Simulation test system for deformation and failure of surrounding rock of cavern

Abstract

The invention relates to the technical field of cavern surrounding rock simulation systems, and discloses a cavern surrounding rock deformation and failure simulation test system, which comprises a test bed, a mechanism frame is fixed at the top end of the test bed, toughened glass is fixed on the outer side of the mechanism frame, and one side of the toughened glass is hinged; the device further comprises a pressing plate, the pressing plate vertically moves in the tempered glass, two sets of hydraulic rods are symmetrically and fixedly connected to the top end of the pressing plate, a cross rod is fixed to the top ends of the two sets of hydraulic rods, and the cross rod is fixed to the test bed. The experimental material is placed in the middle of the top end of the mechanism frame. According to the invention, by using the two groups of contact assemblies which synchronously move with the simulation mechanism, stress change data in different vertical directions can be synchronously obtained during surrounding rock deformation failure simulation, and stress change data under different distances can be obtained; therefore, more reference data can be obtained when the equipment can synchronously carry out simulation test, and the later underground construction engineering can be protected.

Description

Technical Field

[0001] The invention relates to the technical field of cavern surrounding rock simulation systems, and in particular to a cavern surrounding rock deformation and destruction simulation test system. Background Art

[0002] In recent years, there are more and more underground construction projects, which has led to increasingly prominent engineering geological problems. Since the surrounding rock is the rock surrounding the cavern, which can be artificially excavated or naturally formed, the physical and mechanical properties of the surrounding rock vary greatly, and the deformation and failure mechanisms are different, which will bring many hidden dangers to underground engineering practice. Therefore, before the formal construction, it is necessary to conduct deformation and failure simulation tests on the surrounding rock of the cavern to specifically study the deformation and failure mechanism of the corresponding surrounding rock of the cavern, so as to reduce the risks during excavation and construction.

[0003] The Chinese patent with the announcement number CN216955503U discloses a cavern surrounding rock deformation and destruction simulation test device, including a mounting mechanism, a first loading mechanism, a second loading mechanism and a third loading mechanism; the mounting mechanism includes a mounting platform, a loading platform and a support rod, the first loading mechanism includes a first loading driver, a first loading frame, a first force transmission rod and a first pressure head, the loading platform is provided with a slide extending along the X-axis direction, the second loading mechanism includes a second loading driver, a second loading frame, a second force transmission rod and a second pressure head, the loading platform is also provided with a slide extending along the Y-axis direction, the third loading mechanism includes a third loading driver, a third loading frame, a third force transmission rod and a third pressure head. The cavern surrounding rock deformation and destruction simulation test device of the above application can study the relationship between the stress and strain of the surrounding rock in three different directions of XYZ, and study the deformation and destruction mechanism of the surrounding rock.

[0004] With respect to the above-mentioned related technologies, the inventor believes that there are the following defects:

[0005] When the above device is adapted in the XY direction, it cannot perform adjustment tests in the Z direction (vertical direction), and can only perform displacement tests on a single plane. Therefore, the stress-strain relationship obtained is not comprehensive and accurate enough. Secondly, the force transmission rod and pressure head at the Z position can only perform vertical pressure and testing in a single direction. The coordination of the three results in the data obtained by the entire device being relatively single and lacking in comparability. The data obtained by the simulation is not comprehensive enough, which is not conducive to the subsequent excavation and construction operations. Summary of the invention

[0006] In order to solve the technical problem that when the existing device proposed in the background technology performs simulation testing, the data obtained is relatively single and not comprehensive, which is easy to cause hidden dangers during later pruning, the present invention provides a cavern surrounding rock deformation and damage simulation test system.

[0007] The present invention is implemented by the following technical scheme: a cave surrounding rock deformation and destruction simulation test system, comprising a test bench, a mechanism frame is fixed on the top of the test bench, and a tempered glass is fixed on the outside of the mechanism frame, and one side of the tempered glass is hinged;

[0008] It also includes a pressing plate, which moves vertically in the tempered glass, and two groups of hydraulic rods are symmetrically fixedly connected to the top of the pressing plate, and the tops of the two groups of hydraulic rods are fixed with cross bars, and the cross bars are fixed to the test bench;

[0009] Experimental materials, the experimental materials are placed in the middle of the top of the mechanism frame;

[0010] A receiving mechanism, which is installed around the mechanism frame and includes two groups of contact components, and the two groups of contact components are symmetrically arranged;

[0011] A simulation mechanism is arranged at the bottom end of the pressure plate, including a circular plate, the top end of the circular plate is slidably abutted against the pressure plate, the bottom end of the circular plate is rotatably connected to a movable rod, the upper outer wall of the movable rod is provided with a threaded protrusion, and the lower outer wall of the movable rod is provided with a spiral groove, the threaded protrusion and the spiral groove are arranged in opposite directions to keep the contact component stable when increasing the simulation force.

[0012] Through the above technical scheme, tempered glass is used to facilitate real-time observation of the internal experimental conditions, and the internal experiment simulates the force acting when the surrounding rock is deformed, and the stress and strain data collected at different heights can be summarized and analyzed by two groups of symmetrically arranged contact components; and the simulation mechanism can synchronously drive the two groups of contact components to move synchronously when simulating the pressure on different points of the experimental material, so that the simulation mechanism can always be in the same vertical plane with the two groups of symmetrically arranged contact components, so as to collect the stress and strain generated by the deformation and destruction of the surrounding rock, and as the position of the simulation mechanism changes, the spacing with the contact components will also be different, so that the strain generated at different distances can be collected, so as to obtain more comprehensive experimental data of surrounding rock deformation and destruction simulation, provide reasonable data support for underground construction projects, and reduce pruning risks.

[0013] As a further improvement of the above scheme, the simulation mechanism also includes a limit plate 2 and a limit plate 1 which are slidably connected to the movable rod from top to bottom in sequence. The middle part of the limit plate 2 and the limit plate 1 are provided with sliding grooves to accommodate the sliding of the movable rod, and the limit plate 1 and the limit plate 2 are arranged perpendicular to each other. Contact components are connected on both sides of the limit plate 1 and the limit plate 2 for comparative collection of simulation experiment data.

[0014] Through the above technical solution, as the movable rod moves, the contact components on both sides can be driven to adaptively displace under the sliding of the limiting plate 2 and the limiting plate 1, and maintained in a relatively vertical cross section.

[0015] As a further improvement of the above scheme, a vertical groove is provided on the lower outer wall of the movable rod, and the vertical groove is connected to the bottom end of the spiral groove. A round block is slidably connected to the vertical groove and the spiral groove. A circular ring is fixedly connected to the outer side of the circular block, and a movable block is fixedly connected to the bottom end of the circular ring. A sleeve is symmetrically fixedly connected to the top of the movable block. A pressure sensor is provided at the bottom of the movable rod, and a cylinder is built into the movable block for driving the movable block to move in a single horizontal direction.

[0016] As a further improvement of the above scheme, a horizontal transverse groove is provided on the top of the limit plate 1, and a horizontal sliding block is horizontally slidably connected in the horizontal transverse groove. A circular ring 2 is fixedly connected to the top of the horizontal sliding block. A spring 2 is elastically connected between the circular ring 2 and the circular plate. The spring 2 is sleeved on the outside of the threaded protrusion, and a threaded groove is provided on the inner wall of the circular ring 2, which can be threadedly connected to the threaded protrusion. The aperture of the circular ring 2 is larger than the cross-sectional diameter of the movable rod so as not to affect the normal sliding of the movable rod.

[0017] As a further improvement of the above scheme, the receiving mechanism includes sliding bars evenly arranged around the mechanism frame, one group of sliding bars is symmetrically arranged at the top of the mechanism frame and is horizontally slidably connected to a moving block 2, and both groups of moving blocks 2 are provided with cylinders for single horizontal direction displacement, and both groups of moving blocks 2 are fixedly connected to a guide rod in the middle, and the outer wall of the guide rod slides horizontally with the bottom end of the moving block 1 to realize the specified movement of the moving block 1 at the top of the mechanism frame.

[0018] Through the above technical scheme, the movable rod can use the hydraulic rod to push the pressure plate to realize the downward sliding of the circular plate, and use the pressure sensor to collect real-time pressure data and summarize and send it to the terminal. When the circular plate slides down, it can realize its own rotation under the sliding of the spiral groove and the round block, and as the movable rod descends, the threaded protrusion can be connected with the thread of the inner wall of the second circular ring. Since the spiral groove and the threaded protrusion are set in opposite directions, it is ensured that as the movable rod descends, the threaded protrusion can be connected with the thread of the second circular ring so that the second circular ring is always at the same vertical height, avoiding continuous downward pressure on the contact components on both sides, and only allowing the contact components to stably contact the experimental material.

[0019] As a further improvement of the above scheme, the contact assembly includes two groups of slides, the two groups of slides can slide horizontally relative to the slide bar, and the tops of the two groups of slides are provided with vertical grooves, and vertical sliders are slidably connected in the vertical grooves, the outer sides of the two groups of vertical sliders are fixedly connected with inclined plates, and the bottom ends of the two groups of inclined plates are provided with inclined groove openings.

[0020] As a further improvement of the above scheme, the two groups of inclined grooves are slidably connected with sliding rods, and the bottom ends of the two groups of sliding rods are fixedly connected with outer plates, and multiple groups of contact rods are evenly fixedly connected to the inner sides of the outer plates, and the multiple groups of contact rods are horizontally slidably connected to the slide plate, and sliding holes are provided at the sliding positions of the slide plate and the contact rods.

[0021] As a further improvement of the above scheme, multiple groups of springs are elastically connected between the slide plate and the outer plate, wherein the multiple groups of springs are all sleeved on the outside of the contact rod to drive the two groups of outer plates to move inward synchronously to contact and abut the experimental materials, wherein pressure sensors are provided at the contact rods.

[0022] Through the above technical scheme, when the limit plate 1 and the limit plate 2 are vertically lowered, the inclined plates on both sides can be synchronously driven to push the outer plate to slide inward until it stably contacts the outer wall of the experimental material, and the limit plate 1 can always maintain a sliding abutment state with the limit plate 2 under the multiple groups of springs in the two groups of contact components connected to it.

[0023] As a further improvement of the above solution, the tops of the two groups of vertical sliding blocks are respectively fixedly connected to both ends of the limiting plate 1 and the limiting plate 2, so as to synchronously drive the two groups of contact components to operate.

[0024] As a further improvement of the above scheme, the inner sides of the two groups of slides are respectively fixedly connected to the outer sides of the moving block 2 and the guide rod for synchronous horizontal displacement, ensuring that the simulated pressure points and the two groups of contact components are in different vertical planes, and the stress and strain data at different position spacings can be collected.

[0025] Through the above technical solution, data collection will be more comparative, so that different data can be obtained for different pressure positions and forces, and more dimensional data on the deformation and damage of the surrounding rock can be obtained.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) The present invention utilizes two groups of contact components that move synchronously with the simulation mechanism, ensuring that when simulating the deformation and failure of the surrounding rock, stress change data in different vertical directions can be obtained synchronously, and stress change data at different distances can also be obtained, so that the equipment can obtain more reference data when performing simulation tests synchronously, which can escort the later underground construction projects.

[0028] (ii) The present invention utilizes the reverse setting of the spiral groove and the threaded protrusion to ensure that when conducting a simulation test, the two groups of contact components can be synchronously driven to keep the contact distance of the test material unchanged and keep the vertical height of the ring two unchanged, thereby ensuring that only the force change in the vertical direction can be achieved; and after completing a single simulation test, the limit plate one and the limit plate two can return to their original position under the action of multiple groups of springs one, and the limit plate one and the limit plate two can slide and abut against each other under the action of multiple groups of springs one. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the overall structure of a cave surrounding rock deformation and failure simulation test system provided in Example 1 of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the receiving mechanism and the simulation mechanism of the present invention;

[0031] Figure 3 For the present invention Figure 2 A schematic diagram of the top view structure of FIG.

[0032] Figure 4 For the present invention Figure 2 A schematic diagram of the structure enlarged at a in the middle;

[0033] Figure 5 For the present invention Figure 2 The enlarged schematic diagram of the structure at b in the middle;

[0034] Figure 6 For the present invention Figure 2 Enlarged schematic diagram of the structure at c in the middle.

[0035] Description of main symbols:

[0036] 1. Test bench; 2. Mechanism frame; 3. Tempered glass; 4. Pressure plate; 5. Hydraulic rod; 6. Experimental materials; 7. Slide bar; 8. Slide plate; 9. Contact rod; 10. Outer plate; 11. Spring 1; 12. Slide bar; 13. Inclined plate; 14. Vertical slider; 15. Guide rod; 16. Sleeve; 17. Moving block 1; 18. Moving block 2; 19. Ring 1; 20. Round block; 21. Movable rod; 22. Vertical groove; 23. Spiral groove; 24. Round plate; 25. Threaded protrusion; 26. Ring 2; 27. Spring 2; 28. Horizontal slider; 29. ​​Limit plate 1; 30. Horizontal groove; 31. Limit plate 2. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0038] Embodiment 1:

[0039] Please combine Figure 1-Figure 5 A cave surrounding rock deformation and failure simulation test system of this embodiment includes a test bench 1, a mechanism frame 2 is fixed on the top of the test bench 1, and a tempered glass 3 is fixed on the outside of the mechanism frame 2, and one side of the tempered glass 3 is hinged;

[0040] It also includes a pressing plate 4, which moves vertically in the tempered glass 3, and two groups of hydraulic rods 5 are symmetrically fixedly connected to the top of the pressing plate 4, and the tops of the two groups of hydraulic rods 5 are fixed with cross bars, which are fixed to the test bench 1;

[0041] Experimental material 6, experimental material 6 is placed in the middle of the top of the mechanism frame 2;

[0042] The receiving mechanism is installed around the mechanism frame 2 and includes two groups of contact components, and the two groups of contact components are symmetrically arranged;

[0043] The simulation mechanism is arranged at the bottom end of the pressure plate 4, including a circular plate 24, the top end of the circular plate 24 is slidably abutted against the pressure plate 4, the bottom end of the circular plate 24 is rotatably connected with a movable rod 21, the upper outer wall of the movable rod 21 is provided with a threaded protrusion 25, and the lower outer wall of the movable rod 21 is provided with a spiral groove 23, the threaded protrusion 25 and the spiral groove 23 are arranged in opposite directions to keep the contact component stable when increasing the simulation force.

[0044] The simulation mechanism also includes a limit plate 2 31 and a limit plate 1 29 which are slidably connected to the movable rod 21 from top to bottom in sequence. The limit plate 2 31 and the limit plate 1 29 are provided with sliding grooves in the middle to accommodate the sliding of the movable rod 21, and the limit plate 1 29 and the limit plate 2 31 are arranged perpendicular to each other. Contact components are connected on both sides of the limit plate 1 29 and the limit plate 2 31 for comparative collection of simulation experiment data.

[0045] A vertical groove 22 is provided on the outer wall of the lower part of the movable rod 21, and the vertical groove 22 is connected to the bottom end of the spiral groove 23. A round block 20 is slidably connected in the vertical groove 22 and the spiral groove 23. A circular ring 19 is fixedly connected to the outer side of the circular block 20, and a moving block 17 is fixedly connected to the bottom end of the circular ring 19. A sleeve 16 is symmetrically fixedly connected to the top of the moving block 17. A pressure sensor is provided at the bottom of the movable rod 21, and a cylinder is built into the moving block 17 to drive the moving block 17 to move in a single horizontal direction.

[0046] A horizontal transverse groove 30 is provided on the top of the limiting plate 29, and a horizontal slider 28 is horizontally slidably connected in the horizontal transverse groove 30. A circular ring 26 is fixedly connected to the top of the horizontal slider 28. A spring 27 is elastically connected between the circular ring 26 and the circular plate 24. The spring 27 is sleeved on the outside of the threaded protrusion 25. A threaded groove is provided on the inner wall of the circular ring 26, and it can be threadedly connected to the threaded protrusion 25. The aperture of the circular ring 26 is larger than the cross-sectional diameter of the movable rod 21, so as not to affect the normal sliding of the movable rod 21.

[0047] The implementation principle of a cave surrounding rock deformation and failure simulation test system in the embodiment of the present application is:

[0048] By using the cylinders at the movable block 2 18 and the movable block 1 17, the movable block 1 17 drives the movable rod 21 to move to the place where the surrounding rock deformation and failure simulation is required, and then the hydraulic rod 5 can be started to push the pressure plate 4, and the movable rod 21 is pushed to move vertically under the sliding contact between the pressure plate 4 and the circular plate 24. When the movable rod 21 is subjected to the downward displacement, it will enter the spiral groove 23 under the vertical sliding guidance of the circular block 20 and the vertical groove 22, and drive the movable rod 21 to rotate and descend. At the same time, the threaded protrusion 25 will be threadedly connected with the inner wall of the circular ring 26, so that when the movable rod 21 is vertically descended and pressure is applied, the circular ring 26 will maintain a relatively unchanged vertical position under the threaded connection of the threaded protrusion 25; when a single simulation test is completed, the hydraulic rod 5 is driven to drive the pressure plate 4 to return to its position. At this time, the circular plate 24 will pull the movable rod 21 connected to it for rotation to return to its position under the elasticity of the spring 2 27, and collect the data at the pressure sensor and send it to the terminal for analysis.

[0049] Embodiment 2:

[0050] Combination Figure 1-Figure 3 and Figure 6 Based on Example 1, this embodiment is further improved in that:

[0051] The receiving mechanism includes slide bars 7 evenly arranged around the mechanism frame 2, one group of slide bars 7 is symmetrically arranged at the top of the mechanism frame 2, and is horizontally slidably connected to a moving block 18. Cylinders are provided in the two groups of moving blocks 18 for single horizontal displacement, and the middle parts of the two groups of moving blocks 18 are fixedly connected to a guide rod 15, and the outer wall of the guide rod 15 slides horizontally with the bottom end of the moving block 17 to realize the specified movement of the moving block 17 at the top of the mechanism frame 2.

[0052] The contact assembly includes two groups of slide plates 8, which can slide horizontally relative to the slide bar 7, and the tops of the two groups of slide plates 8 are provided with vertical grooves, and vertical sliders 14 are slidably connected in the vertical grooves. The outer sides of the two groups of vertical sliders 14 are fixedly connected with inclined plates 13, and the bottom ends of the two groups of inclined plates 13 are provided with inclined groove openings.

[0053] Slide rods 12 are slidably connected in the two groups of inclined grooves, and the bottom ends of the two groups of slide rods 12 are fixedly connected to the outer plate 10, and multiple groups of contact rods 9 are evenly fixedly connected to the inner side of the outer plate 10, and the multiple groups of contact rods 9 are horizontally slidably connected to the slide plate 8, and sliding holes are provided at the sliding positions of the slide plate 8 and the contact rods 9.

[0054] There are multiple groups of springs 11 elastically connected between the slide plate 8 and the outer plate 10, wherein the multiple groups of springs 11 are all sleeved on the outside of the contact rod 9 to drive the two groups of outer plates 10 to move inward synchronously to contact and abut the experimental material 6, wherein pressure sensors are arranged at the contact rod 9.

[0055] The tops of the two groups of vertical slide blocks 14 are respectively fixedly connected to the two ends of the limiting plate 1 29 and the limiting plate 2 31 to synchronously drive the two groups of contact components to operate.

[0056] The inner sides of the two groups of slide plates 8 are fixedly connected to the outer sides of the moving block 2 18 and the guide rod 15 respectively for synchronous horizontal displacement to ensure that the simulated pressure points and the two groups of contact components are in different vertical planes, and the stress and strain data at different position spacings can be collected.

[0057] The implementation principle of a cave surrounding rock deformation and failure simulation test system in the embodiment of the present application is:

[0058] When the pressure plate 4 is pressed down, the limit plate 1 29 and the limit plate 2 31 will slide vertically downward under the push of the spring 2 27 in the early stage, thereby pressing down the vertical sliders 14 on both sides, and utilizing the sliding contact between the vertical sliders 14 and the inclined plate 13 to achieve the synchronous inward sliding of the two groups of symmetrically arranged outer plates 10, and to achieve the pushing of multiple groups of contact rods 9 to contact the outer wall of the experimental material 6; when the pressure plate 4 is continuously pressed down, due to the resistance generated by multiple groups of springs 1 11 and springs 2 27 at the same time, and the spiral groove 23 is slidably connected to the round block 20, and the threaded protrusion 25 is also threadedly connected to the inner wall of the circular ring 2 26, so that under the threaded connection between the threaded protrusion 25 and the circular ring 2 26, it is ensured that the circular ring 2 26 will not undergo vertical displacement changes until a single simulation test is completed. After the circular plate 24 loses pressure, it can return to its original position under the cooperation of multiple groups of springs.

[0059] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A cavern surrounding rock deformation and failure simulation test system, comprising: A test bench, wherein a mechanism frame is fixed on the top of the test bench, and a tempered glass is fixed on the outside of the mechanism frame, and one side of the tempered glass is hinged; It is characterized by further comprising: A pressing plate, the pressing plate is vertically movable in the tempered glass, and two groups of hydraulic rods are symmetrically fixedly connected to the top of the pressing plate, and cross bars are fixed to the tops of the two groups of hydraulic rods, and the cross bars are fixed to the test bench; Experimental materials, the experimental materials are placed in the middle of the top of the mechanism frame; A receiving mechanism, which is installed around the mechanism frame and includes two groups of contact components, and the two groups of contact components are symmetrically arranged; A simulation mechanism is arranged at the bottom end of the pressure plate, including a circular plate, the top end of the circular plate is slidably abutted against the pressure plate, the bottom end of the circular plate is rotatably connected to a movable rod, the upper outer wall of the movable rod is provided with a threaded protrusion, and the lower outer wall of the movable rod is provided with a spiral groove, the threaded protrusion and the spiral groove are arranged in opposite directions to keep the contact component stable when increasing the simulation force.

2. A cavern surrounding rock deformation and failure simulation test system as claimed in claim 1, characterized in that: The simulation mechanism also includes a limit plate 2 and a limit plate 1 which are slidably connected to the movable rod from top to bottom in sequence. The middle parts of the limit plate 2 and the limit plate 1 are provided with sliding grooves to accommodate the sliding of the movable rod, and the limit plate 1 and the limit plate 2 are arranged perpendicular to each other. Contact components are connected to both sides of the limit plate 1 and the limit plate 2 for comparative collection of simulation experiment data.

3. A cavern surrounding rock deformation and failure simulation test system as claimed in claim 2, characterized in that: A vertical groove is provided on the outer wall of the lower part of the movable rod, and the vertical groove is connected with the bottom end of the spiral groove. A round block is slidably connected to the vertical groove and the spiral groove. A circular ring is fixedly connected to the outer side of the circular block. A movable block is fixedly connected to the bottom end of the circular ring. A sleeve is symmetrically fixedly connected to the top of the movable block. A pressure sensor is provided at the bottom of the movable rod, and a cylinder is built into the movable block to drive the movable block to move in a single horizontal direction.

4. A cavern surrounding rock deformation and failure simulation test system as claimed in claim 2, characterized in that: A horizontal groove is provided on the top of the limiting plate 1, a horizontal slider is horizontally slidably connected in the horizontal groove, a circular ring 2 is fixedly connected to the top of the horizontal slider, a spring 2 is elastically connected between the circular ring 2 and the circular plate, the spring 2 is sleeved on the outside of the threaded protrusion, a thread groove is provided on the inner wall of the circular ring 2, and the spring can be threadedly connected to the threaded protrusion, wherein the aperture of the circular ring 2 is larger than the cross-sectional diameter of the movable rod.

5. The cavern surrounding rock deformation and failure simulation test system according to claim 1, characterized in that: The receiving mechanism includes sliding bars evenly arranged around the mechanism frame, one group of sliding bars is symmetrically arranged at the top of the mechanism frame and is horizontally slidably connected to a moving block 2, two groups of moving blocks 2 are each provided with a cylinder for performing a single horizontal direction displacement, and the middle parts of the two groups of moving blocks 2 are fixedly connected to a guide rod, and the outer wall of the guide rod slides horizontally with the bottom end of the moving block 1 to realize the specified movement of the moving block 1 at the top of the mechanism frame.

6. A cavern surrounding rock deformation and failure simulation test system as claimed in claim 2, characterized in that: The contact assembly includes two groups of slides, and the two groups of slides can slide horizontally relative to the slide bar. The tops of the two groups of slides are provided with vertical grooves, and vertical sliders are slidably connected in the vertical grooves. The outer sides of the two groups of vertical sliders are fixedly connected with inclined plates, and the bottom ends of the two groups of inclined plates are provided with inclined groove openings.

7. A cavern surrounding rock deformation and failure simulation test system as claimed in claim 6, characterized in that: The two groups of inclined grooves are slidably connected with sliding rods, and the bottom ends of the two groups of sliding rods are fixedly connected with outer plates, and multiple groups of contact rods are evenly fixedly connected to the inner sides of the outer plates. The multiple groups of contact rods are horizontally slidably connected with the slide plate, and sliding holes are provided at the sliding positions of the slide plate and the contact rods.

8. The cavern surrounding rock deformation and failure simulation test system according to claim 6, characterized in that: The slide plate and the outer plate are elastically connected with multiple groups of springs, wherein the multiple groups of springs are sleeved on the outside of the contact rod to drive the two groups of outer plates to move inward synchronously to contact and abut the experimental materials, wherein pressure sensors are arranged at the contact rods.

9. A cavern surrounding rock deformation and failure simulation test system as claimed in claim 6, characterized in that: The tops of the two groups of vertical sliding blocks are respectively fixedly connected to the two ends of the limiting plate 1 and the limiting plate 2, so as to synchronously drive the two groups of contact components to operate.

10. A cavern surrounding rock deformation and failure simulation test system as claimed in claim 8, characterized in that: The inner sides of the two groups of slides are fixedly connected to the outer sides of the moving block 2 and the guide rod respectively for synchronous horizontal displacement, ensuring that the simulated pressure points and the two groups of contact components are in different vertical planes, and the stress and strain data at different position spacings can be collected.

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