Excavation support system for surrounding rock of cavern

Abstract

The invention relates to the technical field of supporting, and discloses an excavation supporting system for cavern surrounding rock, which comprises a plurality of mounting blocks arranged on the two sides of the interior of a cavern main body, and a plurality of fixed blocks I are fixed on the sides, close to the inner wall of the cavern main body, of the mounting blocks; a plurality of first anchor rods inserted into the cavern body are fixed to the sides, away from the mounting blocks, of the first fixing blocks, a plurality of connecting blocks corresponding to the mounting blocks are arranged at the top of the cavern body, the two ends of each connecting block are fixed to the tops of the adjacent mounting blocks respectively, and a plurality of second fixing blocks are fixed to the sides, close to the inner wall of the cavern body, of the connecting blocks. According to the device, the cavern can be supported, rock mass stability is ensured, the supporting assembly can be pre-installed and conveyed, manpower is saved, the installation efficiency is high, adaptive regulation and control can be conducted on the supporting assembly, and therefore workers can conveniently install the supporting assembly in the cavern, and use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of support, and in particular to an excavation support system for cavern surrounding rocks. Background Art

[0002] During the excavation process of the cavern, corresponding support equipment is needed to support the cavern to ensure the stability of the rock mass. The existing application number is CN2022209161691, and a patent document with a publication date of 2022-09-02 discloses a large underground cavern surrounding rock support structure, including an embedded frame, which is symmetrically fixed on the side wall of the arc-shaped cavern, and each embedded frame is provided with a slide groove along the length direction. The two ends of the arc frame are slidably set in the left and right slide grooves and can move forward and backward along the slide groove; the top of the arc frame is installed with a support seat along the arc track, and the support seat is close to the arc inner wall of the arc cavern and pressed tightly. The utility model provides a large underground cavern surrounding rock support structure, which has a stable structure and good support effect, and can be convenient for installing a rock maintenance net in the later stage. During the application of this support device, construction workers are required to first transport the support plates to the interior of the cavern, and then load the plates inside the cavern onto the embedded racks. This process is not only time-consuming and labor-intensive, but also the loading progress is relatively slow. For this reason, we propose an excavation support system for cavern surrounding rock. Summary of the invention

[0003] In order to solve the technical problem that the existing support equipment is inconvenient to install, the present invention provides an excavation support system for cavern surrounding rock.

[0004] The present invention is implemented by the following technical scheme: an excavation support system for cavern surrounding rock, comprising a plurality of mounting blocks arranged on both sides of a cavern main body, a plurality of fixing blocks 1 being fixed on a side of the mounting block close to the inner wall of the cavern main body, a plurality of anchor rods 1 being fixed on a side of the fixing block 1 away from the mounting block and being inserted into the cavern main body, a plurality of connecting blocks corresponding to the mounting blocks being arranged on the top of the cavern main body, two ends of the connecting blocks being respectively fixed to the tops of adjacent mounting blocks, a plurality of fixing blocks 2 being fixed on a side of the connecting block close to the inner wall of the cavern main body, a plurality of anchor rods 2 being fixed on a side of the fixing block 2 away from the connecting block and being inserted into the cavern main body, supporting plates 1 sliding inside the mounting blocks being arranged on both sides of the cavern main body, the mounting blocks being fixed inside the cavern main body by the cooperation of the anchor rods 1 and the fixing blocks 1, the connecting blocks being fixed inside the cavern main body by the cooperation of the fixing blocks 2 and the anchor rods 2, the inner walls on both sides of the cavern main body being supported by the supporting plates 1 to ensure the stability of the rock mass.

[0005] As a further improvement of the above scheme, a sliding groove 1 is provided on the inner walls at both ends of the connecting block, a support plate 2 is slidably inserted inside the sliding groove 1, a receiving groove is provided at the end of the support plate 2 away from the connecting block, and a support plate 3 is provided inside the connecting block. The two ends of the support plate 3 slide in the adjacent receiving grooves respectively, and the inner wall of the top of the cave main body can be supported by the support plate 2 and the support plate 3. Through the sliding cooperation of the receiving groove and the support plate 3, the overall length of the support plate 2 and the support plate 3 can be flexibly adjusted according to the width of the interior of the cave main body.

[0006] As a further improvement of the above scheme, two slide grooves are provided at both ends of the mounting block, and the two ends of the support plate one slide in the adjacent slide grooves two respectively. Slots are provided at both ends of the support plate one, and ropes are provided at both ends of both sides of the interior of the cave main body. The ropes slide in the adjacent slots respectively, and the outer wall of the rope located in the slot is fixedly sleeved with a connecting sleeve that slides in the slot, and the outer wall of the connecting sleeve is threaded, and the outer walls at both ends of the connecting sleeve are threadedly sleeved with limiting sleeves that contact the outer side of the support plate one. , the outer sides of both ends of the support plate are slidably sleeved with connecting frames, the two ends of the connecting frame close to the adjacent limiting sleeve are fixed with clamping blocks, the end of the clamping block away from the connecting frame is provided with a clamping groove, the clamping groove is movably sleeved on the outside of the adjacent limiting sleeve, a plurality of screw rods are provided on the side of the support plate away from the fixed block, the outer walls of the two ends of the screw rods are threadedly sleeved with driving sleeves, the driving sleeves are embedded in the adjacent connecting frames, and an assembly block is fixed on the top of the side of the support plate away from the fixed block, the assembly block is provided with a plurality of through holes, and the inside of the through holes A connecting column is slidably penetrated, a connecting groove is opened on the side of the supporting plate 2 close to the assembly block, the end of the connecting column located above the assembly block slides in the adjacent connecting groove, a supporting sleeve is movably sleeved outside the connecting column located above the assembly block, the supporting sleeve is fixed on the assembly block, and the end of the supporting sleeve away from the assembly block contacts the adjacent supporting plate 2, a transmission block is provided on the side of the supporting plate 1 away from the fixed block 1, the transmission block is provided with a plurality of sliding holes corresponding to the screw rod, the screw rod slides in the adjacent sliding holes, and the connecting column located below the assembly block The end is fixed on the adjacent transmission block, and the outer sleeve of the screw rod between the assembly block and the transmission block is provided with a pushing spring. Through the operation of the above components, the corresponding position of the limiting sleeve can be adjusted according to the width of the support plate one, so that within a certain range, support plates one of different sizes can be transported, and support plates one, two and three can be pre-installed and transported, avoiding the construction personnel transporting support plates one, two and three to the interior of the cavern first, and then loading support plates one, two and three, saving manpower.

[0007] As a further improvement of the above scheme, the thread directions at both ends of the screw rod are opposite, and a limiting block is fixed to the outer wall of one end of the screw rod. The diameter of the limiting block is larger than the diameter of the driving sleeve. The other end of the screw rod is rotatably connected to the bottom side of the adjacent assembly block. By rotating the limiting block, the screw rod can be driven to rotate.

[0008] As a further improvement of the above scheme, the transmission block is located between the two connecting frames, one end of the push spring is fixed on the assembly block, and the other end of the push spring is fixed on the transmission block. Through the elasticity of the push spring, the displaced transmission block can be pushed to reset the displacement.

[0009] As a further improvement of the above scheme, sliding grooves are provided on both sides of the support plate three, and a plurality of guide columns are slidably connected inside the sliding grooves. One end of the guide column is fixed on the inner wall of the accommodating groove located at one end of the support plate three, and the other end of the guide column is fixed with a blocking block in contact with the top side of the support plate three. The diameter of the blocking block is larger than the width of the notch of the sliding groove. Through the cooperation of the guide column and the sliding groove, the displacement of the support plate three can be guided, and the blocking block can be prevented from sliding out of the accommodating groove.

[0010] As a further improvement of the above scheme, the card slot is a rectangular slot, and the limiting sleeve is a rectangular sleeve. By using the card slot and the limiting sleeve both having rectangular structures, the limiting sleeve inside the card slot can be limited to prevent the limiting sleeve from rotating inside the card slot.

[0011] As a further improvement of the above-mentioned scheme, loading blocks 1 are fixed on both sides of the outside of the cavern main body, and loading blocks 2 are fixed on both sides of the inside of the cavern main body. Both ends of loading block 1 and loading block 2 are provided with winding columns, one end of the rope is fixedly wound around an adjacent winding column located outside the cavern main body, and the other end of the rope is fixedly wound around an adjacent winding column located inside the cavern main body. The rope can be wound up or released by rotating the winding column.

[0012] As a further improvement of the above scheme, one end of the winding column is transmission connected to a motor, the motor located in loading block one is fixed on the inner wall of one side of loading block one, the end of the winding column located in loading block one away from the motor is rotatably connected to the inner wall on the other side of loading block one, the motor located in loading block two is fixed on the inner wall on one side of loading block two, and the end of the winding column located in loading block two away from the motor is rotatably connected to the inner wall on the other side of loading block two, and the operation of the motor can drive the winding column to rotate.

[0013] As a further improvement of the above scheme, the length of the limiting sleeve is greater than the width of the slot, and the length of the slot is greater than the length of the limiting sleeve. The slot having a length greater than the length of the limiting sleeve can facilitate construction workers to disassemble and assemble the support plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention can support the cavern to ensure the stability of the rock mass, and can pre-install and transport the support components to avoid the construction workers transporting the support plates to the interior of the cavern first and then loading the support components, thereby saving manpower and increasing the installation rate of the support components. The support components can be adaptively adjusted according to the width of the cavern, thereby facilitating the workers to install the support components inside the cavern, and the method is easy to use.

[0016] 2. The present invention can facilitate construction workers to disassemble, assemble and maintain the support components, and can adjust the corresponding positions of the support components according to support requirements. It has a wide working range and can load support components of different sizes within a certain range, with high working performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of an excavation support system for cavern surrounding rock;

[0018] Figure 2 A schematic diagram of a structure of an installation block in an excavation support system for surrounding rock of a cavern;

[0019] Figure 3 It is a structural schematic diagram of a support plate three in an excavation support system for cavern surrounding rock;

[0020] Figure 4 It is a structural schematic diagram of an excavation support system for cavern surrounding rock;

[0021] Figure 5 It is a structural schematic diagram of a support plate 1 in an excavation support system for cavern surrounding rock;

[0022] Figure 6 It is a structural schematic diagram of a connection frame in an excavation support system for cavern surrounding rock;

[0023] Figure 7 for Figure 4 The enlarged structural diagram at A in the middle;

[0024] Figure 8 for Figure 6 Schematic diagram of the enlarged structure at point B.

[0025] Description of main symbols:

[0026] 1. The main body of the cavern; 2. The mounting block; 3. The first fixing block; 4. The first anchor rod; 5. The connecting block; 6. The second fixing block; 7. The second anchor rod; 8. The first supporting plate; 9. The slot; 10. The rope; 11. The winding column; 12. The guide column; 13. The connecting sleeve; 14. The limiting sleeve; 15. The blocking block; 16. The connecting frame; 17. The clamping block; 18. The clamping slot; 19. The screw rod; 20. The driving sleeve; 21. The assembly block; 22. The supporting sleeve; 23. The second supporting plate; 24. The first slide groove; 25. The connecting column; 26. The transmission block; 27. The pushing spring; 28. The receiving slot; 29. ​​The third supporting plate; 30. The sliding slot. DETAILED DESCRIPTION

[0027] 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.

[0028] Embodiment 1:

[0029] Combination Figure 1 and Figure 2 The excavation support system for cavern surrounding rock of the present embodiment comprises a plurality of mounting blocks 2 arranged on both sides of the interior of a cavern body 1, a plurality of fixing blocks 3 are fixed on the side of the mounting block 2 close to the inner wall of the cavern body 1, a plurality of anchor rods 4 inserted in the interior of the cavern body 1 are fixed on the side of the fixing block 3 away from the mounting block 2, a plurality of connecting blocks 5 corresponding to the mounting blocks 2 are arranged on the top of the cavern body 1, two ends of the connecting block 5 are respectively fixed to the tops of adjacent mounting blocks 2, a plurality of fixing blocks 6 are fixed on the side of the connecting block 5 close to the inner wall of the cavern body 1, a plurality of anchor rods 7 inserted in the interior of the cavern body 1 are fixed on the side of the fixing block 6 away from the connecting block 5, and a supporting plate 8 sliding in the interior of the mounting block 2 is arranged on both sides of the interior of the cavern body 1.

[0030] The implementation principle of an excavation support system for cavern surrounding rock in the embodiment of the present application is as follows: through the cooperation of anchor rod 1 4 and fixing block 1 3, the mounting block 2 can be fixed inside the cavern body 1; through the cooperation of fixing block 2 6 and anchor rod 2 7, the connecting block 5 can be fixed inside the cavern body 1; through supporting plate 1 8, the inner walls on both sides of the cavern body 1 can be supported to ensure the stability of the rock mass.

[0031] Embodiment 2:

[0032] Combination Figure 3Based on the embodiment 1, the present embodiment is further improved in that: the inner walls at both ends of the connecting block 5 are provided with a slide groove 24, and a supporting plate 23 is slidably inserted inside the slide groove 24. The end of the supporting plate 23 away from the connecting block 5 is provided with a receiving groove 28, and a supporting plate 3 29 is provided inside the connecting block 5. The two ends of the supporting plate 3 29 slide in the adjacent receiving grooves 28 respectively. The inner wall of the top of the cave main body 1 can be supported by the supporting plate 23 and the supporting plate 3 29. Through the sliding cooperation of the receiving groove 28 and the supporting plate 3 29, the overall length of the supporting plate 23 and the supporting plate 3 29 can be flexibly adjusted according to the width of the inside of the cave main body 1.

[0033] Embodiment 3:

[0034] Combination Figure 4 , Figure 5 , Figure 7 and Figure 8On the basis of embodiment 1, the present embodiment is further improved in that: two slide grooves are provided at both ends of the mounting block 2, two ends of the supporting plate 8 slide in the adjacent slide grooves 2 respectively, and slots 9 are provided at both ends of the supporting plate 8. Both ends of the two sides of the interior of the cave main body 1 are provided with ropes 10, and the ropes 10 slide in the adjacent slots 9 respectively. The outer wall of the rope 10 located in the slot 9 is fixedly sleeved with a connecting sleeve 13 that slides in the slot 9. The outer wall of the connecting sleeve 13 is threaded, and the outer walls of both ends of the connecting sleeve 13 are threadedly sleeved with limiting sleeves 14 that contact the outer side of the supporting plate 8. The outer sides of both ends of the supporting plate 8 are slidably sleeved with connecting frames 16, and the connecting frames 16 are fixed with blocks at both ends of the side close to the adjacent limiting sleeve 14. 17, a card slot 18 is provided at one end of the card block 17 away from the connection frame 16, and the card slot 18 is movably sleeved on the outside of the adjacent limiting sleeve 14, a plurality of screw rods 19 are provided on the side of the support plate 18 away from the fixed block 13, and the outer walls of both ends of the screw rods 19 are threadedly sleeved with drive sleeves 20, and the drive sleeves 20 are embedded in the adjacent connection frame 16, and an assembly block 21 is fixed on the top of the side of the support plate 18 away from the fixed block 13, and the assembly block 21 is provided with a plurality of through holes, and a connecting column 25 is slidably penetrated inside the through holes, and a connecting groove is provided on the side of the support plate 23 close to the assembly block 21, and the end of the connecting column 25 located above the assembly block 21 slides inside the adjacent connecting groove, and the outer sleeve of the connecting column 25 located above the assembly block 21 is movably sleeved with a support sleeve 22, and the support sleeve 2 2 is fixed on the assembly block 21, and the end of the support sleeve 22 away from the assembly block 21 contacts the adjacent support plate 23. A transmission block 26 is provided on the side of the support plate 8 away from the fixed block 3. The transmission block 26 is provided with a plurality of sliding holes corresponding to the screw rod 19. The screw rod 19 slides inside the adjacent sliding holes. The end of the connecting column 25 located below the assembly block 21 is fixed on the adjacent transmission block 26. The screw rod 19 located between the assembly block 21 and the transmission block 26 is sleeved with a push spring 27 on the outside. When it is necessary to load the support plate 8 and the support plate 23 inside the cave main body 1, the rope 10 can be pulled to clamp the rope 10 in the corresponding slot 9 of the support plate 8, and then the support plate 8 can be pushed. When the support plate 8 enters the slide groove of the installation block 2 After the limiting sleeve 14 is inside, the corresponding position of the limiting sleeve 14 can be adjusted according to the width of the supporting plate 8, and then the limiting sleeve 14 can be rotated, and the threaded cooperation of the limiting sleeve 14 and the connecting sleeve 13 can drive the limiting sleeve 14 to move. When the limiting sleeve 14 contacts the supporting plate 8, the screw rod 19 can be rotated at this time, and the cooperation of the screw rod 19 and the driving sleeve 20 can drive the driving sleeve 20 and the connecting frame 16 to move. At this time, the transmission block 26 can be pressed by the displaceable connecting frame 16, and the transmission block 26 can be moved, and the connecting column 25 can be moved. When the connecting column 25 moves to a suitable position, the supporting plate 23 can be placed inside the slide groove 24, and then the screw rod 19 can be rotated, and the cooperation of the screw rod 19 and the driving sleeve 20 can be used.The driving sleeve 20 and the connecting frame 16 are driven to move. When the slot 18 on the block 17 is stuck outside the adjacent limiting sleeve 14, the elasticity of the push spring 27 is used to push the transmission block 26 and the connecting column 25 to reset. When the connecting column 25 enters the adjacent connecting slot, the rope 10 inside the cave body 1 can be rolled up to drive the limiting sleeve 14 to move, and the supporting plate 1 8 to move. At this time, the displaced supporting plate 1 8 can drive the supporting plate 2 23 and the supporting plate 3 29 to move, so that the construction personnel do not need to transport the supporting plates to the interior of the cave first, and then load the supporting components, which saves manpower and improves the installation rate of the supporting components.

[0035] The threads at both ends of the screw rod 19 are in opposite directions. A limiting block is fixed to the outer wall of one end of the screw rod 19. The diameter of the limiting block is larger than the diameter of the drive sleeve 20. The other end of the screw rod 19 is rotatably connected to the bottom side of the adjacent assembly block 21. By rotating the limiting block, the screw rod 19 can be driven to rotate.

[0036] The transmission block 26 is located between the two connection frames 16 , one end of the push spring 27 is fixed on the assembly block 21 , and the other end of the push spring 27 is fixed on the transmission block 26 . The elasticity of the push spring 27 can push the displaced transmission block 26 to reset.

[0037] Sliding grooves 30 are provided on both sides of the support plate three 29, and a plurality of guide columns 12 are slidably connected inside the sliding grooves 30. One end of the guide column 12 is fixed on the inner wall of the receiving groove 28 located at one end of the support plate three 29, and the other end of the guide column 12 is fixed with a blocking block 15 in contact with the top side of the support plate three 29. The diameter of the blocking block 15 is larger than the width of the notch of the sliding groove 30. Through the cooperation of the guide column 12 and the sliding groove 30, the displacement of the support plate three 29 can be guided, and through the blocking block 15, the blocking block 15 can be prevented from sliding out of the receiving groove 28.

[0038] The card slot 18 is a rectangular slot, and the limiting sleeve 14 is a rectangular sleeve. The card slot 18 and the limiting sleeve 14 are both rectangular structures, so the limiting sleeve 14 inside the card slot 18 can be limited to prevent the limiting sleeve 14 from rotating inside the card slot 18.

[0039] Embodiment 4:

[0040] Combination Figure 6The present embodiment is further improved on the basis of the embodiment 1 in that: loading blocks 1 are fixed on both sides of the outside of the cave main body 1, loading blocks 2 are fixed on both sides of the inside of the cave main body 1, and winding posts 11 are provided at both ends of the loading blocks 1 and 2. One end of the rope 10 is fixedly wound around the adjacent winding post 11 located outside the cave main body 1, and the other end of the rope 10 is fixedly wound around the adjacent winding post 11 located inside the cave main body 1. One end of the winding post 11 is transmission-connected with a motor, and the motor is a forward and reverse stepping motor. The motor located in loading block one is fixed on the inner wall of one side of loading block one, and the end of the winding column 11 located in loading block one away from the motor is rotatably connected to the inner wall on the other side of loading block one. The motor located in loading block two is fixed on the inner wall of one side of loading block two, and the end of the winding column 11 located in loading block two away from the motor is rotatably connected to the inner wall on the other side of loading block two. The operation of the motor can drive the winding column 11 to rotate, and the corresponding rope 10 can be wound or released through the rotating winding column 11.

[0041] The length of the limiting sleeve 14 is greater than the width of the slot 9, and the length of the slot 9 is greater than the length of the limiting sleeve 14. The slot 9 having a length greater than the length of the limiting sleeve 14 can facilitate the construction workers to disassemble and assemble the support plate 8.

[0042] Working principle: when it is necessary to load the supporting plate 1 8 and the supporting plate 2 23 inside the cave main body 1, the rope 10 can be pulled to clamp the rope 10 in the corresponding slot 9 of the supporting plate 1 8, and then the supporting plate 1 8 can be pushed. When the supporting plate 1 8 enters the inside of the slide groove 2 of the mounting block 2, the corresponding position of the limiting sleeve 14 can be adjusted according to the width of the supporting plate 1 8, and then the limiting sleeve 14 can be rotated, and the threaded cooperation of the limiting sleeve 14 and the connecting sleeve 13 can drive the limiting sleeve 14 to move. When the limiting sleeve 14 contacts the supporting plate 1 8, the screw rod 19 can be rotated at this time, and the cooperation of the screw rod 19 and the driving sleeve 20 can drive the driving sleeve 20 and the connecting frame 16 to move. At this time, the transmission block 26 can be pressed by the displaceable connecting frame 16, driving the transmission block 26 to move, and driving the connecting column 25 to move. When the connecting column 25 moves to a suitable position, the supporting plate 2 23 can be placed in the inside of the slide groove 1 24. After that, the screw rod 19 can be rotated, and the driving sleeve 20 and the connecting frame 16 are driven to move through the cooperation of the screw rod 19 and the driving sleeve 20. When the slot 18 on the clamping block 17 is stuck on the outside of the adjacent limiting sleeve 14, at the same time, the elasticity of the pushing spring 27 is used to push the transmission block 26 and the connecting column 25 to reset and move. When the connecting column 25 enters the adjacent connecting groove, the limiting sleeve 14 can be moved by winding up the rope 10 inside the cave main body 1, and the support plate 1 8 can be moved. At this time, the support plate 2 23 and the support plate 3 29 can be moved by the displaced support plate 1 8, so that the construction personnel do not need to transport the support plates to the interior of the cave first, and then load the support components, which saves manpower and improves the installation rate of the support components. When the support plates 1 8, 23 and 29 enter the deep of the cave main body 1, the inner walls on both sides of the cave main body 1 can be supported to ensure the stability of the rock mass.

[0043] 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. An excavation support system for cavern surrounding rock, comprising a plurality of mounting blocks arranged on both sides of the interior of the cavern body, characterized in that: A plurality of fixing blocks 1 are fixed to a side of the mounting block close to the inner wall of the cavern body, a plurality of anchor rods 1 inserted into the cavern body are fixed to a side of the fixing block 1 away from the mounting block, a plurality of connecting blocks corresponding to the mounting blocks are provided on the top of the cavern body, two ends of the connecting blocks are respectively fixed to the tops of adjacent mounting blocks, a plurality of fixing blocks 2 are fixed to a side of the connecting block close to the inner wall of the cavern body, a plurality of anchor rods 2 inserted into the cavern body are fixed to a side of the fixing block 2 away from the connecting block, and supporting plates 1 sliding inside the mounting blocks are provided on both sides of the interior of the cavern body.

2. An excavation support system for cavern surrounding rock according to claim 1, characterized in that: The inner walls at both ends of the connecting block are provided with a sliding groove 1, a supporting plate 2 is slidably inserted inside the sliding groove 1, a receiving groove is provided at the end of the supporting plate 2 away from the connecting block, and a supporting plate 3 is arranged inside the connecting block, and the two ends of the supporting plate 3 slide respectively inside the adjacent receiving grooves.

3. The excavation support system for cavern surrounding rock according to claim 2, characterized in that: The two ends of the mounting block are provided with a sliding groove two, and the two ends of the support plate one slide respectively slide inside the adjacent sliding groove two, and the two ends of the support plate one are provided with a groove, and the two ends of the two sides of the interior of the cave main body are provided with ropes, and the ropes slide respectively slide in the adjacent slots, and the outer wall of the rope located in the slot is fixedly sleeved with a connecting sleeve that slides through the slot. The outer wall of the connecting sleeve is provided with a thread, and the outer walls of the two ends of the connecting sleeve are threadedly sleeved with a limiting sleeve in contact with the outer side of the support plate one, and the outside of the two ends of the support plate one is slidably sleeved with a connecting frame, and the two ends of the connecting frame close to the adjacent limiting sleeve are fixed with a clamping block, and the end of the clamping block away from the connecting frame is provided with a clamping groove, and the clamping groove is movably sleeved outside the adjacent limiting sleeve, and a plurality of screw rods are provided on the side of the support plate one away from the fixed block one, and the outer walls of the two ends of the screw rods are threadedly sleeved The cam is provided with a plurality of through holes, and a connecting column is slidably penetrated inside the through holes. A connecting groove is provided on the side of the support plate 2 close to the assembly block. The end of the connecting column above the assembly block slides in the adjacent connecting groove. A supporting sleeve is movably sleeved on the outside of the connecting column above the assembly block. The supporting sleeve is fixed on the assembly block. One end of the supporting sleeve away from the assembly block contacts with the adjacent support plate 2. A transmission block is provided on the side of the support plate 1 away from the fixed block. The transmission block is provided with a plurality of sliding holes corresponding to the screw rod. The screw rod slides in the adjacent sliding holes. The end of the connecting column below the assembly block is fixed on the adjacent transmission block. A pushing spring is provided on the outside of the screw rod between the assembly block and the transmission block.

4. An excavation support system for cavern surrounding rock as claimed in claim 3, characterized in that: The threads at both ends of the screw rod are in opposite directions. A limiting block is fixed to the outer wall of one end of the screw rod. The diameter of the limiting block is larger than the diameter of the driving sleeve. The other end of the screw rod is rotatably connected to the bottom side of the adjacent assembly block.

5. The excavation support system for cavern surrounding rock according to claim 3, characterized in that: The transmission block is located between the two connection frames, one end of the push spring is fixed on the assembly block, and the other end of the push spring is fixed on the transmission block.

6. The excavation support system for cavern surrounding rock according to claim 2, characterized in that: Sliding grooves are provided on both sides of the support plate three, and a plurality of guide columns are slidably connected inside the sliding grooves. One end of the guide column is fixed on the inner wall of the accommodating groove located at one end of the support plate three, and the other end of the guide column is fixed with a blocking block in contact with the top side of the support plate three, and the diameter of the blocking block is larger than the width of the sliding groove.

7. The excavation support system for cavern surrounding rock according to claim 3, characterized in that: The card slot is a rectangular slot, and the limiting sleeve is a rectangular sleeve.

8. The excavation support system for cavern surrounding rock according to claim 3, characterized in that: Loading blocks 1 are fixed on both sides of the outside of the cave main body, and loading blocks 2 are fixed on both sides of the inside of the cave main body. Both ends of loading block 1 and loading block 2 are provided with winding columns, one end of the rope is fixedly wound around the adjacent winding column located outside the cave main body, and the other end of the rope is fixedly wound around the adjacent winding column located inside the cave main body.

9. An excavation support system for cavern surrounding rock as claimed in claim 8, characterized in that: One end of the winding column is transmission connected to a motor, the motor located in loading block one is fixed on the inner wall of one side of loading block one, the end of the winding column located in loading block one away from the motor is rotatably connected to the inner wall on the other side of loading block one, the motor located in loading block two is fixed on the inner wall of one side of loading block two, and the end of the winding column located in loading block two away from the motor is rotatably connected to the inner wall on the other side of loading block two.

10. The excavation support system for cavern surrounding rock according to claim 3, characterized in that: The length of the limiting sleeve is greater than the width of the slot, and the length of the slot is greater than the length of the limiting sleeve.

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