A shield tunnel reinforcement device

Abstract

This utility model belongs to the field of tunnel construction technology, specifically a shield tunnel reinforcement device, including multiple support frames. Multiple fixing blocks are fixedly connected to the outer side of each support frame, and multiple hydraulic rods are fixedly connected to one side of each support frame. First, after the concrete pipe piles are assembled inside the shield tunnel, the support frames are placed inside the shield tunnel. After the hydraulic rods are activated, they push the support frames to move, extending each support frame. The fixing blocks follow the movement of the support frames, fitting against the pipe segments on the inner wall of the shield tunnel. Concrete slurry is injected into the pipe segments and the inner wall of the shield tunnel. The fixing blocks support and fix each pipe segment, making the pipe segments fit more closely to the inner wall of the shield tunnel. After the concrete slurry dries, the above operation is repeated to support and fix the pipes at other locations inside the shield tunnel where no pipe segments have been installed. After all pipe segments are installed, the hydraulic rods are activated again to bring the support frames together and remove them from the inner wall of the shield tunnel.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction technology, specifically a shield tunnel reinforcement device. Background Technology

[0002] The shield tunneling method is a fully mechanized construction method in the underground excavation method. It involves advancing a shield machine in the ground, using the shield shell and segments to support the surrounding rock and prevent collapse within the tunnel. At the same time, a cutting device is used to excavate the soil in front of the excavation face, and the soil is transported out of the tunnel by excavation machinery. The shield tunneling process produces a shield tunnel, and the inner wall of the shield tunnel is supported by assembled precast concrete segments.

[0003] In existing technologies, concrete segments are used in shield tunnels and installed on the tunnel walls. The segments are typically connected by filling them with concrete; however, gaps often form between the segments and the tunnel walls, preventing a tight fit. In such cases, the concrete is prone to loosening, resulting in an unstable installation between the tunnel walls and the segments.

[0004] Therefore, this utility model provides a shield tunnel reinforcement device. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A shield tunnel reinforcement device of this utility model includes multiple support frames; multiple fixing blocks are fixedly connected to the outer side of each support frame, and multiple hydraulic rods are fixedly connected to one side of each support frame. During operation, after the concrete pipe piles are first assembled inside the shield tunnel, the support frames are placed inside the shield tunnel. After the hydraulic rods are activated, they push the support frames to move, extending each support frame. The fixing blocks follow the movement of the support frames, fitting against the pipe segments on the inner wall of the shield tunnel. Concrete grout is injected into the pipe segments and the inner wall of the shield tunnel. The fixing blocks support and fix each pipe segment, making the pipe segments fit more closely to the shield tunnel. On the inner wall, after the concrete grout has dried completely, repeat the above operation to support and fix the pipe at other uninstalled segments inside the shield tunnel. After all segments are installed, restart the hydraulic rods to bring the support frames together and remove them from the inner wall of the shield tunnel. By setting the hydraulic rods to move the support frames, the tension and aggregation of each support frame can be achieved. This not only extends the support and fixation of the segments inside the shield tunnel, but also facilitates storage and saves space. The fixing blocks further support and fix the segments, making the segments more tightly and firmly bonded to the inner wall of the shield tunnel, reducing the phenomenon of loosening during the drying process of the concrete grout, which could lead to unstable segment installation.

[0007] Preferably, the inner wall of the support frame is connected to an external air pipe, and one side of the fixing block is provided with an air hole. The air hole is connected to the external air pipe. During operation, the external air pipe is connected to hot air, and the air hole conducts hot air. The hot air acts on the tunnel segment, accelerating the drying rate of the concrete slurry on one side of the tunnel segment and improving the installation efficiency of the tunnel segment. By setting the external air pipe and air hole, hot air is conducted and circulates in the shield tunnel, reducing excessive internal moisture and preventing damage to the shield machine and other machinery. Furthermore, the hot air acting on the tunnel segment can accelerate the drying rate of the concrete slurry, thereby improving the installation efficiency of the tunnel segment.

[0008] Preferably, a dust cover is provided in the middle of the air hole, and the dust cover is fixedly connected to the air hole. During operation, the dust cover will reduce the amount of debris falling into the air hole and clogging the air hole, which will lead to poor air circulation and thus affect the drying rate of the concrete slurry.

[0009] Preferably, the top of the hydraulic rod is provided with an elastic waterproof cloth, the two ends of which are fixedly connected to the support frame. The elastic waterproof cloth is arc-shaped. During operation, the elastic waterproof cloth expands with the movement of the support frame to protect the inside of the support frame, reducing the harm to the health of construction workers caused by falling rocks or soil debris above the shield tunnel. The arc shape of the elastic waterproof cloth can guide falling debris such as gravel to slide to both sides of the tunnel, reducing the accumulation of debris on the elastic waterproof cloth and preventing deformation or even damage to the elastic waterproof cloth.

[0010] Preferably, the elastic waterproof cloth is provided with a support rod at the bottom, and the two ends of the support rod are fixedly connected to the support frame. During operation, the support rod supports the elastic waterproof cloth and pushes it upward, reducing the impact of large falling rocks or debris on the elastic waterproof cloth, which could cause it to collapse downward and thus affect the construction.

[0011] Preferably, the hydraulic rod is provided with an elastic cloth on its outer side. The two ends of the elastic cloth are fixedly connected to the support frame. During operation, the elastic cloth protects the hydraulic rod, reducing the amount of debris and dust that may cause damage to the hydraulic rod. It also reduces the occurrence of falling objects hitting the hydraulic rod and causing damage to it.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The shield tunnel reinforcement device of this utility model uses hydraulic rods to move the support frames, thereby stretching and converging the various support frames. This not only extends the support and fixation of the tunnel segments inside the shield tunnel, but also facilitates storage and saves space. The fixing blocks further support and fix the tunnel segments, making the tunnel segments more tightly and firmly bonded to the inner wall of the shield tunnel. This reduces the phenomenon of loosening during the drying process of the concrete slurry, which could lead to unstable installation of the tunnel segments.

[0014] 2. The shield tunnel reinforcement device of this utility model conducts heat by setting external air pipes and air holes. The heat circulates in the shield tunnel, reducing the impact of excessive internal moisture on the shield machine and other mechanical components. Furthermore, the heat acts on the tunnel segments, which can accelerate the drying rate of the concrete slurry and thus improve the efficiency of tunnel segment installation. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a schematic diagram of the support frame in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the fixing block in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the elastic waterproof fabric in this utility model;

[0020] Figure 5 This is a schematic diagram of the elastic fabric in this utility model;

[0021] In the diagram: 1. Support frame; 11. Fixing block; 12. Hydraulic rod; 2. External air pipe; 21. Air hole; 3. Dust cover; 4. Elastic waterproof cloth; 5. Support rod; 6. Elastic cloth. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 2As shown in the embodiment of this utility model, a shield tunnel reinforcement device includes multiple support frames 1; multiple fixing blocks 11 are fixedly connected to the outer side of each support frame 1, and multiple hydraulic rods 12 are fixedly connected to one side of each support frame 1. During operation, after the concrete pipe piles are assembled inside the shield tunnel, the support frames 1 are placed inside the shield tunnel. After the hydraulic rods 12 are activated, they push the support frames 1 to move, extending each support frame 1. The fixing blocks 11 follow the movement of the support frames 1, conforming to the pipe segments on the inner wall of the shield tunnel. Concrete grout is injected into the pipe segments and the inner wall of the shield tunnel. The fixing blocks 11 support and fix each pipe segment, making the pipe segments fit more closely to the inner wall of the shield tunnel. After the concrete grout dries completely, repeat the above operation to support and fix the pipe at other uninstalled segments inside the shield tunnel. After all segments are installed, restart the hydraulic rod 12 to bring the support frame 1 together and remove it from the inner wall of the shield tunnel. By setting the hydraulic rod 12 to move the support frame 1, the tension and aggregation of each support frame 1 can be achieved. This can extend the support and fixation of the segments inside the shield tunnel, facilitate storage, and save space. The fixing block 11 further supports and fixes the segments, making the segments more tightly and firmly bonded to the inner wall of the shield tunnel, reducing the phenomenon of loosening during the drying process of the concrete grout, which could lead to unstable segment installation.

[0024] like Figures 1 to 3 As shown, the inner wall of the support frame 1 is connected to an external air pipe 2, and one side of the fixing block 11 is provided with an air hole 21. The air hole 21 is connected to the external air pipe 2. During operation, the external air pipe 2 is connected to hot air, and the air hole 21 conducts the hot air. The hot air acts on the tunnel segment, which accelerates the drying rate of the concrete slurry on one side of the tunnel segment and improves the installation efficiency of the tunnel segment. By setting the external air pipe 2 and the air hole 21, the hot air is conducted and circulates in the shield tunnel, which reduces the internal moisture and reduces the damage to the shield machine and other machinery. Furthermore, the hot air acts on the tunnel segment, which can accelerate the drying rate of the concrete slurry and thus improve the installation efficiency of the tunnel segment.

[0025] like Figures 1 to 3 As shown, a dust cover 3 is provided in the middle of the air hole 21. The dust cover 3 is fixedly connected to the air hole 21. During operation, the dust cover 3 will reduce the amount of debris falling into the air hole 21 and clogging the air hole 21, which will lead to poor air circulation and thus affect the drying rate of the concrete slurry.

[0026] like Figures 1 to 4As shown, the top of the hydraulic rod 12 is provided with an elastic waterproof cloth 4. The two ends of the elastic waterproof cloth 4 are fixedly connected to the support frame 1. The elastic waterproof cloth 4 is arc-shaped. When working, the elastic waterproof cloth 4 extends with the movement of the support frame 1 to protect the inside of the support frame 1 and reduce the harm to the health of construction workers caused by falling rocks or soil debris above the shield tunnel. The arc shape of the elastic waterproof cloth 4 can guide falling debris such as gravel to slide to both sides of the tunnel, reducing the accumulation of debris on the elastic waterproof cloth 4 and preventing deformation or even damage to the elastic waterproof cloth 4.

[0027] like Figures 1 to 4 As shown, the elastic waterproof cloth 4 is provided with a support rod 5 at the bottom. The two ends of the support rod 5 are fixedly connected to the support frame 1. During operation, the support rod 5 supports the elastic waterproof cloth 4 and pushes the elastic waterproof cloth 4 upward to reduce the impact of large falling rocks or debris on the elastic waterproof cloth 4, which could cause it to collapse downward and thus affect the construction.

[0028] like Figures 1 to 5 As shown, the hydraulic rod 12 is provided with an elastic cloth 6 on its outer side. The two ends of the elastic cloth 6 are fixedly connected to the support frame 1. During operation, the elastic cloth 6 protects the hydraulic rod 12, reducing the amount of debris and dust that may cause damage to the hydraulic rod 12. It also reduces the occurrence of falling objects hitting the hydraulic rod 12 and causing damage to the hydraulic rod 12.

[0029] Working principle: First, after the concrete pipe piles are assembled inside the shield tunnel, the support frame 1 is placed inside the shield tunnel. After the hydraulic rod 12 is activated, it pushes the support frame 1 to move, extending each support frame 1. The fixing block 11 moves with the support frame 1, fitting against the pipe segments on the inner wall of the shield tunnel. Concrete grout is injected into the pipe segments and the inner wall of the shield tunnel. The fixing block 11 supports and fixes each pipe segment, making the pipe segments fit more closely to the inner wall of the shield tunnel. After the concrete grout dries completely, the above operation is repeated to support and fix the pipes at other locations inside the shield tunnel where no pipe segments have been installed. This process continues until all pipe segments are installed. Reactivating hydraulic rod 12 brings the support frames 1 together, allowing them to be removed from the inner wall of the shield tunnel. By using hydraulic rod 12 to move the support frames 1, the individual support frames 1 are stretched and brought together, extending the support and fixation of the tunnel segments inside the shield tunnel, facilitating storage, and saving space. Fixing block 11 further supports and fixes the segments, making the connection between the segments and the inner wall of the shield tunnel more tight and secure, reducing the possibility of loosening during the drying process of the concrete slurry, which could lead to unstable segment installation. External air pipe 2 connects to hot air, and air holes 21 conduct the heat. The hot air acts on the segments, accelerating the drying rate of the concrete slurry on one side of the segments. To improve the installation efficiency of tunnel segments, external air pipes 2 and air vents 21 are installed to conduct heat. This heat circulates within the shield tunnel, reducing excessive internal moisture and preventing damage to the tunnel boring machine and other machinery. Furthermore, the heat acting on the tunnel segments accelerates the drying rate of the concrete slurry, thus improving installation efficiency. The dust cover 3 reduces debris falling into the air vents 21, preventing blockages and ensuring proper heat flow, which would otherwise affect the drying rate of the concrete slurry. The elastic waterproof cloth 4 extends with the movement of the support frame 1, protecting the interior of the support frame 1 and reducing the risk of falling rocks or debris from above the shield tunnel to the health of construction workers. The elastic waterproof cloth 4 is designed in an arc shape to guide falling debris such as gravel to slide to both sides of the tunnel, reducing the accumulation of debris on the elastic waterproof cloth 4 and preventing deformation or even damage. The support rod 5 supports the elastic waterproof cloth 4 and pushes it upward to reduce the impact of large falling rocks or debris on the elastic waterproof cloth 4, which could cause it to collapse downward and affect the construction. The elastic cloth 6 protects the hydraulic rod 12, reducing the amount of debris and dust that could damage the hydraulic rod 12 and also reducing the impact of falling objects on the hydraulic rod 12.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A shield tunnel reinforcement device comprising a plurality of support frames (1); characterized in that: Multiple fixing blocks (11) are fixedly connected to the outside of the support frame (1), and multiple hydraulic rods (12) are fixedly connected to one side of the support frame (1).

2. The shield tunnel reinforcing device according to claim 1, characterized in that: The inner wall of the support frame (1) is connected to an external air pipe (2), and the fixed block (11) has an air hole (21) on one side, which is connected to the air pipe (21).

3. The shield tunnel reinforcing device according to claim 2, characterized in that: A dust cover (3) is provided in the middle of the air hole (21), and the dust cover (3) is fixedly connected to the air hole (21).

4. The shield tunnel reinforcing device according to claim 3, characterized in that: The top of the hydraulic rod (12) is provided with an elastic waterproof cloth (4), and the two ends of the elastic waterproof cloth (4) are fixedly connected to the support frame (1). The elastic waterproof cloth (4) is set to be arc-shaped.

5. The shield tunnel reinforcing device according to claim 4, characterized in that: The elastic waterproof cloth (4) is provided with a support rod (5) at the bottom, and the two ends of the support rod (5) are fixedly connected to the support frame (1).

6. The shield tunnel reinforcement device according to claim 5, characterized in that: The hydraulic rod (12) is provided with an elastic cloth (6) on its outer side, and the two ends of the elastic cloth (6) are fixedly connected to the support frame (1).

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