazard and mining efficiency of the coal seam. The determination of the target coal seam tends to be a coal seam with uniform stress distribution, gentle energy release and displacement controlled within a safe range to ensure the safety of the tunnel layout.

[0074] As an optional implementation method, the force in the vertical direction includes vertical stress, the force in the horizontal direction includes horizontal stress, and the evaluation results include vertical stress evaluation results, horizontal stress evaluation results, surrounding rock energy evaluation results and surrounding rock lateral deformation evaluation results, wherein the vertical stress evaluation results are used to represent the distribution of vertical stress of different surrounding rocks, the horizontal stress evaluation results are used to represent the distribution of horizontal stress of different surrounding rocks, the surrounding rock energy evaluation results are used to represent the energy distribution of different surrounding rocks, and the surrounding rock lateral deformation evaluation results are used to represent the lateral deformation of different surrounding rocks.

[0075] In this embodiment, the force in the vertical direction may include vertical stress, the force in the horizontal direction may include horizontal stress, and the evaluation result may include vertical stress evaluation result, horizontal stress evaluation result, surrounding rock energy evaluation result, and surrounding rock lateral deformation evaluation result. Among them, the vertical stress evaluation result can be used to represent the distribution of vertical stress of different surrounding rocks, for example, the vertical stress distribution of tunnel surrounding rocks under different layout strategies; the horizontal stress evaluation result can be used to represent the distribution of horizontal stress of different surrounding rocks, for example, the horizontal stress distribution of tunnel surrounding rocks under different layout strategies; the surrounding rock energy evaluation result can be used to represent the energy distribution of different surrounding rocks, for example, the energy distribution of tunnel surrounding rocks under different layout strategies; the surrounding rock lateral deformation evaluation result can be used to represent the lateral deformation of different surrounding rocks, for example, the lateral deformation of tunnel surrounding rocks under different layout strategies.

[0076] As an optional implementation method, step S108, based on the evaluation results, determines a target layout strategy from multiple layout strategies, including: determining the impact hazard index of the layout strategy based on the vertical stress evaluation results, the horizontal stress evaluation results, the surrounding rock energy evaluation results and the surrounding rock lateral deformation evaluation results, wherein the impact hazard index is used to indicate the degree of impact hazard; based on the impact hazard index, determining the target layout strategy from multiple layout strategies.

[0077] In this embodiment, in the process of determining a target layout strategy from multiple layout strategies based on the evaluation results, the impact hazard index of the layout strategy can be determined based on the vertical stress evaluation results, the horizontal stress evaluation results, the surrounding rock energy evaluation results and the surrounding rock lateral deformation evaluation results, wherein the impact hazard index is used to indicate the degree of hazard of the impact; based on the impact hazard index, the target layout strategy can be determined from multiple layout strategies.

[0078] Optionally, the impact risk index I n It can be calculated by the following formula:

[0079]

[0080] Among them, σ p Can be used to express the external stress of surrounding rock, the unit is MPa; σ c It can be used to express the compressive strength of coal samples in MPa.

[0081] Alternatively, the engineering criterion for impact hazard can be summarized as “the stress causing impact should be at least greater than the uniaxial compressive strength of coal rock and the coal rock has impact tendency”. Usually, the ratio of the external stress of surrounding rock to the compressive strength of surrounding rock is recorded as I n , I n When the impact risks are between 0 and 1.0, 1 and 1.5, 1.5 and 3.0, and >3.0, the corresponding impact risks are divided into four impact risk indexes: none, weak, medium, and strong impact.

[0082] As an optional embodiment, based on the impact risk index, a target placement strategy is determined from multiple placement strategies, including: determining the placement strategy corresponding to the minimum value of the multiple impact risk indexes as the target placement strategy.

[0083] In this embodiment, in the process of determining the target placement strategy from multiple placement strategies based on the impact risk index, the placement strategy corresponding to the minimum value of the multiple impact risk indexes may be determined as the target placement strategy.

[0084] Optionally, the calculated multiple I n Compare the values ​​and find the minimum value. n The value is directly related to the impact risk of the tunnel surrounding rock. n The value means that the roadway has the highest stability and the lowest impact hazard risk under this strategy, and it can be determined as the target layout strategy.

[0085] The technical solution of the embodiment of the present invention is illustrated below in conjunction with preferred implementation modes.

[0086] At present, in the process of coal mining, the layout of tunnels is crucial for the effective mining of coal resources and mine safety. Due to the special occurrence conditions and geological structures of steeply inclined and thick coal seams, the layout of tunnels faces more challenges. The relevant tunnel layout methods are often based on the experience of engineers and the actual situation on site, lacking systematic theoretical guidance and scientific optimization methods. Due to the characteristics of steeply inclined and thick coal seams such as large inclination angles and poor rock stability, tunnels are prone to roof collapse, floor bulging, and tunnel deformation during excavation and mining. The above problems not only affect the stability and safety of the tunnels, but may also lead to reduced production efficiency and increased costs.

[0087] The present invention proposes a method for optimizing the horizontal position of steeply inclined and extremely thick coal seam tunnels based on numerical simulation. The numerical model of steeply inclined and extremely thick coal seam tunnels is established by FLAC3D software, the mechanical behavior of different tunnel layout schemes in the horizontal direction is simulated, and the safety and efficiency of each scheme are evaluated, so as to select an excellent tunnel layout scheme. This method can not only avoid empirical errors in related methods and improve the rationality of tunnel layout, but also comprehensively consider the interaction between multiple factors and realize the comprehensive optimization of tunnels, thereby achieving the technical effect of improving the accuracy of tunnel layout strategy determination and solving the technical problem of low accuracy of tunnel layout strategy determination.

[0088] The embodiments of the present invention are further described below.

[0089] In an embodiment of the present invention, Figure 2 is a flow chart of a method for optimizing the horizontal position of a steeply inclined and thick coal seam tunnel based on numerical simulation according to an embodiment of the present invention. Figure 2 As shown, the method comprises the following steps:

[0090] Step S202, collecting geological data of steeply inclined and extremely thick coal seams. Specifically, geological data of steeply inclined and extremely thick coal seams may be collected, including parameters such as thickness, inclination, and rock mechanical properties of the coal seams as geological data.

[0091] Table 1 Rock formation mechanical parameters information

[0092]

[0093] Table 1 is a rock formation mechanical parameter information table according to an embodiment of the present invention. As shown in Table 1, the steeply inclined coal seam has a dip angle of 87, and the main mining groups are B1+2 and B3+6 coal seams, with average thicknesses of 37.0 m and 48.0 m respectively. A numerical calculation model is constructed based on the geological conditions of the target mine coal seam, mining design and physical and mechanical parameters of the coal and rock mass, and the displacement, stress and energy field evolution laws of the coal and rock mass at different burial depths below the working face are calculated and analyzed.

[0094] Figure 3 is a schematic diagram of a numerical model of B1+2 and B3+6 coal seams according to an embodiment of the present invention, such as Figure 3 As shown in the figure, in the calculation model, horizontal displacement constraints are imposed on both sides of the numerical model to limit its displacement in the horizontal direction, but not in the vertical direction; the bottom side limits the displacement in the horizontal and vertical directions; when the numerical model operation reaches a balanced state, the FLAC3D empty unit is used to simulate the excavation of the steeply inclined coal seam; by arranging the survey line and then analyzing the displacement field, stress field and energy field change characteristics of the top and bottom plates of the B3+6 coal seam, the bottom of the +400 level B3+6 coal seam and the clamping rock pillar, the overall stability characteristics of the numerical model are analyzed.

[0095] Step S204, establish a FLAC3D numerical model to simulate the mechanical behavior of the coal seam. Specifically, a FLAC3D numerical model can be established based on geological data to evaluate the stress, energy, and displacement in the vertical direction and select the most stable layer.

[0096] FIG4(a) is a schematic diagram of a vertical stress distribution cloud map according to an embodiment of the present invention. As shown in FIG4(a), by excavating the goaf, a cloud map of vertical stress distribution of the surrounding rock after the mining of level B3+6 of the mine +400 is completed can be obtained. FIG4(b) is a schematic diagram of a horizontal stress distribution cloud map according to an embodiment of the present invention. As shown in FIG4(b), by excavating the goaf, a cloud map of horizontal stress distribution of the surrounding rock after the mining of level B3+6 of the mine +400 is completed can be obtained. The left side of the figure represents the volume average value on the grid point.

[0097] Figure 5(a) is a schematic diagram of a vertical stress curve according to an embodiment of the present invention. As shown in Figure 5(a), the goaf is excavated to obtain a vertical stress curve of the surrounding rock after the mining of the +400 level B3+6 of the mine is completed. Figure 5(b) is a schematic diagram of a horizontal stress curve according to an embodiment of the present invention. As shown in Figure 5(b), the goaf is excavated to obtain a horizontal stress curve of the surrounding rock after the mining of the +400 level B3+6 of the mine is completed.

[0098] Figure 6 Schematic diagram of elastic energy density distribution characteristics of surrounding rock before tunneling in a B3+6 coal seam according to an embodiment of the present invention. Figure 6 As shown in the figure, the energy of the surrounding rock on the side of the B6 tunnel at the elevation of 25m (+400 level) at the B3+6 working face forms an energy concentration area. The left side of the figure shows the volume average of the regional contour of the additional variables.

[0099] Figure 7 Schematic diagram of elastic energy curve distribution characteristics of surrounding rock of B3+6 coal seam according to an embodiment of the present invention. Figure 7 As shown in the figure, before the +400 level coal seam, the energy on both sides of the roof and floor of the goaf is effectively released, so its value is relatively low. Between the +400 and +375 level coal seams, the shallow energy of the surrounding rock on both sides of the roof and floor is released, and its value is at a relatively low level. Since an energy concentration area is formed below the +375 to +350 level coal seams, its energy rises significantly. Below the +350 level, the energy of the survey line area on both sides of the roof and floor gradually tends to a stable state in the deep surrounding rock. Therefore, when the next layer is arranged near the elevation of 50m, the surrounding rock of the tunnel is less affected by energy.

[0100] Figure 8 Schematic diagram of the maximum displacement distribution characteristics of the surrounding rock before tunneling in a B3+6 coal seam according to an embodiment of the present invention. Figure 8 As shown in the figure, the displacement in the shallow area below the working face is large, and the surrounding rock becomes more stable as the depth increases, indicating that when optimizing the layout of the tunnel position, arranging the tunnel in the deep area is beneficial to the stability of the tunnel surrounding rock. The left side of the figure shows the displacement distribution of each node or area in the model.

[0101] Fig. 9 Schematic diagram of the maximum displacement curve distribution characteristics of the surrounding rock below the B3+6 coal seam according to an embodiment of the present invention. Fig. 9 As shown in the figure, due to the "leverage effect" of the rock pillars between B1+2 and B3+6, the maximum displacement of the B3 roadway side of the B3+6 coal seam far exceeds the maximum displacement of the B6 roadway side. The displacement of the B6 roadway side is smaller and more stable than that of the B3 roadway side.

[0102] Step S206, determine the tunnel layout scheme. Specifically, different tunnel layout schemes can be designed in the horizontal direction in the numerical model, and the horizontal stress and vertical stress distribution of the coal seam under each scheme can be simulated, and finally an excellent tunnel layout scheme can be selected.

[0103] Fig.10 is a schematic diagram of a lane arrangement scheme at different positions in the horizontal direction according to an embodiment of the present invention, such as Fig.10 As shown in the figure, when the roadway is arranged at the +375 level of the B3+6 coal seam, the roadway surrounding rock is less affected by stress, energy and displacement in the vertical direction. In order to study the roadway surrounding rock stress and other conditions under different horizontal arrangements of the B3+6 coal seam at the +375 level of the target coal mine, the B3 roadway and the B6 roadway are designed to move from the coal body to the rock body, and the width of the rock body in the roadway increases successively. A total of five roadway layout schemes are designed, namely, coal roadway (Scheme 1) (a), 4.2m coal left at the side of the roadway (Scheme 2) (b), half coal-rock roadway (Scheme 3) (c), 1.4m coal left at the side of the roadway (Scheme 4) (d), and rock roadway (Scheme 5) (e).

[0104] Fig.11 Schematic diagram of horizontal stress distribution of tunnel surrounding rock under different schemes according to an embodiment of the present invention, such as Fig.11 As shown in the figure, the horizontal stress distribution results of the tunnel surrounding rock through five layout schemes (a), (b), (c), (d), and (e). The left side of the figure shows the average stress of the center point or area in the volume.

[0105] Fig.12 is a schematic diagram of a horizontal stress curve of the upper and lower surrounding rocks of a tunnel according to an embodiment of the present invention, such as Fig.12As shown in the figure, (a) is the horizontal stress curve of the surrounding rock of B3 tunnel, and (b) is the horizontal stress curve of the surrounding rock of B6 tunnel. The simulation results of the horizontal stress of the tunnel surrounding rock of the five layout schemes show that from the horizontal distribution of the surrounding rock of the B3+6 coal seam tunnel, the horizontal stress of the coal body within 1-3m from the tunnel boundary is at a relatively low value. This is because the tunnel excavation provides pressure release space for the coal body, and the horizontal stress concentration degree above and below the tunnel is greater than that on both sides of the tunnel. Stress concentration areas appear in the surrounding rocks above and below the B3 and B6 tunnels, and the stress concentration degree below the tunnel is much greater than that above the tunnel. As the tunnel gradually moves from the coal seam to the rock layer, that is, through (a)(b)(c)(d)(e) (advancing from scheme one to scheme five), the stress concentration degree of the tunnel surrounding rock increases significantly, and the horizontal stress peak gradually increases. When the B3 and B6 tunnels are arranged in the full rock tunnel, the horizontal stress values ​​of the roof and floor are greater.

[0106] Fig.13 Schematic diagram of vertical stress distribution of tunnel surrounding rock under different schemes according to an embodiment of the present invention, such as Fig.13 As shown in Figure 1, the vertical stress simulation results of the tunnel surrounding rock through five layout schemes (a), (b), (c), (d), and (e). The left side of the figure shows the volume average value at the grid point.

[0107] Fig.14 is a schematic diagram of a vertical stress curve of surrounding rock along the X direction according to an embodiment of the present invention, such as Fig.14 As shown in the figure, from the perspective of the surrounding rock stress distribution of the B3+6 coal seam roadway, stress concentration areas appear on the rock wall side of the B3 and B6 roadways. As the roadway gradually moves from the coal seam to the rock layer, the vertical stress concentration area on the rock wall side of the B3 and B6 roadways gradually increases. When the B3 and B6 roadways are arranged in the rock layer, the vertical stress concentration area on the rock wall side is larger, and the vertical stress values ​​on the coal wall side and the rock wall side differ greatly.

[0108] Fig.15 Schematic diagram of tunnel surrounding rock energy distribution under different schemes according to an embodiment of the present invention, such as Fig.15 As shown in the figure, the simulation results of tunnel surrounding rock energy through five layout schemes (a), (b), (c), (d), and (e). High energy areas appear in the rock walls of B3 and B6 tunnels. The peak value of the high energy area at the rock wall of B6 tunnel is larger than the peak value of the energy at the rock wall of B3 tunnel and the range is also wider. From the perspective of the surrounding rock energy distribution of B3+6 coal seam tunnels, slender high energy bands appear on the bottom plates of B3 and B6 tunnels. As the tunnels gradually move from the coal seam to the rock layer, the range of the energy unloading zone of the surrounding rock of B3 tunnel gradually decreases, the energy on the rock wall side is more concentrated, and the concentrated area becomes larger. When B3 and B6 tunnels are arranged in the rock layer, the high energy concentrated area on the bottom plate on the rock wall side is larger. The left side of the figure shows the volume average of the regional contours of the additional variables.

[0109] Fig.16Schematic diagram of lateral deformation of tunnel surrounding rock under different schemes according to an embodiment of the present invention, such as Fig.16 As shown in the figure, the simulation results of horizontal deformation of tunnel surrounding rock through five layout schemes (a), (b), (c), (d), and (e). The left side of the figure shows the displacement contour along the X direction.

[0110] Fig.17 is a schematic diagram of a horizontal displacement curve of surrounding rock in a tunnel according to an embodiment of the present invention. Fig.17 As shown in the figure, the simulation results of horizontal deformation of tunnel surrounding rock through five layout schemes (a), (b), (c), (d), and (e). Under the special geological structure and horizontal stress, the surrounding rock on both sides of the tunnel deforms and moves toward the goaf side. The analysis of horizontal deformation of tunnel surrounding rock shows that the bulging of rock side of B3 tunnel is greater than that of coal side, and the bulging of coal side of B6 tunnel is greater than that of rock side. As the tunnel moves from the coal seam to the rock layer, the horizontal deformation of the tunnel surrounding rock decreases, mainly between -0.003 and 0.003m. When the tunnel is arranged in the rock layer, the deformation of the tunnel surrounding rock is small and the stability is good.

[0111] Step S208, calculating the impact hazard index of the tunnel surrounding rock under different schemes. Specifically, the safety and efficiency of each scheme can be evaluated by calculating the impact hazard index and combining the simulation results under each scheme.

[0112] Alternatively, the engineering criterion for impact hazard can be summarized as “the stress causing impact should be at least greater than the uniaxial compressive strength of coal rock and the coal rock has an impact tendency”. The ratio of the external stress of the surrounding rock to the compressive strength of the surrounding rock is usually recorded as I n , the stress ratio I n When the impact risk is 0~1.0, 1~1.5, 1.5~3.0, and >3.0, the corresponding impact risk is divided into four types: no, weak, medium, and strong impact. n It is called the impact risk index, which can be calculated by the following formula:

[0113]

[0114] Among them, σ p Can be used to express the external stress of surrounding rock, the unit is MPa; σ c It can be used to express the compressive strength of coal samples in MPa.

[0115] Optionally, by calculating the horizontal stress impact rock pressure hazard index I above and below the roadway n The impact danger degree of the tunnel is judged by the value and the vertical stress impact ground pressure index (stress / strength value) of the rock and coal wall, and the tunnel surrounding rock stress is divided by the uniaxial compressive strength of the coal.

[0116] Alternatively, when the +375 level coal seam moves from the coal roadway to the rock roadway, the rock burst hazard index In value of the roof and floor of the B3 and B6 roadways decreases, and the maximum In value of the roof and floor in the coal roadway is 1.536, 1.744, 1.529, and 1.721, respectively, and the In value is the smallest when the roadway moves into the rock layer as a whole. The rock burst hazard index of both sides of the B3 and B6 roadways when they move into the rock layer as a whole does not exceed 1, which means there is no rock burst hazard. Therefore, the anti-rock burst effect is better when the roadway is arranged in the rock roadway.

[0117] Fig.18 is a schematic diagram of a rock burst hazard index of surrounding rock of B3 tunnel according to an embodiment of the present invention, such as Fig.18 As shown, (a) can represent the In value above / below the B3 roadway; (b) can represent the In value of the coal wall and the In value of the rock wall of the B3 roadway.

[0118] Fig.19 is a schematic diagram of a rock burst hazard index of the surrounding rock of B6 tunnel according to an embodiment of the present invention, such as Fig.19 As shown, (a) can represent the In value above / below the B6 roadway; (b) can represent the In value of the coal wall and the In value of the rock wall of the B6 roadway.

[0119] Step S210, select a suitable lane layout scheme. Specifically, a suitable lane layout scheme can be selected. According to an embodiment of the present invention, a device for determining a lane layout strategy is provided. It should be noted that the device for determining a lane layout strategy can be used to execute the method for determining a lane layout strategy in the above embodiment.

[0120] Fig. 20 FIG. 1 is a schematic diagram of a device for determining a lane layout strategy according to an embodiment of the present invention. Fig. 20 As shown, the device 2000 for determining the layout strategy of the lane may include: an acquisition unit 2002 , a construction unit 2004 , a first determination unit 2006 and a second determination unit 2008 .

[0121] The acquisition unit 2002 is used to acquire mechanical characteristic information and geological characteristic information of at least one coal seam, wherein the mechanical characteristic information is used to indicate the stability of the coal seam under different forces, and the geological characteristic information is used to indicate the stability of the structure of the coal seam. The construction unit 2004 is used to construct a three-dimensional numerical model of at least one coal seam based on the mechanical characteristic information and the geological characteristic information. The first determination unit 2006 is used to determine the target coal seam from at least one coal seam based on the three-dimensional numerical model, and determine multiple layout strategies for the target coal seam. The second determination unit 2008 is used to evaluate the multiple layout strategies respectively, obtain corresponding evaluation results, and determine the target layout strategy from the multiple layout strategies based on the evaluation results.

[0122] In the embodiment of the present invention, the mechanical characteristic information and geological characteristic information of at least one coal seam are obtained by the acquisition unit 2002, wherein the mechanical characteristic information is used to indicate the stability of the coal seam under different forces, and the geological characteristic information is used to indicate the stability of the structure of the coal seam; the three-dimensional numerical model of at least one coal seam is constructed by the construction unit 2004 based on the mechanical characteristic information and the geological characteristic information, wherein the three-dimensional numerical model is used to simulate the displacement of at least one coal seam caused by different forces in the vertical direction; the target coal seam is determined from the at least one coal seam based on the three-dimensional numerical model by the first determination unit 2006, and a plurality of layout strategies are determined for the target coal seam, wherein the layout strategy is used to indicate the rules for arranging the tunnels in the corresponding horizontal direction on the target coal seam; the plurality of layout strategies are evaluated by the second determination unit 2008 respectively to obtain corresponding evaluation results, and the target layout strategy is determined from the plurality of layout strategies based on the evaluation results, wherein the evaluation results are used to indicate the danger level of the surrounding rock of the tunnel under the impact of the force, and the danger level of the target layout strategy is lower than the danger level threshold, thereby achieving the technical effect of improving the accuracy of the layout strategy determination of the tunnel, and solving the technical problem of low accuracy of the layout strategy determination of the tunnel.

[0123] According to an embodiment of the present invention, there is further provided an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor can run the computer program to execute a method for determining a lane layout strategy.

[0124] According to an embodiment of the present invention, a computer-readable storage medium is further provided. The storage medium includes a stored program, wherein the program executes the method for determining the layout strategy of the lanes in the above embodiment.

[0125] According to an embodiment of the present invention, a processor is further provided, the processor being used to run a program, wherein when the program is run, the method for determining the layout strategy of the lanes in the above embodiment is executed.

[0126] The embodiment of the present application further provides a computer program product. Optionally, in the present embodiment, the computer program product may include a computer program, and when the computer program is executed by a processor, the method for determining the lane layout strategy of the embodiment of the present application is implemented.

[0127] Each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0128] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (RandomAccess Memory, referred to as RAM), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0129] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for determining a lane layout strategy, characterized in that: include: Acquire mechanical characteristic information and geological characteristic information of at least one coal seam, wherein the mechanical characteristic information is used to indicate the stability of the coal seam under the action of different forces, and the geological characteristic information is used to indicate the stability of the structure of the coal seam; Based on the mechanical characteristic information and the geological characteristic information, construct a three-dimensional numerical model of at least one of the coal seams, wherein the three-dimensional numerical model is used to simulate the displacement of at least one of the coal seams caused by the different forces in the vertical direction; Based on the three-dimensional numerical model, a target coal seam is determined from at least one of the coal seams, and a plurality of layout strategies are determined for the target coal seam, wherein the layout strategies are used to represent rules for arranging tunnels in a corresponding horizontal direction on the target coal seam; The plurality of layout strategies are evaluated respectively to obtain corresponding evaluation results, and based on the evaluation results, a target layout strategy is determined from the plurality of layout strategies, wherein the evaluation results are used to indicate the danger level of the surrounding rock of the tunnel when subjected to the impact of the force, and the danger level of the target layout strategy is lower than a danger level threshold.

2. The method according to claim 1, characterized in that The geological characteristic information includes at least the thickness and inclination of the coal seam, and the mechanical characteristic information includes at least the bulk modulus, shear modulus, tensile strength, cohesion, internal friction angle and bulk density of the coal seam.

3. The method according to claim 2, characterized in that Based on the mechanical characteristic information and the geological characteristic information, constructing at least one three-dimensional numerical model of the coal seam, including: constructing an initial three-dimensional numerical model based on the thickness, the inclination angle, the bulk modulus, the shear modulus, the tensile strength, the cohesion, the internal friction angle and the bulk density; Adjusting the displacements of both sides of the initial three-dimensional numerical model in the horizontal direction to simulate the displacements caused by different forces, and adjusting the bottom edge of the initial three-dimensional numerical model to limit the displacements in the horizontal direction and the numerical direction; In response to the adjustment of the initial three-dimensional numerical model being completed and the model being in a balanced state, the three-dimensional numerical model is determined.

4. The method according to claim 3, characterized in that Determining a target coal seam from at least one of the coal seams based on the three-dimensional numerical model includes: Based on the three-dimensional numerical model, the mechanical behavior of the coal seam in the numerical direction is simulated, and the force, energy and displacement in the numerical direction during the simulation are evaluated to obtain a first evaluation result; Based on the first evaluation result, the target coal seam is determined from at least one of the coal seams.

5. The method according to claim 1, characterized in that The force in the vertical direction includes vertical stress, the force in the horizontal direction includes horizontal stress, and the evaluation results include vertical stress evaluation results, horizontal stress evaluation results, surrounding rock energy evaluation results and surrounding rock lateral deformation evaluation results, wherein the vertical stress evaluation results are used to represent the distribution of the vertical stress of different surrounding rocks, the horizontal stress evaluation results are used to represent the distribution of the horizontal stress of different surrounding rocks, the surrounding rock energy evaluation results are used to represent the energy distribution of different surrounding rocks, and the surrounding rock lateral deformation evaluation results are used to represent the lateral deformation of different surrounding rocks.

6. The method according to claim 5, characterized in that Based on the evaluation result, a target placement strategy is determined from the plurality of placement strategies, including: Determine the impact risk index of the layout strategy based on the vertical stress assessment result, the horizontal stress assessment result, the surrounding rock energy assessment result and the surrounding rock lateral deformation assessment result, wherein the impact risk index is used to indicate the degree of risk of the impact; Based on the impact risk index, the target placement strategy is determined from the plurality of placement strategies.

7. The method according to claim 6, characterized in that Determining the target layout strategy from a plurality of the layout strategies based on the impact risk index includes: The layout strategy corresponding to the minimum value among the plurality of impact risk indexes is determined as the target layout strategy.

8. A device for determining a lane layout strategy, characterized in that: include: An acquisition unit, used to acquire mechanical characteristic information and geological characteristic information of at least one coal seam, wherein the mechanical characteristic information is used to indicate the stability of the coal seam under the action of different forces, and the geological characteristic information is used to indicate the stability of the structure of the coal seam; A construction unit, configured to construct a three-dimensional numerical model of at least one of the coal seams based on the mechanical characteristic information and the geological characteristic information, wherein the three-dimensional numerical model is configured to simulate the displacement of at least one of the coal seams caused by different forces in the vertical direction; A first determining unit is used to determine a target coal seam from at least one of the coal seams based on the three-dimensional numerical model, and determine a plurality of layout strategies for the target coal seam, wherein the layout strategy is used to represent a rule for arranging tunnels in a corresponding horizontal direction on the target coal seam; The second determination unit is used to evaluate the multiple layout strategies respectively, obtain corresponding evaluation results, and determine a target layout strategy from the multiple layout strategies based on the evaluation results, wherein the evaluation results are used to indicate the danger level of the surrounding rock of the tunnel when it is impacted by the force, and the danger level of the target layout strategy is lower than a danger level threshold.

9. An electronic device, comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to execute the method for determining the lane layout strategy according to any one of claims 1 to 7.

10. A processor, characterized in that: The processor is used to run a program, wherein the program, when run by the processor, executes the method for determining the lane layout strategy according to any one of claims 1 to 7.

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