Rock rounding mechanical test device and test method

Abstract

The invention discloses a rock rounding mechanical test device and a test method, the rock rounding mechanical test device comprises a base, a top seat, an upper support plate and a lower support plate, the top seat is arranged right above the base, the upper support plate and the lower support plate are located between the base and the top seat, the lower support plate can be adjusted in a lifting manner relative to the base, and the top seat is arranged right above the base. The upper supporting plate can horizontally slide relative to the top seat; the upper supporting plate is located above the lower supporting plate, a lower friction plate is arranged on the upper side of the lower supporting plate, an upper friction plate is arranged on the lower side of the upper supporting plate, the lower friction plate and the upper friction plate are used for abutting against rock particles up and down, and a friction test is conducted on the rock particles through sliding in the horizontal direction. By controlling different loads and friction states, gravels with different roundness are simulated, the change rule of the sliding distance of a fault and the extrusion force between sliding layers is researched, and a supporting effect is achieved on correct understanding of part of geological disasters.

Description

Technical Field

[0001] The present invention relates to the technical field of rock testing, and more specifically, to a rock rounding mechanics testing device and a rock rounding mechanics testing method. Background Art

[0002] There is a close relationship between rock masses and faults, which together make up the geological structures of the Earth. Faults are cracks in the Earth's crust that form when rocks are displaced along these cracks. This displacement can cause relative movement between adjacent rock masses, changing the relative positions of the formations. The stresses and displacements caused by faults can change the properties of the rocks.

[0003] A slip fault is a specific type of fault characterized by relative sliding of two strata along the fault plane. This sliding can be horizontal, vertical or oblique, depending on the direction of relative displacement of the strata. Under the action of tectonic forces and gravity, different types of rocks at the fault respond differently. Some rocks may be squeezed and folded at the fault, while some rocks may break and slide, forming small-grained gravel, which is then kneaded into oval or round gravel under long-term squeezing and sliding.

[0004] When studying faults, researchers usually test the rock mass of the fault directly, but ignore the study of the gravel between the rock masses. Currently, there is no test equipment that can simulate the gravel of the fault, so it is impossible to conduct in-depth research on the gravel in the fault.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a rock rounding mechanics test device that can simulate the friction and compression state at a rock fault.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a rock grinding rounding mechanical testing device, comprising a base, a top seat, an upper support plate and a lower support plate, the top seat is arranged directly above the base, the upper support plate and the lower support plate are located between the base and the top seat, the lower support plate can be raised and lowered relative to the base, and the upper support plate can slide horizontally relative to the top seat; the upper support plate is located above the lower support plate, a lower friction plate is arranged on the upper side of the lower support plate, and an upper friction plate is arranged on the lower side of the upper support plate, the lower friction plate and the upper friction plate are used to resist rock particles up and down, and perform friction test on rock particles through horizontal sliding.

[0008] The present invention is further configured such that a guide rod is fixedly connected to the outer periphery of the lower support plate, and the guide rod is slidably connected to the base for slidingly guiding the lower support plate.

[0009] The present invention is further configured such that the base is provided with a lifting device, the lifting device includes a lifting end that can be raised and lowered and adjusted, the lifting end is used to drive the lower support plate to rise and fall, and a pressure sensor is provided between the lifting end and the lower support plate.

[0010] The present invention is further configured as follows: a slide rail 1 is provided at the lower portion of the top seat, the slide rail 1 is slidably connected to a slide seat 1, and the slide seat 1 is driven to slide by a driver 1; a slide rail 2 is provided at the lower portion of the slide seat 1, the slide rail 2 is slidably connected to a slide seat 2, and the slide seat 2 is driven to slide by a driver 2; the upper support plate is fixedly connected to the lower portion of the slide seat 2; the directions of the slide rail 1 and the slide rail 2 are both horizontal and perpendicular to each other.

[0011] The present invention is further configured such that an enclosure mechanism is provided between the lower friction plate and the upper friction plate, the enclosure mechanism forms an enclosed space, and the enclosed space is used to accommodate rock particles to be subjected to friction testing.

[0012] The present invention is further configured such that the enclosure mechanism includes a movable enclosure and a fixed enclosure, the movable enclosure is a U-shaped structure, including two straight portions and an arc portion, the two straight portions are arranged in parallel, the arc portion is solidly connected to one end of the two straight portions, and the other ends of the two straight portions are open; the fixed enclosure is located between the two straight portions, and an enclosed space is formed between the fixed enclosure, the two straight portions and the arc portion;

[0013] The present invention is further configured such that sliding blocks are provided at both ends of the fixed enclosure, the two sliding blocks are slidably connected to the two straight portions respectively, the movable enclosure can be slidably adjusted relative to the fixed enclosure, and the size of the enclosed space can be adjusted.

[0014] The present invention is further configured such that a stop block is provided between the two straight portions of the movable enclosure, the stop block is fixedly connected to the straight portion and can be adjusted along the length direction of the straight portion; a linkage block is fixedly connected to the lower portion of the upper friction plate, the linkage block is used to link with the stop block, to resist against the stop block, and to drive the movable enclosure to move, so that the enclosed space can be adjusted.

[0015] The present invention is further configured such that the linkage blocks are provided with two blocks, and the two linkage blocks are respectively located on both sides of the stopper. When the two linkage blocks follow the movement of the upper support plate, they can respectively press and push from both sides of the stopper to expand or reduce the enclosed space.

[0016] The present invention is further configured such that the straight portion is provided with a through slot, the through slot is in a strip-shaped structure and is arranged along the length direction of the straight portion, the end of the block is fixedly connected with a connecting portion, the connecting portion is fixedly connected with a screw rod, the screw rod passes through the through slot, and is locked and fixed by a nut.

[0017] The present invention is further configured as follows: the fixed enclosure is connected to the lower support plate, a rotating device is installed at the lower part of the lower support plate, the rotating device is provided with a rotating shaft, the rotating shaft passes through the lower support plate and the lower friction plate, and is fixedly connected to the middle of the lower side of the fixed enclosure, the rotating device can drive the fixed enclosure to rotate horizontally; the outer side of the movable enclosure is fixedly connected with a sliding seat, the lower part of the sliding seat is provided with a ball bearing, and can slide horizontally relative to the friction plate.

[0018] The present invention also provides a rock rounding mechanical test method, which uses the test device as mentioned above to conduct the test; during the test, the rock particles with the test are placed between the lower friction plate and the upper friction plate, the upper friction plate, the rock particles and the lower friction plate are abutted against each other, and the upper support plate slides horizontally relative to the lower support plate to conduct a friction test on the rock particles.

[0019] In summary, the present invention has the following beneficial effects:

[0020] The rock particles are loaded up and down by the upper friction plate and the lower friction plate, and the upper friction plate is moved and adjusted so that the rock particles between the upper friction plate and the lower friction plate can simulate the displacement friction state similar to that in the fault. By conducting simulation tests on rock particles and recording the pressure load and motion trajectory length applied during the test, the slip distance at the fault in the natural environment and the law of extrusion change at the fault can be roughly obtained, and the approximate state of the fault can also be reversely deduced, and the approximate formation time of the fault and the degree of activity of the slip movement can be deduced. In addition, by continuously conducting wear tests on rock particles, the subsequent change state of the rock at the fault can be further deduced, and then the law of change of fault sliding distance and extrusion pressure between sliding layers can be studied. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of a rock grinding mechanics test device in this embodiment;

[0022] Figure 2 is a cross-sectional view of a rock grinding mechanics test device in this embodiment;

[0023] Figure 3 The structure between the upper support plate and the lower support plate in this embodiment is shown in FIG. Figure 1 ;

[0024] Figure 4The structure of the enclosure mechanism in this embodiment is shown in FIG. Figure 1 ;

[0025] Figure 5 The structure between the upper support plate and the lower support plate in this embodiment is shown in FIG. Figure 2 ;

[0026] Figure 6 The structure of the enclosure mechanism in this embodiment is shown in FIG. Figure 2 ;

[0027] Figure 7 Schematic diagram of the initial state of rock particles between faults;

[0028] Figure 8 Schematic diagram of the state of rock particles between faults after wear.

[0029] 1. Base; 2. Top seat; 3. Lower support plate; 31. Lower friction plate; 4. Guide rod; 5. Lifting device; 6. Lifting end; 7. Pressure sensor; 8. Slide rail 1; 9. Slide seat 1; 10. Driver 1; 11. Slide seat 2; 12. Slide rail 2; 13. Driver 2; 14. Upper support plate; 141. Upper friction plate; 15. Movable enclosure; 151. Straight portion; 152. Arc portion; 153. Enclosed space; 154. Opening; 155. Through groove; 16. Fixed enclosure; 161. Sliding block; 162. Recessed portion; 17. Stop block; 171. Connecting portion; 172. Screw rod; 173. Nut; 18. Sliding seat; 19. Rotating device; 191. Rotating shaft; 20. Make way groove; 21. Linkage block; 30. Rock mass; 31. Fault; 32. Rock particles. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1

[0032] This embodiment discloses a rock rounding mechanical test device, referring to Figure 1-Figure 3As shown, it includes a base 1, a top seat 2, an upper support plate 14 and a lower support plate 3. The top seat 2 is arranged directly above the base 1; the upper support plate 14 and the lower support plate 3 are located between the base 1 and the top seat 2, and are arranged parallel to each other in an upper and lower direction; the lower support plate 3 can be raised and lowered relative to the base 1. After rising, the distance between the lower support plate 3 and the upper support plate 14 will be expanded, and after falling, the distance between the lower support plate 3 and the upper support plate 14 will be reduced. The upper support plate 14 can slide horizontally relative to the top seat 2, and can be driven by a driver.

[0033] A lower friction plate 31 is arranged on the upper side of the lower support plate 3, and an upper friction plate 141 is arranged on the lower side of the upper support plate 14. During the test, rock particles are placed on the lower friction plate 31; the lower support plate 3 rises, so that the upper friction plate 141 can contact the upper part of the rock particles, and then the lower friction plate 31 and the upper friction plate 141 can push against the rock particles up and down. Then, by controlling the upper support plate 14 to move horizontally, the upper support plate 14 will drive the upper friction plate 141 to move synchronously, and the rock particles will realize the friction test between the upper friction plate 141 and the lower friction plate 31.

[0034] The rock is squeezed and rubbed by the upper friction plate 141 and the lower friction plate 31, thereby simulating the wear movement of the crushed stone in the rock fault. Since the upper friction plate 141 and the lower friction plate 31 are directly pressed and contacted with the rock particles, the material of the upper friction plate 141 and the lower friction plate 31 can be natural rocks at the simulated friction site, or artificial rock samples, simulating the two side walls of the fault in nature. And the surface shape and state of the upper friction plate 141 and the lower friction plate 31 can be adaptively adjusted so that it can simulate the state of the fault as much as possible.

[0035] In order to maintain the lifting stability of the lower support plate 3, a guide rod 4 can be fixedly connected to the outer periphery of the lower support plate 3, and the guide rod 4 is slidably connected to the base 1, and the lower support plate 3 can be slidably guided by the guide rod 4. A lifting device 5 is installed on the base 1, and the lifting device 5 includes a lifting end 6 that can be lifted and lowered. The lifting end 6 can drive the lower support plate 3 to lift and lower, and play a role in lifting and lowering the lower support plate 3 and the lower friction plate 31. In addition, a pressure sensor 7 is arranged between the lifting end 6 and the lower support plate 3. Specifically, the pressure sensor 7 is installed at the upper end of the lifting end 6, and the lower support plate 3 is pressed and installed on the upper part of the pressure sensor 7. The upper end surfaces of the lower support plate 3, the pressure sensor 7 and the lifting end 6 are in a state of being pressed against each other in sequence, and then the load pressure between the upper friction plate 141 and the lower friction plate 31 can be detected by the pressure sensor 7.

[0036] For the sliding of the upper support plate 14, two sets of slide rails can be used for guidance, so as to simulate the motion state of the upper friction plate 141. Specifically, a slide rail 8 is provided at the lower part of the top seat 2, and the slide rail 8 is slidably connected to a slide seat 9, and the slide seat 9 is driven to slide by a driver 10. The driver 10 can adopt a screw nut 173 structure and be controlled by a servo motor. In addition, a slide rail 2 12 is provided at the lower part of the slide seat 9, and the slide rail 2 12 is slidably connected to a slide seat 11, and the slide seat 11 is driven to slide by a driver 2 13. The driver 2 13 can also adopt a screw nut 173 structure and be controlled by a servo motor. The upper support plate 14 is fixedly connected to the lower part of the slide seat 11, and the directions of the slide rails 18 and 12 are both horizontal and perpendicular to each other. By simulating the parameters in the X and Y directions through two sets of servo motors, the upper support plate 14 can be controlled to move in various directions on the horizontal plane. For example, the upper support plate 14 can move back and forth in a single direction or move in a circular motion on the horizontal plane. Moreover, since the movement of the upper support plate 14 is controlled by the servo motor, the movement stroke of the upper support plate 14 relative to the lower support plate 3 can also be obtained, and then the length of the relative sliding path between the upper friction plate 141 and the lower friction plate 31 can also be obtained.

[0037] The present embodiment discloses a rock grinding mechanics test method, which uses a test device as in the above embodiment. During the test, the rock particles with the test are placed between the lower friction plate 31 and the upper friction plate 141. The upper friction plate 141, the rock particles and the lower friction plate 31 are abutted against each other, and the upper support plate 14 slides horizontally relative to the lower support plate 3 to perform a friction test on the rock particles.

[0038] During the test, the rock samples at the fault are removed, the rock samples are broken to form rock particles, the broken rock particles are taken, and the rock particles are placed between the upper friction plate 141 and the lower friction plate 31, the lower friction plate 31 moves upward, the upper friction plate 141, the rock particles and the lower friction plate 31 are against each other, and have a certain pressure load; the driver 10 and the driver 2 13 work to drive the upper friction plate 141 to move according to the preset motion trajectory, and the upper friction plate 141 and the lower friction plate 31 will perform a friction test on the rock particles. During the friction test, the rock particles will gradually wear from an angular state to a state with rounded corners and relatively smooth. During the friction test, the rock particles of the friction test are compared with the natural gravel particles at the fault until the degree of wear of the rock particles of the friction test is consistent with the degree of wear of the natural gravel particles at the fault.

[0039] During the wear test, the pressure load applied between the upper friction plate 141 and the lower friction plate 31 is recorded, and the stress at the fault is simulated by the pressure. The length of the relative sliding path between the upper friction plate 141 and the lower friction plate 31 is recorded, and the relative sliding distance at the fault is simulated by the length. Through the pressure load and the length of the motion trajectory, the approximate state of the fault can be reversely deduced, and the approximate formation time of the fault and the activeness of the slip movement can be deduced.

[0040] Friction tests can be continued to further wear the rock particles, and the subsequent change state of the rock at the fault can be further deduced, thereby studying the change pattern of the fault sliding distance and the extrusion pressure between sliding layers.

[0041] Embodiment 2

[0042] This embodiment discloses a rock grinding mechanical test device. Figure 3-Figure 6 As shown in the figure, a detailed description is given, in which the structure between the lower friction plate 31 and the upper friction plate 141 is optimized and designed so that the rock particles can be more stably confined between the two friction plates, thereby maintaining the stability of the friction test.

[0043] An enclosure mechanism is provided between the lower friction plate 31 and the upper friction plate 141, and the enclosure mechanism forms an enclosure space 153, and the enclosure space 153 can accommodate rock particles to be subjected to friction test. The rock particles can fall within the range of the enclosure space 153, and each rock particle is in a relatively gathered state. During the friction process, the rock particles are not only subjected to friction by the upper friction plate 141 and the lower friction plate 31, but also to mutual friction between the rock particles. The friction state in nature is simulated by multiple rock particles together, so that the test results are more accurate.

[0044] Specifically, refer to Figure 3 , Figure 4 As shown, the enclosure mechanism includes a movable enclosure 15 and a fixed enclosure 16. The movable enclosure 15 is a U-shaped structure, including two straight portions 151 and an arc portion 152. The two straight portions 151 are arranged in parallel, and the arc portion 152 is solidly connected to one end of the two straight portions 151, and the other end of the two straight portions 151 forms an opening 154. The fixed enclosure 16 is located between the two straight portions 151, and an enclosed space 153 is formed between the fixed enclosure 16, the two straight portions 151 and the arc portion 152. In addition, the fixed enclosure 16 is connected to the lower support plate 3 and can remain fixed, while the movable enclosure 15 can slide relative to the fixed enclosure 16 to form a movable state.

[0045] Slide blocks 161 are provided at both ends of the fixed enclosure 16, and the two slide blocks 161 are respectively slidably connected to the two straight portions 151, so that the movable enclosure 15 can be slidably adjusted relative to the fixed enclosure 16, and the size of the enclosed space 153 can be adjusted by sliding the movable enclosure 15. A sliding seat 18 can be fixedly connected to the outer side of the movable enclosure 15, and a ball bearing is provided at the lower part of the sliding seat 18, and the ball bearing and the lower friction plate 31 are pressed against each other to realize rolling and sliding, so that the sliding seat 18 and the movable enclosure 15 can smoothly slide in the horizontal direction on the lower friction plate 31.

[0046] Moreover, during the friction test, the upper sides of the movable enclosure 15 and the fixed enclosure 16 do not contact the upper friction plate 141, so as to avoid contact friction and unnecessary wear.

[0047] Furthermore, a stopper 17 is provided between the two straight portions 151 of the movable enclosure 15, the stopper 17 is fixedly connected to the straight portion 151, and can be adjusted along the length direction of the straight portion 151. Moreover, a linkage block 21 is fixedly connected to the lower portion of the upper friction plate 141, and the linkage block 21 can be linked with the stopper 17. During the movement of the upper support plate 14, the linkage block 21 will move synchronously with the upper support block, and can abut against the stopper 17, and drive the movable enclosure 15 to move. During the process of driving the movable enclosure 15 to move, the linkage block 21 will drive the size adjustment of the enclosed space 153.

[0048] Reference Figure 4 As shown, there are two linkage blocks 21, and the two linkage blocks 21 are respectively located on both sides of the stopper. When the two linkage blocks follow the upper support plate 14 to move, they can be pushed from both sides of the stopper 17. When the linkage block 21 moves toward the left direction, the linkage block 21 on the right side will be against the stopper 17, pushing the stopper 17 and the movable enclosure 15 to move to the left direction, and the enclosed space 153 will gradually expand. After the enclosed space 153 is expanded, the rock particles in the enclosed space 153 will be loosened to a certain extent, and the mutual extrusion and wear between the rock particles will be reduced. In addition, the positions between the rock particles are also easier to rearrange, avoiding excessive wear of the rock particles under the condition of long-term mutual extrusion, which causes excessive wear errors.

[0049] When the partner linkage block 21 moves toward the right, the linkage block 21 on the left side will abut against the block 17, pushing the block 17 and the movable enclosure 15 to move toward the right, and the enclosed space 153 will gradually shrink. In the process of shrinking the enclosed space 153, the arc portion 152 of the movable enclosure 15 will push the rock particles to gather together and move toward the direction close to the fixed enclosure 16. After the rock particles gather together, it can simulate the state of contact and wear between the rock particles in the aggregated state.

[0050] During the friction test, the rock particles can be switched between relatively loose and relatively concentrated states, and the friction test can be carried out under different environmental conditions, so that the loss error of the rock particles can be in a relatively stable and centered state. Moreover, since there is a certain distance between the two linkage blocks 21, the linkage blocks 21 have two relatively stable steady states between the movement of shrinking and / or expanding the annular space during the movement, so that the rock friction can be more accurate and reliable.

[0051] During the friction test, the upper support plate 14 generally moves along a circular moving track, and the stopper 17 passes through the center of the circular moving track. In addition, the vertical distances between the two linkage blocks 21 and the stopper 17 are equal. During the movement of the linkage blocks 21 driven by the upper support plate 14, the time of expansion and contraction of the enclosed space 153 will be roughly shifted, thereby ensuring the stability of the rock particle friction test and avoiding excessive error fluctuations.

[0052] The position of the stopper 17 can be adjusted along the straight portion 151. Specifically, a through slot 155 is provided in the straight portion 151. The through slot 155 is in a strip-shaped structure and is arranged along the length direction of the straight portion 151. A connecting portion 171 is fixedly connected to the end of the stopper 17. The connecting portion 171 is fixedly connected to a screw rod 172. The screw rod 172 passes through the through slot 155 and is locked and fixed by a nut 173.

[0053] Further, based on the above embodiments, Figure 5 , Figure 6 Further design is carried out to further optimize the structure of the enclosure mechanism.

[0054] In this embodiment, the fixed enclosure 16 is connected to the lower support plate 3, and the two are not fixedly connected, but are rotatably connected. A rotating device 19 is installed at the lower part of the lower support plate 3, and a clearance groove 20 is provided at the lower part of the lower support plate 3, and the rotating device 19 is embedded therein. The rotating device 19 is provided with a rotating shaft 191, which is vertically upward and passes through the holes of the lower support plate 3 and the lower friction plate 31. The rotating shaft 191 passes through the lower support plate 3 and the lower friction plate 31, and the upper end of the rotating shaft 191 is fixedly connected to the middle of the lower side of the fixed enclosure 16. By rotating the rotating shaft 191 of the rotating device 19, the fixed enclosure 16 can be driven to rotate horizontally and adjust.

[0055] The fixed enclosure 16 is rotated and adjusted by the rotating device, and the fixed enclosure 16 will drive the movable enclosure 15 to rotate together, thereby making the entire enclosure mechanism active. During the activity of the enclosure mechanism, the position between the enclosure mechanism and the lower friction plate 31 will also change, and the enclosure mechanism will drive the rock pressure inside to move on the lower friction plate 31, which can adjust the position of the rock particles in the enclosed space 153, and prevent the rock particles from rubbing against the same position of the lower friction plate 31 for a long time.

[0056] Furthermore, in the enclosure mechanism, a recessed portion 162 is formed on the side of the fixed enclosure 16 facing the enclosure space, and the recessed contour of the recessed portion 162 is in an arc-shaped state, which is consistent with the inner shape of the arc-shaped portion 152, so that the enclosure space can form a state close to a circle when it is in a reduced state, so that the side walls of the enclosure space that the rock particles distributed at the peripheral position contact have a roughly arc-shaped structure, so that during the test, the friction adjustment of the rock particles at various positions is closer.

[0057] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rock rounding mechanical testing device, characterized in that: The invention comprises a base (1), a top seat (2), an upper support plate (14) and a lower support plate (3); the top seat (2) is arranged directly above the base (1); the upper support plate (14) and the lower support plate (3) are located between the base (1) and the top seat (2); the lower support plate (3) can be raised and lowered relative to the base (1); and the upper support plate (14) can slide horizontally relative to the top seat (2); the upper support plate (14) is located above the lower support plate (3); a lower friction plate (31) is arranged on the upper side of the lower support plate (3); and an upper friction plate (141) is arranged on the lower side of the upper support plate (14); the lower friction plate (31) and the upper friction plate (141) are used to abut against rock particles up and down, and to perform a friction test on the rock particles by sliding in the horizontal direction.

2. A rock rounding mechanical testing device according to claim 1, characterized in that: A guide rod (4) is fixedly connected to the outer periphery of the lower support plate (3); the guide rod (4) is slidably connected to the base (1) and is used to slide and guide the lower support plate (3).

3. A rock grinding mechanics test device according to claim 1, characterized in that: The base (1) is provided with a lifting device (5), the lifting device (5) comprises a lifting end (6) capable of being raised and lowered, the lifting end (6) is used to drive the lower support plate (3) to rise and fall, and a pressure sensor (7) is provided between the lifting end (6) and the lower support plate (3).

4. A rock rounding mechanical testing device according to claim 1, characterized in that: The lower part of the top seat (2) is provided with a slide rail 1 (8), the slide rail 1 (8) is slidably connected to a slide seat 1 (9), and the slide seat 1 (9) is driven to slide by a driver 1 (10); the lower part of the slide seat 1 (9) is provided with a slide rail 2 (12), the slide rail 2 (12) is slidably connected to a slide seat 2 (11), and the slide seat 2 (11) is driven to slide by a driver 2 (13); the upper support plate (14) is fixedly connected to the lower part of the slide seat 2 (11); the directions of the slide rail 1 (8) and the slide rail 2 (12) are both horizontal and perpendicular to each other.

5. A rock rounding mechanical testing device according to claim 1, characterized in that: An enclosure mechanism is provided between the lower friction plate (31) and the upper friction plate (141), and the enclosure mechanism forms an enclosed space (153). The enclosed space (153) is used to accommodate rock particles to be subjected to a friction test.

6. A rock rounding mechanical testing device according to claim 5, characterized in that: The enclosure mechanism comprises a movable enclosure (15) and a fixed enclosure (16); the movable enclosure (15) is in a U-shaped structure, comprising two straight portions (151) and an arcuate portion (152); the two straight portions (151) are arranged in parallel, the arcuate portion (152) is solidly connected to one end of the two straight portions (151), and the other end of the two straight portions (151) forms an opening (154); the fixed enclosure (16) is located between the two straight portions (151), and an enclosed space (153) is formed between the fixed enclosure (16), the two straight portions (151) and the arcuate portion (152); sliders (161) are arranged at both ends of the fixed enclosure (16), and the two sliders (161) are respectively slidably connected to the two straight portions (151); the movable enclosure (15) can be slidably adjusted relative to the fixed enclosure (16), and the size of the enclosed space (153) can be adjusted.

7. A rock rounding mechanical testing device according to claim 6, characterized in that: A stopper (17) is provided between the two straight portions (151) of the movable enclosure (15); the stopper (17) is fixedly connected to the straight portion (151) and can be adjusted along the length direction of the straight portion (151); a linkage block (21) is fixedly connected to the lower portion of the upper friction plate (141); the linkage block (21) is used to be linked with the stopper (17), to abut against the stopper (17), and to drive the movable enclosure (15) to move, so that the enclosed space (153) can be adjusted.

8. A rock rounding mechanical testing device according to claim 7, characterized in that: The linkage blocks (21) are provided in two pieces, and the two linkage blocks (21) are respectively located on both sides of the stopper. When the two linkage blocks follow the movement of the upper support plate (14), they can respectively press and push from both sides of the stopper (17) to expand or reduce the enclosed space (153).

9. A rock rounding mechanical testing device according to claim 6, characterized in that: The fixed enclosure (16) is connected to the lower support plate (3), and a rotating device (19) is installed at the lower part of the lower support plate (3). The rotating device (19) is provided with a rotating shaft (191). The rotating shaft (191) passes through the lower support plate (3) and the lower friction plate (31), and is fixedly connected to the middle of the lower side of the fixed enclosure (16). The rotating device (19) can drive the fixed enclosure (16) to rotate horizontally; the outer side of the movable enclosure (15) is fixedly connected with a sliding seat, and a ball bearing is provided at the lower part of the sliding seat, and can slide horizontally relative to the friction plate.

10. A rock rounding mechanical test method, characterized in that: The test is carried out using the test device as described in any one of claims 1 to 9; during the test, the rock particles to be tested are placed between the lower friction plate (31) and the upper friction plate (141), the upper friction plate (141), the rock particles and the lower friction plate (31) are abutted against each other, and the upper support plate (14) slides horizontally relative to the lower support plate (3) to carry out a friction test on the rock particles.

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