Surrounding rock supporting structure for highway tunnel

Abstract

The utility model discloses a highway tunnel surrounding rock supporting structure which comprises an outer support and an inner support, a positioning assembly is installed on the inner side of the inner support, the positioning assembly comprises a positioning ring and a clamping sleeve, a connecting assembly is installed on the positioning ring and comprises a connecting plate and a guide rod, an alarm assembly is installed on the inner side of the clamping sleeve, and the alarm assembly is installed on the inner side of the clamping sleeve. The warning assembly comprises a clamping block and a button, a reinforcing assembly is installed on the outer support and comprises a connecting rod and a screw rod, according to the highway tunnel surrounding rock support structure, when the outer support and the inner support deform due to large pressure, the clamping block extrudes the button to give out a danger alarm, so that a highway tunnel can be blocked in time, and the safety of the highway tunnel is improved. Meanwhile, the positioning ring can be prevented from collapsing, the safety of personnel and vehicles in the tunnel is guaranteed, the screw is used for generating pulling force to the outer support, the supporting strength of the outer support to rock and soil around the tunnel is improved, and the safety supporting device is suitable for safety supporting of the highway tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of surrounding rock support equipment for highway tunnels, in particular to a surrounding rock support structure for highway tunnels. Background Art

[0002] In order to protect the safety of highway tunnels, it is often necessary to use surrounding rock support equipment to support and reinforce highway tunnels. The utility model patent with patent application number CN201820614734.2 discloses a support structure for soft surrounding rock tunnels, which can form a three-in-one reinforcement support mechanism in the surrounding rock tunnel through an external reinforcement and holding mechanism, an internal reinforcement and holding mechanism, an inner reinforced concrete layer, an outer reinforced concrete layer, an inner support and an outer support, and closely integrate the support structure with the rock mass of the surrounding rock tunnel to provide stable support for the rock mass of the surrounding rock tunnel. Under the action of the grab teeth, the external support can firmly grasp the rock mass of the surrounding rock tunnel. The surrounding rock tunnel rock mass is supported, thereby enhancing the structural firmness and stability of the support structure and extending the service life of the support structure. According to the disclosed technical solution, when the existing highway tunnel surrounding rock support equipment is in use, on the one hand, when the surrounding rock support is deformed due to the squeezing of the rock and soil in the tunnel, it is unable to carry out early warning work, which is not conducive to ensuring the safety of vehicles and personnel in the tunnel. On the other hand, the surrounding rock support can only use its own strength to support the tunnel, and cannot effectively use the strength of the mountain itself to support the rock and soil around the tunnel, which is not conducive to improving the support effect.

[0003] Therefore, how to design a surrounding rock support structure for highway tunnels has become our current problem to be solved. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a highway tunnel surrounding rock support structure to solve the problems raised in the above-mentioned background technology. The utility model is reasonably designed, convenient to use, and suitable for safe support use in highway tunnels.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a highway tunnel surrounding rock support structure, including an outer support and an inner support, a positioning assembly is installed on the inner side of the inner support, the positioning assembly includes a positioning ring and a clamping sleeve, a connecting assembly is installed on the positioning ring, the connecting assembly includes a connecting plate and a guide rod, an alarm assembly is installed on the inner side of the clamping sleeve, the alarm assembly includes a block and a button, a reinforcement assembly is installed on the outer support, the reinforcement assembly includes a connecting rod and a screw, a rotating assembly is installed on the screw, and the rotating assembly includes a rotating shaft one and a rotating shaft two.

[0006] Furthermore, the outer support sleeve is arranged on the outer side of the inner support, and the inner sides of the outer support and the inner support are both installed with a frame, and the frame is a steel frame.

[0007] Furthermore, one end of the connecting rod is welded to the frame inside the outer support, and the other end of the connecting rod extends to the outer side of the outer support.

[0008] Furthermore, the rotating shaft 1 is installed at one end of the screw rod, and the rotating shaft 2 is installed at the other end of the connecting rod. The screw rod is connected to the connecting rod through the rotating shaft 1 and the rotating shaft 2, and the rotating shaft 1 and the rotating shaft 2 are perpendicular to each other.

[0009] Furthermore, the bottom of the positioning ring is mounted on the inner wall of the bottom of the inner support by means of bolts, and the inner wall of the inner support is sleeved on the outer side of the positioning ring.

[0010] Furthermore, the ferrule is mounted on the inner wall of the inner support by bolts, and the connecting plate is mounted on the outer side of the positioning ring by bolts, and the ferrule and the connecting plate are evenly distributed on the outer side of the positioning ring.

[0011] Furthermore, a slot is provided on the inner side of the sleeve, the block is clamped on the inner side of the slot, one end of the guide rod is welded to the block, and the other end of the guide rod passes through the slot and is welded to the connecting plate.

[0012] Furthermore, the card block is clamped on the inner wall of one end of the card slot, and the button is installed on the inner wall of the other end of the card slot by means of bolts.

[0013] Beneficial effects: 1. When the surrounding rock support structure of the highway tunnel is in operation, when the outer support and the inner support are deformed due to greater pressure, the inner support squeezes the sleeve, and the sleeve drives the button in the slot to move toward the block. The block is fixed to the positioning ring through a guide rod and a connecting plate, so that the block squeezes the button, and the button is connected to an external alarm mechanism (such as a warning light, a warning bell, etc.), thereby issuing a danger alarm so that the highway tunnel can be blocked in time and the deformed part can be repaired. The sleeve on the inner support generates a pulling force on the block, and then generates a pulling force on the positioning ring through the guide rod and the connecting plate, thereby preventing the positioning ring from collapsing and ensuring the safety of people and vehicles in the tunnel.

[0014] 2. During the construction of the surrounding rock support structure of the highway tunnel, the screw is first driven into the inner side of the mountain from the inside of the tunnel, and then the screw is connected and fixed with the connecting rod through the rotating shaft 1 and the rotating shaft 2 in turn, and then the connecting rod is welded and fixed to the skeleton in the external support, and then the casting and construction of the external support and the internal support are carried out in turn. The screw can be effectively connected and fixed with the inner foundation stone of the mountain, and then the screw can be effectively used to generate tension for the external support, thereby improving the supporting strength of the external support to the rock and soil around the tunnel. The screw is connected to the skeleton in the external support through the rotating shaft 1, the rotating shaft 2 and the connecting rod, so as to prevent the external support from being pried after the screw becomes loose and disconnected, thereby ensuring the safety of the external support.

[0015] 3. The surrounding rock support structure of the highway tunnel is reasonably designed, efficient and convenient to use, and is suitable for safe support of highway tunnels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a highway tunnel surrounding rock support structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of a surrounding rock support structure for a highway tunnel according to the utility model;

[0018] Figure 3 This is a structural schematic diagram of a clamping sleeve of a highway tunnel surrounding rock support structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of a screw rod of a highway tunnel surrounding rock support structure of the utility model;

[0020] In the figure: 1. External support; 2. Internal support; 3. Frame; 4. Positioning ring; 5. Clamping sleeve; 6. Connecting plate; 7. Slot; 8. Block; 9. Guide rod; 10. Button; 11. Connecting rod; 12. Screw; 13. Rotating shaft one; 14. Rotating shaft two. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 4The utility model provides a technical solution: a highway tunnel surrounding rock support structure, including an outer support 1 and an inner support 2, a positioning assembly is installed on the inner side of the inner support 2, the positioning assembly includes a positioning ring 4 and a clamping sleeve 5, a connecting assembly is installed on the positioning ring 4, the connecting assembly includes a connecting plate 6 and a guide rod 9, an alarm assembly is installed on the inner side of the clamping sleeve 5, the alarm assembly includes a clamping block 8 and a button 10, a reinforcement assembly is installed on the outer support 1, the reinforcement assembly includes a connecting rod 11 and a screw 12, a rotating assembly is installed on the screw 12, the rotating assembly includes a rotating shaft 13 and a rotating shaft 2 14, the outer support 1 is sleeved on the outer side of the inner support 2, the inner sides of the outer support 1 and the inner support 2 are both installed with a skeleton 3, the skeleton 3 is a steel skeleton, one end of the connecting rod 11 is welded to the skeleton 3 in the outer support 1, the other end of the connecting rod 11 extends to the outer side of the outer support 1, the rotating shaft 13 is installed on the screw The screw rod 12 is connected to the connecting rod 11 through the rotating shaft 13 and the rotating shaft 14, and the rotating shaft 13 and the rotating shaft 2 14 are perpendicular to each other. During the construction process, the screw rod 12 is first driven into the inner side of the mountain from the inner side of the tunnel, and then the screw rod 12 is connected and fixed to the connecting rod 14 through the rotating shaft 13 and the rotating shaft 2 14 in turn, and then the connecting rod 14 is welded and fixed to the skeleton 3 in the outer support 1, and then the outer support 1 is connected and fixed to the skeleton 3 in the outer support 1. The pouring and construction work of the outer support 1 and the inner support 2 is carried out at the same time, and the screw 12 can be effectively used to connect and fix with the inner foundation stone of the mountain, and then the screw 12 can be effectively used to generate tension for the outer support 1, so as to improve the supporting strength of the outer support 1 to the rock and soil around the tunnel. The screw 12 is connected to the skeleton 3 in the outer support 1 through the rotating shaft 13, the rotating shaft 2 14 and the connecting rod 11, so as to prevent the outer support 1 from being pried after the screw 12 becomes loose and breaks, thereby ensuring the safety of the outer support 1.

[0023] In this embodiment, the bottom of the positioning ring 4 is installed on the inner wall of the bottom of the inner support 2 by bolts, the inner wall of the inner support 2 is sleeved on the outer side of the positioning ring 4, the clamping sleeve 5 is installed on the inner wall of the inner support 2 by bolts, the connecting plate 6 is installed on the outer side of the positioning ring 4 by bolts, the clamping sleeve 5 and the connecting plate 6 are evenly distributed on the outer side of the positioning ring 4, a slot 7 is opened on the inner side of the clamping sleeve 5, the clamping block 8 is clamped on the inner side of the slot 7, one end of the guide rod 9 is welded to the clamping block 8, the other end of the guide rod 9 passes through the slot 7 and is welded to the connecting plate 6, the clamping block 8 is clamped on the inner wall of one end of the slot 7, and the button 10 is installed on the other end of the slot 7 by bolts. On the inner wall, during operation, when the outer support 1 and the inner support 2 are deformed due to greater pressure, the inner support 2 squeezes the sleeve 5, and the sleeve 5 drives the button 10 in the slot 7 to move toward the block 8. The block 8 is fixed to the positioning ring 4 through the guide rod 9 and the connecting plate 6, so that the block 8 squeezes the button 10, and the button 10 is connected to an external alarm mechanism (such as a warning light, a warning bell, etc.), thereby issuing a danger alarm so that the highway tunnel can be blocked in time and maintenance work can be carried out on the deformed part. The sleeve 5 on the inner support 1 generates a pulling force on the block 8, and then generates a pulling force on the positioning ring 4 through the guide rod 9 and the connecting plate 6, so as to prevent the positioning ring 4 from collapsing and ensure the safety of people and vehicles in the tunnel.

[0024] During the construction of the surrounding rock support structure of the highway tunnel, the screw 12 is first driven into the inner side of the mountain from the inner side of the tunnel, and then the screw 12 is connected and fixed to the connecting rod 14 through the rotating shaft 13 and the rotating shaft 2 14 in turn, and then the connecting rod 14 is welded and fixed to the skeleton 3 in the outer support 1, and then the casting and construction work of the outer support 1 and the inner support 2 is carried out in turn, which can effectively utilize the screw 12 to connect and fix with the inner foundation stone of the mountain, and then effectively utilize the screw 12 to generate tension for the outer support 1, thereby improving the supporting strength of the outer support 1 to the rock and soil around the tunnel, and the screw 12 is connected to the skeleton 3 in the outer support 1 through the rotating shaft 13, the rotating shaft 2 14 and the connecting rod 11, so as to prevent the screw 12 from loosening and breaking. The outer support 1 is levered to ensure the safety of the outer support 1. When the outer support 1 and the inner support 2 are deformed due to greater pressure, the inner support 2 squeezes the sleeve 5, and the sleeve 5 drives the button 10 in the slot 7 to move toward the block 8. The block 8 is fixed to the positioning ring 4 through the guide rod 9 and the connecting plate 6, so that the block 8 squeezes the button 10, and the button 10 is connected to an external alarm mechanism (such as a warning light, a warning bell, etc.), thereby issuing a danger alarm so that the highway tunnel can be blocked in time and the deformed part can be repaired. The sleeve 5 on the inner support 1 generates a pulling force on the block 8, and then generates a pulling force on the positioning ring 4 through the guide rod 9 and the connecting plate 6 to prevent the positioning ring 4 from collapsing, thereby ensuring the safety of people and vehicles in the tunnel.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A highway tunnel surrounding rock support structure, comprising an outer support (1) and an inner support (2), characterized in that: A positioning assembly is installed on the inner side of the inner support (2), the positioning assembly comprises a positioning ring (4) and a clamping sleeve (5), a connecting assembly is installed on the positioning ring (4), the connecting assembly comprises a connecting plate (6) and a guide rod (9), an alarm assembly is installed on the inner side of the clamping sleeve (5), the alarm assembly comprises a clamping block (8) and a button (10), a reinforcement assembly is installed on the outer support (1), the reinforcement assembly comprises a connecting rod (11) and a screw rod (12), a rotating assembly is installed on the screw rod (12), the rotating assembly comprises a rotating shaft 1 (13) and a rotating shaft 2 (14).

2. A highway tunnel surrounding rock support structure according to claim 1, characterized in that: The outer support (1) is sleeved on the outer side of the inner support (2), and the inner sides of the outer support (1) and the inner support (2) are both installed with a frame (3), and the frame (3) is a steel frame.

3. A highway tunnel surrounding rock support structure according to claim 2, characterized in that: One end of the connecting rod (11) is welded to the frame (3) inside the outer support (1), and the other end of the connecting rod (11) extends to the outer side of the outer support (1).

4. A highway tunnel surrounding rock support structure according to claim 3, characterized in that: The rotating shaft 1 (13) is installed at one end of the screw rod (12), and the rotating shaft 2 (14) is installed at the other end of the connecting rod (11). The screw rod (12) is connected to the connecting rod (11) through the rotating shaft 1 (13) and the rotating shaft 2 (14), and the rotating shaft 1 (13) and the rotating shaft 2 (14) are perpendicular to each other.

5. A highway tunnel surrounding rock support structure according to claim 1, characterized in that: The bottom of the positioning ring (4) is mounted on the inner wall of the bottom of the inner support (2) by means of bolts, and the inner wall of the inner support (2) is sleeved on the outer side of the positioning ring (4).

6. A highway tunnel surrounding rock support structure according to claim 5, characterized in that: The clamping sleeve (5) is mounted on the inner wall of the inner support (2) by means of bolts, and the connecting plate (6) is mounted on the outer side of the positioning ring (4) by means of bolts. The clamping sleeve (5) and the connecting plate (6) are evenly distributed on the outer side of the positioning ring (4).

7. A highway tunnel surrounding rock support structure according to claim 6, characterized in that: A clamping groove (7) is provided on the inner side of the clamping sleeve (5), the clamping block (8) is clamped on the inner side of the clamping groove (7), one end of the guide rod (9) is welded to the clamping block (8), and the other end of the guide rod (9) passes through the clamping groove (7) and is welded to the connecting plate (6).

8. A highway tunnel surrounding rock support structure according to claim 7, characterized in that: The clamping block (8) is clamped on the inner wall of one end of the clamping slot (7), and the button (10) is installed on the inner wall of the other end of the clamping slot (7) by means of bolts.

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