Shear test system for slip-type rock burst under dynamic disturbance

Abstract

The present application relates to the technical field of rock mechanics test, and discloses a sliding type rock burst shearing test system under the action of dynamic disturbance, which comprises a frame body, a base fixed at the bottom of the frame body, a sliding groove formed in the frame body, a workbench slidingly arranged in the sliding groove, a connecting assembly arranged on the frame body and used for connecting the workbench, a mounting block fixed in the frame body and arranged above the workbench, a loading block slidingly arranged between the mounting block and the workbench, a hydraulic cylinder with piston ends fixed on the loading block and arranged at the two ends of the mounting block close to the loading block, a mounting frame fixed in the frame body and arranged between the workbench and the loading block, the mounting frame being arranged in a staggered manner with the loading block, and a scraper slidingly arranged in the mounting frame. The present application can perform mechanical test on rock mass, clean and collect the broken rock mass in the equipment, has high working performance, can perform closed dust reduction treatment on the dust of the rock mass, avoids the influence of dust diffusion on the surrounding equipment, and has high protection performance.

Description

Technical Field

[0001] This invention relates to the field of rock mechanics testing technology, and in particular to a sliding rockburst shear testing system under dynamic disturbance. Background Technology

[0002] Slippage-type rockburst refers to the rockburst phenomenon caused by the slippage and failure of rock mass structural surfaces.

[0003] A patent application with application number CN2018115694719 and publication date of 2020-10-13 discloses a sliding rockburst shear test system under dynamic disturbance. The system is characterized by comprising: a shear box component; a vertical loading device for applying a vertical load to the sample, including: an electromagnetic vibrator for applying the excitation load and a vertical dynamic pressure sensor disposed at the end of the electromagnetic vibrator; a horizontal loading device including: a horizontal loader and a horizontal pressure sensor disposed at the end of the horizontal loader; a data acquisition unit including: a dynamic displacement sensor disposed on the electromagnetic vibrator, a horizontal displacement sensor disposed on the horizontal loader, a distributed fiber optic grating sensor uniformly arranged in a mesh on the test area of ​​the sample for real-time dynamic strain measurement of the test area, and a real-time CT scanning system that scans the sample inside the shear box component and obtains sample fracture information; and a control unit.

[0004] Although this test system can conduct mechanical tests on rock masses, during the test, the broken rock masses will fall directly into the equipment. In order to avoid the broken rock fragments affecting the operation of the equipment, the test personnel need to manually clean the rock fragments that have fallen into the equipment. This process is not only time-consuming and labor-intensive, but also tedious. Therefore, we propose a sliding rockburst shear test system under dynamic disturbance. Summary of the Invention

[0005] To address the technical problem of poor performance in rock testing systems, this invention provides a sliding rockburst shear testing system under dynamic disturbance.

[0006] This invention employs the following technical solution: a sliding rockburst shear test system under dynamic disturbance, comprising a frame and a base fixed to the bottom of the frame. The frame has a sliding groove through which a worktable slides. A connecting component for connecting the worktable is provided on the frame. Above the worktable is a mounting block fixed inside the frame. Between the mounting block and the worktable is a loading block sliding inside the frame. At both ends of the mounting block near the loading block are hydraulic cylinders with piston ends fixed to the loading block. Between the worktable and the loading block is a mounting frame fixed inside the frame, offset from the loading block. A scraper slides inside the mounting frame, with its bottom end contacting the top side of the worktable. Below the worktable is a collection box fixed to the top side of the base. Through the operation of these components, mechanical tests can be performed on the rock mass, broken rock mass at the top of the worktable can be collected, and the opening on the top side of the collection box can be sealed to prevent dust from the rock mass inside the collection box from overflowing and affecting surrounding equipment.

[0007] As a further improvement to the above solution, the connecting assembly includes rack plates fixed to both ends of the bottom side of the workbench. The inside of the collection box is provided with an inclined guide plate. The top of the guide plate has a mounting hole. A connecting shaft 1, which rotates inside the collection box, is fixedly inserted through the mounting hole. A connecting shaft 2 is provided below the connecting shaft 1. Both ends of the connecting shaft 2 extend out of the frame. A gear 1, which meshes with the adjacent rack plate, is fixedly sleeved on the outer wall of the connecting shaft 2 located outside the frame. Half gears are fixedly sleeved on the outer walls of both ends of the connecting shaft 1. A gear 2, which is fixedly sleeved on the outer wall of the connecting shaft 2, is provided below the half gears. Through the operation of the above components, the broken rock mass can be guided, increasing the capacity of the collection box for the broken rock mass. The rock mass on the top side of the guide plate can be slid, preventing the rock mass on the top side of the guide plate from being stuck on the high horizontal top side of the guide plate.

[0008] As a further improvement to the above solution, one end of the connecting shaft two is connected to a motor, and a fixing plate one fixed to the top side of the base is fixed to the outside of the motor. The other end of the connecting shaft two is rotatably connected to the fixing plate two fixed to the top side of the base. The connecting shaft two can be driven to rotate by the operation of the motor.

[0009] As a further improvement to the above solution, both the frame and the collection box are provided with connection holes, and the second connecting shaft rotates inside the connection hole, allowing the second connecting shaft to rotate.

[0010] As a further improvement to the above solution, sliding grooves are provided on the inner walls of both ends of the mounting frame. Sliding blocks fixed to the scraper are slidably connected inside the sliding grooves. Guide holes are provided on the sliding blocks. Guide rods fixed inside adjacent sliding grooves are slidably inserted through the guide holes. Return springs are movably sleeved on the outside of the guide rods. One end of the return spring is fixed to the inner wall at the bottom of the sliding groove, and the other end of the return spring is fixed to the adjacent sliding block. The return spring is in a stretched state. When the scraper wears down after a long period of work and can no longer contact the top side of the worktable, the elasticity of the return spring can pull the sliding block and the scraper to move, causing the scraper to contact the top side of the worktable, thereby improving the scraper's endurance.

[0011] As a further improvement to the above solution, the outer side of the mounting frame is provided with a toggle plate, and a slot is opened on the side of the mounting frame near the toggle plate. A locking block slides through the slot. The scraper is provided with a limiting groove. One end of the locking block slides inside the limiting groove, and the other end of the locking block is fixed to the toggle plate. Guide holes are opened at both ends of the toggle plate. A guide rod fixed on the mounting frame slides through the guide hole. A limiting block with a diameter larger than the guide hole diameter is fixed to the end of the guide rod away from the mounting frame. A connecting spring is movably sleeved on the outside of the guide rod. One end of the connecting spring is fixed to the toggle plate, and the other end of the connecting spring is fixed to the adjacent limiting block. Through the cooperation of the locking block and the limiting groove, the scraper can be limited, thereby facilitating the user to load the mounting frame, pull the toggle plate, and move the toggle plate and the locking block. When the locking block is disengaged from the limiting groove, the scraper can move vertically.

[0012] As a further improvement to the above solution, a water tank is fixed to the side of the mounting block near the loading block. A piston block is slidably connected inside the water tank. A conveying pipe located above the piston block is connected to the outside of the water tank. The end of the conveying pipe away from the water tank extends into the collection box. Multiple nozzles fixed to the inner wall of the collection box are installed on the conveying pipe inside the collection box. Multiple connecting holes are opened at the bottom of the water tank. A sliding rod 1 fixed to the bottom side of the piston block slides through the connecting holes. A receiving groove is opened at the end of the sliding rod 1 away from the water tank. A sliding rod 2 fixed to the top side of the loading block slides through the receiving groove. Through the operation of the above components, the rock dust inside the collection box can be reduced, thereby improving the dust reduction speed of the collection box.

[0013] As a further improvement to the above solution, the conveying pipe is a flexible pipe, and the frame, workbench and collection box are provided with pipe holes. The conveying pipe slides through the pipe holes. By using a flexible conveying pipe, the water conveying operation of the conveying pipe can be avoided when the workbench is displaced.

[0014] As a further improvement to the above solution, a liquid level valve is installed on the outside of the water tank. The liquid level valve is located above the piston block, allowing the user to inject water into the water tank.

[0015] As a further improvement to the above solution, the outer side of the collection box is hinged with a movable door, and the outer side of the movable door is provided with a sealing ring. By opening the movable door, the user can easily clean the broken rock inside the collection box.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention can conduct mechanical tests on rock masses and clean and collect broken rock masses inside the equipment, avoiding the need for test personnel to manually clean up rock fragments that fall inside the equipment. It has high working performance and can seal and suppress dust inside the collection component when collecting rock fragments, preventing dust from escaping and affecting surrounding equipment, thus providing high protection performance.

[0018] 2. This invention can guide the rock fragments inside the collection component, increase the capacity of the collection component to hold broken rock, promote the rapid passage of rock fragments through the guiding component, increase the collection speed of rock fragments, extend the service life of the cleaning component, have strong endurance, and facilitate the handling of broken rock by workers, making it convenient to use. Attached Figure Description

[0019] Figure 1 A schematic diagram of a sliding rockburst shear test system under dynamic disturbance.

[0020] Figure 2 A cross-sectional view of a sliding rockburst shear test system under dynamic disturbance.

[0021] Figure 3 A cross-sectional view of the collection box in a sliding rockburst shear test system under dynamic disturbance.

[0022] Figure 4 for Figure 2 Enlarged structural diagram at point A;

[0023] Figure 5 A cross-sectional view of the mounting frame in a sliding rockburst shear test system under dynamic disturbance.

[0024] Figure 6 A schematic diagram of the mounting frame in a sliding rockburst shear test system under dynamic disturbance.

[0025] Figure 7 This is a cross-sectional view of the water tank in a sliding rockburst shear test system under dynamic disturbance.

[0026] Explanation of key symbols:

[0027] 1. Frame; 2. Slide groove; 3. Workbench; 4. Loading block; 5. Mounting block; 6. Hydraulic cylinder; 7. Mounting frame; 8. Scraper; 9. Sliding groove; 10. Sliding block; 11. Guide rod; 12. Return spring; 13. Actuating plate; 14. Locking block; 15. Limiting block; 16. Connecting spring; 17. Collection box; 18. Guide plate; 19. Connecting shaft two; 20. Gear one; 21. Rack plate; 22. Gear two; 23. Half gear; 24. Water tank; 25. Delivery pipe; 26. Nozzle; 27. Piston block; 28. Slide rod one; 29. ​​Receiving groove; 30. Slide rod two; 31. Base. Detailed Implementation

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] Example 1:

[0030] Combination Figure 1 The sliding rockburst shear test system under dynamic disturbance in this embodiment includes a frame 1 and a base 31 fixed to the bottom of the frame 1. The frame 1 has a groove 2, and a workbench 3 slides through the groove 2. The frame 1 is provided with a connecting component for connecting the workbench 3. An installation block 5 is fixed inside the frame 1 above the workbench 3. A loading block 4 slides inside the frame 1 between the installation block 5 and the workbench 3. Hydraulic cylinders 6 with piston ends fixed to the loading block 4 are fixed at both ends of the installation block 5 near the loading block 4. An installation frame 7 is fixed inside the frame 1 between the workbench 3 and the loading block 4. The installation frame 7 is offset from the loading block 4. A scraper 8 slides through the installation frame 7. The bottom end of the scraper 8 contacts the top side of the workbench 3. A collection box 17 is fixed to the top side of the base 31 below the workbench 3.

[0031] The implementation principle of the sliding rockburst shear test system under dynamic disturbance in this embodiment is as follows: When a mechanical test is required on the rock mass, the rock mass to be tested can be placed on the top side of the workbench 3, and the electromagnetic vibrator can be mounted on the bottom side of the loading block 4. Through the operation of the hydraulic cylinder 6, the loading block 4 is driven to make vertical displacement. At this time, the electromagnetic vibrator on the bottom side of the loading block 4 can apply pressure to the rock mass on the top side of the workbench 3, and a mechanical test can be performed on the rock mass. When the rock mass on the top side of the workbench 3 breaks, the workbench 3 is displaced. When the displaced workbench 3 is in contact with the mounting frame 7 and the scraper... When plate 8 contacts, the broken rock mass on the top side of workbench 3 can be pushed by mounting frame 7 and scraper 8. The pushed rock mass will fall into collection box 17. Collection box 17 can then receive the broken rock mass on top of workbench 3, avoiding the need for test personnel to manually clean up the broken rock mass on top of workbench 3. It is convenient to use. When the broken rock mass on top of workbench 3 has completely entered the collection box 17, the opening on the top side of collection box 17 can be sealed by the displacement of workbench 3 to prevent dust from the rock mass inside collection box 17 from overflowing and affecting the surrounding equipment.

[0032] Example 2:

[0033] Combination Figure 2 , Figure 3 and Figure 4 This embodiment, based on embodiment 1, further improves upon the following: the connecting assembly includes rack plates 21 fixed to both ends of the bottom side of the workbench 3; the collection box 17 has an inclined guide plate 18 inside; the top of the guide plate 18 has a mounting hole; a connecting shaft 1, rotating inside the collection box 17, is fixedly inserted through the mounting hole; a connecting shaft 29 is provided below the connecting shaft 1; both ends of the connecting shaft 29 extend out of the frame 1; a gear 20, meshing with the adjacent rack plate 21, is fixedly sleeved on the outer wall of the connecting shaft 29 outside the frame 1; half gears 23 are fixedly sleeved on the outer walls of both ends of the connecting shaft 1; a gear 22, fixedly sleeved on the outer wall of the connecting shaft 29, is provided below the half gears 23; and the connecting shaft 22 is connected to the outer wall of the connecting shaft 29. The rotation of connecting shaft 19 drives gear 20 to rotate. Through the cooperation of gear 20 and rack plate 21, rack plate 21 and worktable 3 can be moved. When the rock falls into the collection box 17, the broken rock inside the collection box 17 will fall onto the top side of guide plate 18. Guide plate 18 guides the broken rock, increasing the capacity of collection box 17 to hold the broken rock. When connecting shaft 19 rotates, it will drive gear 22 to rotate, which will drive half gear 23 to rotate, causing connecting shaft 1 and guide plate 18 to deflect intermittently. This will cause the rock on the top side of guide plate 18 to slide, preventing the rock on the top side of guide plate 18 from being stuck on the high horizontal top side of guide plate 18.

[0034] One end of the connecting shaft 2 19 is connected to a motor, which is a forward and reverse stepper motor. A fixing plate 1 fixed to the top side of the base 31 is fixed to the outside of the motor. The other end of the connecting shaft 2 19 is rotatably connected to a fixing plate 2 fixed to the top side of the base 31. The connecting shaft 2 19 can be driven to rotate by the operation of the motor.

[0035] Both the frame 1 and the collection box 17 are provided with connection holes. The second connecting shaft 19 rotates inside the connection hole, allowing the second connecting shaft 19 to rotate.

[0036] Example 3:

[0037] Combination Figure 5 and Figure 6 This embodiment is further improved on the basis of embodiment 1 in that: the inner walls at both ends of the mounting frame 7 are provided with sliding grooves 9, and sliding blocks 10 fixed on scrapers 8 are slidably connected inside the sliding grooves 9. The sliding blocks 10 are provided with guide holes, and guide rods 11 fixed inside adjacent sliding grooves 9 are slidably inserted inside the guide holes. A return spring 12 is movably sleeved on the outside of the guide rods 11. One end of the return spring 12 is fixed on the inner wall at the bottom of the sliding groove 9, and the other end of the return spring 12 is fixed on the adjacent sliding block 10. The return spring 12 is in a stretched state. When the scraper 8 wears down after working for a long time and can no longer contact the top side of the worktable 3, the elasticity of the return spring 12 can be used to pull the sliding block 10 and the scraper 8 to move, so that the scraper 8 can contact the top side of the worktable 3, thereby improving the endurance of the scraper 8.

[0038] The mounting frame 7 has an actuating plate 13 on its outer side. A slot is provided on the side of the mounting frame 7 near the actuating plate 13. A locking block 14 slides through the slot. The scraper 8 has a limiting groove. One end of the locking block 14 slides inside the limiting groove, and the other end of the locking block 14 is fixed to the actuating plate 13. Guide holes are provided at both ends of the actuating plate 13. A guide rod fixed to the mounting frame 7 slides through the guide holes. A limiting block 15 with a diameter larger than the guide hole diameter is fixed to the end of the guide rod away from the mounting frame 7. A connecting spring 16 is movably sleeved on the outside of the guide rod. One end of the connecting spring 16 is fixed to the actuating plate 13, and the other end of the connecting spring 16 is fixed to the adjacent limiting block 15. Through the cooperation of the locking block 14 and the limiting groove, the scraper 8 can be limited, which makes it convenient for the user to load the mounting frame 7, pull the actuating plate 13, and move the actuating plate 13 and the locking block 14. When the locking block 14 is disengaged from the limiting groove, the scraper 8 can move vertically.

[0039] Example 4:

[0040] Combination Figure 7This embodiment, based on embodiment 2, further improves upon the following: a water tank 24 is fixed to the side of the mounting block 5 near the loading block 4; a piston block 27 is slidably connected inside the water tank 24; a delivery pipe 25 located above the piston block 27 is connected to the outside of the water tank 24; one end of the delivery pipe 25 away from the water tank 24 extends into the collection box 17; multiple nozzles 26 fixed to the inner wall of the collection box 17 are installed on the delivery pipe 25 inside the collection box 17; multiple connecting holes are opened at the bottom of the water tank 24; a sliding rod 28 fixed to the bottom side of the piston block 27 slides through the connecting holes; the sliding rod 28 is away from the water tank 24. One end is provided with a receiving groove 29. Inside the receiving groove 29, a sliding rod 30 fixed to the top side of the loading block 4 slides through. By operating the hydraulic cylinder 6, the loading block 4 is moved vertically upward, pushing the sliding rod 30 and the sliding rod 28 to move vertically upward, which in turn moves the piston block 27 vertically upward. At this time, the piston block 27, which is moving vertically upward, will push the water in the water tank 24 into the delivery pipe 25. The water that enters the delivery pipe 25 will be sprayed out through the nozzle 26, thereby reducing the dust in the rock dust inside the collection box 17 and increasing the dust reduction speed of the collection box 17.

[0041] The delivery pipe 25 is a flexible pipe. The frame 1, the workbench 3 and the collection box 17 have pipe holes. The delivery pipe 25 slides through the pipe holes. The flexible delivery pipe 25 can prevent the water delivery work of the delivery pipe 25 from being affected when the workbench 3 is displaced.

[0042] A level valve is installed on the outside of the water tank 24. The level valve is located above the piston block 27. Through the level valve, the user can inject water into the water tank 24.

[0043] The collection box 17 has a hinged door on the outside, and a sealing ring is provided on the outside of the door. By opening the door, users can easily clean the broken rock inside the collection box 17.

[0044] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A sliding rockburst shear test system under dynamic disturbance, comprising a frame and a base fixed to the bottom of the frame, characterized in that, The frame has a sliding groove through which a workbench slides. The frame has a connecting assembly for connecting the workbench. Above the workbench is a mounting block fixed inside the frame. Between the mounting block and the workbench is a loading block that slides inside the frame. At both ends of the mounting block near the loading block are hydraulic cylinders with piston ends fixed to the loading block. Between the workbench and the loading block is a mounting frame fixed inside the frame. The mounting frame is offset from the loading block. A scraper slides through the mounting frame. The bottom end of the scraper contacts the top side of the workbench. Below the workbench is a collection box fixed to the top side of the base. The connecting assembly includes rack plates fixed to both ends of the bottom side of the workbench. The inside of the collection box is provided with an inclined guide plate. The top of the guide plate has a mounting hole. A connecting shaft 1 that rotates inside the collection box is fixedly inserted through the mounting hole. A connecting shaft 2 is provided below the connecting shaft 1. Both ends of the connecting shaft 2 extend out of the frame. A gear 1 that meshes with the adjacent rack plate is fixedly sleeved on the outer wall of the connecting shaft 2 located outside the frame. Half gears are fixedly sleeved on the outer walls of both ends of the connecting shaft 1. A gear 2 that is fixedly sleeved on the outer wall of the connecting shaft 2 is provided below the half gears.

2. The sliding rockburst shear test system under dynamic disturbance as described in claim 1, characterized in that, One end of the connecting shaft 2 is connected to a motor, and a fixing plate 1 fixed to the top side of the base is fixed to the outside of the motor. The other end of the connecting shaft 2 is rotatably connected to the fixing plate 2 fixed to the top side of the base.

3. The sliding rockburst shear test system under dynamic disturbance as described in claim 1, characterized in that, Both the frame and the collection box have connection holes, and the connecting shaft rotates inside the connection holes.

4. The sliding rockburst shear test system under dynamic disturbance as described in claim 1, characterized in that, The inner walls at both ends of the mounting frame are provided with sliding grooves. Sliding blocks fixed to the scraper are slidably connected inside the sliding grooves. The sliding blocks are provided with guide holes. Guide rods fixed inside adjacent sliding grooves are slidably inserted inside the guide holes. Return springs are movably sleeved on the outside of the guide rods. One end of the return spring is fixed to the inner wall at the bottom of the sliding groove, and the other end of the return spring is fixed to the adjacent sliding block. The return spring is in a stretched state.

5. The sliding rockburst shear test system under dynamic disturbance as described in claim 4, characterized in that, The mounting frame has a toggle plate on its outer side. A slot is provided on the side of the mounting frame near the toggle plate. A locking block slides through the slot. A limiting groove is provided on the scraper. One end of the locking block slides inside the limiting groove, and the other end of the locking block is fixed to the toggle plate. Guide holes are provided at both ends of the toggle plate. A guide rod fixed to the mounting frame slides through the guide hole. A limiting block with a diameter larger than the guide hole diameter is fixed to the end of the guide rod away from the mounting frame. A connecting spring is movably sleeved on the outside of the guide rod. One end of the connecting spring is fixed to the toggle plate, and the other end of the connecting spring is fixed to the adjacent limiting block.

6. The sliding rockburst shear test system under dynamic disturbance as described in claim 1, characterized in that, A water tank is fixed to the side of the mounting block near the loading block. A piston block is slidably connected inside the water tank. A delivery pipe located above the piston block is connected to the outside of the water tank. The end of the delivery pipe away from the water tank extends into the collection box. Multiple nozzles fixed to the inner wall of the collection box are installed on the delivery pipe inside the collection box. Multiple connecting holes are opened at the bottom of the water tank. A sliding rod 1 fixed to the bottom side of the piston block slides through the connecting holes. A receiving groove is opened at the end of the sliding rod 1 away from the water tank. A sliding rod 2 fixed to the top side of the loading block slides through the receiving groove.

7. The sliding rockburst shear test system under dynamic disturbance as described in claim 6, characterized in that, The conveying pipe is a flexible pipe, and the frame, workbench and collection box have pipe holes, through which the conveying pipe slides.

8. The sliding rockburst shear test system under dynamic disturbance as described in claim 6, characterized in that, A level valve is installed on the outside of the water tank, and the level valve is located above the piston block.

9. The sliding rockburst shear test system under dynamic disturbance as described in claim 1, characterized in that, The collection box has a hinged door on its outer side, and a sealing ring is provided on the outer side of the door.

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