True Triaxial High Temperature and High Pressure Creep-Impact Mechanical Test System for Deep Surrounding Rock Anchor Solids

Abstract

The present invention belongs to the technical field of geotechnical engineering safety protection, and provides a true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchor solids, comprising: an axial impact loading system, which can apply axial impact loads with different strain rates to the anchor solids and can be coupled with the triaxial confining pressure loading system; a high-temperature environment simulation system, which can construct a high-temperature occurrence environment under complex loading conditions so as to test the physical and mechanical properties of the anchor solids under the condition of force-heat coupling; a lateral shear loading system, which applies lateral shear loads to the anchor solids; the present invention realizes the accurate test and analysis of the physical and mechanical properties of full-scale bolt-anchor solids under complex environments such as high geothermal temperature and three-dimensional in-situ stress, as well as under combined loading conditions such as tension, shear, creep, pulse, and multi-strain impact.

Description

Technical Field

[0001] The present invention relates to the field of physical and mechanical tests in civil engineering, and particularly to a true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchor solids. Background Technique

[0002] The statements in this part only provide the background technique related to the present invention and do not necessarily constitute the prior art.

[0003] Currently, the main support methods for the foundations of high-rise buildings and the surrounding rocks of underground projects are bolt support. A bolt is a rod used to reinforce rock or soil, usually made of steel bars. During engineering construction, it is buried or drilled into the rock and soil mass, and the bolt is cemented with the rock and soil mass into one body through an anchoring agent. Its supporting effect is called the anchoring effect, which can increase the bearing capacity and stability of the rock and soil mass, thereby improving the service life of the building and ensuring the safety and stability of engineering construction and long-term operation. An anchor solid refers to a coupled support structure formed by the combination of a bolt and concrete. The bolt is wrapped in the concrete to enhance the connection between the concrete and the bolt, so that the two work together to bear various stresses (such as pressure, tension, bending moment, torque, etc.), and transfer the force to the stable stratum through frictional resistance or bearing resistance, making the support more firm.

[0004] In summary, the anchor solid is the core support component to ensure the safe construction and stable operation of various projects. At the same time, with the increasing complexity of various engineering constructions, such as deep underground projects and special engineering buildings facing complex environments such as high temperature and seismic impact disturbances, new requirements are also put forward for the support characteristics of the anchor solid.

[0005] To verify the applicability and reliability of the support performance of the anchor solid, it is necessary to systematically test the physical and mechanical properties and dynamic response characteristics of full-scale anchor solids. Indoor tests have the advantages of quantitative parameters, repeatable processes, and data collection, and are the most convenient and reliable means to carry out research on the physical and mechanical properties and dynamic response characteristics of anchor solids. An ideal anchor solid test system needs to comprehensively consider complex environments such as high geothermal temperature and three-dimensional ground stress, as well as combined stress conditions such as tension, shear, creep, pulse, and impact of the anchor solid, so as to realize the study of the mechanical properties of full-scale high-temperature and high-pressure anchor solid surrounding rocks.

[0006] Therefore, various anchor solid test systems with their own characteristics have been developed at present. For example:

[0007] Chinese Patent CN112880958A invented a test method and test bench for the axial impact resistance performance of an anchor solid, which can lift a specified weight impact piece to a specified height according to the target impact energy and make it fall freely, so as to impact the lower end of the anchor solid downward, and can obtain the impact force and impact displacement data and curves of the impact piece and the anchor solid, and systematically study the impact resistance mechanical properties of the underground anchoring structure;

[0008] Chinese Patent CN111929020A invented a method and system for testing the impact resistance performance of an underground engineering anchorage system. This system can apply impact loads to the anchor body using a drop hammer impact test device. The test system has a simple structure and is easy to operate, and can accurately and effectively reflect the impact resistance performance of bolts or cables, anchor bodies, and bolts or cables within the anchor body in underground engineering;

[0009] Chinese Patent CN111811850B invented a device and method for testing the collaborative bearing performance of a bolt-cable system. During the test, a traction system is used to synchronously stretch the bolt and cable, so as to evaluate the collaborative bearing performance of the bolt-cable according to the failure position, sequence, mode, stress, and deformation characteristics of the bolt-cable anchorage system, achieving the purpose of testing the collaborative bearing performance of bolts and cables. The test process is highly similar to the on-site environment;

[0010] Chinese Patent CN111141596B invented a device and method for testing the mechanical properties of an anchor body under impact loads. This test device includes a through-hole pneumatic jack device and a pressure regulating device. A static load is applied to the bolt or anchor body through the jack, and an impact load is applied to the bolt or anchor body by driving with high-pressure gas, and the magnitude of the impact load can be controlled by adjusting the air pressure;

[0011] In summary, the existing bolt or anchor body test systems have their own characteristics and mainly innovate in the application of impact loads. However, their main limitations are as follows:

[0012] (1) The type of load application is limited, and only a pure static load or a combined static load and drop hammer impact load can be applied to the bolt or anchor body;

[0013] (2) The impact strain rate range is small, and only medium and low strain rate impact loads can be applied to the bolt or anchor body through a drop hammer or pendulum hammer. In actual on-site situations, there are various strain rate impacts and pulse dynamic loads, including low, medium, and high strain rates;

[0014] (3) It is impossible to simulate a high-temperature environment. Only static loads or impact loads can be applied to the bolt or anchor body at room temperature, and it cannot meet the mechanical property test requirements for high-temperature or special high-temperature working conditions;

[0015] (4) The size of the anchor body that can be loaded is small, and only a scaled-down loading test can be carried out, resulting in a deviation between the physical and mechanical properties of the obtained anchor body and the engineering site. Summary of the Invention

[0016] To solve the deficiencies of the prior art, the present invention provides a true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchor solids, which can apply various combined loads such as tension, shear, creep, pulse, and multi-strain rate impact to the anchor bolt or anchor solid in a high-temperature environment, so as to deeply study the physical and mechanical properties of the anchor bolt or anchor solid under high geothermal temperature and complex stress conditions, and better guide the selection of anchor bolts and the design of engineering support.

[0017] To achieve the above object, the present invention adopts the following technical solutions:

[0018] In the first aspect, the present invention provides a true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchor solids.

[0019] A true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchor solids includes at least:

[0020] A main reaction force frame for forming a test space and providing a reaction force for creep-impact load loading;

[0021] A triaxial confining pressure loading system arranged on the side of the main reaction force frame for applying true triaxial static loads to the anchor bolt-anchor solid through hydraulic pressure;

[0022] An axial tension and pull loading system arranged on the top of the main reaction force frame for applying axial tension and pull loads to the anchor or anchor solid through the cooperation of a servo motor and a lead screw;

[0023] A transverse shear loading system arranged on the side of the main reaction force frame, taking the triaxial confining pressure loading system as the loading power, and cooperating with a shear loading member to apply transverse shear loads to the anchor bolt-anchor solid;

[0024] A triaxial pulse loading system for providing high-frequency pulsed hydraulic pressure for the triaxial confining pressure loading system and the transverse shear loading system to apply triaxial medium and low strain rate pulsed dynamic loads to the anchor bolt-anchor solid;

[0025] An axial impact loading system arranged on the top of the main reaction force frame for applying multi-strain rate axial impact loads to the anchor bolt-anchor solid;

[0026] A lateral pendulum impact system arranged on the side of the main reaction force frame for applying low or medium strain rate lateral impact loads to the anchor bolt-anchor solid through a pendulum mechanism;

[0027] A high-temperature environment simulation system arranged at the middle position of the main reaction force frame for constructing a high-temperature occurrence environment for the anchor bolt-anchor solid.

[0028] As a further limitation of the first aspect of the present invention, the test system further includes a servo intelligent measurement and control system, which includes: a three-axis high-frequency response force sensor, a transient hydraulic sensor, and a transient flow sensor, and is used to monitor the transient impact load generated by the axial impact loading system and the transient deformation of the bolt-anchored body;

[0029] The servo intelligent measurement and control system is coupled to control the three-axis confining pressure loading system, the axial tension loading system, the axial tension loading system, the lateral shear loading system, the three-axis pulse loading system, the axial impact loading system, the lateral pendulum impact system, and the high-temperature environment simulation system to achieve high-precision programmed control of the entire test process;

[0030] The servo intelligent measurement and control system can monitor the shear stiffness of the anchored body in real time, and perform separate and combined displays of tension, shear, creep, pulse, and multi-strain rate impacts, and can set the load combination mode.

[0031] As a further limitation of the first aspect of the present invention, the three-axis confining pressure loading system includes: a lateral loading device, a side loading device, a lateral load sensor, a foldable sliding track, and a sliding lifting device;

[0032] The lateral loading device is two sets of electro-hydraulic servo loading devices arranged at the lateral ends of the bolt-anchored body to apply lateral pressure to the bolt-anchored body; the side loading device is an oil cylinder installed on the side of the main reaction frame, and the piston of the oil cylinder passes through the main reaction frame to apply lateral pressure to the bolt-anchored body laterally; the three-axis confining pressure is applied to the bolt-anchored body through the lateral loading device and the side loading device together;

[0033] The lateral load sensor is installed between the lateral loading device, the side loading device and the bolt-anchored body to monitor the three-axis confining pressure in real time;

[0034] One side of the lateral loading device is installed on the foldable sliding track, and the lateral loading device is folded under the non-three-axis confining pressure loading state; the other side of the lateral loading device is equipped with the sliding lifting device, and the other side of the lateral loading device is vertically lifted through the sliding lifting lead screw, the sliding lifting guide rail and the sliding lifting synchronous power device.

[0035] As a further limitation of the first aspect of the present invention, the axial tension loading system includes: a load-bearing lead screw, a servo motor, a belt transmission mechanism, a tension connection member, and an axial load sensor;

[0036] The load-bearing lead screw passes through the top of the main body reaction frame. The servo motor and the belt transmission mechanism are located at the top of the main body reaction frame. The drawing connection member is located at the top of the internal space of the main body reaction frame. A variety of expansion connection holes with different sizes and shapes are arranged on the drawing connection member to install different types of mechanical test fixtures. The axial load sensor is located at the bottom of the internal space of the main body reaction frame.

[0037] The servo motor drives the belt transmission mechanism to rotate. The belt transmission mechanism drives the load-bearing lead screw to rotate and lift relative to the main body reaction frame, driving the drawing connection member to lift and lower, applying an axial drawing load to the bolt-anchored body. The axial load sensor monitors the axial drawing load borne by the bolt-anchored body in real time and feeds the data back to the servo intelligent measurement and control system.

[0038] As a further limitation of the first aspect of the present invention, the lateral shear loading system is an accessory system of the triaxial confining pressure loading system, including: a shear loading member and a shear loading reaction fixing device;

[0039] The shear loading member is installed between the lateral loading device and the bolt-anchored body to apply a lateral shear load to the anchoring end. The shear loading reaction fixing device is fixed to the main body reaction frame through a pin.

[0040] The lateral shear loading system cooperates with the servo intelligent measurement and control system to perform non-constant load loading or constant stiffness control loading. The lateral shear loading system cooperates with the triaxial pulse loading system to apply a lateral pulse vibration shear load to the bolt-anchored body.

[0041] As a further limitation of the first aspect of the present invention, the axial impact loading system includes a drop hammer automatic lifting device, a light gas gun high-speed impact device, an impact force liquid transmission device and a hydraulic pipeline. The impact force liquid transmission device is a double oil cylinder structure and is connected through the hydraulic pipeline. The bolt end extends upward through the impact force liquid transmission device;

[0042] The drop hammer automatic lifting device lifts a drop hammer with a specified weight to a specified height and then freely falls. The generated impact energy with a specified value acts on the impact force liquid transmission device and is quickly transmitted through the hydraulic pipeline, and finally acts on the bolt end, generating a medium strain rate impact load on the bolt end;

[0043] The axial impact loading system is located on the side of the axial pulling loading system and can apply pulling load and impact load to the end of the bolt simultaneously. The drop hammer automatic lifting device and the light gas gun high-speed impact device are interchangeable. The light gas gun high-speed impact device is the power device of the split Hopkinson pressure bar and can generate high strain rate impact load.

[0044] As a further limitation of the first aspect of the present invention, the lateral pendulum impact system includes: a pendulum rotating shaft, a pendulum, a pendulum lifting device and a protective device. The pendulum is rotated and lifted along the pendulum rotating shaft by the pendulum lifting device, and then the pendulum is released. The pendulum freely falls to apply a lateral impact load to the anchoring end. The protective device is installed on both the front and back sides of the pendulum. The lateral pendulum impact system and the triaxial confining pressure loading system can be loaded simultaneously.

[0045] As a further limitation of the first aspect of the present invention, the high-temperature environment simulation system includes: a hot runner servo heating device, a hot runner and a heat insulation and preservation box. The servo heating device is fixed on the inner surface of the fixed box. A groove is opened on the inner surface of the servo heating device, and the hot runner is installed in the groove in an embedded manner. The hot runner is in direct contact with the anchor body. The outer shell of the heat insulation and preservation box is a three-layer structure, forming two heat insulation spaces, namely vacuum heat insulation and aerogel heat insulation. The heat insulation and preservation box is arranged on the foldable sliding track.

[0046] In the second aspect, the present invention provides a true triaxial high-temperature high-pressure creep-impact mechanical test method for deep surrounding rock anchor bodies.

[0047] A true triaxial high-temperature high-pressure creep-impact mechanical test method for deep surrounding rock anchor bodies, using the true triaxial high-temperature high-pressure creep-impact mechanical test system described in the first aspect of the present invention, includes the following processes:

[0048] Start the servo intelligent measurement and control system to make the functions of the system meet the test requirements. Slide the lateral loading device to one side of the main body reaction frame through the foldable sliding track to make room for the installation of the bolt-anchor body. Install the hot runner servo heating device and the hot runner in the solid box. Place the bolt end of the bolt-anchor body upward and the anchoring end downward, and install them in the fixed box. The bolt end is relatively fixed to the pulling connection member of the axial pulling loading system;

[0049] Use the heat insulation and preservation box of the high-temperature environment simulation system to tightly wrap the fixed box, the hot runner servo heating device, the hot runner and the anchoring end to isolate the internal temperature from the external devices. Use the hot runner servo heating device and the hot runner of the high-temperature environment simulation system to quantitatively heat the anchoring end of the bolt-anchor body, and control the temperature of the anchor body to simulate various temperature conditions;

[0050] Move the collapsible sliding track with the lateral loading device to the side of the main reaction frame and lock it. Use the triaxial confining pressure loading system in cooperation with the triaxial pulse loading system to apply triaxial confining pressure to the bolt-anchored body. The lateral loading device is used to apply bidirectional lateral loads parallel to the bearing side beam of the main reaction frame, and the lateral loading device is used to apply a unidirectional lateral load perpendicular to the bearing side beam of the main reaction frame to simulate the three-dimensional in-situ stress occurrence state in underground engineering. During the triaxial loading process, the triaxial load is monitored in real time through a lateral load sensor.

[0051] When applying the triaxial pulse confining pressure load, start the triaxial pulse loading system. Provide high-precision dynamic pulse oil pressure for the triaxial confining pressure loading system through a high-flow dynamic hydraulic loading device and a high-frequency hydraulic control device, and then load the pulse load onto the bolt-anchored body to simulate the pulse disturbance load at the engineering site.

[0052] When loading the triaxial shear load, arrange a shear loading device between the triaxial confining pressure loading system and the heat insulation and preservation box body, convert the pressure generated by the triaxial confining pressure loading system into a lateral shear force, and fix the triaxial confining pressure loading system to the main reaction frame through a shear loading reaction fixing device.

[0053] When loading the axial tensile load, the pulling connection member is relatively fixed to the bolt end. Drive the belt transmission mechanism to rotate through a servo motor. The belt transmission mechanism has the function of reducing speed and increasing torque. Then the belt transmission mechanism drives the bearing lead screw to rotate and lift relative to the main reaction frame, and finally drives the pulling connection member to lift and lower to apply an axial tensile load to the bolt-anchored body. The axial load sensor monitors the axial tensile load borne by the bolt-anchored body in real time.

[0054] When applying the axial impact load, first lift a specified weight drop hammer to a specified height through a drop hammer automatic lifting device, and then let it fall freely. The generated specified impact energy acts on the impact force liquid transmission device and is quickly transmitted through a hydraulic pipeline, and finally acts on the bolt end to generate a medium strain rate impact load on the bolt end. The drop hammer automatic lifting device and the light gas gun high-speed impact device are mutually replaceable. The light gas gun high-speed impact device is the power device of the split Hopkinson pressure bar and can generate a high strain rate impact load to expand the strain rate loading range of the axial impact load.

[0055] When applying the lateral impact load, lift the pendulum along the pendulum rotation axis through a pendulum lifting device, and then release the pendulum. The pendulum falls freely to apply a lateral impact load to the anchoring end. The lateral pendulum impact system can be loaded simultaneously with the triaxial confining pressure loading system, so as to apply a static and dynamic superimposed load to the anchored body.

[0056] As a further limitation of the second aspect of the present invention, the servo intelligent measurement and control system is used to couple and integrate functions including high-temperature environment construction, triaxial confining pressure loading, three-dimensional pulse loading, triaxial shear, axial tension, axial impact, and lateral impact tests, so as to accurately test the mechanical properties of the surrounding rock of full-scale high-temperature and high-pressure anchor solids.

[0057] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0058] 1. Through the triaxial confining pressure loading system, axial tension loading system, lateral shear loading system, and triaxial pulse loading system of the present invention, a variety of types of load combinations such as tension, compression, shear, and pulse in the three axial directions are applied, truly simulating the three-dimensional stress conditions at the engineering site.

[0059] 2. Through the axial impact loading system and lateral pendulum impact system of the present invention, axial and lateral low, medium, and high strain rate impact loads are applied under the complex three-dimensional stress conditions of the anchor solid, truly simulating the disturbance loads such as fault slip and blasting construction received by the anchor solid at the engineering site.

[0060] 3. Through the high-temperature environment simulation system of the present invention, efficient heating and temperature isolation of the anchor solid in a small space are realized, so as to simulate the high geothermal temperature in deep strata and the occurrence environment of anchor solids in special high-temperature projects.

[0061] 4. By designing a main reaction frame with high stiffness, high strength, and large size and a bolt-anchor solid fixing box, the present invention realizes the mechanical property test of full-scale bolt-anchor solids identical to that at the engineering site.

[0062] 5. Through the servo intelligent measurement and control system, all test systems of the present invention are coupled, realizing the construction of complex environments such as high geothermal temperature and three-dimensional ground stress, as well as the application of types of loads such as tension, shear, creep, pulse, and multi-strain impact, so as to accurately test the mechanical properties of the surrounding rock of full-scale high-temperature and high-pressure anchor solids.

[0063] The advantages of the additional aspects of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0064] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0065] Figure 1 It is the loading principle diagram of the test system provided by the embodiment of the present invention;

[0066] Figure 2 It is the upper left three-dimensional view of the test system provided by the embodiment of the present invention;

[0067] Figure 3 The upper left three-dimensional perspective view of the test system provided by the embodiment of the present invention;

[0068] Figure 4 The upper right three-dimensional view of the test system provided by the embodiment of the present invention;

[0069] Figure 5 The upper right three-dimensional perspective view of the test system provided by the embodiment of the present invention;

[0070] Figure 6 The upper right three-dimensional sectional view of the test system provided by the embodiment of the present invention;

[0071] Figure 7 The falling state of the front view of the test system provided by the embodiment of the present invention;

[0072] Figure 8 The rising state of the front view of the test system provided by the embodiment of the present invention;

[0073] Figure 9 The falling state of the side view of the test system provided by the embodiment of the present invention;

[0074] Figure 10 The rising state of the side view of the test system provided by the embodiment of the present invention;

[0075] Figure 11 The top view of the test system provided by the embodiment of the present invention;

[0076] Figure 12 The front view of the impact liquid transmission device provided by the embodiment of the present invention;

[0077] Among them, 1. Main body reaction force frame; 1-1. Load-bearing side beam; 1-2. Reinforced top beam; 1-3. Reinforced bottom beam; 1-4. Observation window; 2. Triaxial confining pressure loading system; 2-1. Lateral loading device; 2-2. Transverse loading device; 2-3. Transverse load sensor; 2-4. Foldable sliding track; 2-5. Sliding lifting device; 2-6. Sliding lifting lead screw; 2-7. Sliding lifting guide rail; 2-8. Sliding lifting synchronous power device; 3. Axial pulling loading system; 3-1. Load-bearing lead screw; 3-2. Servo motor; 3-3. Belt transmission mechanism; 3-4. Pulling connection member; 3-5. Axial load sensor; 3-6. Extended connection hole; 4. Triaxial pulse loading system; 4-1. High-flow dynamic hydraulic loading device; 4-2. High-frequency hydraulic control device; 5. Transverse shear loading system; 5-1. Shear loading member; 5-2. Shear loading reaction force fixing device; 6. Axial impact loading system; 6-1. Drop hammer automatic lifting device; 6-2. Light gas gun high-speed impact device; 6-3. Impact force liquid transfer device; 6-4. Hydraulic pipeline; 7. Lateral pendulum impact system; 7-1. Pendulum rotation shaft; 7-2. Pendulum; 7-3. Pendulum lifting device; 7-4. Protection device; 8. High-temperature environment simulation system; 8-1. Hot runner servo heating device; 8-2. Hot runner; 8-3. Heat insulation and heat preservation box; 9. Servo intelligent measurement and control system; 10. Bolt-anchored body; 10-1. Bolt end; 10-2. Anchoring end; 10-3. Fixed box body. Detailed implementation mode

[0078] The present invention will be further described below in conjunction with the drawings and embodiments.

[0079] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0080] In the case of no conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0081] In order to solve the limitations of the existing anchored body mechanical test system mentioned in the background technology, based on Figure 1 the loading principle of the anchored body, a true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchored body is designed and developed, as shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown in the figure, it includes a main reaction force frame 1, a triaxial confining pressure loading system 2, an axial tension and pull-out loading system 3, a triaxial pulse loading system 4, a lateral shear loading system 5, an axial impact loading system 6, a lateral pendulum impact system 7, a high-temperature environment simulation system 8, a servo intelligent measurement and control system 9, and an anchor bolt - anchor solid 10.

[0082] In this embodiment, preferably, the main reaction force frame 1 is the main frame structure of the true triaxial high-temperature and high-pressure creep - impact mechanical test system for deep surrounding rock anchor solids, which can form a test space and provide reaction force for multi-axial dynamic and static combined loading. Other systems are all installed on the main reaction force frame 1 or connected to other systems with the help of the main reaction force frame 1.

[0083] The triaxial confining pressure loading system 2 is installed on three sides of the side part of the main reaction force frame 1, with two sides being electro-hydraulic servo loading devices and one side being an oil cylinder loading device; the lateral pendulum impact system 7 is installed on one side of the side part of the main reaction force frame 1; the axial tension and pull-out loading system 3 and the axial impact loading system 6 are installed on the top of the main reaction force frame 1; the high-temperature environment simulation system 8 and the anchor bolt - anchor solid 10 are installed in the middle space of the main reaction force frame 1; the lateral shear loading system 5 is installed between the triaxial confining pressure loading system 2 and the main reaction force frame 1. In addition, the triaxial pulse loading system 4 and the servo intelligent measurement and control system 9 are relatively independent, and are respectively used to provide high-frequency pulse hydraulic loads and multi-system coupling integration.

[0084] As Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 As shown in the figure, the main reaction force frame 1 includes load-bearing side beams 1-1, a strengthened top beam 1-2, and a strengthened bottom beam 1-3. The three are assembled to form a portal reaction force structure, which has the structural advantages of high stiffness and high strength. Observation windows are respectively opened on both sides of the load-bearing side beams 1-1 to facilitate test operation and observe the deformation and failure process of the anchor bolt - anchor solid 10 during the test.

[0085] In this embodiment, preferably, the triaxial confining pressure loading system 2 includes a lateral loading device 2-1, a transverse loading device 2-2, a transverse load sensor 2-3, a foldable sliding track 2-4, and a sliding lifting device 2-5; the transverse loading device 2-2 is two sets of electro-hydraulic servo loading devices arranged at the transverse ends of the bolt-anchored body 10 to apply a transverse pressure to the bolt-anchored body 10; the lateral loading device 2-1 is an oil cylinder installed on the side part 1 of the main reaction force frame, and the piston of the oil cylinder passes through the main reaction force frame 1 to laterally apply a lateral pressure to the bolt-anchored body 10; the triaxial confining pressure is applied to the bolt-anchored body 10 by the transverse loading device 2-2 and the lateral loading device 2-1 together; the transverse load sensor 2-3 is installed between the transverse loading device 2-2, the lateral loading device 2-1 and the bolt-anchored body 10 to monitor the triaxial confining pressure in real time.

[0086] To facilitate the test operation and reduce the floor space occupied by the mechanical test system, one side of the transverse loading device 2-2 is installed on the foldable sliding track 2-4, and the transverse loading device 2-2 can be folded under the non-triaxial confining pressure loading state. The other side of the transverse loading device 2-2 is equipped with a sliding lifting device 2-5, and the other side of the transverse loading device 2-2 can be vertically lifted through the sliding lifting lead screw 2-6, the sliding lifting guide rail 2-7, and the sliding lifting synchronous power device 2-8, which is convenient for installing the bolt-anchored body 10 and other operations.

[0087] In this embodiment, preferably, the axial tensile loading system 3 includes a bearing lead screw 3-1, a servo motor 3-2, a belt transmission mechanism 3-3, a tensile connection member 3-4, and an axial load sensor 3-5; the bearing lead screw 3-1 passes through the top of the main reaction force frame 1, the servo motor 3-2 and the belt transmission mechanism 3-3 are located at the top of the main reaction force frame 1, and the tensile connection member 3-4 is located at the top of the internal space of the main reaction force frame 1 and is used to fixedly connect the bolt-anchored body 10 during the tensile loading process; a variety of expansion connection holes 3-6 with different sizes and shapes are arranged on the tensile connection member 3-4 to facilitate the installation of various mechanical test fixtures and expand the functions of the test system. The axial load sensor 3-5 is located at the bottom of the internal space of the main reaction force frame 1 and can monitor the axial bearing pressure or tensile force of the bolt-anchored body 10 in real time.

[0088] In this embodiment, preferably, the three-axis pulse loading system 4 includes a high-flow dynamic hydraulic loading device 4-1 and a high-frequency hydraulic control device 4-2. The high-flow dynamic hydraulic loading device 4-1 can convert mechanical energy into the potential energy of hydraulic oil and is connected to the three-axis confining pressure loading system 2 through a hydraulic pipeline to provide high-flow high-pressure oil for the lateral loading device 2-2 and the lateral loading device 2-1. The high-frequency hydraulic control device 4-2 can control the oil pressure output by the high-flow dynamic hydraulic loading device 4-1 with high frequency and high precision, so as to control the lateral loading device 2-2 and the lateral loading device 2-1 to apply high-frequency pulse loads of any waveform such as sine waves and simple harmonic waves to the bolt-anchored body 10.

[0089] In this embodiment, preferably, the lateral shear loading system 5 is an accessory system of the three-axis confining pressure loading system 2, including a shear loading member 5-1 and a shear loading reaction fixing device 5-2. During the test, the shear loading member 5-1 is installed between the lateral loading device 5-2 and the bolt-anchored body 10, and then the lateral shear load can be applied. The shear loading reaction fixing device 5-2 can be fixed to the main reaction frame 1 through a bolt, so as to prevent deflection during the shear loading process. The lateral shear loading system 5 can cooperate with the servo intelligent measurement and control system 9 to achieve non-constant load loading or constant stiffness control loading. The lateral shear loading system 5 can cooperate with the three-axis pulse loading system 4 to apply a lateral pulse vibration shear load to the bolt-anchored body 10.

[0090] In this embodiment, preferably, the axial impact loading system 6 is installed on the top of the main reaction frame 1, including a drop hammer automatic lifting device 6-1, a light gas gun high-speed impact device 6-2, an impact force liquid transmission device 6-3, and a hydraulic pipeline 6-4. The impact force liquid transmission device 6-3 is a double-cylinder structure and is connected through the hydraulic pipeline 6-4. The bolt end 10-1 extends upward through the impact force liquid transmission device 6-3. During the test, the drop hammer automatic lifting device 6-1 lifts a specified-weight drop hammer to a specified height and then freely falls. The generated specified numerical impact energy acts on the impact force liquid transmission device 6-3 and is quickly transmitted through the hydraulic pipeline 6-4, and finally acts on the bolt end 10-1, generating a medium strain rate impact load on the bolt end 10-1. Compared with the pulse dynamic load generated by the three-axis pulse loading system 4, the action rate of such an impact load is higher, and the strain rate can reach the medium range.

[0091] In this embodiment, preferably, the axial impact loading system 6 is located at the side of the axial pulling loading system 3, and the two do not interfere with each other, so that the pulling load and the impact load can be applied to the bolt end 10-1 simultaneously. In addition, the drop hammer automatic lifting device 6-1 and the light gas gun high-speed impact device 6-2 can be replaced with each other. The light gas gun high-speed impact device 6-2 is the power device of the split Hopkinson pressure bar, which can generate high strain rate impact load, so as to further expand the strain rate loading range of the axial impact load.

[0092] In this embodiment, preferably, the lateral pendulum impact system 7 is installed on the side of the main body reaction frame 1, and includes a pendulum rotating shaft 7-1, a pendulum 7-2, a pendulum lifting device 7-3, and a protection device 7-4. During the test, the pendulum 7-2 is rotated and lifted along the pendulum rotating shaft 7-1 by the pendulum lifting device 7-3, and then the pendulum 7-2 is released. The pendulum 7-2 freely falls to apply a lateral impact load to the anchorage end 10-2. To ensure safety, protection devices 7-4 are installed on both the front and back sides of the pendulum 7-2. And the lateral pendulum impact system 7 and the triaxial confining pressure loading system 2 can be loaded simultaneously, so as to apply dynamic and static superimposed loads to the anchor body 10.

[0093] In this embodiment, preferably, the high-temperature environment simulation system 8 includes a hot runner servo heating device 8-1, a hot runner 8-2, and a heat insulation and heat preservation box 8-3. The servo heating device 8-1 is fixed on the inner surface of the fixed box 10-3. A groove is opened on the inner surface of the servo heating device 8-1, and the hot runner 8-2 is embedded in the groove. The hot runner 8-2 can be in direct contact with the anchor body 10, greatly improving the heating efficiency. The outer shell of the heat insulation and heat preservation box 8-3 is a three-layer structure, forming two heat insulation spaces, namely vacuum heat insulation and aerogel heat insulation, so as to prevent heat from spreading outwards. It can not only improve the heating efficiency of the anchor body 10, but also reduce the interference of high temperature on other systems. The heat insulation and heat preservation box 8-3 is arranged on the foldable sliding track 2-4, which is convenient to move in and out. Compared with the traditional heating box, the high-temperature environment simulation system 8-3 simplifies the mechanism, improves the heating efficiency and reduces the device size.

[0094] In this embodiment, preferably, the servo intelligent measurement and control system 9 is equipped with triaxial high-frequency response force sensors, transient hydraulic sensors, and transient flow sensors, so as to accurately monitor the transient impact load generated by the axial impact loading system 6 and the transient deformation of the bolt-anchor body 10. It can monitor the shear stiffness of the anchor body 10 and various types of loads such as tension, shear, creep, pulse, and multi-strain rate impact in real time, and can set the load combination display mode.

[0095] Based on the above-mentioned true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchor bodies, the present invention proposes a true triaxial high-temperature and high-pressure creep-impact mechanical test method for deep surrounding rock anchor bodies, including the following processes:

[0096] S1: Test preparation.

[0097] First, start the servo intelligent measurement and control system 9 to test the functions of the mechanical test system of the present invention to make it meet the test functions. Then, slide the lateral loading device 2-2 to one side of the main reaction frame 1 through the foldable sliding track 2-4 to make room for the installation of the bolt-anchored body. Then, install the hot runner servo heating device 8-1 and the hot runner 8-2 in the solid box 10-3. Finally, place the bolt end 10-1 of the bolt-anchored body 10 upward and the anchoring end 10-2 downward, and install them in the fixed box 10-3. The bolt end 10-1 is relatively fixed to the pulling connection member 3-4 of the axial pulling and loading system 3.

[0098] S2: Test process.

[0099] S2.1: Use the heat insulation and preservation box 8-3 of the high-temperature environment simulation system 8 to tightly wrap the fixed box 10-3, the hot runner servo heating device 8-1, the hot runner 8-2, and the anchoring end 10-2 to isolate the internal temperature from external devices. Then, use the hot runner servo heating device 8-1 and the hot runner 8-2 of the high-temperature environment simulation system 8 to quantitatively heat the anchoring end 10-2 of the bolt-anchored body 10, precisely control the temperature of the anchored body 10-2, and simulate special temperature conditions such as high in-situ ground temperature.

[0100] S2.2: Drive the lateral loading device 2-2 to slide to the side of the main reaction frame by the foldable sliding track 2-4 and lock it. Use the triaxial confining pressure loading system 2 and the triaxial pulse loading system 4 to apply triaxial confining pressure to the bolt-anchored body. Among them, the lateral loading device 2-2 is used to apply bidirectional lateral loads parallel to the bearing side beam 1-1 of the main reaction frame 1, and the lateral loading device 2-1 is used to apply a unidirectional lateral load perpendicular to the bearing side beam 1-1 of the main reaction frame 1, so as to simulate the three-dimensional in-situ stress occurrence state of the underground engineering site. During the triaxial loading process, the triaxial load is monitored in real time through the lateral load sensor.

[0101] S2.3: When applying the triaxial pulse confining pressure load, only start the triaxial pulse loading system 4. The high-flow dynamic hydraulic loading device 4-1 and the high-frequency hydraulic control device 4-2 provide high-precision dynamic pulse oil pressure for the triaxial confining pressure loading system 2, and then load the pulse load onto the bolt-anchored body 10, so as to simulate pulse disturbance loads such as mechanical drilling and periodic fault rupture at the engineering site.

[0102] S2.4: When applying triaxial shear load, only a shear loading device 5-1 needs to be arranged between the triaxial confining pressure loading system 2 and the heat insulation and preservation box 8-3, and the pressure generated by the triaxial confining pressure loading system 2 can be converted into a lateral shear force. To prevent the triaxial confining pressure loading system 2 from deflecting during the shear loading process, the triaxial confining pressure loading system 2 is fixed to the main reaction force frame 1 through the shear loading reaction force fixing device 5-2.

[0103] S2.5: When applying axial pulling load, the pulling connection member 3-4 is relatively fixed to the anchor rod end 10-1. The servo motor 3-2 drives the belt transmission mechanism 3-3 to rotate. The belt transmission mechanism 3-3 has the function of reducing speed and increasing torque. Then, the belt transmission mechanism 3-3 drives the bearing lead screw 3-1 to rotate and lift relative to the main reaction force frame 1, and finally drives the pulling connection member 3-4 to lift, applying an axial pulling load to the anchor rod-anchored body 10. The axial load sensor 3-5 can monitor the axial pulling load borne by the anchor rod-anchored body 10 in real time, monitor and store the test data, and feedback to adjust the test process.

[0104] S2.6: When applying axial impact load, first, the specified weight drop hammer is lifted to a specified height by the drop hammer automatic lifting device 6-1, and then it freely falls. The generated specified impact energy acts on the impact force liquid transmission device 6-3 and is quickly transmitted through the hydraulic pipeline 6-4, and finally acts on the anchor rod end 10-1, generating a medium strain rate impact load on the anchor rod end 10-1. Compared with the pulse dynamic load generated by the triaxial pulse loading system 4, the action rate of this kind of impact load is higher, and the strain rate can reach the medium range. In addition, the drop hammer automatic lifting device 6-1 and the light gas gun high-speed impact device 6-2 can be replaced with each other. The light gas gun high-speed impact device 6-2 is the power device of the split Hopkinson pressure bar, which can generate a high strain rate impact load, thus further expanding the strain rate loading range of the axial impact load.

[0105] S2.7: When applying lateral impact load, the pendulum 7-2 is rotated and lifted along the pendulum rotation axis 7-1 by the pendulum lifting device 7-3, and then the pendulum 7-2 is released. The pendulum 7-2 freely falls to apply a lateral impact load to the anchoring end 10-2. To ensure safety, protective devices 7-4 are installed on both the front and back sides of the pendulum 7-2. The lateral pendulum impact system 7 can be loaded simultaneously with the triaxial confining pressure loading system 2, so as to apply a static and dynamic superimposed load to the anchored body 10.

[0106] S2.8: Through the servo intelligent measurement and control system 9, all the above test functions such as high-temperature environment construction, triaxial confining pressure loading, three-dimensional pulse loading, triaxial shear, axial pulling, axial impact, and lateral impact can be coupled and integrated, so as to accurately test the mechanical properties of full-scale high-temperature and high-pressure anchored body surrounding rock.

[0107] It is understandable that the various steps of the above test process are not limited by the front-back order and can be tested according to the items to be tested as needed, which will not be elaborated here.

[0108] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchor solids, characterized in that, At least including: A main reaction force frame for forming a test space and providing a reaction force for creep-impact load loading; A true triaxial confining pressure loading system arranged on the side of the main reaction force frame, for applying a true triaxial static load to the bolt-anchored body through hydraulic pressure; An axial tension loading system arranged on the top of the main reaction force frame, for applying an axial tension load to the anchor or the anchored body through the cooperation of a servo motor and a lead screw; A lateral shear loading system arranged on the side of the main reaction force frame, taking the true triaxial confining pressure loading system as the loading power, and cooperating with a shear loading member to apply a lateral shear load to the bolt-anchored body; A triaxial pulse loading system for providing high-frequency pulsed hydraulic pressure for the true triaxial confining pressure loading system and the lateral shear loading system, to apply a triaxial medium and low strain rate pulsed dynamic load to the bolt-anchored body; An axial impact loading system arranged on the top of the main reaction force frame, for applying a multi-strain rate axial impact load to the bolt-anchored body; the axial impact loading system includes a drop hammer automatic lifting device, a light gas gun high-speed impact device, an impact force liquid transmission device and a hydraulic pipeline, the impact force liquid transmission device is a double-cylinder structure, connected through the hydraulic pipeline, and the bolt end extends upward through the impact force liquid transmission device; The drop hammer automatic lifting device lifts a drop hammer with a specified weight to a specified height and then freely falls, and the generated impact energy with a specified value acts on the impact force liquid transmission device and is quickly transmitted through the hydraulic pipeline, and finally acts on the bolt end to generate a medium strain rate impact load on the bolt end; The axial impact loading system is located on the side of the axial tension loading system and can simultaneously apply a tension load and an impact load to the bolt end. The drop hammer automatic lifting device and the light gas gun high-speed impact device can be replaced with each other. The light gas gun high-speed impact device is a power device of a split Hopkinson pressure bar and can generate a high strain rate impact load; A lateral pendulum impact system arranged on the side of the main reaction force frame, for applying a low or medium strain rate lateral impact load to the bolt-anchored body through a pendulum mechanism; A high-temperature environment simulation system arranged at the middle position of the main reaction force frame, for constructing a high-temperature occurrence environment of the bolt-anchored body.

2. The true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchored body according to claim 1, characterized in that The test system further includes a servo intelligent measurement and control system, and the servo intelligent measurement and control system includes: triaxial high-frequency response force sensors, transient hydraulic sensors and transient flow sensors, for monitoring the transient impact load generated by the axial impact loading system and the transient deformation of the bolt-anchored body; The servo intelligent measurement and control system is coupled to control the true triaxial confining pressure loading system, the axial tension loading system, the axial tension loading system, the lateral shear loading system, the triaxial pulse loading system, the axial impact loading system, the lateral pendulum impact system and the high-temperature environment simulation system, to achieve high-precision programmed control of the entire test process; The servo intelligent measurement and control system can monitor the shear stiffness of the anchor solid in real time, and perform separate and combined displays for tension, shear, creep, pulse, and multi-strain rate impact, and can set the load combination mode.

3. The true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchor solid according to claim 2, characterized in that The triaxial confining pressure loading system includes: a lateral loading device, a lateral loading device, a lateral load sensor, a foldable sliding track, and a sliding lifting device; The lateral loading device is two sets of electro-hydraulic servo loading devices arranged at the lateral ends of the bolt-anchor solid to apply lateral pressure to the bolt-anchor solid; the lateral loading device is an oil cylinder installed on the side of the main body reaction frame, and the piston of the oil cylinder passes through the main body reaction frame to apply lateral pressure to the bolt-anchor solid laterally; the triaxial confining pressure is applied to the bolt-anchor solid through the combined action of the lateral loading device and the lateral loading device; The lateral load sensor is installed between the lateral loading device, the lateral loading device and the bolt-anchor solid to monitor the triaxial confining pressure in real time; One side of the lateral loading device is installed on the foldable sliding track, and the lateral loading device is folded in the non-triaxial confining pressure loading state; the other side of the lateral loading device is equipped with the sliding lifting device, and the other side of the lateral loading device is vertically lifted through the sliding lifting lead screw, the sliding lifting guide rail and the sliding lifting synchronous power device.

4. The true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchor solid according to claim 3, characterized in that The axial tension loading system includes: a load-bearing lead screw, a servo motor, a belt transmission mechanism, a tension connection member, and an axial load sensor; The load-bearing lead screw passes through the top of the main body reaction frame, the servo motor and the belt transmission mechanism are located at the top of the main body reaction frame, the tension connection member is located at the top of the internal space of the main body reaction frame, and a variety of expansion connection holes with different sizes and shapes are arranged on the tension connection member to install different types of mechanical test fixtures, and the axial load sensor is located at the bottom of the internal space of the main body reaction frame; The servo motor drives the belt transmission mechanism to rotate, the belt transmission mechanism drives the load-bearing lead screw to rotate and lift relative to the main body reaction frame, drives the tension connection member to lift, applies an axial tension load to the bolt-anchor solid, and the axial load sensor monitors the axial tension load borne by the bolt-anchor solid in real time and feeds the data back to the servo intelligent measurement and control system.

5. The true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchor solid according to claim 4, characterized in that The lateral shear loading system is an accessory system of the triaxial confining pressure loading system, including: a shear loading member and a shear loading reaction fixing device; The shear loading member is installed between the lateral loading device and the bolt-anchor solid to apply a lateral shear load to the anchoring end, and the shear loading reaction fixing device is fixed to the main body reaction frame through a pin; The transverse shear loading system cooperates with the servo intelligent measurement and control system to perform non-constant load loading or constant stiffness control loading. The transverse shear loading system cooperates with the triaxial pulse loading system to apply a transverse pulse vibration shear load to the bolt-anchored body.

6. The true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchored body according to claim 5, characterized in that The lateral pendulum impact system includes: a pendulum rotation shaft, a pendulum, a pendulum lifting device and a protection device. The pendulum is rotated and lifted along the pendulum rotation shaft by the pendulum lifting device, and then the pendulum is released. The pendulum freely falls to apply a lateral impact load to the anchoring end. The protection device is installed on both the front and rear sides of the pendulum. The lateral pendulum impact system and the triaxial confining pressure loading system can perform loading simultaneously.

7. The true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchored body according to claim 6, characterized in that The high-temperature environment simulation system includes: a hot runner servo heating device, a hot runner and a heat insulation and preservation box body. The servo heating device is fixed on the inner surface of the fixed box body. A groove is opened on the inner surface of the servo heating device, and the hot runner is embedded and installed in the groove. The hot runner is in direct contact with the anchored body. The outer shell of the heat insulation and preservation box body is a three-layer structure, forming two heat insulation spaces, namely vacuum heat insulation and aerogel heat insulation. The heat insulation and preservation box body is arranged on the foldable sliding track.

8. A true triaxial high-temperature and high-pressure creep-impact mechanical test method for deep surrounding rock anchor solids, characterized in that, Using the true triaxial high-temperature and high-pressure creep-impact mechanical test system for deep surrounding rock anchored body according to claim 7, includes the following process: Start the servo intelligent measurement and control system to make the functions of the system meet the test requirements. Slide the transverse loading device to one side of the main reaction frame through the foldable sliding track to make room for the installation of the bolt-anchored body. Install the hot runner servo heating device and the hot runner in the solid box body. Place the bolt end of the bolt-anchored body upward and the anchoring end downward, and install it in the fixed box body. The bolt end is relatively fixed to the pulling connection member of the axial pulling loading system; Use the heat insulation and preservation box body of the high-temperature environment simulation system to tightly wrap the fixed box body, the hot runner servo heating device, the hot runner and the anchoring end to isolate the internal temperature from the external devices. Use the hot runner servo heating device and the hot runner of the high-temperature environment simulation system to quantitatively heat the anchoring end of the bolt-anchored body, and control the temperature of the anchored body to simulate various temperature conditions; Drive the transverse loading device to slide to the side of the main reaction frame along the foldable sliding track and lock it. Use the triaxial confining pressure loading system to cooperate with the triaxial pulse loading system to apply triaxial confining pressure to the bolt-anchored body. The transverse loading device is used to apply a two-way transverse load parallel to the bearing side beam of the main reaction frame, and the lateral loading device is used to apply a one-way lateral load perpendicular to the bearing side beam of the main reaction frame to simulate the three-dimensional in-situ stress occurrence state of the underground engineering site. During the triaxial loading process, the triaxial load is monitored in real time through the transverse load sensor; When applying triaxial pulse confining pressure load, start the triaxial pulse loading system. The high-flow dynamic hydraulic loading device and high-frequency hydraulic control device provide high-precision dynamic pulse oil pressure for the triaxial confining pressure loading system, and then load the pulse load onto the bolt-anchored body to simulate the pulse disturbance load in the engineering field. When loading the triaxial shear load, arrange a shear loading device between the triaxial confining pressure loading system and the heat insulation and preservation box body, convert the pressure generated by the triaxial confining pressure loading system into a lateral shear force, and fix the triaxial confining pressure loading system to the main reaction force frame through the shear loading reaction force fixing device. When loading the axial pulling load, the pulling connection component is relatively fixed to the bolt end. The servo motor drives the belt transmission mechanism to rotate. The belt transmission mechanism has the function of reducing speed and increasing torque. Then the belt transmission mechanism drives the bearing lead screw to rotate and lift relative to the main reaction force frame, and finally drives the pulling connection component to lift and lower, applying an axial pulling load to the bolt-anchored body. The axial load sensor monitors the axial pulling load borne by the bolt-anchored body in real time. When applying the axial impact load, first use the drop hammer automatic lifting device to lift the specified weight drop hammer to the specified height, and then let it fall freely. The generated specified value of impact energy acts on the impact force liquid transmission device and is quickly transmitted through the hydraulic pipeline, and finally acts on the bolt end, generating a medium strain rate impact load on the bolt end. The drop hammer automatic lifting device and the light gas gun high-speed impact device are mutually replaceable. The light gas gun high-speed impact device is the power device of the split Hopkinson pressure bar, which can generate a high strain rate impact load to expand the strain rate loading range of the axial impact load. When applying the lateral impact load, use the pendulum lifting device to lift the pendulum along the pendulum rotation axis and then release the pendulum. The pendulum falls freely to apply a lateral impact load to the anchorage end. The lateral pendulum impact system can be loaded simultaneously with the triaxial confining pressure loading system, so as to apply a dynamic and static superimposed load to the anchored body.

9. The true triaxial high-temperature and high-pressure creep-impact mechanical test method for deep surrounding rock anchor solids according to claim 8, characterized in that It includes the following processes: Through the servo intelligent measurement and control system, the functions including high-temperature environment construction, triaxial confining pressure loading, three-dimensional pulse loading, triaxial shear, axial pulling, axial impact and lateral impact tests are coupled and integrated to accurately test the mechanical properties of the full-scale high-temperature and high-pressure anchored body surrounding rock.

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