Method and related equipment for simulating the effect of fault activation on the stability of underground surrounding rock

Abstract

The present invention provides a system for simulating the influence of fault activation on the stability of underground surrounding rock, including: a sample, used to simulate the spatial relationship between faults, underground engineering and surrounding rock; at least one strain detection unit, used to obtain the internal strain information of the sample, the strain detection unit is layered and arranged in the strain section of the sample; an acoustic emission unit, used to obtain the acoustic emission evolution characteristics of the sample, the acoustic emission unit is connected to the sample; a crack meter, used to obtain the dislocation displacement information of the fault in the sample, the crack meter is arranged in the crack measurement section of the sample; a load application unit, used to apply a load to the sample, the load application unit is connected to the sample. In this way, by setting the strain detection unit and the acoustic emission unit for monitoring, the integrity and accuracy of the monitoring results can be improved, and by setting the crack meter, the fault dislocation can be monitored, thereby improving the information availability and practicality of the simulation test system.

Description

Technical Field

[0001] The invention relates to the technical field of real model testing, and in particular to a method for simulating the influence of fault activation on the stability of underground surrounding rocks and related equipment. Background Art

[0002] When constructing underground projects, the geological conditions of the site may be complex and it may be necessary to cross fracture zones such as faults. The existence of faults may cause strange stress distribution in the nearby rock mass, as well as static and dynamic activity caused by the activation of faults by external disturbances, which will have a critical impact on the stability of the surrounding rock of underground projects. In particular, when the near-field fault is activated due to far-field earthquakes, near-field earthquakes may be induced, which will have a strong dynamic impact on underground projects. At this time, the surrounding rock of underground projects will be affected by fault activity caused by earthquake disturbances, and the effect of faults on the surrounding rock of underground projects will also be affected by the direct effect of earthquake disturbances on the surrounding rock of the project, resulting in increased complexity and difficulty in the analysis of the stability of the surrounding rock of underground projects.

[0003] In the process of studying the influence of fault activation on the stability of underground surrounding rock, it is necessary to monitor the fault activation deformation, deformation of the upper and lower walls of the fault, and deformation of the surrounding rock of the cavern. However, the current model test method can usually only simulate the tunnel or tunnel through the fault, and there is no systematic model test method for the study of fault activation in the structure where the fault is approximately parallel to the axis of the cavern. Summary of the invention

[0004] The present invention provides a system for simulating the influence of fault activation on the stability of underground surrounding rock, so as to solve the problem that the current model test method cannot simulate the structure in which the fault is approximately parallel to the axis of the cavern, and is not convenient for studying the influence of fault activation on the stability of underground surrounding rock.

[0005] In a first aspect, the present invention provides a system for simulating the effect of fault activation on the stability of underground surrounding rock, comprising:

[0006] Specimens, used to simulate the spatial relationship between faults, underground works and surrounding rock;

[0007] At least one strain detection unit, used to obtain internal strain information of the sample, the strain detection unit being layered on the strain section of the sample;

[0008] An acoustic emission unit, used to obtain the acoustic emission evolution characteristics of the sample, the acoustic emission unit being connected to the sample;

[0009] A crack meter, used to obtain the dislocation information of the fault layer in the sample, and the crack meter is arranged at the crack measuring section of the sample;

[0010] The load applying unit is used to apply a load to the sample, and the load applying unit is connected to the sample.

[0011] Optionally, the strain detection unit includes:

[0012] Two strain bricks, used to obtain strain information at the positions where the strain bricks are located;

[0013] A fixing plate, used to fix the strain bricks, wherein two strain bricks are fixed on a cross section of one side determined by the long side and the wide side of the fixing plate, and the outer sides of the two strain bricks are respectively aligned with the wide side of the fixing plate;

[0014] A fixing pile is used to fix the fixing plate, wherein the fixing pile is vertically fixed to the cross section on the other side of the fixing plate, and the geometric centers of the two fixing surfaces of the fixing pile and the strain brick coincide.

[0015] Optionally, the seam measuring section is the section where the center of the sample is located.

[0016] Optionally, when a plurality of strain sections are included, the strain sections are symmetrically arranged along both sides of the seam measuring section.

[0017] In a second aspect, the present invention further provides a method for simulating the influence of fault activation on the stability of underground surrounding rocks, which is used in a system for simulating the influence of fault activation on the stability of underground surrounding rocks as described in any one of the first aspects above, comprising:

[0018] Controlling the preparation of the sample to simulate the spatial relationship between the fault, underground engineering and surrounding rock;

[0019] Controlling at least one of the strain detection units to obtain internal strain information of the sample, wherein the strain detection units are layered on the strain cross section of the sample;

[0020] Controlling the acoustic emission unit to obtain the acoustic emission evolution characteristics of the sample, wherein the acoustic emission unit is connected to the sample;

[0021] Controlling the joint meter to obtain the dislocation information of the fault layer in the sample, wherein the joint meter is arranged at the joint measuring section of the sample;

[0022] The load applying unit is controlled to apply a load to the sample, and the load applying unit is connected to the sample.

[0023] Optionally, the controlling the preparation of the sample includes:

[0024] Determine the dimensional information of the sample by a testing machine;

[0025] Obtaining location and size information of the fault and the underground project;

[0026] Obtaining component information of the surrounding rock and the fault;

[0027] Casting the surrounding rock based on the size information of the sample, the component information of the surrounding rock, and the location and size information of the fault and the underground project;

[0028] The fault is cast according to the component information of the fault and the position and size information of the fault.

[0029] Optionally, the load includes a static load and a dynamic load, and the load includes a minimum principal stress direction load, an intermediate principal stress direction load and a maximum principal stress direction load, wherein the direction of the dynamic load is consistent with the direction of the maximum principal stress direction load.

[0030] In a third aspect, the present invention further provides a device for simulating the influence of fault activation on the stability of underground surrounding rocks, which is used in the method for simulating the influence of fault activation on the stability of underground surrounding rocks as described in any one of the second aspects above, comprising:

[0031] A first control module, used for controlling the preparation of the sample and simulating the spatial relationship between the fault, the underground engineering and the surrounding rock;

[0032] A second control module, used to control at least one of the strain detection units to obtain internal strain information of the sample, wherein the strain detection units are layered on the strain cross section of the sample;

[0033] A third control module, used for controlling the acoustic emission unit to obtain the acoustic emission evolution characteristics of the sample, the acoustic emission unit being connected to the sample;

[0034] A fourth control module, used for controlling the joint meter to obtain the dislocation information of the fault layer in the sample, wherein the joint meter is arranged at the joint measuring section of the sample;

[0035] A fifth control module is used to control the load applying unit to apply a load to the sample, wherein the load applying unit is connected to the sample.

[0036] In a fourth aspect, the present invention further provides an electronic device comprising a memory and a processor, wherein the processor is used to implement the steps of the method for simulating the impact of fault activation on the stability of underground surrounding rock as described in any one of the above-mentioned second aspects when executing a computer program stored in the memory.

[0037] In a fifth aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for simulating the impact of fault activation on the stability of underground surrounding rock as described in any one of the above-mentioned second aspects.

[0038] It can be seen from the above technical scheme that the present invention provides a system for simulating the influence of fault activation on the stability of underground surrounding rock, including: a sample, used to simulate the spatial relationship between faults, underground engineering and surrounding rock; at least one strain detection unit, used to obtain the internal strain information of the sample, and the strain detection unit is layered on the strain section of the sample; an acoustic emission unit, used to obtain the acoustic emission evolution characteristics of the sample, and the acoustic emission unit is connected to the sample; a crack meter, used to obtain the dislocation displacement information of the fault in the sample, and the crack meter is set on the crack measurement section of the sample; a load application unit, used to apply a load to the sample, and the load application unit is connected to the sample. In the process of studying the influence of fault activation on the stability of underground surrounding rock, it is necessary to monitor information such as fault activation deformation, deformation of the upper and lower plates of the fault, and deformation of the surrounding rock of the cavern. However, the current model test method can usually only simulate a tunnel or tunnel through a fault, and cannot simulate a structure in which the fault is approximately parallel to the axis of the cavern, which is not convenient for studying the influence of fault activation on the stability of underground surrounding rock. The embodiment of the present application improves the integrity and accuracy of the monitoring results by setting up a strain detection unit and an acoustic emission unit for monitoring, and monitors the fault displacement by setting up a crack meter. In this way, the information availability of the simulation test system can be improved, and the internal structure of the sample can be adjusted based on research needs, thereby improving the practicality of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 A schematic structural diagram of a system for simulating the effect of fault activation on the stability of underground surrounding rocks provided in an embodiment of the present application;

[0041] Figure 2 A schematic structural diagram of the spatial relationship between a fault and underground surrounding rock in a system for simulating the influence of fault activation on the stability of underground surrounding rock provided in an embodiment of the present application;

[0042] Figure 3 A schematic structural diagram of the spatial relationship between a fault and underground surrounding rock in a system for simulating the influence of fault activation on the stability of underground surrounding rock provided in an embodiment of the present application;

[0043] Figure 4 A schematic structural diagram of the spatial relationship between a fault and underground surrounding rock in a system for simulating the influence of fault activation on the stability of underground surrounding rock provided in an embodiment of the present application;

[0044] Figure 5A schematic structural diagram of the spatial relationship between a fault and underground surrounding rock in a system for simulating the influence of fault activation on the stability of underground surrounding rock provided in an embodiment of the present application;

[0045] Figure 6 The system for simulating the influence of fault activation on the stability of underground surrounding rock provided in the embodiment of the present application is Figure 2 A schematic structural diagram of a strain detection unit disposed on a strain section under the spatial relationship shown;

[0046] Figure 7 The system for simulating the influence of fault activation on the stability of underground surrounding rock provided in the embodiment of the present application is as follows: Figure 2 A schematic structural diagram of a seam meter disposed on a seam meter surface in the spatial relationship shown;

[0047] Figure 8 The system for simulating the influence of fault activation on the stability of underground surrounding rock provided in the embodiment of the present application is Figure 2 A schematic structural diagram of a strain detection unit under the spatial relationship shown;

[0048] Fig. 9 The system for simulating the influence of fault activation on the stability of underground surrounding rock provided in the embodiment of the present application is Figure 2 Schematic structural diagram of the distribution of strain cross section and measuring crack cross section in the specimen under the spatial relationship shown;

[0049] Fig.10 A schematic flow chart of a method for simulating the effect of fault activation on the stability of underground surrounding rock provided in an embodiment of the present application;

[0050] Fig.11 A schematic structural diagram of a device for simulating the effect of fault activation on the stability of underground surrounding rocks provided in an embodiment of the present application;

[0051] Fig.12 A schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0052] Fig.13 A schematic structural diagram of a computer-readable storage medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] The embodiments will be described in detail below, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following embodiments do not represent all implementation methods consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application as detailed in the claims. In the several embodiments provided in the embodiments of the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways, and the device embodiments described below are merely exemplary.

[0054] like Figure 1 As shown, the embodiment of the present application provides a system 100 for simulating the influence of fault activation on the stability of underground surrounding rocks, comprising:

[0055] Specimen 110, used to simulate the spatial relationship between faults, underground engineering and surrounding rock;

[0056] At least one strain detection unit 111, used to obtain internal strain information of the sample, the strain detection unit is layered on the strain section of the sample;

[0057] An acoustic emission unit 120, used to obtain the acoustic emission evolution characteristics of the sample, the acoustic emission unit is connected to the sample;

[0058] A crack meter 112, used to obtain the displacement information of the fault layer in the sample, and the crack meter is arranged at the crack measurement section of the sample;

[0059] The load applying unit 130 is used to apply a load to the sample, and the load applying unit is connected to the sample.

[0060] For example, the size information of the sample can be determined by the model of the testing machine, and the positional relationship and size information of the underground engineering, faults and underground surrounding rocks inside the sample can be determined based on similarity theory and sample size according to research requirements. Figures 2 to 5 As shown, Figures 2 to 5 A schematic structural diagram of the spatial relationship between faults and underground surrounding rocks for simulating the influence of fault activation on the stability of underground surrounding rocks, including: specimens, underground engineering, faults and underground surrounding rocks. Figures 2 to 5 The sample is prepared by using the spatial relationship in the sample and the size information of the sample. During the sample casting process, the shape, position and size of the fault can be controlled by controlling the distance between the isolation materials and the surface curvature.

[0061] For example, strain detection units can be arranged in layers based on research needs, and the detection results and detection time points of stress detection units can be recorded. The above strain detection units can be arranged around underground projects and faults, and the number of strain detection units in each layer should not exceed three. The material composition of the above strain detection unit can be the same as that of the above sample. Figure 6 The system for simulating the influence of fault activation on the stability of underground surrounding rock provided in the embodiment of the present application is Figure 2 The schematic structural diagram of the strain detection unit arranged on the strain section under the spatial relationship shown in FIG. Figure 2 Under the internal spatial relationship of the specimen shown in the figure, the spatial relationship of the strain detection unit on the strain section is as follows: Figure 6 As shown, it includes: a sample 600, an underground project 610, a fault 620, underground surrounding rock 630 and three strain detection units 601.

[0062] Exemplarily, the acoustic emission unit can be set on the surface of the sample, and when the surrounding rock is deformed, the ultrasonic information radiated by the friction and sliding of the internal fracture surface is obtained to continuously observe the dynamic evolution of microfractures inside the rock material, record the detection results of the acoustic emission unit, and further study the microscopic mechanism of rock deformation and destruction based on the above detection results. . The detection results of the recorded strain detection unit can be compared with the detection results recorded by the acoustic emission unit, and a unit difference interval can be set. Based on the comparison results of the above unit difference interval and the above two detection results, it is determined whether there is a fault. When the above comparison result is within the above unit difference interval, it can be determined that the above strain detection unit and the above acoustic emission unit are in normal working state. When the above comparison result is no longer within the above unit difference interval, it can be determined that the above strain detection unit and the above acoustic emission unit have a fault, and the fault time point can be recorded and an alarm message can be sent.

[0063] For example, the joint meter can be arranged perpendicular to the fault in the joint section and placed at the uppermost end of the fault hanging wall near the sample boundary. Figure 7 The system for simulating the influence of fault activation on the stability of underground surrounding rock provided in the embodiment of the present application is Figure 2 The schematic structural diagram of the joint meter being arranged on the joint meter surface under the spatial relationship shown in FIG. Figure 2 Under the internal spatial relationship of the specimen shown in the figure, the spatial relationship of the joint gauge in the joint section is as follows: Figure 7 As shown, it includes: a sample 700, an underground project 710, a fault 720, an underground surrounding rock 730 and a joint meter 702. The joint meter 702 is perpendicular to the axis of the upper fault section of the joint measurement section.

[0064] For example, based on research requirements, the disturbance load of the load application unit can be set, and the disturbance load can be applied to the sample through the load application unit to perform fault activation simulation.

[0065] By setting up strain detection units and acoustic emission units for collaborative detection, the integrity and accuracy of the test results can be improved. By setting up strain detection units in layers, it is possible to avoid arranging too many strain detection units on the same specimen section, which will increase the weakness of the section and increase the risk of section rupture, affecting the accuracy of the test results. By setting up a crack gauge to monitor the fault dislocation, the information availability of the simulation test system can be improved. The internal structure of the specimen can be adjusted based on research needs. The load application unit can be used to apply a disturbance load to simulate fault activation and improve the practicality of the system.

[0066] According to some embodiments, the strain detection unit comprises:

[0067] Two strain bricks, used to obtain strain information at the positions where the strain bricks are located;

[0068] A fixing plate, used to fix the strain bricks, wherein the two strain bricks are fixed on a cross section of one side determined by the long side and the wide side of the fixing plate, and the outer sides of the two strain bricks are respectively aligned with the wide side of the fixing plate;

[0069] The fixing pile is used to fix the fixing plate, wherein the fixing pile is vertically fixed to the cross section of the other side of the fixing plate, and the geometric centers of the fixing pile and the two fixing surfaces of the strain brick coincide with each other.

[0070] Exemplarily, the strain brick can be a cube, and the side length can be 1 / 20 to 1 / 15 times the size of the sample. The fixed plate can be a cuboid, the length of the long side of the fixed plate can be 3 to 4 times the side length of the strain brick, the length of the wide side can be consistent with the side length of the strain brick, and the height can be 1 / 2 to 1 times the side length of the strain brick. The fixed pile can be a cuboid, the length of the long side and the wide side of the fixed pile can be consistent with the side length of the strain brick, and the height of the fixed pile can be 2 to 3 times the side length of the strain brick. The strain brick can be set with a strain collection channel through the strain gauge on the strain flower, and the strain flower can include at least one strain gauge. On a strain brick, at least one strain flower can be set in parallel along the three sides of an angle, wherein the strain flower needs to be parallel to two of the three sides at the same time. A strain gauge connection end can be set on the surface of the strain brick corresponding to the strain flower, and each strain gauge can correspond to two connection points on the strain gauge connection end. The strain gauge connection end can be set in the empty space on the surface of the strain brick to which the strain flower belongs, and is parallel to one of the two sides parallel to the strain flower. The strain floweret may be connected to the strain gauge connection end via a connecting wire. When different strain gauges of the same strain floweret are connected to the strain gauge connection end, connecting wires of different colors may be used, and the connecting wires connected to the same strain gauge may be bound and numbered, wherein the numbering information may include at least one of a strain section number where the strain detection unit is located, a strain detection unit number, a strain brick number, a strain floweret number, and a strain gauge number.

[0071] like Figure 8 As shown, Figure 8 The system for simulating the influence of fault activation on the stability of underground surrounding rock provided in the embodiment of the present application is Figure 2 The schematic structural diagram of the strain detection unit in the spatial relationship shown includes: two strain bricks 801, a fixed plate 802 and a fixed column 803. The strain brick includes three strain rosettes and three strain gauge connection ends, wherein each strain rosette includes a 0° strain gauge, a 45° strain gauge and a 90° strain gauge, and each strain gauge connection end is parallel to the 0° strain gauge of the strain rosette.

[0072] By connecting the strain bricks with the fixed plates and the fixed piles, the stability of the strain detection unit during the pouring process can be improved, and the low accuracy of the detection results caused by the deviation of the strain detection unit during the pouring process can be avoided, thereby improving the practicality of the system.

[0073] According to some embodiments, the above-mentioned seam measuring cross section is the cross section where the center of the sample is located.

[0074] Exemplarily, when the number of the above-mentioned seam measuring sections is greater than one and is an odd number, a seam meter may be provided at the section where the center of the sample is located, and the remaining seam meters may be provided at symmetrical sections on both sides of the section where the center of the sample is located. When the number of the above-mentioned seam measuring sections is an even number, seam meters may be provided at symmetrical sections on both sides of the section where the center of the sample is located.

[0075] Determining the section where the center of the specimen is located as the joint measuring section can improve the monitoring quality of the joint meter, minimize the influence of the specimen thickness on the joint meter results, avoid the mismatch between the monitored fault displacement and the applied load, and affect the test results, thereby improving the reliability of the simulation and the practicality of the system.

[0076] According to some embodiments, when a plurality of the strain sections are included, the strain sections are symmetrically arranged along both sides of the seam measuring section.

[0077] Exemplarily, when the number of strain sections is an even number, based on the number of strain sections and the number of strain detection units to be arranged in each strain section, a group of two strain sections with an equal number of strain detection units can be set at the same distance from the joint section. When the number of strain sections is an even number and the number of strain detection units is not equal, the strain sections with the closest number of strain detection units can be set as a group of two strain sections and symmetrically arranged on both sides of the joint section, and the distance between the two strain sections in the above group and the joint section is determined based on the number of strain detection units. When the number of strain sections is a certain number, the strain sections can be evenly arranged on both sides of the joint section based on the number of strain detection units in the strain section.

[0078] like Fig. 9 As shown, taking the case where the specimen includes two strain sections as an example, Fig. 9 The system for simulating the influence of fault activation on the stability of underground surrounding rock provided in the embodiment of the present application is Figure 2 Schematic structural diagram of the distribution of strain sections and measuring joint sections in the specimen under the spatial relationship shown. Among them, 900 is the specimen, 911 is the first strain section, 912 is the second strain section, 920 is the measuring joint section, 930 is the underground project, the number of strain detection units in the first strain section 911 and the second strain section 912 are both 3, and the distance between the first strain section 911 and the measuring joint section 920 is equal to the distance between the second strain section 912 and the measuring joint section 920.

[0079] When the specimen includes multiple strain sections, the strain sections are symmetrically arranged on both sides of the measuring joint section to improve the stability of the strain sections and prevent the occurrence of weak surfaces, which may cause the detection results of the strain detection units on the weak surfaces to deviate greatly from the actual situation, affect the simulation effect, and lead to low practicality of the system. This can improve the accuracy and stability of the system and improve the applicability of the system.

[0080] like Fig.10 As shown, the embodiment of the present application also provides a method for simulating the influence of fault activation on the stability of underground surrounding rocks, which is used in the system 1000 for simulating the influence of fault activation on the stability of underground surrounding rocks. Fig.10 A schematic flow chart of a method for simulating the effect of fault activation on the stability of underground surrounding rock provided in an embodiment of the present application, the method comprising:

[0081] Step S1010, controlling the preparation of the above-mentioned samples to simulate the spatial relationship between faults, underground engineering and surrounding rocks.

[0082] Step S1020: Control at least one of the strain detection units to obtain internal strain information of the sample, wherein the strain detection units are layered on the strain cross section of the sample.

[0083] Step S1030: Control the acoustic emission unit to obtain the acoustic emission evolution characteristics of the sample, and the acoustic emission unit is connected to the sample.

[0084] Step S1040, controlling the above-mentioned joint meter to obtain the displacement information of the fault layer in the above-mentioned sample, and the above-mentioned joint meter is set at the joint measurement section of the above-mentioned sample.

[0085] Step S1050, controlling the load applying unit to apply a load to the sample, wherein the load applying unit is connected to the sample.

[0086] The above method can be used to prepare samples based on research needs, and the acoustic emission unit and strain detection unit can be used for collaborative detection to improve the integrity and accuracy of the test results. The layered strain detection unit can be used to improve the internal stability of the sample, so that the simulation results are closer to the actual state, thereby improving the accuracy of the test results. Setting up a crack meter to monitor the fault dislocation is convenient for researchers to analyze the strain state around the underground surrounding rock based on the fault activation, thereby improving the information availability of the system. Applying a disturbance load through the load application unit can simulate fault activation and improve the practicality and convenience of the system.

[0087] According to some embodiments, the controlling and preparing the sample comprises:

[0088] Determine the dimensional information of the above-mentioned specimens by means of a testing machine;

[0089] Obtaining the position and size information of the fault and the underground project, wherein the position and size information of the fault and the underground project is obtained by scaling the size information of the sample;

[0090] Obtaining composition information of the surrounding rock and the fault;

[0091] Based on the size information of the sample, the component information of the surrounding rock, and the location and size information of the fault and the underground project, pouring the surrounding rock;

[0092] Cast the fault according to the component information of the fault and the position and size information of the fault.

[0093] Exemplarily, the size information of the sample can be determined based on the allowable size of the sample of the testing machine and the research needs. The position and size information of the fault and underground engineering in the sample can be determined based on the similarity principle and the sample size. The casting material component information of the surrounding rock and the fault can be determined based on the research needs, wherein the casting material component information can be determined based on the required stiffness of the sample according to the similarity principle. The fault and underground engineering molds can be made according to the position and size information of the fault and underground engineering, and the molds can be used to occupy the position during the casting of the sample, and the strain detection unit can be placed during the casting process. After the casting of the sample is completed, the mold can be taken out, and the fault can be cast based on the component information of the fault.

[0094] By using the above casting method to cast samples based on similar principles, the consistency of the casting effect can be ensured, the casting steps can be simplified, the casting difficulty can be reduced, and the practicability of the method can be improved.

[0095] According to some embodiments, the above-mentioned load includes static load and dynamic load, and the above-mentioned load includes minimum principal stress direction load, intermediate principal stress direction load and maximum principal stress direction load, wherein the direction of the above-mentioned dynamic load is consistent with the direction of the above-mentioned maximum principal stress direction load.

[0096] Exemplarily, the static loads in the three directions may be applied at the same loading speed first. When the minimum principal stress load in the X direction reaches the corresponding set load, the minimum principal stress load in the X direction is kept unchanged, and the intermediate principal stress load in the Y direction and the maximum principal stress load are continuously loaded. When the intermediate principal stress load in the Y direction reaches the corresponding set load, the intermediate principal stress load in the Y direction is kept unchanged, and the maximum principal stress load in the Z direction is continuously loaded. When the maximum principal stress load in the Z direction reaches the corresponding set load, the dynamic load in the maximum principal stress Z direction is started to be applied to the corresponding set load while the maximum principal stress load in the Z direction is kept unchanged until the load in the Z direction reaches the corresponding set load.

[0097] For example, when the loading rate is 5kN / s, the set load corresponding to the minimum principal stress in the X direction is 8MPa, the set load corresponding to the intermediate principal stress in the Y direction is 10MPa, and the set load corresponding to the maximum principal stress in the Z direction is 12MPa. The dynamic load in the maximum principal stress in the Z direction is a sinusoidal load with an amplitude of 0.4MPa and a frequency of 1Hz. After the static load is applied, the surrounding rock remains stable as a whole, and the fault displacement is not obvious. However, after the dynamic load begins to be applied, the detection results of the acoustic emission unit and the strain detection unit begin to change. With the continuous application of the dynamic load, the ringing number and energy of the acoustic emission unit begin to increase suddenly, the strain near the fault increases suddenly, and even reverse strain begins to appear. The fault begins to displace, and the dislocation speed suddenly increases from slow to fast. After the dislocation displacement reaches a certain distance, the sample collapses as a whole.

[0098] The application of static loads can change the stress distribution inside the sample, so that the stress distribution inside the sample meets the research requirements and improves the authenticity and effectiveness of fault activation simulation. When the static load application reaches the stress environment required by the research, static loads or dynamic loads can be further applied to activate the fault, making it easier to obtain the effect of fault activation on the stability of the underground surrounding rock, thereby improving the accuracy and practicality of the model test method.

[0099] like Fig.11 As shown, Fig.11 A schematic structural diagram of an apparatus for simulating the effect of fault activation on the stability of underground surrounding rock provided in an embodiment of the present application.

[0100] The present application embodiment provides a device 1100 for simulating the influence of fault activation on the stability of underground surrounding rocks, the device comprising:

[0101] The first control module 1101 is used to control the preparation of the above-mentioned sample and simulate the spatial relationship between the fault, underground engineering and surrounding rock;

[0102] A second control module 1102 is used to control at least one of the strain detection units to obtain internal strain information of the sample, wherein the strain detection units are layered on the strain cross section of the sample;

[0103] A third control module 1103 is used to control the acoustic emission unit to obtain the acoustic emission evolution characteristics of the sample, and the acoustic emission unit is connected to the sample;

[0104] A fourth control module 1104 is used to control the joint meter to obtain the displacement information of the fault layer in the sample, and the joint meter is arranged at the joint measurement section of the sample;

[0105] The fifth control module 1105 is used to control the load applying unit to apply load to the sample, and the load applying unit is connected to the sample.

[0106] Device for simulating the effect of fault activation on the stability of underground surrounding rock Fig.10 To avoid repetition, the various processes implemented in the method embodiment are not described here.

[0107] like Fig.12 As shown, Fig.12 A schematic structural diagram of an electronic device provided in an embodiment of the present application.

[0108] The embodiment of the present application provides an electronic device 1200, including a memory 1210, a processor 1220, and a computer program 1211 stored in the memory 1210 and executable on the processor 1220. When the processor 1220 executes the computer program 1211, the following steps are implemented:

[0109] Control the preparation of the above specimens to simulate the spatial relationship between faults, underground engineering and surrounding rock;

[0110] Controlling at least one of the strain detection units to obtain internal strain information of the sample, wherein the strain detection units are layered on the strain cross section of the sample;

[0111] Controlling the acoustic emission unit to obtain the acoustic emission evolution characteristics of the sample, wherein the acoustic emission unit is connected to the sample;

[0112] Controlling the above-mentioned crack meter to obtain the dislocation information of the fault layer in the above-mentioned sample, wherein the above-mentioned crack meter is arranged at the crack measuring section of the above-mentioned sample;

[0113] The load applying unit is controlled to apply a load to the sample, and the load applying unit is connected to the sample.

[0114] In the specific implementation process, when the processor 1220 executes the computer program 1211, it can achieve Fig.10 Any implementation manner in the corresponding embodiments.

[0115] Since the electronic device introduced in this embodiment is a device used to implement a device in the embodiment of the present application, based on the method introduced in the embodiment of the present application, technical personnel in this field can understand the specific implementation method of the electronic device of this embodiment and its various variations. Therefore, how the electronic device implements the method in the embodiment of the present application is not introduced in detail here. As long as the equipment used by technical personnel in this field to implement the method in the embodiment of the present application is within the scope of protection of this application.

[0116] like Fig.13 As shown, Fig.13 A schematic structural diagram of a computer-readable storage medium provided in an embodiment of the present application.

[0117] This embodiment provides a computer-readable storage medium 1300, on which a computer program 1311 is stored. When the computer program 1311 is executed by a processor, the following steps are implemented:

[0118] Control the preparation of the above specimens to simulate the spatial relationship between faults, underground engineering and surrounding rock;

[0119] Controlling at least one of the strain detection units to obtain internal strain information of the sample, wherein the strain detection units are layered on the strain cross section of the sample;

[0120] Controlling the acoustic emission unit to obtain the acoustic emission evolution characteristics of the sample, wherein the acoustic emission unit is connected to the sample;

[0121] Controlling the above-mentioned crack meter to obtain the dislocation information of the fault layer in the above-mentioned sample, wherein the above-mentioned crack meter is arranged at the crack measuring section of the above-mentioned sample;

[0122] The load applying unit is controlled to apply a load to the sample, and the load applying unit is connected to the sample.

[0123] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0124] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0125] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1A device that provides the functions specified in a block or multiple blocks.

[0126] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0127] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0128] The present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device is caused to execute the following Fig.10 The process in the method of simulating the impact of fault activation on the stability of underground surrounding rock in the corresponding embodiment.

[0129] The above-mentioned computer program product includes one or more computer instructions. When the above-mentioned computer program instructions are loaded and executed on a computer, the above-mentioned process or function according to the embodiment of the present application is generated in whole or in part. The above-mentioned computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The above-mentioned computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the above-mentioned computer instructions may be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The above-mentioned computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integrated. The above-mentioned available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (solid state disk, SSD)), etc.

[0130] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0131] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as 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 an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0132] The units described above 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 network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0133] In addition, each functional unit in each embodiment of the present application 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.

[0134] If the above-mentioned 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 application is essentially 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 to enable 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 above-mentioned methods of each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0135] In summary, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A system for simulating the effect of fault activation on the stability of underground surrounding rock, characterized in that: include: Specimens, used to simulate the spatial relationship between faults, underground works and surrounding rock; At least one strain detection unit, used to obtain internal strain information of the sample, the strain detection unit being layered on the strain section of the sample; The strain detection unit comprises: Two strain bricks, used to obtain strain information at the positions where the strain bricks are located; A fixing plate, used to fix the strain bricks, wherein two strain bricks are fixed on a cross section of one side determined by the long side and the wide side of the fixing plate, and the outer sides of the two strain bricks are respectively aligned with the wide side of the fixing plate; A fixing pile, used to fix the fixing plate, wherein the fixing pile is vertically fixed to the cross section of the other side of the fixing plate, and the fixing pile and the two fixing surfaces of the strain brick coincide with the geometric center; An acoustic emission unit, used to obtain the acoustic emission evolution characteristics of the sample, the acoustic emission unit being connected to the sample; A crack meter, used for obtaining the dislocation information of the fault layer in the sample, wherein the crack meter is arranged at the crack measuring section of the sample; The load applying unit is used to apply a load to the sample, and the load applying unit is connected to the sample.

2. The system for simulating the effect of fault activation on the stability of underground surrounding rock according to claim 1, characterized in that: The measuring seam section is the section where the center of the sample is located.

3. The system for simulating the effect of fault activation on the stability of underground surrounding rock according to claim 1, characterized in that: In the case of including a plurality of the strain sections, the strain sections are symmetrically arranged along both sides of the seam measuring section.

4. A method for simulating the effect of fault activation on the stability of underground surrounding rocks, used in the system for simulating the effect of fault activation on the stability of underground surrounding rocks as claimed in claim 1, characterized in that: include: Controlling the preparation of the sample to simulate the spatial relationship between the fault, underground engineering and surrounding rock; Controlling at least one of the strain detection units to obtain internal strain information of the sample, wherein the strain detection unit is layered on the strain section of the sample, wherein the strain detection unit includes two strain bricks and a fixing plate; Controlling the two strain bricks to obtain strain information of the positions where the strain bricks are located; Controlling the fixing plate to fix the strain bricks, wherein the two strain bricks are fixed on a cross section of one side determined by the long side and the wide side of the fixing plate, and the outer sides of the two strain bricks are respectively aligned with the wide side of the fixing plate; Controlling the fixing pile to fix the fixing plate, wherein the fixing pile is vertically fixed to the cross section of the other side of the fixing plate, and the fixing pile and the two fixing surfaces of the strain brick coincide with each other in geometric center; Controlling the acoustic emission unit to obtain the acoustic emission evolution characteristics of the sample, wherein the acoustic emission unit is connected to the sample; Controlling the joint meter to obtain the dislocation information of the fault layer in the sample, wherein the joint meter is arranged at the joint measuring section of the sample; The load applying unit is controlled to apply a load to the sample, and the load applying unit is connected to the sample.

5. The method according to claim 4, characterized in that The controlling and preparing the sample comprises: Determine the dimensional information of the sample by a testing machine; Acquiring the position and size information of the fault and the underground project, wherein the position and size information of the fault and the underground project is obtained by scaling the size information of the sample; Obtaining component information of the surrounding rock and the fault; Casting the surrounding rock based on the size information of the sample, the component information of the surrounding rock, and the location and size information of the fault and the underground project; The fault is cast according to the component information of the fault and the position and size information of the fault.

6. The method according to claim 4, characterized in that The load includes static load and dynamic load, and the load includes minimum principal stress direction load, intermediate principal stress direction load and maximum principal stress direction load, wherein the direction of the dynamic load is consistent with the direction of the maximum principal stress direction load.

7. A device for simulating the influence of fault activation on the stability of underground surrounding rocks, used in the system for simulating the influence of fault activation on the stability of underground surrounding rocks as claimed in claim 1, characterized in that: include: A first control module, used for controlling the preparation of the sample and simulating the spatial relationship between the fault, the underground engineering and the surrounding rock; The second control module is used to control at least one of the strain detection units to obtain the internal strain information of the sample, and the strain detection unit is layered on the strain section of the sample; the strain detection unit includes: two strain bricks, which are used to obtain the strain information of the position of the strain bricks; a fixed plate, which is used to fix the strain bricks, wherein the two strain bricks are fixed on a cross section on one side determined by the long side and the wide side of the fixed plate, and the outer sides of the two strain bricks are respectively aligned with the wide side of the fixed plate; a fixed pile, which is used to fix the fixed plate, wherein the fixed pile is vertically fixed on the other side cross section of the fixed plate, and the fixed pile coincides with the geometric center of the two fixed surfaces of the strain brick; A third control module, used for controlling the acoustic emission unit to obtain the acoustic emission evolution characteristics of the sample, the acoustic emission unit being connected to the sample; A fourth control module, used for controlling the joint meter to obtain the dislocation information of the fault layer in the sample, wherein the joint meter is arranged at the joint measuring section of the sample; A fifth control module is used to control the load applying unit to apply a load to the sample, wherein the load applying unit is connected to the sample.

8. An electronic device, comprising a memory and a processor, characterized in that: The processor is used to implement the steps of the method for simulating the influence of fault activation on the stability of underground surrounding rocks as described in any one of claims 4 to 6 when executing the computer program stored in the memory.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for simulating the influence of fault activation on the stability of underground surrounding rocks are implemented as claimed in any one of claims 4 to 6.

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