CN116148435A - Method for simulating influence of fault activation on stability of underground surrounding rock and related equipment - Google Patents
Method for simulating influence of fault activation on stability of underground surrounding rock and related equipment Download PDFInfo
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Abstract
The invention provides a system for simulating the influence of fault activation on the stability of underground surrounding rock, which comprises the following components: the sample is used for simulating the spatial relationship among faults, underground engineering and surrounding rocks; the strain detection unit is used for acquiring internal strain information of the sample and is arranged on a strain section of the sample in a layered manner; the acoustic emission unit is used for acquiring acoustic emission evolution characteristics of the test sample and is connected with the test sample; the joint meter is used for acquiring dislocation displacement information of a fault in the sample and is arranged on a joint section of the sample; and the load applying unit is used for applying load to the sample and is connected with the sample. Like this, monitor through setting up strain detection unit and sound emission unit, can improve the integrality and the accuracy of monitoring result, can monitor fault dislocation condition through setting up the seam meter, and then can improve analogue test system's information availability and practicality.
Description
Technical Field
The invention relates to the technical field of real model tests, in particular to a method and related equipment for simulating the influence of fault activation on stability of underground surrounding rock.
Background
Because the geological condition of the site selection position is complex when the underground engineering is constructed, the situation that broken bands such as faults and the like need to be traversed can occur. The stress distribution in the nearby rock body caused by faults is singular, and the static and dynamic activity phenomenon generated by the external disturbance activation of the faults can have critical influence on the stability of surrounding rock of underground engineering. Particularly, in the case that the far-field earthquake action causes the activation of the near-field fault, the near-field earthquake can be induced, so that a strong dynamic impact action is generated on underground engineering. Because the surrounding rock of the underground engineering at the moment can be subjected to the action effect of the faults on the surrounding rock of the underground engineering due to the fault activity caused by the seismic disturbance, and can also be subjected to the direct action of the seismic disturbance on the surrounding rock of the engineering, the complexity of analyzing the stability of the surrounding rock of the underground engineering is improved, and the difficulty is increased.
In the research process of fault activation on the stability of underground surrounding rock, information such as fault activation deformation, fault upper and lower disc deformation conditions, and tunnel surrounding rock deformation conditions needs to be monitored. However, the current model test method can only simulate a through fault tunnel or tunnel, and no systematic model test method exists for fault activation research under the structure that faults are approximately parallel to the axis of a cavity.
Disclosure of Invention
The invention provides a system for simulating the influence of fault activation on the stability of underground surrounding rock, which aims to solve the problems that the existing model test method cannot simulate a structure with a fault approximately parallel to the axis of a grotto and is inconvenient to study the influence of fault activation on the stability of underground surrounding rock.
In a first aspect, the present invention provides a system for modeling the effect of fault activation on subsurface surrounding rock stability, comprising:
the sample is used for simulating the spatial relationship among faults, underground engineering and surrounding rocks;
the strain detection unit is used for acquiring internal strain information of the sample and is arranged on a strain section of the sample in a layered manner;
the acoustic emission unit is used for acquiring acoustic emission evolution characteristics of the test sample and is connected with the test sample;
the joint meter is used for acquiring dislocation displacement information of a fault in the sample and is arranged on a joint section of the sample;
and the load applying unit is used for applying load to the sample and is connected with the sample.
Optionally, the strain detection unit includes:
the two strain bricks are used for acquiring strain information of the positions of the strain bricks;
the fixing plate is used for fixing the strain bricks, wherein two strain bricks are fixed on the cross section of one side defined by the long side and the wide side of the fixing plate, and the outer side edges of the two strain bricks are respectively aligned with the wide side of the fixing plate;
and the fixing piles are used for fixing the fixing plates, wherein the fixing piles are vertically fixed on the cross section of the other side of the fixing plates, and the geometric centers of the fixing piles and the two fixing surfaces of the strain bricks are coincident.
Optionally, the section of the seam is the section where the center of the sample is located.
Optionally, in the case of including a plurality of the strain sections, the strain sections are symmetrically disposed along two sides of the seam-measuring section.
In a second aspect, the present invention also provides a method of modeling the effect of fault activation on subsurface surrounding rock stability, for use in a system for modeling the effect of fault activation on subsurface surrounding rock stability as described in any one of the first aspects above, comprising:
controlling and preparing the sample, and simulating the spatial relationship among faults, underground engineering and surrounding rocks;
controlling at least one strain detection unit to acquire internal strain information of the sample, wherein the strain detection units are arranged on a strain section of the sample in a layered manner;
controlling the acoustic emission unit to acquire acoustic emission evolution characteristics of the test sample, wherein the acoustic emission unit is connected with the test sample;
controlling the joint meter to acquire dislocation displacement information of a fault in the sample, wherein the joint meter is arranged on a joint section of the sample;
and controlling the load applying unit to apply load to the sample, wherein the load applying unit is connected with the sample.
Optionally, the controlling prepares the sample, including:
determining size information of the sample by a testing machine;
acquiring position and size information of the fault and the underground engineering;
acquiring component information of the surrounding rock and the fault;
pouring the surrounding rock based on the size information of the sample, the component information of the surrounding rock, the position and the size information of the fault and the underground engineering;
and pouring the fault according to the component information of the fault and the position and size information of the fault.
Optionally, the load includes a static load and a dynamic load, 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.
In a third aspect, the present invention also provides an apparatus for modeling the effect of fault activation on subsurface surrounding rock stability, a method for modeling the effect of fault activation on subsurface surrounding rock stability as described in any one of the second aspects above, comprising:
the first control module is used for controlling the preparation of the sample and simulating the spatial relationship among faults, underground engineering and surrounding rocks;
the second control module is used for controlling at least one strain detection unit to acquire internal strain information of the sample, and the strain detection units are arranged on a strain section of the sample in a layered manner;
the third control module is used for controlling the acoustic emission unit to acquire acoustic emission evolution characteristics of the test sample, and the acoustic emission unit is connected with the test sample;
the fourth control module is used for controlling the joint meter to acquire dislocation displacement information of a fault in the sample, and the joint meter is arranged on a joint section of the sample;
and a fifth control module for controlling the load applying unit to apply load to the sample, wherein the load applying unit is connected with the sample.
In a fourth aspect, the present invention also provides an electronic device comprising a memory, a processor for implementing the steps of the method of simulating the effect of fault activation on subsurface surrounding rock stability as described in any of the second aspects above, when executing a computer program stored in the memory.
In a fifth aspect, the present invention also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of a method of simulating the effect of fault activation on subsurface surrounding rock stability as described in any of the second aspects above.
According to the technical scheme, the invention provides a system for simulating the influence of fault activation on the stability of underground surrounding rock, which comprises the following steps: the sample is used for simulating the spatial relationship among faults, underground engineering and surrounding rocks; the strain detection unit is used for acquiring internal strain information of the sample and is arranged on a strain section of the sample in a layered manner; the acoustic emission unit is used for acquiring acoustic emission evolution characteristics of the test sample and is connected with the test sample; the joint meter is used for acquiring dislocation displacement information of a fault in the sample and is arranged on a joint section of the sample; and the load applying unit is used for applying load to the sample and is connected with the sample. In the research process of the influence of fault activation on the stability of underground surrounding rock, information such as fault activation deformation, fault upper and lower disc deformation conditions, and tunnel surrounding rock deformation conditions needs to be monitored. However, the current model test method can only simulate a fault tunnel or tunnel, but cannot simulate a structure with a fault approximately parallel to the axis of a cavity, so that the research on the influence of fault activation on the stability of underground surrounding rock is inconvenient. The embodiment of the application monitors through the strain detection unit and the sound emission unit, improves the integrity and accuracy of monitoring results, and monitors fault dislocation conditions through the arrangement of the seam meter. Thus, the information availability of the simulation test system can be improved, the internal structure of the sample can be adjusted based on the research requirement, and the practicability of the system is improved.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic block diagram of a system for modeling the impact of fault activation on subsurface surrounding rock stability provided by an embodiment of the present application;
FIG. 2 is a schematic block diagram of a fault-to-subsurface-rock spatial relationship of a system for modeling the effect of fault activation on subsurface-rock stability provided in an embodiment of the present application;
FIG. 3 is a schematic block diagram of a fault-to-subsurface-rock spatial relationship of a system for modeling the effect of fault activation on subsurface-rock stability provided in an embodiment of the present application;
FIG. 4 is a schematic block diagram of a fault-to-subsurface-rock spatial relationship of a system for modeling the effect of fault activation on subsurface-rock stability provided in an embodiment of the present application;
FIG. 5 is a schematic block diagram of a fault-to-subsurface-rock spatial relationship of a system for modeling the effect of fault activation on subsurface-rock stability provided in an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a system for simulating the influence of fault activation on stability of underground surrounding rock, in which a strain detection unit is arranged on a strain section in the spatial relationship shown in FIG. 2 according to an embodiment of the present application;
FIG. 7 is a schematic block diagram of a system for simulating the effect of fault activation on subsurface surrounding rock stability provided in an embodiment of the present application with a joint gauge disposed on a joint gauge face in a spatial relationship as shown in FIG. 2;
FIG. 8 is a schematic block diagram of a strain detection unit of the system for simulating the effect of fault activation on subsurface surrounding rock stability provided in an embodiment of the present application in the spatial relationship shown in FIG. 2;
FIG. 9 is a schematic block diagram of the distribution of strain sections and fracture sections in a sample in the spatial relationship shown in FIG. 2 for a system for modeling the impact of fault activation on subsurface surrounding rock stability provided in an embodiment of the present application;
FIG. 10 is a schematic flow chart of a method of modeling the impact of fault activation on subsurface surrounding rock stability provided by an embodiment of the present application;
FIG. 11 is a schematic block diagram of an apparatus for modeling the effect of fault activation on subsurface surrounding rock stability provided in an embodiment of the present application;
fig. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the examples below do not represent all embodiments consistent with the present application. Merely as 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 apparatus and method may be implemented in other manners, and the apparatus embodiments described below are merely exemplary.
As shown in fig. 1, an embodiment of the present application provides a system 100 for modeling the effect of fault activation on subsurface surrounding rock stability, comprising:
at least one strain detection unit 111 for acquiring internal strain information of the sample, the strain detection unit being layered on a strain section of the sample;
an acoustic emission unit 120 for acquiring acoustic emission evolution characteristics of the test sample, the acoustic emission unit being connected to the test sample;
a slit meter 112 for acquiring dislocation displacement information of the fault in the sample, the slit meter being provided in a slit cross section of the sample;
and a load applying unit 130 for applying a load to the sample, the load applying unit being connected to the sample.
The size information of the sample can be determined by the model of the testing machine, and the position relationship and the size information of the underground engineering, the fault and the underground surrounding rock in the sample can be determined based on the similarity theory and the sample size according to the research requirements. As shown in fig. 2 to 5, fig. 2 to 5 are schematic structural diagrams of a fault-to-underground surrounding rock spatial relationship of a system for simulating the effect of fault activation on underground surrounding rock stability, comprising: samples, underground works, faults, and underground surrounding rock. The samples may be prepared based on the spatial relationship in fig. 2 to 5 and the size information of the samples. In the sample pouring process, the shape, position and size of the fault can be controlled by controlling the distance and surface curvature between the isolating materials through the isolating materials with certain height and determinable thickness.
For example, the strain detecting units may be arranged in layers based on the research requirement, and the detection results and detection time points of the strain detecting units may be recorded, and the strain detecting units may be arranged around underground works and faults, and the number of strain detecting units per layer should not exceed three. The material composition of the strain detection unit may be the same as the sample. Fig. 6 is a schematic structural diagram of a strain detection unit disposed on a strain section in a system for simulating an influence of fault activation on stability of underground surrounding rock according to an embodiment of the present application in a spatial relationship shown in fig. 2, where in a spatial relationship in a sample shown in fig. 2, the spatial relationship in the strain section of the strain detection unit is shown in fig. 6, and includes: a sample 600, an underground works 610, a fault 620, an underground surrounding rock 630, and three strain detection units 601.
The acoustic emission unit may be disposed on the surface of the sample, and under the condition that the surrounding rock deforms, obtain ultrasonic information radiated due to frictional sliding of the inner fracture surface, so as to continuously observe dynamic evolution of micro fracture inside the rock material, record detection results of the acoustic emission unit, and further study microscopic mechanisms of rock deformation and destruction according to the detection results. . The recorded detection results of the strain detection unit and the detection results recorded by the sound emission unit may be compared, a unit difference interval may be set, and whether a fault condition exists or not may be determined based on the comparison result of the unit difference interval and the two detection results. And under the condition that the comparison result is in the unit difference section, the strain detection unit and the acoustic emission unit can be determined to be in a normal working state, under the condition that the comparison result is no longer in the unit difference section, the strain detection unit and the acoustic emission unit can be determined to have fault conditions, and the fault time point can be recorded and an alarm message can be sent.
For example, the meter may be arranged perpendicular to the fault in the section of the seam, placed on the fault at the uppermost end of the disc near the sample boundary. Fig. 7 is a schematic structural diagram of a system for simulating an influence of fault activation on stability of underground surrounding rock according to an embodiment of the present application, where a seam meter is disposed on a seam meter surface in a spatial relationship shown in fig. 2, and in a spatial relationship in a sample interior shown in fig. 2, a spatial relationship in a seam section of the seam meter is shown in fig. 7, and includes: sample 700, underground works 710, faults 720, underground surrounding rock 730, and joint meter 702. Wherein the meter 702 is perpendicular to the axis of the upper fault section of the seam section.
For example, the disturbance load of the load applying unit can be set based on the research requirement, and the disturbance load is applied to the sample through the load applying unit to perform fault activation simulation.
Through setting up the detection unit that strains and sound emission unit and carrying out collaborative detection, improve the integrality and the accuracy of testing result, set up the detection unit that strains through the layering, can avoid arranging too much detection unit that strains on the same sample cross section, lead to the cross section weakness to increase, and then increase the fracture risk of cross section, influence the accuracy of test result. Through setting up the seam meter in order to monitor fault dislocation condition, can improve the information availability of simulation test system, can be based on research demand adjustment sample inner structure, apply the disturbance load through the load and exert the unit, simulate fault activation, improve the practicality of system.
According to some embodiments, the strain detection unit includes:
the two strain bricks are used for acquiring strain information of the positions of the strain bricks;
the fixing plate is used for fixing the strain bricks, wherein two strain bricks are fixed on the cross section of one side defined by the long side and the wide side of the fixing plate, and the outer side edges of the two strain bricks are respectively aligned with the wide side of the fixing plate;
and the fixing pile is used for fixing the fixing plate, wherein the fixing pile is vertically fixed on 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 are overlapped.
The strain brick may be a cube, and the side length may be 1/20 to 1/15 times the size of the sample. The length of the long side of the fixed plate can be 3-4 times of 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 1/2-1 time of the side length of the strain brick. 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 2-3 times of the side length of the strain brick. The strain brick may be provided with a strain-collecting channel by means of strain gauges on the strain gauge, which may comprise at least one strain gauge. At least one strain relief may be provided in parallel along three sides of a corner on a strain block, wherein the strain relief is required to be parallel to two of the three sides at the same time. The strain gauge connecting ends can be arranged on the surfaces of the strain bricks corresponding to the strain flowers, and each strain gauge can correspond to two connecting points on the strain gauge connecting ends. The connecting end of the strain gauge can be arranged at the vacant place on the surface of the strain brick to which the strain flower belongs and is parallel to one of two parallel edges of the strain flower. The strain gauge may be connected to the strain gauge connecting end by a connecting wire, and when different strain gauges of the same strain gauge are connected to the strain gauge connecting end, connecting wires of different colors may be used, and the connecting wires connected to the same strain gauge may be bound and numbered, where the number information may include at least one of a strain section number, a strain detection unit number, a strain brick number, a strain gauge number, and a strain gauge number where the strain detection unit is located.
As shown in fig. 8, fig. 8 is a schematic structural diagram of a strain detection unit of the system for simulating the influence of fault activation on stability of underground surrounding rock according to the embodiment of the present application in the spatial relationship shown in fig. 2, where the system includes: two strain blocks 801, a fixing plate 802 and a fixing column 803. The strain block comprises three strain relief and three strain gage attachment ends, wherein each strain relief comprises a 0 ° strain gage, a 45 ° strain gage, and a 90 ° strain gage, and each strain gage attachment end is parallel to the 0 ° strain gage of the strain relief.
Through being connected the brick that strains with fixed plate and fixed pile, can improve the stability of strain detection unit in pouring the in-process, avoid strain detection unit to take place the testing result accuracy that the skew leads to low in pouring the in-process, and then can improve the practicality of system.
According to some embodiments, the slit section is a section where a center of the sample is located.
For example, in the case where the number of the slit cross sections is greater than one and odd, the slit meters may be provided at the cross section where the center of the specimen is located, and the rest of slit meters may be provided at symmetrical cross sections on both sides of the cross section where the center of the specimen is located. In the case where the number of slit cross sections is even, slit meters may be provided in symmetrical cross sections on both sides of the cross section where the center of the sample is located.
The section of the center of the sample is determined as the seam measuring section, so that the monitoring quality of the seam measuring instrument can be improved, the influence of the thickness of the sample on the result of the seam measuring instrument can be reduced as much as possible, the fault dislocation displacement monitored is prevented from being mismatched with the condition of load application, the test result is influenced, and the reliability of simulation and the practicability of the system can be improved.
According to some embodiments, in case of including a plurality of the above-mentioned strain sections, the above-mentioned strain sections are symmetrically arranged along both sides of the above-mentioned seam-measuring section.
For example, in the case where the number of strain sections is even, a group of two strain sections having the same number of strain detection units may be provided at the same distance from the slit section based on the number of strain sections and the number of strain detection units to be arranged in each strain section. Under the condition that the number of the strain sections is even and the number of the strain detection units is not equal, the strain sections with the closest number of the strain detection units can be set to be a group of two strain sections and are symmetrically arranged on two sides of the seam measurement section, and the distance between the two strain sections and the seam measurement section in the group is determined based on the number of the strain detection units. In the case where the number of strain sections is a technique, the strain sections may be arranged on both sides of the slit section on average based on the number of strain detection units in the strain sections.
As shown in fig. 9, taking a case that two strain sections are included in a sample as an example, fig. 9 is a schematic structural diagram of a distribution of strain sections and a fracture section in the sample in a spatial relationship shown in fig. 2 in a system for simulating an influence of fault activation on stability of underground surrounding rock according to an embodiment of the present application. Wherein 900 is a sample, 911 is a first strain section, 912 is a second strain section, 920 is a seam-measuring section, 930 is an underground engineering, the number of strain detection units in the first strain section 911 and the second strain section 912 is 3, and the distance between the seam-measuring sections of the first strain section 911 and the 920 is equal to the distance between the seam-measuring sections of the second strain section 912 and the 920.
Under the condition that a plurality of strain cross sections are included in the sample, the strain cross sections are symmetrically arranged on two sides of the seam measurement cross section, so that the stability of the strain cross sections can be improved, the occurrence of a weak surface is prevented, the larger deviation between the detection result of the strain detection unit on the weak surface and the actual situation is caused, the simulation effect is influenced, the problem that the practicability of the system is lower is caused, the accuracy and the stability of the system can be improved, and the applicability of the system is improved.
As shown in fig. 10, the embodiment of the present application further provides a method for simulating an influence of fault activation on stability of a subterranean surrounding rock, which is used in the system 1000 for simulating an influence of fault activation on stability of a subterranean surrounding rock, and fig. 10 is a schematic flowchart of the method for simulating an influence of fault activation on stability of a subterranean surrounding rock, which includes:
and S1010, controlling and preparing the sample, and simulating the spatial relationship among faults, underground engineering and surrounding rocks.
Step S1020, controlling at least one strain detection unit to obtain internal strain information of the sample, wherein the strain detection unit is layered on a strain section of the sample.
Step 1030, controlling the acoustic emission unit to acquire acoustic emission evolution characteristics of the test sample, wherein the acoustic emission unit is connected with the test sample.
Step S1040, controlling the slit meter to acquire dislocation displacement information of the fault in the sample, the slit meter being provided in a slit cross section of the sample.
Step S1050, controlling the load applying unit to apply load to the sample, wherein the load applying unit is connected with the sample.
According to the method, the sample can be prepared based on research requirements, the acoustic emission unit and the strain detection unit are adopted for collaborative detection, the integrity and the accuracy of a detection result are improved, and the strain detection unit is arranged in a layered mode, so that the stability of the inside of the sample is improved, the simulation result is more approximate to the actual state, and the accuracy of the test result can be improved. And a seam meter is arranged to monitor fault dislocation conditions, so that researchers can analyze the strain state around underground surrounding rock based on fault activation conditions, and the information availability of the system is improved. Disturbance load is applied through the load applying unit, fault activation can be simulated, and the practicability and convenience of the system are improved.
According to some embodiments, the controlling prepares the sample, comprising:
determining size information of the sample by a testing machine;
acquiring position and size information of the fault and the underground engineering, wherein the position and size information of the fault and the underground engineering is obtained by scaling the position and size information of the sample in an equal ratio;
acquiring the composition information of the surrounding rock and the fault;
pouring the surrounding rock based on the size information of the sample, the component information of the surrounding rock, the position and size information of the fault and the underground engineering;
pouring the fault according to the composition information of the fault and the position and size information of the fault.
For example, the dimensional information of the test sample may be determined based on the sample allowable size of the test machine and the research needs. The location and size information of faults and subsurface engineering in the sample may be determined based on similar principles and sample size. Casting material composition information for surrounding rock and faults may be determined based on research requirements, wherein the casting material composition information may be determined based on a similar principle based on the required stiffness of the test specimen. The fault and underground engineering mould can be manufactured through the fault and underground engineering position and size information, occupation can be carried out in the sample pouring process through the mould, and the strain detection unit is placed in the pouring process. After the pouring of the sample is finished, the die can be taken out, and the fault is poured based on the component information of the fault.
The sample pouring is performed based on the similar principle by the pouring method, so that the consistency of pouring effects can be ensured, the pouring steps are simplified, the pouring difficulty is reduced, and the practicability of the method is improved.
According to some embodiments, the load comprises a static load and a dynamic load, the load comprising 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 coincident with the direction of the maximum principal stress direction load.
For example, the three static loads may be applied at the same loading speed, and under the condition that the minimum main stress X-direction load reaches the corresponding set load, the minimum main stress X-direction load is kept unchanged, and the intermediate main stress Y-direction load and the maximum main stress direction load are continuously loaded. And under the condition that the load in the Y direction of the intermediate main stress reaches the corresponding set load, keeping the load in the Y direction of the intermediate main stress unchanged, and continuously loading the load in the Z direction of the maximum main stress. And when the maximum principal stress Z-direction load reaches the corresponding set load, starting to apply the power load to the corresponding set load in the maximum principal stress Z-direction under the condition that the maximum principal stress Z-direction load is kept to reach the corresponding set load.
For example, when the loading rate is 5kN/s, the set load corresponding to the minimum principal stress X direction is 8MPa, the set load corresponding to the intermediate principal stress Y direction is 10MPa, the set load corresponding to the maximum principal stress Z direction is 12MPa, the dynamic load in the maximum principal stress Z direction is a sinusoidal load, the amplitude is 0.4MPa, and the frequency is 1Hz. After the static load is applied, the whole surrounding rock keeps stable, fault dislocation displacement is not obvious, but after the dynamic load is applied, the detection results of the acoustic emission unit and the strain detection unit are changed, and along with the continuous application of the dynamic load, the ringing number and energy of the acoustic emission unit start to suddenly increase, the strain around the fault suddenly increases, even reverse strain starts to appear, the fault starts to dislocation, the dislocation speed is suddenly increased from a low speed, and after the dislocation displacement reaches a certain distance, the whole sample collapses.
The stress distribution condition in the sample can be changed through the application of the static load, so that the stress distribution condition in the sample meets the research requirement, and the authenticity and the effectiveness of fault activation simulation are improved. Under the condition that the application of the static load reaches the stress environment of research requirements, the static load or the dynamic load can be further applied, so that the fault is activated, the influence effect of the fault activation on the stability of underground surrounding rock is conveniently obtained, and the accuracy and the practicability of the model test method can be further improved.
As shown in fig. 11, fig. 11 is a schematic structural diagram of an apparatus for simulating the effect of fault activation on subsurface surrounding rock stability provided in an embodiment of the present application.
Embodiments of the present application provide an apparatus 1100 for modeling fault activation effects on subsurface surrounding rock stability, the apparatus comprising:
a first control module 1101 for controlling the preparation of the above-mentioned samples, simulating the spatial relationship of faults, underground works and surrounding rocks;
a second control module 1102, configured to control at least one strain detection unit to obtain internal strain information of the sample, where the strain detection units are layered on a strain section of the sample;
a third control module 1103, configured to control the acoustic emission unit to obtain an acoustic emission evolution characteristic of the sample, where the acoustic emission unit is connected to the sample;
a fourth control module 1104 for controlling the slit meter to acquire dislocation displacement information of the fault in the sample, the slit meter being provided in a slit cross section of the sample;
a fifth control module 1105 for controlling the load applying unit to apply a load to the sample, the load applying unit being connected to the sample.
The apparatus 1100 for simulating the effect of fault activation on subsurface surrounding rock stability is capable of implementing various processes implemented in the method embodiment of fig. 10, and is not described herein in detail to avoid repetition.
As shown in fig. 12, fig. 12 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.
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, wherein the processor 1220 implements the following steps when executing the computer program 1211:
controlling and preparing the sample, and simulating the spatial relationship among faults, underground engineering and surrounding rocks;
controlling at least one strain detection unit to acquire internal strain information of the sample, wherein the strain detection unit is arranged on a strain section of the sample in a layering manner;
controlling the acoustic emission unit to acquire acoustic emission evolution characteristics of the test sample, wherein the acoustic emission unit is connected with the test sample;
controlling the joint meter to acquire dislocation displacement information of a fault in the sample, wherein the joint meter is arranged on a joint section of the sample;
and controlling the load applying unit to apply a load to the sample, wherein the load applying unit is connected with the sample.
In a specific implementation, when the processor 1220 executes the computer program 1211, any implementation of the embodiment corresponding to fig. 10 may be implemented.
Since the electronic device described in this embodiment is a device for implementing an apparatus in this embodiment, based on the method described in this embodiment, those skilled in the art can understand the specific implementation of the electronic device in this embodiment and various modifications thereof, so how to implement the method in this embodiment for this electronic device will not be described in detail herein, and as long as those skilled in the art implement the device for implementing the method in this embodiment for this application, all fall within the scope of protection intended by this application.
As shown in fig. 13, fig. 13 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present application.
The present embodiment provides a computer readable storage medium 1300 having stored thereon a computer program 1311, which computer program 1311 when executed by a processor performs the steps of:
controlling and preparing the sample, and simulating the spatial relationship among faults, underground engineering and surrounding rocks;
controlling at least one strain detection unit to acquire internal strain information of the sample, wherein the strain detection unit is arranged on a strain section of the sample in a layering manner;
controlling the acoustic emission unit to acquire acoustic emission evolution characteristics of the test sample, wherein the acoustic emission unit is connected with the test sample;
controlling the joint meter to acquire dislocation displacement information of a fault in the sample, wherein the joint meter is arranged on a joint section of the sample;
and controlling the load applying unit to apply a load to the sample, wherein the load applying unit is connected with the sample.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Embodiments of the present application also provide a computer program product comprising computer software instructions that, when run on a processing device, cause the processing device to perform a flow in a method of simulating an effect of fault activation on subsurface surrounding rock stability as in the corresponding embodiment of fig. 10.
The computer program product described above includes one or more computer instructions. When the above-described computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The 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, from one website, computer, server, or data center by wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the above-described division of units is merely a logical function division, and there may be another division manner in actual implementation, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of 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.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the above-described method of the various embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In summary, the above embodiments are only for illustrating the technical solution of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A system for modeling the effect of fault activation on subsurface surrounding rock stability, comprising:
the sample is used for simulating the spatial relationship among faults, underground engineering and surrounding rocks;
the strain detection unit is used for acquiring internal strain information of the sample and is arranged on a strain section of the sample in a layered manner;
the acoustic emission unit is used for acquiring acoustic emission evolution characteristics of the test sample and is connected with the test sample;
the joint meter is used for acquiring dislocation displacement information of a fault in the sample and is arranged on a joint section of the sample;
and the load applying unit is used for applying load to the sample and is connected with the sample.
2. The system for modeling fault activation impact on subsurface surrounding rock stability as claimed in claim 1, wherein said strain detection unit comprises:
the two strain bricks are used for acquiring strain information of the positions of the strain bricks;
the fixing plate is used for fixing the strain bricks, wherein two strain bricks are fixed on the cross section of one side defined by the long side and the wide side of the fixing plate, and the outer side edges of the two strain bricks are respectively aligned with the wide side of the fixing plate;
and the fixing piles are used for fixing the fixing plates, wherein the fixing piles are vertically fixed on the cross section of the other side of the fixing plates, and the geometric centers of the fixing piles and the two fixing surfaces of the strain bricks are coincident.
3. The system for modeling fault activation as defined in claim 1, wherein the fracture cross section is the cross section of the sample center.
4. The system for modeling fault activation as claimed in claim 1, wherein in the case of including a plurality of said strained sections, said strained sections are symmetrically disposed along both sides of said fracture section.
5. A method of modeling the effect of fault activation on subsurface surrounding rock stability, for use in a system for modeling the effect of fault activation on subsurface surrounding rock stability as claimed in claim 1, comprising:
controlling and preparing the sample, and simulating the spatial relationship among faults, underground engineering and surrounding rocks;
controlling at least one strain detection unit to acquire internal strain information of the sample, wherein the strain detection units are arranged on a strain section of the sample in a layered manner;
controlling the acoustic emission unit to acquire acoustic emission evolution characteristics of the test sample, wherein the acoustic emission unit is connected with the test sample;
controlling the joint meter to acquire dislocation displacement information of a fault in the sample, wherein the joint meter is arranged on a joint section of the sample;
and controlling the load applying unit to apply load to the sample, wherein the load applying unit is connected with the sample.
6. The method of claim 5, wherein said controlling preparing said sample comprises:
determining size information of the sample by a testing machine;
acquiring position and size information of the fault and the underground engineering, wherein the position and size information of the fault and the underground engineering is obtained by scaling the position and size information of the fault and the underground engineering in an equal ratio according to the size information of the sample;
acquiring component information of the surrounding rock and the fault;
pouring the surrounding rock based on the size information of the sample, the component information of the surrounding rock, the position and the size information of the fault and the underground engineering;
and pouring the fault according to the component information of the fault and the position and size information of the fault.
7. The method of claim 5, wherein the load comprises a static load and a dynamic load, the load comprising a minimum principal stress direction load, an intermediate principal stress direction load, and a maximum principal stress direction load, wherein the dynamic load has a direction that coincides with the direction of the maximum principal stress direction load.
8. An apparatus for modeling the effect of fault activation on subsurface surrounding rock stability, for use in a system for modeling the effect of fault activation on subsurface surrounding rock stability as claimed in claim 1, comprising:
the first control module is used for controlling the preparation of the sample and simulating the spatial relationship among faults, underground engineering and surrounding rocks;
the second control module is used for controlling at least one strain detection unit to acquire internal strain information of the sample, and the strain detection units are arranged on a strain section of the sample in a layered manner;
the third control module is used for controlling the acoustic emission unit to acquire acoustic emission evolution characteristics of the test sample, and the acoustic emission unit is connected with the test sample;
the fourth control module is used for controlling the joint meter to acquire dislocation displacement information of a fault in the sample, and the joint meter is arranged on a joint section of the sample;
and a fifth control module for controlling the load applying unit to apply load to the sample, wherein the load applying unit is connected with the sample.
9. An electronic device comprising a memory, a processor, wherein the processor is configured to implement the steps of the method of simulating the effect of fault activation on subsurface surrounding rock stability of any one of claims 5 to 7 when executing a computer program stored in the memory.
10. A computer-readable storage medium having stored thereon a computer program, characterized by: the computer program, when executed by a processor, implements the steps of the method of simulating the effect of fault activation on subsurface rock stability as claimed in any one of claims 5 to 7.
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| CN202211104594.1A CN116148435A (en) | 2022-09-09 | 2022-09-09 | Method for simulating influence of fault activation on stability of underground surrounding rock and related equipment |
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| CN202211104594.1A CN116148435A (en) | 2022-09-09 | 2022-09-09 | Method for simulating influence of fault activation on stability of underground surrounding rock and related equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589965A (en) * | 2023-11-22 | 2024-02-23 | 天津大学 | Experimental device and method for simulating disturbance of engineering excavation on fault stability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589965A (en) * | 2023-11-22 | 2024-02-23 | 天津大学 | Experimental device and method for simulating disturbance of engineering excavation on fault stability |
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