Mine process roadway evaluation method, electronic equipment and storage medium

Abstract

The invention discloses a process roadway evaluation method for a mine, electronic equipment and a storage medium. The method comprises the following steps: acquiring a mine type of a mine and roadway parameters of a process roadway; determining the power assisting state of the process roadway based on the mine type and the roadway parameters; on the basis of a preset pressure relief mode, pressure relief simulation is conducted on the process roadway and a preset roadway, the stress distribution influence state of the working face is obtained, the preset roadway is a roadway excavated in the mine, and the stress distribution influence state is used for representing the influence of the excavation working face on stress distribution of the working face; the mine is evaluated on the basis of the assistance state and the stress distribution influence state, an evaluation result is obtained, and the evaluation result is used for representing whether a process roadway needs to be excavated in the mine or not. The technical problem that whether the process roadway is reserved or not is difficult to assess in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of mines, and in particular to a method for evaluating a process tunnel of a mine, an electronic device and a storage medium. Background Art

[0002] China has abundant coal resources, but the distribution of coal seams is complex, with more than one-third of coal reserves located under hard roof geological conditions. Coal mining in these areas faces the risk of rock burst disasters caused by factors such as good integrity, high strength and large fracture step of the hard roof, which poses a serious threat to the safe production of mines.

[0003] In response to this problem, many mines have adopted pressure relief and anti-bumping measures. In multi-coal seam mining mines, traditional pressure relief measures are not effective in the upper and lower drifts, and additional process tunnels need to be excavated to implement pressure relief measures to achieve better anti-bumping effects. However, this approach will increase costs, slow down production progress, and complicate the production process. Relatively speaking, when mining new underlying coal seams, mining the upper protective layer can have a certain pressure relief effect on the underlying coal seams, but in certain circumstances, even without additional process tunnels, implementing pressure relief measures in the upper and lower drifts can also achieve the purpose of anti-bumping, which makes it difficult to determine whether to excavate process tunnels in related technologies.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a method for evaluating a process tunnel of a mine, an electronic device and a storage medium, so as to at least solve the technical problem in the related art that it is difficult to evaluate whether a process tunnel should be left or not.

[0006] According to one aspect of an embodiment of the present invention, a method for evaluating a process tunnel of a mine is provided, comprising: obtaining the mine type and tunnel parameters of the process tunnel of the mine, wherein the process tunnel is used to achieve the purpose of pressure relief and anti-bumping in the mine, and the mine is a mine to be evaluated whether it is necessary to excavate a process tunnel; determining the power-assisting state of the process tunnel based on the mine type and tunnel parameters, wherein the power-assisting state is used to indicate whether the process tunnel reduces the stress level of the corresponding working face of the mine, and the working face is used to indicate the area in the mine that is being mined or to be mined; performing a pressure relief simulation on the process tunnel and the preset tunnel based on a preset pressure relief method to obtain a stress distribution influence state of the working face, wherein the preset tunnel is a tunnel that has been excavated in the mine, and the stress distribution influence state is used to indicate the influence of the excavation working face on the stress distribution of the working face; evaluating the mine based on the power-assisting state and the stress distribution influence state to obtain an evaluation result, wherein the evaluation result is used to indicate whether it is necessary to excavate a process tunnel in the mine.

[0007] Furthermore, the mine is evaluated based on the power assist state and the stress distribution influence state to obtain an evaluation result, including: determining the target stress distribution of the working face based on the power assist state and the stress distribution influence state; and evaluating the mine based on the preset stress distribution and the target stress distribution to obtain an evaluation result.

[0008] Furthermore, the mine is evaluated based on the preset stress distribution and the target stress distribution to obtain evaluation results, including: in response to the target stress distribution being less than the preset stress distribution, determining that the evaluation result is that there is no need to excavate a process tunnel in the mine; in response to the target stress distribution being greater than or equal to the preset stress distribution, determining that the evaluation result is that there is a need to excavate a process tunnel in the mine.

[0009] Furthermore, the method also includes: in response to a stress monitoring system being arranged in the mine, monitoring the working face based on the stress monitoring system to obtain a preset stress distribution; in response to no stress monitoring system being arranged in the mine, determining the preset stress distribution based on geological data of the area where the mine is located and the mine type.

[0010] Furthermore, the power assist state of the process tunnel is determined based on the mine type and tunnel parameters, including: in response to the mine type being a preset mine type, generating an excavation model of the mine based on the tunnel parameters, wherein the excavation model is used to simulate the excavation of the process tunnel in the mine; determining a first stress distribution and a second stress distribution corresponding to the working face based on the excavation model, wherein the first stress distribution is used to represent the stress distribution of the working face of the excavation model before the excavation of the process tunnel, and the second stress distribution is used to represent the stress distribution of the working face of the excavation model after the excavation of the process tunnel; the power assist state is determined based on the first stress distribution and the second stress distribution.

[0011] Furthermore, pressure relief simulation is performed on the process tunnel and the preset tunnel based on the preset pressure relief method to obtain the stress distribution influence state of the working face, including: pressure relief simulation is performed on the process tunnel in the excavation model based on the preset pressure relief method to obtain the third stress distribution of the working face; pressure relief simulation is performed on the preset tunnel in the excavation model based on the preset pressure relief method to obtain the fourth stress distribution of the working face; and the stress distribution influence state is determined based on the third stress distribution and the fourth stress distribution.

[0012] Furthermore, the method also includes: obtaining rock stratification data and drilling data of the area where the mine is located; performing stress analysis on the mine based on the rock stratification data and drilling data to obtain stability parameters of the top rock strata corresponding to the mine; in response to the stability parameter being greater than or equal to the preset stability parameter, determining that the mine type is a preset mine type; in response to the stability parameter being less than the preset stability parameter, determining that the mine type is a non-preset mine type.

[0013] According to another aspect of an embodiment of the present invention, a device for evaluating a process tunnel of a mine is also provided, comprising: an acquisition module, used to acquire the mine type and tunnel parameters of the process tunnel of the mine, wherein the process tunnel is used to achieve the purpose of pressure relief and anti-bumping in the mine, and the mine is a mine to be evaluated whether it is necessary to excavate a process tunnel; a determination module, used to determine the power-assisting state of the process tunnel based on the mine type and tunnel parameters, wherein the power-assisting state is used to indicate whether the process tunnel reduces the stress level of the corresponding working face of the mine, and the working face is used to indicate the area in the mine that is being mined or to be mined; a simulation module, used to perform pressure relief simulation on the process tunnel and the preset tunnel based on a preset pressure relief method, and obtain the stress distribution influence state of the working face, wherein the preset tunnel is a tunnel that has been excavated in the mine, and the stress distribution influence state is used to indicate the influence of the excavation working face on the stress distribution of the working face; an evaluation module, used to evaluate the mine based on the power-assisting state and the stress distribution influence state, and obtain an evaluation result, wherein the evaluation result is used to indicate whether it is necessary to excavate a process tunnel in the mine.

[0014] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0015] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0016] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0017] In an embodiment of the present invention, the mine type and the tunnel parameters of the process tunnel of the mine are first obtained; then the power-assistance state of the process tunnel is determined based on the mine type and the tunnel parameters; then the process tunnel and the preset tunnel are subjected to pressure relief simulation based on a preset pressure relief method to obtain the stress distribution influence state of the working face; finally, the mine is evaluated based on the power-assistance state and the stress distribution influence state to obtain an evaluation result. It is easy to notice that the power-assistance state indicates whether the process tunnel reduces the stress level of the corresponding working face of the mine, and the stress distribution influence state indicates the influence of the excavation working face on the stress distribution of the working face. The present application first determines the power-assistance state by the mine type and the tunnel parameters, and then obtains the stress distribution influence state under the simulation state by pressure relief simulation. Finally, it is determined whether it is necessary to excavate the process tunnel in the mine by combining the power-assistance state of the process tunnel and the stress distribution influence state obtained by excavation simulation, thereby obtaining an evaluation result on whether the process tunnel is left, thereby solving the technical problem in the related art that it is difficult to evaluate whether the process tunnel is left or not. 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 evaluating a process tunnel of a mine according to an embodiment of the present invention;

[0020] Figure 2 is a flow chart of an optional method for evaluating a process tunnel of a mine according to an embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of a process tunnel evaluation device for a mine according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] According to an embodiment of the present invention, an embodiment of a method for evaluating a process tunnel of a mine 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 may be executed in an order different from that shown here.

[0025] Figure 1 is a flow chart of a method for evaluating a process tunnel in a mine according to an embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0026] Step S102, obtaining the mine type and tunnel parameters of the process tunnel of the mine, wherein the process tunnel is used to achieve the purpose of pressure relief and anti-bumping of the mine, and the mine is a mine to be evaluated whether it is necessary to excavate the process tunnel.

[0027] The above-mentioned mine type may refer to the type of mine determined according to the coal seam storage conditions and geological structure. The mine type may include but is not limited to hard roof type rock burst mines, non-hard roof type rock burst mines, etc. The specific mine type needs to be determined according to the task requirements and is not limited here. The determination of the mine type can be used to subsequently determine the mining risks and anti-rock burst requirements for different types of mines.

[0028] The above-mentioned process tunnel may refer to the tunnel located between the upper and lower drifts of the working face. The setting of the process tunnel needs to be determined based on comprehensive factors such as the geological conditions of the mine, the location of the coal seam, and the mechanism of rock burst. No limitation is made here. The role of the process tunnel may include but is not limited to reducing the stress level of the mining area and improving the safe mining conditions of the mine through scientific pressure relief methods.

[0029] The above-mentioned tunnel parameters may refer to various indicators that need to be considered in the design of process tunnels. The tunnel parameters may include but are not limited to the width, height, length and depth of the tunnel. The specific tunnel parameters need to be determined according to the design requirements of the process tunnel and are not limited here. The role of tunnel parameters may include but are not limited to ensuring the effectiveness of pressure relief and anti-collision measures, controlling costs and improving productivity.

[0030] In an optional embodiment, it is first necessary to determine the type of mine, that is, to confirm whether the mine has hard roof geological characteristics and the risk of rock burst, which is a prerequisite for implementing pressure relief and anti-impact measures; at the same time, it is necessary to determine the tunnel parameters of the process tunnel. Determining the tunnel parameters is a key factor in ensuring the effectiveness and economy of the pressure relief measures. Reasonable parameter design can optimize the stress distribution of the process tunnel, reduce unnecessary excavation costs, and at the same time simplify the production process and improve coal mining efficiency.

[0031] Step S104, determining the power assist state of the process tunnel based on the mine type and tunnel parameters, wherein the power assist state is used to indicate whether the process tunnel reduces the stress level of the corresponding working face of the mine, and the working face is used to indicate the area in the mine that is being mined or to be mined.

[0032] The above-mentioned power-assisting state may refer to the contribution to reducing the stress level of the working face when implementing pressure relief and anti-impact measures. The power-assisting state may be used to determine whether to retain a process tunnel.

[0033] The above stress level may refer to the stress level borne by the surrounding rock and overlying rock formations of the working face during the mining process. The role of determining the stress level may include but is not limited to ensuring the construction safety during the mining process of the mine and preventing rock bursts in multi-coal seam mining.

[0034] In an optional embodiment, the power assist status of the evaluated process tunnel is determined by the mine type and tunnel coefficient. In this process, the stress distribution before and after the excavation of the process tunnel can be comprehensively evaluated through numerical simulation, field tests or historical data analysis, the effectiveness of pressure relief measures can be analyzed, and the balance between excavation costs and anti-impact benefits can be considered. The power assist status is obtained after comprehensive analysis. The obtained power assist status provides mine managers with a decision-making basis for whether to excavate the process tunnel, ensuring that mining activities can reduce the risk of rock burst while taking economic benefits into consideration, thereby achieving safe and efficient mining.

[0035] Step S106, based on the preset pressure relief method, a pressure relief simulation is performed on the process tunnel and the preset tunnel to obtain the stress distribution influence state of the working face, wherein the preset tunnel is a tunnel that has been excavated in the mine, and the stress distribution influence state is used to indicate the influence of the excavation working face on the stress distribution of the working face.

[0036] The above-mentioned preset pressure relief method may refer to the pressure relief method pre-selected during the mining design stage according to the mine geological conditions, coal seam occurrence characteristics and rock burst mechanism. The types of preset pressure relief methods may include but are not limited to blasting pressure relief, hydraulic fracturing, drilling pressure relief and goaf pressure relief. The specific preset pressure relief method needs to be determined according to the actual mining environment and pressure relief equipment, which is not limited here. The role of the preset pressure relief method may include but is not limited to reducing the stress level of the working face and preventing rock burst disasters.

[0037] The above-mentioned pressure relief simulation may refer to a predictive analysis performed before or in the early stage of mining using a mine geomechanical model and numerical simulation software. The numerical simulation software for pressure relief simulation may include but is not limited to Fast Lagrangian Analysis of Continua in 3 Dimensions (FLAC3D for short), Universal Distinct Element Code, etc. The specific numerical simulation software needs to be determined according to actual needs and is not limited here. The role of pressure relief simulation may include but is not limited to simulating the implementation effects of various pressure relief methods in process tunnels and preset tunnels, obtaining different stress distribution conditions, providing reference for practical applications, and reducing costs.

[0038] The above-mentioned stress distribution influence state may refer to the degree of change in the stress distribution of the working face after the pressure relief method is implemented in the process tunnel and the preset tunnel. The role of the stress distribution influence state may include but is not limited to evaluating the effectiveness of the pressure relief method, judging whether it is necessary to excavate the process tunnel to achieve better stress management, etc.

[0039] In an optional embodiment, the process tunnel and the preset tunnel are simulated by pre-set pressure relief methods such as blasting and hydraulic fracturing to obtain the stress distribution influence state, which is a key step in the demonstration of the reservation of process tunnels in multi-coal seam mining hard roof rock burst mines. This process uses rock mechanics simulation software such as FLAC3D or UDEC to simulate the pre-selected pressure relief methods, which can intuitively show the specific impact of these measures on the stress distribution of the working face, which helps decision makers to comprehensively analyze the effectiveness of pressure relief measures and the necessity of process tunnel excavation, ensuring that mining activities can effectively control costs and improve economic benefits while reducing rock burst risks and ensuring production safety.

[0040] Step S108, evaluating the mine based on the power assist state and the stress distribution influence state to obtain an evaluation result, wherein the evaluation result is used to indicate whether it is necessary to excavate a process tunnel in the mine.

[0041] The above-mentioned evaluation results may refer to the conclusion of whether it is necessary to excavate a process tunnel in the mine after analyzing the power-assisting state of the process tunnel and the influence of the preset pressure relief method on the stress distribution of the working face. The evaluation results may include but are not limited to the need to excavate a process tunnel in the mine and the need not to excavate a process tunnel in the mine. The specific evaluation results need to be determined according to the actual situation and are not limited here. The role of the evaluation results may include but are not limited to safety guidance, cost control and production planning.

[0042] In an optional embodiment, by analyzing the power-assisting state of the process tunnel and the influence of the preset pressure relief method on the stress distribution of the working face, an evaluation result is obtained as to whether it is necessary to excavate a process tunnel in the mine or not. The above evaluation result integrates geotechnical engineering analysis, economic cost considerations and the convenience of production operations, and provides scientific guidance for mine mining planning and prevention and control of rock burst. It not only helps to improve the safety of mine mining, but also can reasonably control mining costs while ensuring production efficiency, thereby promoting the sustainable development of mining enterprises.

[0043] In an embodiment of the present invention, the mine type and the tunnel parameters of the process tunnel of the mine are first obtained; then the power-assistance state of the process tunnel is determined based on the mine type and the tunnel parameters; then the process tunnel and the preset tunnel are subjected to pressure relief simulation based on a preset pressure relief method to obtain the stress distribution influence state of the working face; finally, the mine is evaluated based on the power-assistance state and the stress distribution influence state to obtain an evaluation result. It is easy to notice that the power-assistance state indicates whether the process tunnel reduces the stress level of the corresponding working face of the mine, and the stress distribution influence state indicates the influence of the excavation working face on the stress distribution of the working face. The present application first determines the power-assistance state by the mine type and the tunnel parameters, and then obtains the stress distribution influence state under the simulation state by pressure relief simulation. Finally, it is determined whether it is necessary to excavate the process tunnel in the mine by combining the power-assistance state of the process tunnel and the stress distribution influence state obtained by excavation simulation, thereby obtaining an evaluation result on whether the process tunnel is left, thereby solving the technical problem in the related art that it is difficult to evaluate whether the process tunnel is left or not.

[0044] Optionally, the mine is evaluated based on the power assist state and the stress distribution influence state to obtain an evaluation result, including: determining the target stress distribution of the working face based on the power assist state and the stress distribution influence state; and evaluating the mine based on the preset stress distribution and the target stress distribution to obtain an evaluation result.

[0045] The above-mentioned target stress distribution may refer to the stress state distribution reached by the working face after the implementation of pressure relief measures. The role of the target stress distribution may include but is not limited to helping engineers determine which pressure relief method, parameter setting and tunnel layout can most effectively control the stress of the working face and reduce the risk of rock burst.

[0046] The above-mentioned preset stress distribution may refer to the distribution of working face stress state predicted by numerical simulation or theoretical calculation based on the original geomechanical conditions of the mine and the mining scheme to be adopted before mining. The role of the preset stress distribution may include but is not limited to evaluating the feasibility of the mining scheme, predicting the potential risk of rock burst, and guiding the design of pressure relief measures and the decision on the reservation of process tunnels.

[0047] In an optional embodiment, the target stress distribution of the working face is determined by the assist state and the stress distribution influence state, and then the mine is evaluated by comparing the preset stress distribution with the target stress distribution to obtain the evaluation result. The above process can systematically check whether the mining plan can achieve the expected safety and efficiency goals, so as to make a decision on whether to excavate the process tunnel, which has a direct preventive effect on preventing disasters such as rock burst, and also promotes the optimization of mine mining technology and cost control, ensuring the sustainability and economic benefits of mine production activities.

[0048] Optionally, the mine is evaluated based on a preset stress distribution and a target stress distribution to obtain an evaluation result, including: in response to the target stress distribution being less than the preset stress distribution, determining that the evaluation result is that it is not necessary to excavate a process tunnel in the mine; in response to the target stress distribution being greater than or equal to the preset stress distribution, determining that the evaluation result is that it is necessary to excavate a process tunnel in the mine.

[0049] In an optional embodiment, the mine is evaluated by using the preset stress distribution and the target stress distribution to obtain different evaluation results. If the target stress distribution shows that the stress level of the working face is lower than the preset stress distribution, it indicates that the current anti-bumping and pressure relief measures are effective enough to ensure mining safety, and no additional excavation of process tunnels is required. On the contrary, if the target stress distribution shows that the stress level of the working face fails to meet the preset safety standard, that is, the target stress distribution is greater than or equal to the preset stress distribution, this indicates that there is a high risk of rock burst during the mining process, and it is necessary to excavate process tunnels to further implement pressure relief measures to ensure that the stress state of the working face meets the requirements of safe mining. The above process avoids the waste of resources caused by blindly excavating process tunnels, while also ensuring the effectiveness of anti-bumping measures, creating a safer, more economical and efficient mining environment for the mine.

[0050] Optionally, the method also includes: in response to a stress monitoring system being arranged in the mine, monitoring the working face based on the stress monitoring system to obtain a preset stress distribution; in response to no stress monitoring system being arranged in the mine, determining the preset stress distribution based on geological data of the area where the mine is located and the mine type.

[0051] The above-mentioned stress monitoring system may refer to an equipment system for real-time monitoring of the stress state of underground rock masses. The types of stress monitoring systems may include but are not limited to sensor monitoring systems, microseismic monitoring systems, and optical fiber strain monitoring systems. The specific stress monitoring system needs to be determined based on the type of monitoring data and the requirements of the on-site environment. No limitation is made here. The role of the stress monitoring system may include but is not limited to providing continuous monitoring data on the stress state of the working face, helping mine managers to timely understand the dynamic changes in stress, warn of natural disasters such as rock burst, and make real-time adjustments to mining activities.

[0052] The above-mentioned geological data may refer to various information related to the geological characteristics of the area where the mine is located, including rock type, stratigraphic structure, fault distribution, rock mass parameters, hydrogeological conditions, etc. The specific geological data needs to be determined according to the stress monitoring needs, and is not limited here. The role of geological data may include but is not limited to predicting the stress distribution of the working face, assessing the risk of rock burst, guiding the layout of tunnels and the formulation of pressure relief measures, etc.

[0053] The above monitoring methods may include but are not limited to the following:

[0054] The first method, stress sensor monitoring, directly measures stress changes inside the rock mass by installing stress sensors at key locations in tunnels and working faces.

[0055] The second method, microseismic monitoring, uses microseismic monitoring technology to detect and analyze tiny earthquake activities in real time to evaluate the stress state and stability of the rock mass.

[0056] The third method is acoustic emission monitoring, which monitors the acoustic emission signals generated by the rock mass under stress and evaluates the stress state and damage of the rock mass by analyzing the signal characteristics.

[0057] The monitoring method of the above stress monitoring system is only an example. The specific monitoring method needs to be determined according to the actual situation and is not limited here.

[0058] In an optional embodiment, before obtaining the evaluation result by comparing the preset stress distribution with the target stress distribution, it is necessary to first determine the preset stress distribution. When the mine is equipped with an advanced stress monitoring system, the system can collect the stress change data of the working face in real time and accurately, and determine the preset stress distribution through these data; on the contrary, if the mine has not yet deployed a stress monitoring system, then it is necessary to determine the preset stress distribution based on the geological data of the area where the mine is located and the mine type. The above process, regardless of whether the mine has a stress monitoring system, can achieve an accurate assessment of the stress state of the working face, laying the foundation for the subsequent design of pressure relief measures and the necessity assessment of process tunnels.

[0059] Optionally, the power assist state of the process tunnel is determined based on the mine type and tunnel parameters, including: in response to the mine type being a preset mine type, generating an excavation model of the mine based on the tunnel parameters, wherein the excavation model is used to simulate excavation of the process tunnel in the mine; determining a first stress distribution and a second stress distribution corresponding to the working face based on the excavation model, wherein the first stress distribution is used to represent the stress distribution of the working face of the excavation model before excavation of the process tunnel, and the second stress distribution is used to represent the stress distribution of the working face of the excavation model after excavation of the process tunnel; the power assist state is determined based on the first stress distribution and the second stress distribution.

[0060] The above-mentioned preset mine type may refer to a hard roof type rock burst mine.

[0061] The above-mentioned excavation model may refer to a virtual process tunnel excavation model generated based on the mine type and tunnel parameters.

[0062] The above-mentioned first stress distribution may refer to the original or existing stress distribution state of the working face before excavating the process tunnel, reflecting the stress characteristics of the rock mass before mining. The role of the first stress distribution may include but is not limited to being used for comparison with the second stress distribution, evaluating stress changes before and after excavation of the process tunnel, identifying the effectiveness of pressure relief measures, etc.

[0063] The above-mentioned second stress distribution may refer to the stress distribution state of the working face after the excavation of the process tunnel, which reflects the adjustment effect of the tunnel excavation on the rock stress. The role of the second stress distribution may include but is not limited to evaluating the impact of the process tunnel excavation on the pressure relief effect of the working face. By comparing and analyzing with the first stress distribution, it can be determined whether the pressure relief measures have achieved the expected effect and whether the process tunnel should be retained.

[0064] In an optional embodiment, the mine type is first determined to be a preset mine type, i.e., a hard roof type rock burst mine; then an excavation model is constructed based on the tunnel parameters of the preset mine type; and then the excavation model is used to simulate the process tunnel excavation process and its influence on the stress distribution of the working face. In the above process, after determining the first stress distribution of the working face before tunnel excavation, the excavation model is used to simulate the excavation of the process tunnel in the mine and determine the second stress distribution of the working face after excavation. Finally, by comparing and analyzing the first stress distribution and the second stress distribution, the pressure relief effect of the process tunnel excavation on the working face, i.e., the power-assisting state, can be clearly identified. This method of determining the power-assisting state of the process tunnel based on the excavation model can not only scientifically guide the optimization of tunnel layout and pressure relief measures, avoid unnecessary excavation costs and production complexity, but also ensure the effectiveness of rock burst prevention and control measures and ensure safe production in mines.

[0065] Optionally, pressure relief simulation is performed on the process tunnel and the preset tunnel based on a preset pressure relief method to obtain the stress distribution influence state of the working face, including: pressure relief simulation is performed on the process tunnel in the excavation model based on the preset pressure relief method to obtain a third stress distribution of the working face; pressure relief simulation is performed on the preset tunnel in the excavation model based on the preset pressure relief method to obtain a fourth stress distribution of the working face; and the stress distribution influence state is determined based on the third stress distribution and the fourth stress distribution.

[0066] The third stress distribution mentioned above may refer to the stress distribution state of the working surface after the pressure relief simulation of the process tunnel is performed.

[0067] The fourth stress distribution mentioned above may refer to the stress distribution state of the working face after the pressure relief simulation is performed on the preset tunnel.

[0068] In an optional embodiment, by simulating the decompression of the process tunnel and the preset tunnel, the third stress distribution and the fourth stress distribution of the working face can be obtained, and then the stress distribution influence state can be determined. The third stress distribution and the fourth stress distribution information obtained in the above process are of great value for predicting rock fracture, optimizing mining plans and improving mining efficiency. Through accurate simulation and analysis of stress distribution, more reasonable mining and support strategies can be formulated to ensure safe production of mines.

[0069] Optionally, the method also includes: obtaining rock stratification data and drilling data of the area where the mine is located; performing stress analysis on the mine based on the rock stratification data and drilling data to obtain stability parameters of the top rock strata corresponding to the mine; in response to the stability parameter being greater than or equal to a preset stability parameter, determining that the mine type is a preset mine type; in response to the stability parameter being less than a preset stability parameter, determining that the mine type is a non-preset mine type.

[0070] The above-mentioned rock stratification data may refer to the distribution of different rock strata in the area where the mine is located. The types of rock stratification data may include but are not limited to information such as rock thickness, rock type, rock physical properties, and chemical composition. The specific rock stratification data needs to be determined based on the stress analysis parameter requirements and is not limited here. Understanding the stratification of the rock strata helps to assess the stability of the mine and the potential risk of geological disasters.

[0071] The above-mentioned drilling data may refer to the data of physical, chemical and mechanical properties of underground rocks obtained through drilling activities. The drilling data type may include but is not limited to the depth of the borehole, the hardness of the rock, the development of fractures, etc. The specific drilling data needs to be determined according to the actual situation and is not limited here. The drilling data can be used to evaluate the stability of the rock formation and determine the mining conditions of the mine.

[0072] The above-mentioned stress analysis may refer to the study of the stress state of a mine and its surrounding rock mass when subjected to external forces. The types of stress analysis may include but are not limited to elastic stress analysis, plastic stress analysis, fracture mechanics analysis, etc. The specific stress analysis shall be determined according to the purpose of the analysis and actual needs, and is not limited here. The role of stress analysis may include but is not limited to predicting and evaluating the risks of rock deformation, fracture, etc. that may be encountered by a mine during the mining process, and taking corresponding support measures.

[0073] The above stability parameter may refer to the actual stability coefficient of the top rock layer of the mine obtained by stress analysis.

[0074] The above-mentioned preset stability parameters may refer to parameters set in advance for judging the stability of a mine. The role of the preset stability parameters may include but is not limited to comparing with the stability parameters to further determine the stability and type of the mine.

[0075] In an optional embodiment, by collecting rock stratification and drilling data in the area where the mine is located, stress analysis is performed using these data to obtain stability parameters of the top rock strata of the mine. If the stability parameter is greater than or equal to a preset stability parameter, it indicates that the mine type is the preset mine type, which means that its stability meets the expected safety standards; on the contrary, if the stability parameter is less than the preset stability parameter, it proves that the mine type is not the preset mine type, which means that there may be problems with its stability and further evaluation and possible reinforcement measures are needed. The above judgment strategy helps to ensure the safety of mine operations while optimizing resource allocation and mining efficiency.

[0076] In an optional embodiment, the preset stability parameter is set to 50. Based on the rock stratification data and drilling data in the working face range, it is calculated that the stability parameter of the top rock layer of the mine is 80.1-83.8. If it is greater than the preset stability parameter, the mine is a preset mine, that is, a hard roof type impact ground pressure mine.

[0077] In an optional embodiment, Figure 2 is a flow chart of an optional mine process tunnel assessment method according to an embodiment of the present invention, such as Figure 2 As shown in the figure, the evaluation method mainly includes the following steps: first, determine the mine type; then propose anti-bumping and pressure relief measures; then, study the impact of protective layer mining, compare and analyze the stress distribution before and after the process tunnel excavation, and compare and analyze the pressure relief effects of pressure relief measures implemented in different tunnels; then, propose judgment criteria; finally, conduct a comprehensive analysis to obtain the evaluation results.

[0078] In the above evaluation method, the mine type is determined, specifically, whether the mine is a preset mine type; the impact of protective layer mining is studied, specifically, the stability parameters of the top rock layer are determined based on the rock stratification data and drilling data of the mine area; the stress distribution before and after the excavation of the process tunnel is compared and analyzed, specifically, the power assistance state of the process tunnel is determined based on the mine type and tunnel parameters; the pressure relief effects of pressure relief measures implemented in different tunnels are compared and analyzed, specifically, the pressure relief simulation of the process tunnel and the preset tunnel is performed based on the preset pressure relief method to obtain the stress distribution influence state of the working face; finally, a comprehensive evaluation is performed based on the obtained power assistance state and stress distribution influence state to obtain the evaluation result.

[0079] According to another aspect of an embodiment of the present invention, a mine process tunnel assessment device is also provided, which can execute the mine process tunnel assessment method of the above embodiment. The specific implementation method and preferred application scenario are the same as the above embodiment and will not be repeated here.

[0080] Figure 3 It is a schematic diagram of a process tunnel assessment device for a mine according to an embodiment of the present invention. As shown in the figure, the device includes: an acquisition module 302, a first determination module 304, a simulation module 306, and an assessment module 308.

[0081] The acquisition module 302 is used to obtain the mine type and tunnel parameters of the process tunnel of the mine, wherein the process tunnel is used to achieve the purpose of pressure relief and anti-bumping in the mine, and the mine is a mine to be evaluated whether it is necessary to excavate the process tunnel; the first determination module 304 is used to determine the power-assisting state of the process tunnel based on the mine type and tunnel parameters, wherein the power-assisting state is used to indicate whether the process tunnel reduces the stress level of the corresponding working face of the mine, and the working face is used to indicate the area in the mine that is being mined or to be mined; the simulation module 306 is used to simulate the pressure relief of the process tunnel and the preset tunnel based on the preset pressure relief method, and obtain the stress distribution influence state of the working face, wherein the preset tunnel is a tunnel that has been excavated in the mine, and the stress distribution influence state is used to indicate the influence of the excavation working face on the stress distribution of the working face; the evaluation module 308 is used to evaluate the mine based on the power-assisting state and the stress distribution influence state, and obtain the evaluation result, wherein the evaluation result is used to indicate whether it is necessary to excavate the process tunnel in the mine.

[0082] Optionally, the evaluation module includes: a first determination unit, used to determine the target stress distribution of the working face based on the assist state and the stress distribution influence state; an evaluation unit, used to evaluate the mine based on the preset stress distribution and the target stress distribution to obtain an evaluation result.

[0083] Optionally, the evaluation unit comprises: a first determining subunit, for determining, in response to a target stress distribution being less than a preset stress distribution, that an evaluation result is that it is not necessary to excavate a process tunnel in the mine; and a second determining subunit, for determining, in response to a target stress distribution being greater than or equal to a preset stress distribution, that an evaluation result is that it is necessary to excavate a process tunnel in the mine.

[0084] Optionally, the device also includes: a monitoring module, used to respond to the presence of a stress monitoring system in the mine, monitor the working face based on the stress monitoring system, and obtain a preset stress distribution; a second determination module, used to respond to the absence of a stress monitoring system in the mine, and determine the preset stress distribution based on geological data of the area where the mine is located and the mine type.

[0085] Optionally, the first determination module includes: a generation unit, used to generate an excavation model of the mine based on the tunnel parameters in response to the mine type being a preset mine type, wherein the excavation model is used to simulate the excavation of a process tunnel in the mine; a second determination unit, used to determine a first stress distribution and a second stress distribution corresponding to the working face based on the excavation model, wherein the first stress distribution is used to represent the stress distribution of the working face of the excavation model before the excavation of the process tunnel, and the second stress distribution is used to represent the stress distribution of the working face of the excavation model after the excavation of the process tunnel; a third determination unit, used to determine the assistance state based on the first stress distribution and the second stress distribution.

[0086] Optionally, the simulation module includes: a first simulation unit, used to perform pressure relief simulation on the process tunnel in the excavation model based on a preset pressure relief method, and obtain a third stress distribution of the working face; a second simulation unit, used to perform pressure relief simulation on the preset tunnel in the excavation model based on a preset pressure relief method, and obtain a fourth stress distribution of the working face; a fourth determination unit, used to determine the stress distribution influence state based on the third stress distribution and the fourth stress distribution.

[0087] Optionally, the device also includes: an acquisition module, used to acquire rock stratification data and drilling data of the area where the mine is located; an analysis module, used to perform stress analysis on the mine based on the rock stratification data and drilling data to obtain stability parameters of the top rock strata corresponding to the mine; a third determination module, used to determine that the mine type is a preset mine type in response to a stability parameter being greater than or equal to a preset stability parameter; and a fourth determination module, used to determine that the mine type is not a preset mine type in response to a stability parameter being less than a preset stability parameter.

[0088] According to another aspect of an embodiment of the present invention, there is also provided an electronic device, comprising: one or more processors; a storage device for storing one or more programs; when the one or more programs are executed by one or more processors, the one or more processors execute the above-mentioned process tunnel assessment method of the mine.

[0089] The storage device in the above steps can be a kind of sequential logic circuit, a memory component used to store data and instructions, etc., mainly used to store programs and data; the processor can be a functional unit that interprets and executes instructions, and it has a unique set of operating commands, which can be called the instruction set of the processor, such as storage, loading, etc. are all operations; the storage device stores computer programs, which can be a set of instructions that can be recognized and executed by a computer, running on an electronic computer, and is an information tool that meets certain needs of people.

[0090] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein when the program is run, the processor of the device where the program is located is controlled to execute the above-mentioned mine process tunnel assessment method.

[0091] The computer storage medium in the above steps can be a medium used to store certain discontinuous physical quantities in a computer memory, and the computer storage medium mainly includes semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser disks, etc. The stored program included in the computer-readable storage medium can be a set of instructions that can be recognized and executed by a computer, running on an electronic computer, and is an information tool that meets certain needs of people.

[0092] According to another aspect of an embodiment of the present invention, there is also provided a computer program product, including a computer program, which, when executed by a processor, implements the above-mentioned method for evaluating the process tunnel of a mine.

[0093] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0094] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0095] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0096] In addition, 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-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0097] 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 (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0098] 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 evaluating a process tunnel of a mine, characterized in that: include: Acquire the mine type of the mine and the tunnel parameters of the process tunnel, wherein the process tunnel is used to achieve the purpose of pressure relief and anti-bumping of the mine, and the mine is a mine to be evaluated whether it is necessary to excavate the process tunnel; Determining the power-assisting state of the process roadway based on the mine type and the roadway parameters, wherein the power-assisting state is used to indicate whether the process roadway reduces the stress level of the corresponding working face of the mine, and the working face is used to indicate the area in the mine that is being mined or to be mined; Based on a preset pressure relief method, a pressure relief simulation is performed on the process tunnel and the preset tunnel to obtain a stress distribution influence state of the working face, wherein the preset tunnel is a tunnel that has been excavated in the mine, and the stress distribution influence state is used to represent the influence of excavating the working face on the stress distribution of the working face; The mine is evaluated based on the assisting state and the stress distribution influence state to obtain an evaluation result, wherein the evaluation result is used to indicate whether it is necessary to excavate the process tunnel in the mine.

2. The method for evaluating the process tunnel of a mine according to claim 1, characterized in that: The mine is evaluated based on the power-assisting state and the stress distribution influence state to obtain an evaluation result, including: determining a target stress distribution of the working surface based on the assist state and the stress distribution influence state; The mine is evaluated based on the preset stress distribution and the target stress distribution to obtain the evaluation result.

3. The method for evaluating the process tunnel of a mine according to claim 2, characterized in that: The mine is evaluated based on the preset stress distribution and the target stress distribution to obtain the evaluation result, including: In response to the target stress distribution being less than the preset stress distribution, determining that the evaluation result is that it is not necessary to excavate the process tunnel in the mine; In response to the target stress distribution being greater than or equal to the preset stress distribution, it is determined that the evaluation result is that the process tunnel needs to be excavated in the mine.

4. The mine process tunnel assessment method according to claim 2, characterized in that: The method further comprises: In response to a stress monitoring system being arranged in the mine, the working face is monitored based on the stress monitoring system to obtain the preset stress distribution; In response to the stress monitoring system not being arranged in the mine, the preset stress distribution is determined based on geological data of the area where the mine is located and the mine type.

5. The mine process tunnel assessment method according to claim 1, characterized in that: Determining the power assist state of the process tunnel based on the mine type and the tunnel parameters includes: In response to the mine type being a preset mine type, generating an excavation model of the mine based on the tunnel parameters, wherein the excavation model is used to simulate excavation of the process tunnel in the mine; Determine a first stress distribution and a second stress distribution corresponding to the working face based on the excavation model, wherein the first stress distribution is used to represent the stress distribution of the working face of the excavation model before the process tunnel is excavated, and the second stress distribution is used to represent the stress distribution of the working face of the excavation model after the process tunnel is excavated; The assist state is determined based on the first stress distribution and the second stress distribution.

6. The method for evaluating the process tunnel of a mine according to claim 1, characterized in that: Based on the preset pressure relief method, pressure relief simulation is performed on the process tunnel and the preset tunnel to obtain the stress distribution influence state of the working surface, including: Based on the preset pressure relief method, a pressure relief simulation is performed on the process tunnel in the excavation model to obtain a third stress distribution of the working face; Based on the preset pressure relief method, a pressure relief simulation is performed on the preset tunnel in the excavation model to obtain a fourth stress distribution of the working face; The stress distribution influencing state is determined based on the third stress distribution and the fourth stress distribution.

7. The method for evaluating the process tunnel of a mine according to claim 5, characterized in that: The method further comprises: Obtaining rock stratification data and drilling data of the area where the mine is located; Performing stress analysis on the mine based on the rock layer data and the drilling data to obtain stability parameters of the top rock layer of the mine; In response to the stability parameter being greater than or equal to a preset stability parameter, determining the mine type to be the preset mine type; In response to the stability parameter being less than the preset stability parameter, it is determined that the mine type is not the preset mine type.

8. An electronic device, characterized in that: include: A memory storing an executable program; A processor, configured to run the program, wherein the program executes the method according to any one of claims 1 to 7 when running.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is run, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that The invention comprises a computer program which, when executed by a processor, implements the method according to any one of claims 1 to 7.

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