Durability design method of anchor support system for underground engineering

Abstract

The purpose of this application is to address the durability issues of existing underground engineering projects, relating to the field of underground engineering safety technology, and to provide a durability design method for underground engineering anchorage support systems. The method includes the following steps: establishing long-term mechanical performance prediction models and energy absorption performance prediction models for anchorage support components; combining the design service life, environmental parameters, and surrounding rock parameters within the anchorage support range to obtain predicted mechanical performance parameters and energy absorption performance parameters for the anchorage support components under long-term support action; based on the prediction results and the rock mass parameters of the surrounding rock, designing anchorage support parameters under the mechanical and energy absorption prediction models, comparing and optimizing them to determine the optimal anchorage support design parameters for underground engineering, thereby achieving a scientific design for the durability of the underground engineering anchorage support system and ensuring the safety and stability of underground engineering projects.

Description

Technical Field

[0001] This application relates to the field of underground engineering safety technology, and in particular to a durability design method for an underground engineering anchoring support system. Background Technology

[0002] With the rapid development of my country's economic construction, shallow mineral resources are being depleted, and coal mining is gradually moving towards deeper areas. During tunnel excavation, anchoring support is the core technology for controlling the surrounding rock. Support components apply pre-tightening force to the surrounding rock, changing the triaxial stress state of the surrounding rock, improving the self-supporting capacity of the surrounding rock, and ensuring the safety and stability of underground engineering.

[0003] During the support process, the long-term effects of different environments cause changes in the mechanical properties and energy absorption properties of the support components, threatening the safety and stability of the support system. Therefore, studying the durability of anchored support components in underground engineering and establishing a durability design method for underground engineering anchored support systems is of great significance for improving the stability of support systems in engineering. Summary of the Invention

[0004] Therefore, it is necessary to provide a durability design method for underground engineering anchoring support systems to address the aforementioned technical problems.

[0005] Firstly, a durability design method for an underground engineering anchorage support system is provided, the method comprising:

[0006] Obtain the service life, environmental parameters, and rock mass parameters of the surrounding rock within the support range of the anchoring support components for the underground engineering to be planned;

[0007] The service life and environmental parameters are input into the pre-built long-term mechanical performance prediction model and long-term energy absorption performance prediction model, and the mechanical performance prediction parameters and energy absorption performance prediction parameters corresponding to the anchor support component are output.

[0008] Based on the rock mass parameters, the predicted mechanical properties and energy absorption properties of the anchored support components, the number of anchors for the anchored support components is determined, and the number of anchors for the anchored support components is used for anchored support design.

[0009] As an optional implementation, the rock mass parameters include one or more of the following: elastic strain energy, rock layer unit weight, rock layer thickness, and rock layer dip angle; determining the number of anchorages of the anchorage support member based on the rock mass parameters, the predicted mechanical performance parameters and energy absorption performance parameters corresponding to the anchorage support member includes:

[0010] Based on the unit weight of each rock layer, the thickness of each rock layer, the dip angle of each rock layer, and the mechanical performance prediction parameters corresponding to the anchoring support components, determine the first number of anchors that meet the requirements of the mechanical performance prediction parameters corresponding to the anchoring support components.

[0011] Based on the elastic strain energy and the predicted energy absorption performance parameters corresponding to the anchor support member, determine the second number of anchors that meet the requirements of the predicted energy absorption performance parameters corresponding to the anchor support member.

[0012] The maximum number of anchorages between the first number of anchorages and the second number of anchorages shall be taken as the number of anchorages of the anchorage support member.

[0013] As an optional implementation, the mechanical performance prediction parameter is the ultimate load. The formula for determining the first number of anchorages that meet the mechanical performance prediction parameter requirements of the anchorage support member based on the rock density, rock thickness, rock dip angle of each rock layer, and the mechanical performance prediction parameter corresponding to the anchorage support member is as follows:

[0014]

[0015] in, Indicates the number of the first anchorage. This represents the strength support coefficient, where n represents the number of rock layers. This represents the unit weight of the i-th rock layer. This represents the thickness of the i-th rock layer. Indicates the dip angle of the i-th rock layer. This indicates the ultimate load.

[0016] As an optional implementation, the energy absorption performance prediction parameter is the maximum absorbed energy; the formula for determining the number of second anchors that meet the energy absorption performance prediction parameter requirements corresponding to the anchor support member based on the elastic strain energy and the energy absorption performance prediction parameter corresponding to the anchor support member is as follows:

[0017]

[0018] in, Indicates the number of second anchorages. Indicates the energy absorption coefficient. Represents elastic strain energy. This indicates the maximum energy absorbed.

[0019] As an optional implementation, the environmental parameters include one or more of temperature, humidity, and cycle under different environmental conditions, and the method further includes:

[0020] Obtain the mechanical performance parameters and energy absorption performance parameters of the anchoring support component under different temperatures, humidity levels, and cycles;

[0021] The mechanical performance parameters and energy absorption performance parameters of the anchoring support component under different temperatures, humidity and cycle conditions are fitted to construct long-term mechanical performance prediction models and long-term energy absorption performance prediction models.

[0022] Secondly, a durability design device for an underground engineering anchorage support system is provided, the device comprising:

[0023] The first acquisition module is used to acquire the service life of the underground project to be planned, the environmental parameters of the underground project, and the rock mass parameters of the surrounding rock within the support range of the anchor support components.

[0024] The output module is used to input the service life and underground engineering environmental parameters into the pre-built long-term mechanical performance prediction model and long-term energy absorption performance prediction model, and output the mechanical performance prediction parameters and energy absorption performance prediction parameters corresponding to the anchor support component.

[0025] The determination module is used to determine the number of anchorages of the anchorage support component based on the rock mass parameters, the mechanical performance prediction parameters and energy absorption performance prediction parameters corresponding to the anchorage support component, and the number of anchorages of the anchorage support component is used for anchorage support design.

[0026] As an optional implementation, the rock mass parameters include one or more of the following: elastic strain energy, rock layer unit weight, rock layer thickness, and rock layer dip angle; the determining module is specifically used for:

[0027] Based on the unit weight of each rock layer, the thickness of each rock layer, the dip angle of each rock layer, and the mechanical performance prediction parameters corresponding to the anchoring support components, determine the first number of anchors that meet the requirements of the mechanical performance prediction parameters corresponding to the anchoring support components.

[0028] Based on the elastic strain energy and the predicted energy absorption performance parameters corresponding to the anchor support member, determine the second number of anchors that meet the requirements of the predicted energy absorption performance parameters corresponding to the anchor support member.

[0029] The maximum number of anchorages between the first number of anchorages and the second number of anchorages shall be taken as the number of anchorages of the anchorage support member.

[0030] As an optional implementation, the environmental parameters include one or more of temperature, humidity, and cycle time, and the device further includes:

[0031] The second acquisition module is used to acquire the mechanical performance parameters and energy absorption performance parameters of the anchoring support component under different conditions such as temperature, humidity and cycle.

[0032] The module is used to fit the mechanical performance parameters and energy absorption performance parameters of the anchoring support component under different conditions such as temperature, humidity and cycle, and to build a long-term mechanical performance prediction model and a long-term energy absorption performance prediction model.

[0033] Thirdly, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program executable on the processor, and the processor executes the computer program to perform the steps of the method described in the first aspect.

[0034] Fourthly, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the method as described in the first aspect.

[0035] This application provides a durability design method for an underground engineering anchoring support system. The technical solution provided by the embodiments of this application has at least the following beneficial effects:

[0036] The computer equipment acquires the service life of the planned underground engineering project, environmental parameters, and rock mass parameters of the surrounding rock within the support range of the anchored support components. Then, the computer equipment inputs the service life and environmental parameters into pre-constructed long-term mechanical performance prediction models and long-term energy absorption performance prediction models, outputting the corresponding mechanical performance prediction parameters and energy absorption performance prediction parameters for the anchored support components. Subsequently, based on the rock mass parameters and the corresponding mechanical and energy absorption performance prediction parameters, the computer equipment determines the number of anchors for the anchored support components. This number of anchors is used in the anchored support design, thereby achieving the durability design of the underground engineering anchored support system.

[0037] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A flowchart illustrating a method for constructing a prediction model as provided in an embodiment of this application;

[0040] Figure 2 A schematic diagram of a load versus elongation curve provided for an embodiment of this application;

[0041] Figure 3 A flowchart of a durability design method for an underground engineering anchorage support system provided in this application embodiment;

[0042] Figure 4 A flowchart illustrating a method for determining the number of components in an anchoring support system, provided for an embodiment of this application;

[0043] Figure 5 A flowchart illustrating an example of a durability design method for an underground engineering anchorage support system provided in this application embodiment;

[0044] Figure 6 A structural schematic diagram of a durability design device for an underground engineering anchorage support system provided in this application embodiment;

[0045] Figure 7 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0046] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0047] For ease of understanding, this application's embodiments prioritize the description of the construction methods for long-term mechanical performance prediction models and long-term energy absorption performance prediction models, such as... Figure 1 As shown, the specific processing steps are as follows:

[0048] Step 101: Obtain the mechanical performance parameters and energy absorption performance parameters of the anchoring support components under different conditions such as temperature, humidity and cycle.

[0049] In practice, the service life of underground engineering projects depends on the durability of their anchoring and support components. These components are typically embedded in rock strata. Therefore, the most crucial factor affecting the stability of anchoring and support components is their durability. Durability primarily considers environmental parameters such as temperature, humidity, and cycle time under different conditions. The mechanical and energy absorption performance parameters of the anchoring and support components can characterize their durability.

[0050] As an alternative implementation scheme: Since the impact of corrosion on the durability of anchorage support components varies under different corrosion concentrations, temperatures, and durations, researchers can set up different corrosion environments based on corrosion concentration and temperature, and further immerse the anchorage support components in these environments for varying durations. For example, the corrosion concentration range can be set to a1 to b1; the corrosion temperature range can be set to T1 to T2; and the corrosion duration can be set to d days, 2d days, and 3d days, meaning a set of anchorage support components is taken out every d days. To improve the accuracy of the experiment, each set of anchorage support components should contain at least 3 components.

[0051] After immersing anchorage support components in corrosion at different concentrations, temperatures, and durations, researchers can perform static performance tests on the components to obtain their mechanical and energy absorption parameters under these conditions. For example, Figure 2 As shown, static performance testing can obtain the load-elongation curves of the anchored support component. Based on these curves, computer equipment can further obtain the mechanical performance parameters and energy absorption performance parameters of the anchored support component. Among these, the mechanical performance parameters can be the ultimate load F. max The energy absorption performance parameter is the maximum absorbed energy E. max (Right now Figure 2 The area of ​​the shaded region enclosed by the curve of medium load and elongation and the x-axis.

[0052] Step 102: Fit the mechanical performance parameters and energy absorption performance parameters of the anchor support components under different temperatures, humidity and cycle conditions to construct long-term mechanical performance prediction models and long-term energy absorption performance prediction models.

[0053] In implementation, after the computer equipment obtains the mechanical performance parameters and energy absorption performance parameters of the anchorage support component under different temperatures, humidity levels, and cycles, it can further perform fitting processing on these parameters to construct long-term mechanical performance prediction models and long-term energy absorption performance prediction models. The long-term mechanical performance prediction model can be a prediction model between the mechanical performance parameters and the cycle, or between the mechanical performance parameters and the cycle and humidity, or between the mechanical performance parameters and the cycle, humidity, and temperature, etc., and this application embodiment does not limit this. Similarly, the long-term energy absorption performance prediction model can be a prediction model between the energy absorption performance parameters and the cycle, or between the energy absorption performance parameters and the cycle and humidity, or between the energy absorption performance parameters and the cycle, humidity, and temperature, etc., and this application embodiment does not limit this. Optionally, the model fitting algorithm can be the SVI (Stochastic Volatility Inspired) model fitting algorithm, or other types of model fitting algorithms, and this application embodiment does not limit this.

[0054] The following will describe in detail, with reference to specific implementation methods, a durability design method for an underground engineering anchorage support system provided in this application, such as... Figure 3 As shown, the specific steps are as follows:

[0055] Step 301: Obtain the service life, environmental parameters, and rock mass parameters of the surrounding rock within the support range of the anchoring support components for the underground project to be planned.

[0056] In implementation, based on the introduction in steps 101 and 102, when planning the anchoring support components for underground engineering projects, it is necessary to consider the service life and environmental parameters of the underground engineering project to be planned. Simultaneously, the primary function of the anchoring support components is to support the surrounding rock within the underground engineering project. Therefore, when planning the anchoring support components for underground engineering projects, it is also necessary to consider the rock mass parameters of the surrounding rock within the support range of the anchoring support components. Based on this, the computer equipment needs to obtain the service life, environmental parameters, and rock mass parameters of the surrounding rock within the support range of the underground engineering project to be planned.

[0057] Step 302: Input the service life and environmental parameters into the pre-built long-term mechanical performance prediction model and long-term energy absorption performance prediction model, and output the mechanical performance prediction parameters and energy absorption performance prediction parameters corresponding to the anchor support component.

[0058] In implementation, after obtaining the service life and environmental parameters of the underground project, the computer equipment can input these parameters into pre-built long-term mechanical performance prediction models and long-term energy absorption performance prediction models, respectively. Correspondingly, the long-term mechanical performance prediction model can output the predicted mechanical performance parameters of the anchorage support components of the underground project, and the long-term energy absorption performance prediction model can output the predicted energy absorption performance parameters of the anchorage support components. Specifically, the predicted mechanical performance parameters of the anchorage support components are the predicted mechanical performance parameters obtained after the service life of the underground project in its environment, and the predicted energy absorption performance parameters are the predicted energy absorption performance parameters obtained after the service life of the underground project in its environment.

[0059] Step 303: Determine the number of anchorages for the anchorage support components based on the rock mass parameters, the predicted mechanical properties of the anchorage support components, and the predicted energy absorption properties. The number of anchorages for the anchorage support components is used in the anchorage support design.

[0060] During implementation, after obtaining the predicted mechanical and energy absorption performance parameters of the anchored support components, the computer equipment can further determine the number of anchorages for the anchored support components based on the rock mass parameters and these parameters. This allows underground engineering construction personnel to plan the spacing scheme of the anchored support components according to the number of anchorages required.

[0061] As an optional implementation, the rock mass parameters include one or more of the following: elastic strain energy, rock layer unit weight, rock layer thickness, and rock layer dip angle. For example... Figure 4 As shown, the computer equipment determines the number of anchorages for the anchorage support components based on rock mass parameters, predicted mechanical properties of the anchorage support components, and predicted energy absorption properties, as follows:

[0062] Step 401: Based on the unit weight of each rock layer, the thickness of each rock layer, the dip angle of each rock layer, and the mechanical performance prediction parameters corresponding to the anchoring support components, determine the first number of anchors that meet the requirements of the mechanical performance prediction parameters corresponding to the anchoring support components.

[0063] In implementation, the anchoring support components need to be able to provide mechanical support against the weight of the surrounding rock within the support area. The weight of the surrounding rock within the support area is related to the unit weight of each rock layer, the thickness of each rock layer, and the dip angle of each rock layer. Therefore, computer equipment can determine the first number of anchors that meet the predicted mechanical performance parameters of the anchoring support components based on the unit weight of each rock layer, the thickness of each rock layer, the dip angle of each rock layer, and the predicted mechanical performance parameters of the anchoring support components.

[0064] Optionally, the mechanical performance prediction parameter is the ultimate load. The computer equipment determines the first number of anchorages that meet the mechanical performance prediction parameter requirements of the anchorage support components based on the rock layer unit weight, rock layer thickness, rock layer dip angle, and the corresponding mechanical performance prediction parameters of each rock layer. The formula is as follows:

[0065]

[0066] in, Indicates the number of the first anchorage. This represents the strength support coefficient, where n represents the number of rock layers. This represents the unit weight of the i-th rock layer. This represents the thickness of the i-th rock layer. Indicates the dip angle of the i-th rock layer. This indicates the ultimate load.

[0067] Step 402: Based on the elastic strain energy and the predicted energy absorption performance parameters corresponding to the anchorage support members, determine the number of second anchorages that meet the requirements of the predicted energy absorption performance parameters corresponding to the anchorage support members.

[0068] In implementation, the anchored support components need to be able to absorb energy from the surrounding rock within the support area, and the energy of the surrounding rock within the support area is related to the elastic strain energy. Therefore, computer equipment can determine the number of second anchors that meet the energy absorption performance prediction parameters corresponding to the anchored support components based on the elastic strain energy and the predicted parameters of the energy absorption performance corresponding to the anchored support components.

[0069] Optionally, the energy absorption performance prediction parameter is the maximum absorbed energy; the computer equipment determines the number of second anchors that meet the energy absorption performance prediction parameter requirements of the anchor support component based on the elastic strain energy and the corresponding energy absorption performance prediction parameter:

[0070]

[0071] in, Indicates the number of second anchorages. Indicates the energy absorption coefficient. Represents elastic strain energy. This indicates the maximum energy absorbed.

[0072] Step 403: The maximum number of anchorages between the first number of anchorages and the second number of anchorages is taken as the number of anchorages of the anchorage support member.

[0073] In implementation, after the computer equipment obtains the first and second anchorage numbers, it can use the maximum anchorage number between the first and second anchorage numbers as the anchorage number of the anchorage support component. In this way, the anchorage support component can ensure that it provides mechanical support and energy absorption support for the surrounding rock within the support range.

[0074] Figure 5 A flowchart illustrating an example of a durability design method for an underground engineering anchorage support system provided in this application embodiment. Figure 5 As shown, in the durability design method of underground engineering anchorage support systems, for different environmental parameters (temperature, humidity, and cycle), researchers conduct durability tests on the anchorage support components under different temperature, humidity, and cycle conditions. After the durability tests, researchers can perform static performance tests on the anchorage support components to obtain the corresponding mechanical performance parameters and energy absorption performance parameters under different temperature, humidity, and cycle conditions, and generate a database of performance parameters (i.e., mechanical performance parameters and energy absorption performance parameters) and environmental parameters. Then, based on the performance parameter and environmental parameter database, computer equipment can perform fitting processing on the mechanical performance parameters and energy absorption performance parameters of the anchorage support components under different temperature, humidity, and cycle conditions to construct long-term mechanical performance prediction models and long-term energy absorption performance prediction models. Afterwards, the computer equipment inputs the engineering service life and environmental parameters into the pre-constructed long-term mechanical performance prediction models and long-term energy absorption performance prediction models, and outputs the corresponding mechanical performance prediction parameters and energy absorption performance prediction parameters of the anchorage support components. Finally, the computer equipment determines the number of anchorages for the anchorage support components based on the rock mass parameters, the predicted mechanical properties of the anchorage support components, and the predicted energy absorption properties. The number of anchorages for the anchorage support components is used in the anchorage support design. Optionally, the computer equipment can further optimize the long-term mechanical property prediction model and the long-term energy absorption property prediction model based on the on-site application conditions of the underground engineering project, thereby improving the prediction accuracy of these models.

[0075] This application provides a durability design method for an underground engineering anchorage support system. A computer device acquires the service life, environmental parameters, and rock mass parameters of the surrounding rock within the support range of the anchorage support components for the planned underground engineering project. Then, the computer device inputs the service life and environmental parameters into a pre-constructed long-term mechanical performance prediction model and a long-term energy absorption performance prediction model, outputting the corresponding mechanical performance prediction parameters and energy absorption performance prediction parameters for the anchorage support components. Subsequently, based on the rock mass parameters and the corresponding mechanical performance prediction parameters and energy absorption performance prediction parameters, the computer device determines the number of anchorages for the anchorage support components. The number of anchorages is used in the anchorage support design, thereby achieving the durability design of the underground engineering anchorage support system.

[0076] It should be understood that, although Figure 1 , Figure 3 and Figure 4 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 1 , Figure 3 and Figure 4 At least some of the steps in the process may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but may be executed at different times. The execution order of these steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least some of the steps or stages in other steps.

[0077] It is understood that the same / similar parts between the various embodiments of the methods described above in this specification can be referred to each other. Each embodiment focuses on the differences from other embodiments, and relevant parts can be referred to the description of other method embodiments.

[0078] This application also provides a durability design device for underground engineering anchorage support components, such as... Figure 6 As shown, the device includes:

[0079] The first acquisition module 610 is used to acquire the service life, environmental parameters, and rock mass parameters of the surrounding rock within the support range of the anchor support components of the underground project to be planned.

[0080] The output module 620 is used to input the service life and environmental parameters into the pre-built long-term mechanical performance prediction model and long-term energy absorption performance prediction model, and output the mechanical performance prediction parameters and energy absorption performance prediction parameters corresponding to the anchor support component.

[0081] The determination module 630 is used to determine the number of anchorages of the anchorage support components based on the rock mass parameters, the predicted mechanical properties of the anchorage support components, and the predicted energy absorption properties. The number of anchorages of the anchorage support components is used for anchorage support design.

[0082] As an optional implementation, the rock mass parameters include one or more of the following: elastic strain energy, rock layer unit weight, rock layer thickness, and rock layer dip angle; the determining module 630 is specifically used for:

[0083] Based on the unit weight of each rock layer, the thickness of each rock layer, the dip angle of each rock layer, and the predicted mechanical performance parameters of the anchor support components, determine the first number of anchors that meet the requirements of the predicted mechanical performance parameters of the anchor support components.

[0084] Based on the elastic strain energy and the predicted energy absorption performance parameters corresponding to the anchorage support components, determine the number of second anchorages that meet the requirements of the predicted energy absorption performance parameters corresponding to the anchorage support components.

[0085] The maximum number of anchorages between the first and second anchorages shall be taken as the number of anchorages for the anchorage support member.

[0086] As an optional implementation, the environmental parameters include one or more of temperature, humidity, and cycle time, and the device further includes:

[0087] The second acquisition module is used to acquire the mechanical performance parameters and energy absorption performance parameters of the anchoring support components under different conditions such as temperature, humidity and cycle.

[0088] The module is used to fit the mechanical performance parameters and energy absorption performance parameters of the anchor support components under different conditions such as temperature, humidity and cycle, and to build long-term mechanical performance prediction models and long-term energy absorption performance prediction models.

[0089] This application provides a durability design device for an underground engineering anchorage support system. A first acquisition module 610 acquires the service life, environmental parameters, and rock mass parameters of the surrounding rock within the support range of the anchorage support components of the underground engineering project to be planned. An output module 620 inputs the service life and environmental parameters into a pre-constructed long-term mechanical performance prediction model and a long-term energy absorption performance prediction model, and outputs the mechanical performance parameters and energy absorption performance parameters corresponding to the anchorage support components. A determination module 630 determines the number of anchorages for the anchorage support components based on the rock mass parameters, the corresponding mechanical performance parameters, and the energy absorption performance parameters. The number of anchorages is used for anchorage support design, thereby realizing the durability design of the underground engineering anchorage support system.

[0090] Specific limitations regarding the durability design device for underground engineering anchorage support systems can be found in the limitations on the durability design method for underground engineering anchorage support systems described above, and will not be repeated here. Each module in the aforementioned durability design device for underground engineering anchorage support systems can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0091] In one embodiment, a computer device is provided, such as Figure 7 As shown, it includes a memory and a processor. The memory stores a computer program that can run on the processor. When the processor executes the computer program, it implements the steps of the above-mentioned durability design method for underground engineering anchoring support system.

[0092] In one embodiment, a computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the steps of the above-described method for the durability design of underground engineering anchorage support systems.

[0093] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0094] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0095] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display, data used for analysis, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0096] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0097] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A durability design method for an underground engineering anchorage support system, characterized in that, The method comprises: Obtain the service life, environmental parameters, and rock mass parameters of the surrounding rock within the support range of the anchoring support components for the underground engineering to be planned; The service life and environmental parameters are input into the pre-built long-term mechanical performance prediction model and long-term energy absorption performance prediction model, and the mechanical performance prediction parameters and energy absorption performance prediction parameters corresponding to the anchor support component are output. Based on the rock mass parameters, the predicted mechanical properties and energy absorption properties of the anchoring support components, the number of anchoring components is determined, and the number of anchoring components is used for anchoring support design. The rock mass parameters include one or more of the following: elastic strain energy, rock layer unit weight, rock layer thickness, and rock layer dip angle. Based on the rock mass parameters, the predicted mechanical performance parameters and energy absorption performance parameters corresponding to the anchoring support components, the number of anchoring components is determined, including: Based on the unit weight of each rock layer, the thickness of each rock layer, the dip angle of each rock layer, and the mechanical performance prediction parameters corresponding to the anchoring support components, determine the first number of anchors that meet the requirements of the mechanical performance prediction parameters corresponding to the anchoring support components. Based on the elastic strain energy and the predicted energy absorption performance parameters corresponding to the anchor support member, determine the second number of anchors that meet the requirements of the predicted energy absorption performance parameters corresponding to the anchor support member. The maximum number of anchorages between the first number of anchorages and the second number of anchorages shall be taken as the number of anchorages of the anchorage support member.

2. The method according to claim 1, characterized in that, The mechanical performance prediction parameter is the ultimate load. The formula for determining the first number of anchorages that meet the mechanical performance prediction parameter requirements of the anchorage support component, based on the rock stratum unit weight, rock stratum thickness, rock stratum dip angle, and the mechanical performance prediction parameter corresponding to the anchorage support component, is as follows: in, Indicates the number of the first anchorage. This represents the strength support coefficient, where n represents the number of rock layers. h represents the unit weight of the i-th rock layer. i α represents the thickness of the i-th rock layer. i F represents the dip angle of the i-th rock layer. max This indicates the ultimate load.

3. The method according to claim 1, characterized in that, The energy absorption performance prediction parameter is the maximum absorbed energy; the formula for determining the number of second anchors that meet the energy absorption performance prediction parameter requirements of the anchor support component based on the elastic strain energy and the corresponding energy absorption performance prediction parameter is as follows: in, Indicates the number of second anchorages. Indicates the energy absorption coefficient. Represents elastic strain energy. This indicates the maximum energy absorbed.

4. The method according to claim 1, characterized in that, The environmental parameters include one or more of temperature, humidity, and cycle under different environmental conditions, and the method further includes: Obtain the mechanical performance parameters and energy absorption performance parameters of the anchoring support component under different temperature, humidity and cycle conditions; The mechanical performance parameters and energy absorption performance parameters of the anchoring support component under different temperatures, humidity and cycle conditions are fitted to construct long-term mechanical performance prediction models and long-term energy absorption performance prediction models.

5. A durability design device for an underground engineering anchoring support system, characterized in that, The device comprises: The first acquisition module is used to acquire the service life, environmental parameters, and rock mass parameters of the surrounding rock within the support range of the anchor support components of the underground project to be planned. The output module is used to input the service life and environmental parameters into the pre-built long-term mechanical performance prediction model and long-term energy absorption performance prediction model, and output the mechanical performance prediction parameters and energy absorption performance prediction parameters corresponding to the anchor support component. The determination module is used to determine the number of anchorages for the anchorage support component based on the rock mass parameters, the predicted mechanical performance parameters and energy absorption performance parameters corresponding to the anchorage support component. The number of anchorages for the anchorage support component is used for anchorage support design. The rock mass parameters include one or more of the following: elastic strain energy, rock layer unit weight, rock layer thickness, and rock layer dip angle. Based on the rock layer unit weight, rock layer thickness, rock layer dip angle, and the predicted mechanical performance parameters corresponding to the anchorage support component, a first number of anchorages that meets the requirements of the predicted mechanical performance parameters corresponding to the anchorage support component is determined. Based on the elastic strain energy and the predicted energy absorption performance parameters corresponding to the anchorage support component, a second number of anchorages that meets the requirements of the predicted energy absorption performance parameters corresponding to the anchorage support component is determined. The maximum number of anchorages between the first number and the second number of anchorages is taken as the number of anchorages for the anchorage support component.

6. The apparatus according to claim 5, characterized in that, The environmental parameters of the underground project include one or more of temperature, humidity, and cycle time, and the device further includes: The second acquisition module is used to acquire the mechanical performance parameters and energy absorption performance parameters of the anchoring support component under different temperature, humidity and cycle conditions; The module is used to fit the mechanical performance parameters and energy absorption performance parameters of the anchoring support component under different temperatures, humidity and cycle conditions, and to build a long-term mechanical performance prediction model and a long-term energy absorption performance prediction model.

7. A computer device, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 4.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 4.

Images