Tunnel expansion joint seepage-proofing and leaking stoppage device

Abstract

The invention provides a tunnel expansion joint seepage-proofing and leakage-stopping device. The problems that in the prior art, when an expansion joint is filled with polyurea geotextile, time and labor are consumed, filling is uneven, cavitation bubbles are likely to occur, and when the expansion joint at the top of a tunnel is filled, cooperation of multiple persons is needed are effectively solved. According to the technical scheme, the device comprises a U-shaped plate, soaked geotechnical cloth penetrates through a cavity of the U-shaped plate from left to right, a rocker arm is arranged above the U-shaped plate, the right end of the rocker arm inclines upwards, a pushing structure is hinged to the lower side of the rocker arm, and a rolling structure is arranged on the right side of the pushing structure; the pushing structure comprises a fixing rod, a pushing rod is hinged to the lower end of the fixing rod, and an auxiliary rod is arranged on the right side of the lower end of the pushing rod. The rolling structure comprises a mounting frame, wheels are hinged to the mounting frame, a connecting rod is hinged to the upper end of the mounting frame, and the upper end of the connecting rod is hinged to the rocker arm through a torsional spring; when the rocker arm swings back and forth, the wheel rolls the folded geotextile on the right side of the U-shaped plate back and forth.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel post-maintenance and repair, in particular to a tunnel expansion joint anti-seepage and leakage blocking device. Background Art

[0002] During the inspection and maintenance of the tunnel, it is necessary to perform slotting maintenance on the seepage and leakage parts of the tunnel sidewall and liner. For cracks with a width of ≥0.5mm, the slots are filled and the surface is sealed before the pressure injection repair method of caulking glue is used. Among them, the expansion joint (deformation joint) is the key anti-seepage part. Taking the expansion joint as an example, the function and role of the expansion joint make it impossible to fill it with rigid materials, but at the same time, the expansion joint must be effectively blocked to prevent water seepage. In tunnel construction, expansion joints need to be waterproofed and sealed. At present, in the latest process: first clean the expansion joint, then insert the geotextile strip soaked in polyurea into the expansion joint, and pre-bury a grouting needle every 1m. After the polyurea on the geotextile solidifies, inject acrylate grouting into the grouting needle, and the grouting amount per meter is 20kg. In this process, the process of plugging the geotextile strips mainly relies on manual filling, and the geotextile is pressed tightly with a wooden stick or other tools. The process is cumbersome and easy to stick to the hands. Not only is the pressing uneven, but cavitation may even occur, causing the slurry to leak out from the cavitation site during the grouting process. In addition, the most important thing is that since the soaked geotextile is soft, when filling the expansion joints on the top side walls of the tunnel, it often requires at least two people to cooperate, which is time-consuming and labor-intensive, otherwise it is easy to fall.

[0003] In the prior art, a tunnel anti-seepage and plugging device and a plugging method are disclosed in Chinese patent document CN112610247B, in which a cloth strip is also used to plug the leakage gap. However, during use, the cloth strip needs to be pressed first and then polyurea is smeared or stained on the cloth strip. This method is only suitable for thinner and narrower cracks, and is more difficult for expansion joints with larger widths. First, polyurea cannot completely penetrate into the geotextile in a short time, and leakage will still occur after a period of time. Second, this structure can only be used for expansion joints on the ground, and is not suitable for the working conditions of the side walls and top of the tunnel.

[0004] A tunnel expansion joint anti-seepage and leakage plugging device is now provided, which can enable the geotextile to fully fill the entire expansion joint to ensure that no leakage occurs during subsequent grouting. It can not only adapt to the expansion joint sealing on the ground, but also adapt to the waterproof construction of the expansion joints on the side walls and top of the tunnel, and can prevent the generation of hollows and cavitations to the greatest extent, ensuring the waterproof effect of the expansion joint. It is also suitable for the repair of wider gaps in old tunnels. The operation is simple and the construction quality is guaranteed. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a tunnel expansion joint anti-seepage and leakage plugging device, which effectively solves the problems in the prior art that filling the expansion joint with polyurea geotextile is time-consuming and labor-intensive, the filling is uneven, cavitation is easy to occur, and the cooperation of multiple people is required when filling the expansion joint at the top of the tunnel.

[0006] The technical solution is to include a U-shaped plate with an opening upward, the soaked geotextile passes through the cavity of the U-shaped plate from left to right, a rocker arm is arranged above the U-shaped plate, the left end of the rocker arm is hinged in the cavity of the U-shaped plate, the right end of the rocker arm is tilted upward, a top-pushing structure is hinged on the lower side of the middle of the rocker arm, and a rolling structure is arranged on the right side of the top-pushing structure; The pushing structure includes a fixed rod, the upper end of the fixed rod is fixed to the lower side of the middle part of the rocker arm, the lower end of the fixed rod is hinged with a pushing rod through a torsion spring, the lower end of the pushing rod is inclined to the right, a secondary rod is fixed to the right side of the lower end of the pushing rod, and a hook is provided at one end of the secondary rod away from the pushing rod, and the tip of the hook points to the right; when the rocker arm swings downward, the lower end of the pushing rod and the tip of the hook push the geotextile to the right and gradually break away from the U-shaped plate and enter the expansion joint, and always fits the bottom in the process of the lower end of the pushing rod moving to the right, and at the same time, the hook gradually moves upward, so that a part of the geotextile can be pulled up and folded in the expansion joint, and when the rocker arm swings upward, the pushing rod and the hook gradually return to their original state, but the geotextile does not move; The rolling structure includes a mounting frame, a wheel is hinged on the mounting frame, a connecting rod is hinged on the upper end of the mounting frame, and the upper end of the connecting rod is hinged to the rocker arm via a torsion spring; when the rocker arm swings back and forth, the wheel rolls back and forth the folded geotextile on the right side of the U-shaped plate.

[0007] Furthermore, a rotating shaft is provided on the upper side of the left end of the U-shaped plate, and two small plates corresponding to the rotating shaft are fixed on the U-shaped plate, and the ends of the rotating shaft are rotatably connected to the small plates.

[0008] Furthermore, an arc-shaped plate is fixed to the left end of the U-shaped plate, the left end of the arc-shaped plate is fixed together with the U-shaped plate, and the right end of the arc-shaped plate is placed in the U-shaped plate chamber.

[0009] Furthermore, the upper ends of the two side plates of the U-shaped plate are folded outwards to form folded edges.

[0010] Furthermore, there are two push rods, which are symmetrically arranged front to back. The lower end of the fixed rod is hinged with a connecting block via a torsion spring, and the connecting block can swing left and right. The upper ends of the two push rods are hinged with the connecting block via a torsion spring; when the rocker arm swings downward, the two push rods move to the right at the same time and move away from each other, so that the geotextile can contact both sides of the expansion joint.

[0011] Furthermore, there are two push rods, which are symmetrically arranged front to back. The lower end of the fixed rod is hinged with an insertion rod through a torsion spring. There is a hollow cylinder on the lower side of the insertion rod. The hollow cylinder can move along the insertion rod. A compression spring is connected between the hollow cylinder and the lower end of the fixed rod. A rack is fixed to the lower end of the insertion rod. The upper end of the push rod is hinged to the lower end of the hollow cylinder, and a gear is fixed to the upper end of the push rod. When the rocker arm swings downward, the hollow cylinder gradually approaches the fixed rod. At this time, the rack drives the two gears to rotate, and the rotation of the gear causes the lower end of the push rod to separate to both sides, forcing the geotextile to contact both side walls of the expansion joint.

[0012] Furthermore, there are three wheels, one of which is located at the right end of the mounting frame, and the other two wheels are located at the left end of the mounting frame and are coaxial; the three wheels are arranged in a triangle, and the trajectory of the wheel on the right side overlaps with the trajectory of the other two wheels.

[0013] The structure of the present invention is ingenious, and can make the geotextile fully fill the entire expansion joint, ensuring that no leakage will occur during the subsequent grouting. It can not only adapt to the expansion joint sealing on the ground, but also adapt to the waterproof construction of the expansion joints on the side walls and top of the tunnel, and can prevent the generation of hollowing and cavitation to the greatest extent, ensuring the waterproof effect of the expansion joint. At the same time, it is also suitable for the repair of wider gaps in old tunnels. The operation is simple and the construction quality is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall schematic diagram of the present invention.

[0015] Figure 2 It is the front view of the present invention.

[0016] Figure 3 The present invention is used in the state Figure 1 .

[0017] Figure 4 The present invention is used in the state Figure 2 .

[0018] Figure 5 for Figure 3 Middle AA section view.

[0019] Figure 6 It is a schematic diagram of the installation of the push rod when the gear rack structure is adopted.

[0020] Figure 7 It is a structural diagram of the U-shaped plate in the present invention.

[0021] Figure 8 It is a schematic diagram of the core structure of the present invention.

[0022] Fig. 9 It is a structural diagram of the push rod and the auxiliary rod in the present invention.

[0023] Fig.10 It is a schematic diagram of the rolling structure in the present invention.

[0024] Fig.11 It is a bottom view of the rolling structure in the present invention. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0026] Depend on Figures 1 to 11 The present invention comprises a U-shaped plate 1 with an opening upward, the soaked geotextile passes through the chamber of the U-shaped plate 1 from left to right, a rocker arm 2 is arranged above the U-shaped plate 1, the left end of the rocker arm 2 is hinged in the chamber of the U-shaped plate 1, the right end of the rocker arm 2 is tilted upward, a top-pushing structure is hinged on the lower side of the middle part of the rocker arm 2, and a rolling structure is arranged on the right side of the top-pushing structure; The pushing structure includes a fixed rod 3, the upper end of the fixed rod 3 is fixed to the lower side of the middle part of the rocker arm 2, the lower end of the fixed rod 3 is hinged with a pushing rod 4 through a torsion spring, the lower end of the pushing rod 4 is inclined to the right, and a secondary rod 5 is fixed to the right side of the lower end of the pushing rod 4, and a hook 6 is provided at one end of the secondary rod 5 away from the pushing rod 4, and the tip of the hook 6 faces right; when the rocker arm 2 swings downward, the lower end of the pushing rod 4 and the tip of the hook 6 push the geotextile to the right and gradually break away from the U-shaped plate 1 and enter the expansion joint, and the lower end of the pushing rod 4 always fits the bottom in the process of moving to the right, and at the same time, the hook 6 gradually moves upward, so that a part of the geotextile can be pulled up and folded in the expansion joint, and when the rocker arm 2 swings upward, the pushing rod 4 and the hook 6 gradually return to their original state, but the geotextile does not move; The rolling structure includes a mounting frame 7, a wheel 8 is hinged on the mounting frame 7, a connecting rod is hinged on the upper end of the mounting frame 7, and the upper end of the connecting rod is hinged to the rocker arm 2 via a torsion spring; when the rocker arm 2 swings back and forth, the wheel 8 rolls back and forth to form a folded geotextile on the right side of the U-shaped plate 1.

[0027] In order to temporarily store the geotextile soaked in polyurea on the left side of the U-shaped plate 1, a shaft 9 is provided on the upper left end of the U-shaped plate 1. Two small plates 10 corresponding to the shaft 9 are fixed on the U-shaped plate 1, and the ends of the shaft 9 are rotatably connected to the small plates 10.

[0028] In order to allow the geotextile to smoothly enter the left end of the U-shaped plate 1 , a curved plate 11 is fixed to the left end of the U-shaped plate 1 . The left end of the curved plate 11 is fixed to the U-shaped plate 1 , and the right end of the curved plate 11 is placed in the chamber of the U-shaped plate 1 .

[0029] In order to enable the U-shaped plate 1 to be stuck on the expansion joint, the upper ends of the two side plates of the U-shaped plate 1 are folded outwards to form folded edges.

[0030] In order to make the geotextile contact with both side walls of the expansion joint and ensure the uniformity of geotextile filling, there are two push rods 4, which are symmetrically arranged front to back, and the lower end of the fixed rod 3 is hinged with a connecting block 12 through a torsion spring, and the connecting block 12 can swing left and right. The upper ends of the two push rods 4 are hinged to the connecting block 12 through a torsion spring; when the rocker arm 2 swings downward, the two push rods 4 move to the right at the same time and move away from each other, so that the geotextile can contact both sides of the expansion joint.

[0031] In order to make the geotextile contact with both side walls of the expansion joint and ensure the uniformity of geotextile filling, there are two push rods 4, which are symmetrically arranged front and back. The lower end of the fixed rod 3 is hinged with an insertion rod 13 through a torsion spring. There is a hollow cylinder 14 on the lower side of the insertion rod 13. The hollow cylinder 14 can move along the insertion rod 13. A compression spring is connected between the hollow cylinder 14 and the lower end of the fixed rod 3. A rack 15 is fixed to the lower end of the insertion rod 13. The upper end of the push rod 4 is hinged at the lower end of the hollow cylinder 14. A gear 16 is fixed to the upper end of the push rod 4. When the rocker arm 2 swings downward, the hollow cylinder 14 gradually approaches the fixed rod 3. At this time, the rack 15 drives the two gears 16 to rotate. The rotation of the gear 16 causes the lower end of the push rod 4 to separate to both sides, forcing the geotextile to contact both side walls of the expansion joint.

[0032] In order to enable the rolling structure to compact the geotextile, there are three wheels 8, one of which is located at the right end of the mounting frame 7, and the other two wheels 8 are located at the left end of the mounting frame 7 and are coaxial; the three wheels 8 are arranged in a triangle, and the trajectory of the wheel 8 on the right side overlaps with the trajectories of the other two wheels 8.

[0033] It is worth noting that in the present invention, torsion springs are used in many places, which can make each component have sufficient deformation and ensure the uniformity of filling; the present invention can form the pre-prepared geotextile strips into a regular folded shape in the expansion joint, and then this part of the geotextile is rolled again and again by the rolling structure to make it dense, and try to avoid hollowing or bubbling, so as to ensure the subsequent grouting work. During use, the U-shaped plate 1 is pressed tightly against the expansion joint and fixed, so as to ensure its work quality. After the right side of the U-shaped plate 1 is filled densely, the U-shaped plate 1 can move a distance to the left, and then work in a cycle until the entire expansion joint is completely filled with the geotextile soaked in polyurea.

[0034] Before the expansion joint is filled with geotextile, the pre-made geotextile is soaked in a polyurea or acrylate solution of a suitable proportion. After the geotextile is fully soaked, it is wound around the rotating shaft 9; when filling the geotextile, the U-shaped plate 1 is placed in the expansion joint and pressed to fix it. At this time, one end of the geotextile is passed through the cavity of the U-shaped plate 1 from left to right, and the end of the geotextile is manually folded and stuffed into the expansion joint on the right side of the U-shaped plate 1, and then the rocker arm 2 is pressed downward. The rocker arm 2 drives the lower end of the push rod 4 to tie the geotextile through the fixed rod 3. The geotextile moves to the right with the lower end of the push rod 4 and gradually separates from the U-shaped plate 1. At the same time, the hook 6 on the auxiliary rod 5 also hooks the geotextile and moves to the upper right, thus forming a fold to achieve filling; in this process, the rocker arm 2 moves to the right with the rolling structure through the connecting rod, and the rolling structure rolls the geotextile in the expansion joint to make it gradually dense; when the rocker arm 2 is lifted upward, each component returns to its original state under the action of its respective torsion spring.

[0035] During the downward swinging of the rocker arm 2, the vertical rod moves downward and forces the lower end of the push rod 4 to move to the right. At this time, the compression spring on the insertion rod 13 is compressed, and the hollow tube 14 gradually approaches the vertical rod. At this time, the rack 15 drives the two gears 16 to rotate. The rotation of the gear 16 causes the lower end of the push rod 4 to separate to both sides, forcing the geotextile to contact both side walls of the expansion joint.

[0036] During the reciprocating movement of the rolling structure, the wheel 8 on the right is in the middle of the expansion joint, and the two wheels 8 on the left are on both sides of the expansion joint. The three wheels 8 are distributed in a triangle, so that the geotextile can be tighter and effectively prevent the formation of hollows.

[0037] During tunnel inspection and maintenance, water seepage areas need to be slotted and filled for surface sealing. The slots are similar in structure to expansion joints, so this device can also be used for slotting and filling operations.

[0038] The structure of the present invention is ingenious, and can make the geotextile fully fill the entire expansion joint, ensuring that no leakage will occur during the subsequent grouting. It can not only adapt to the expansion joint sealing on the ground, but also adapt to the waterproof construction of the expansion joints on the side walls and top of the tunnel, and can prevent the generation of hollowing and cavitation to the greatest extent, ensuring the waterproof effect of the expansion joint. At the same time, it is also suitable for the repair of wider gaps in old tunnels. The operation is simple and the construction quality is guaranteed.

Claims

1. A tunnel expansion joint anti-seepage and leakage blocking device, characterized in that: It comprises a U-shaped plate (1) with an opening upward, wherein the soaked geotextile passes through the chamber of the U-shaped plate (1) from left to right, wherein a rocker arm (2) is provided above the U-shaped plate (1), wherein the left end of the rocker arm (2) is hinged in the chamber of the U-shaped plate (1), the right end of the rocker arm (2) is tilted upward, a top-pushing structure is hinged on the lower side of the middle of the rocker arm (2), and a rolling structure is provided on the right side of the top-pushing structure; The pushing structure comprises a fixed rod (3), the upper end of the fixed rod (3) is fixed to the lower side of the middle part of the rocker arm (2), the lower end of the fixed rod (3) is hinged with a pushing rod (4) via a torsion spring, the lower end of the pushing rod (4) is inclined to the right, a secondary rod (5) is fixed to the right side of the lower end of the pushing rod (4), and a hook (6) is provided at one end of the secondary rod (5) away from the pushing rod (4), and the tip of the hook (6) is facing rightward; when the rocker arm (2) swings downward, the lower end of the pushing rod (4) and the tip of the hook (6) push the geotextile to the right and gradually separate from the U-shaped plate (1) and enter the expansion joint; in the process of the lower end of the pushing rod (4) moving to the right, it always contacts the bottom; at the same time, the hook (6) gradually moves upward, so that a part of the geotextile can be pulled up and formed into a folded shape in the expansion joint; when the rocker arm (2) swings upward, the pushing rod (4) and the hook (6) gradually return to their original state, but the geotextile does not move; According to claim 1, a tunnel expansion joint anti-seepage and plugging device is characterized in that the rolling structure includes a mounting frame (7), a wheel (8) is hinged on the mounting frame (7), a connecting rod is hinged on the upper end of the mounting frame (7), and the upper end of the connecting rod is hinged to the rocker arm (2) via a torsion spring; when the rocker arm (2) swings back and forth, the wheel (8) rolls back and forth to form a folded geotextile on the right side of the U-shaped plate (1).

2. A tunnel expansion joint anti-seepage and plugging device according to claim 1, characterized in that: The upper left side of the U-shaped plate (1) is provided with a rotating shaft (9), and two small plates (10) corresponding to the rotating shaft (9) are fixed on the U-shaped plate (1), and the ends of the rotating shaft (9) are rotatably connected to the small plates (10).

3. A tunnel expansion joint anti-seepage and plugging device according to claim 2 or 3, characterized in that: The left end of the U-shaped plate (1) is fixed with an arc-shaped plate (11), the left end of the arc-shaped plate (11) is fixed together with the U-shaped plate (1), and the right end of the arc-shaped plate (11) is placed in the cavity of the U-shaped plate (1).

4. The tunnel expansion joint anti-seepage and plugging device according to claim 1, characterized in that: The upper ends of the two side plates of the U-shaped plate (1) are folded outwards to form folded edges.

5. The tunnel expansion joint anti-seepage and leakage blocking device according to claim 1, characterized in that: There are two push rods (4), which are symmetrically arranged front and back. The lower end of the fixed rod (3) is hinged with a connecting block (12) via a torsion spring. The connecting block (12) can swing left and right. The upper ends of the two push rods (4) are hinged with the connecting block (12) via a torsion spring. When the rocker arm (2) swings downward, the two push rods (4) move rightward and away from each other at the same time, so that the geotextile can contact both sides of the expansion joint.

6. The tunnel expansion joint anti-seepage and plugging device according to claim 1, characterized in that: There are two push rods (4), which are symmetrically arranged front and back. The lower end of the fixed rod (3) is hinged with an insertion rod (13) via a torsion spring. The lower side of the insertion rod (13) is provided with a hollow cylinder (14). The hollow cylinder (14) can move along the insertion rod (13). A compression spring is connected between the hollow cylinder (14) and the lower end of the fixed rod (3). A rack (15) is fixed to the lower end of the insertion rod (13). The upper end of the push rod (4) is hinged to the lower end of the hollow cylinder (14). A gear (16) is fixed to the upper end of the push rod (4). When the rocker arm (2) swings downward, the hollow cylinder (14) gradually approaches the fixed rod (3). At this time, the rack (15) drives the two gears (16) to rotate. The rotation of the gear (16) causes the lower end of the push rod (4) to separate to both sides, forcing the geotextile to contact both side walls of the expansion joint.

7. A tunnel expansion joint anti-seepage and plugging device according to claim 6 or 7, characterized in that: There are three wheels (8), one of which is located at the right end of the mounting frame (7), and the other two wheels (8) are located at the left end of the mounting frame (7) and are coaxial; the three wheels (8) are arranged in a triangle, and the track of the wheel (8) on the right side overlaps with the tracks of the other two wheels (8).

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