Waterproof structure for open excavation repair of existing tunnel vault

Abstract

The utility model relates to the technical field of tunnel repair, in particular to a waterproof structure for open excavation repair of an existing tunnel vault, which comprises a tunnel body arranged in a mountain. The repairing groove is formed in the mountain body and located above the tunnel body; the cast-in-place layer is arranged at the damaged position of the top of the tunnel body and located in the repairing groove; the waterproof plate is arranged in the repairing groove and located above the cast-in-place layer; the locking assembly is arranged on the side wall of the repairing groove and is suitable for pressing the waterproof plate on the cast-in-place layer; and the backfilling layer is arranged in the repairing groove and located above the waterproof plate. According to the waterproof structure for open-cut repair of the existing tunnel vault, the repair groove is dug in the mountain, so that the damaged position of the top of the tunnel body above the tunnel body can be repaired conveniently, repair is achieved through the cast-in-place layer, after pouring of the cast-in-place layer is completed, the waterproof plate is placed on the cast-in-place layer, infiltration of rainwater is reduced, and the service life of the tunnel vault is prolonged. And therefore, the repaired part is protected, and the possibility that the repaired part is damaged again is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel repair, in particular to a waterproof structure for open-cut repair of an existing tunnel vault. Background Art

[0002] When cracks or other damage appear on the tunnel vault, it generally needs to be repaired, but after the repair, it is very susceptible to the effects of moisture and other conditions, so the repaired area needs to be protected. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to solve the technical problem in the prior art, the utility model provides a waterproof structure for open-cut repairing of an existing tunnel vault.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a waterproof structure for open-cut repair of an existing tunnel vault, comprising a tunnel body, which is arranged in a mountain; a repair groove, which is arranged on the mountain and is located above the tunnel body; a cast-in-place layer, which is arranged at a damaged part of the top of the tunnel body and is located in the repair groove; a waterproof board, which is arranged in the repair groove and is located above the cast-in-place layer; a locking assembly, which is arranged on the side wall of the repair groove and is suitable for pressing the waterproof board onto the cast-in-place layer; and a backfill layer, which is arranged in the repair groove and is located above the waterproof board.

[0005] The utility model discloses a waterproof structure for open-cut repair of an existing tunnel vault. A repair groove is dug on a mountain, thereby facilitating repair of a damaged portion of the top of the tunnel body above the tunnel body. The repair is achieved through a cast-in-place layer. After the cast-in-place layer is poured, a waterproof plate is placed on the cast-in-place layer to reduce the infiltration of rainwater, thereby protecting the repaired portion and reducing the possibility of further damage to the repaired portion.

[0006] Furthermore, the locking assembly includes an anchor rod and a pressing piece, the anchor rod is driven into the mountain through the side wall of the repair groove, and the pressing piece contacts the waterproof board to press the waterproof board.

[0007] Furthermore, the pressure member includes a pressure plate and a pressure bolt, the pressure plate is connected to the anchor rod, the pressure bolt is threadedly connected to the pressure plate, and the pressure bolt contacts the top surface of the waterproof plate.

[0008] Furthermore, a tensioning assembly is provided on the waterproof board, and reserved steel bars are provided at both ends of the cast-in-place layer along its width direction, and the tensioning assembly is suitable for connecting with the reserved steel bars to tension the waterproof board.

[0009] Furthermore, the tensioning assembly includes a control box, a tightening shaft, a locking piece and a pull rope. The control box is fixedly connected to the waterproof board, the tightening shaft is rotatably connected to the control box, two pull ropes are provided and both are connected to the tightening shaft, and the ends of the pull ropes away from the tightening shaft are respectively connected to the reserved steel bars at both ends of the cast-in-place layer.

[0010] Furthermore, a locking bolt is threadedly connected to the tightening shaft, and the locking bolt is suitable for fixing the pull rope to the tightening shaft.

[0011] Furthermore, the locking member includes a ratchet and a pawl, the ratchet is coaxially fixedly connected to the tightening shaft, the pawl is rotatably connected to the control box via a rotating shaft, a torsion spring is provided on the rotating shaft, and the torsion spring applies a torque to the rotating shaft to rotate the pawl toward the ratchet.

[0012] Furthermore, one end of the tightening shaft extends out of the control box and is connected to a handle.

[0013] The beneficial effects of the utility model are:

[0014] 1. By digging a repair groove on the mountain, it is convenient to repair the damaged part on the top of the tunnel body above the tunnel body. The repair is achieved through a cast-in-place layer. After the cast-in-place layer is poured, a waterproof board is placed on the cast-in-place layer to reduce the infiltration of rainwater, thereby protecting the repaired part and reducing the possibility of further damage to the repaired part;

[0015] 2. By setting the pressure plate and the pressure bolt, it is convenient to press the waterproof board, so that the waterproof board can not only be waterproof, but also exert pressure on the cast-in-place layer so that the cast-in-place layer can resist the stress from the tunnel body and improve the life of the cast-in-place layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 The utility model is a schematic structural diagram of an overall waterproof structure for open-cut repair of an existing tunnel vault.

[0018] Figure 2 It is a schematic diagram of the rotating shaft and the tightening shaft in the utility model.

[0019] Figure 3 It is a schematic diagram of the anchor rod, the pressure plate and the pressure bolt in the utility model.

[0020] In the figure: 1. Tunnel body; 2. Mountain; 21. Repair groove; 22. Cast-in-place layer; 3. Waterproof board; 4. Locking assembly; 41. Anchor rod; 42. Pressure plate; 43. Pressure bolt; 5. Tensioning assembly; 51. Control box; 52. Take-up shaft; 54. Pull rope; 55. Locking bolt; 56. Ratchet; 57. Pawl; 58. Rotating shaft; 581. Torsion spring; 59. Handle. DETAILED DESCRIPTION

[0021] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0022] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The utility model discloses a waterproof structure for repairing an existing tunnel vault by open excavation.

[0024] Reference Figures 1 to 3A waterproof structure for open-cut repair of an existing tunnel vault comprises a tunnel body 1, the tunnel body 1 is arranged in a mountain 2, a repair groove 21 is excavated on the mountain 2, and the repair groove 21 is located above the tunnel body 1. A cast-in-place layer 22 is poured at the damaged part on the top of the tunnel body 1, and the cast-in-place layer 22 is located in the repair groove 21. A waterproof board 3 is also arranged in the repair groove 21, and the waterproof board 3 is located above the cast-in-place layer 22. A locking assembly 4 is arranged on the side wall of the repair groove 21, and the locking assembly 4 is suitable for pressing the waterproof board 3 onto the cast-in-place layer 22. A backfill layer is also arranged in the repair groove 21, and the backfill layer is located above the waterproof board 3. During construction, by digging the repair groove 21 on the mountain 2, it is convenient to repair the damaged part on the top of the tunnel body 1 above the tunnel body 1, and the repair is realized by the cast-in-place layer 22. After the cast-in-place layer 22 is poured, the waterproof board 3 is placed on the cast-in-place layer 22 to reduce the infiltration of rainwater. Finally, the repair groove 21 is backfilled to form a backfill layer. The backfill layer is not shown in the figure.

[0025] Specifically, the locking assembly 4 includes an anchor rod 41 and a pressing member, the anchor rod 41 is driven into the mountain 2 through the side wall of the repair groove 21, and the pressing member contacts the waterproof board 3 to press the waterproof board 3. The pressing member includes a pressing plate 42 and a pressing bolt 43, the pressing plate 42 is fixedly connected to the anchor rod 41, the pressing bolt 43 is threadedly connected to the pressing plate 42, and the pressing bolt 43 contacts the top surface of the waterproof board 3.

[0026] Specifically, a tensioning assembly 5 is provided on the waterproof board 3, and reserved steel bars are provided at both ends of the cast-in-place layer 22 along its width direction. The tensioning assembly 5 is suitable for connecting with the reserved steel bars to tension the waterproof board 3. The tensioning assembly 5 includes a control box 51, a tightening shaft 52, a locking member and a pull rope 54. The control box 51 is fixedly connected to the waterproof board 3, the tightening shaft 52 is rotatably connected to the control box 51, two pull ropes 54 are provided, and both are connected to the tightening shaft 52, and one end of the pull rope 54 away from the tightening shaft 52 is respectively connected to the reserved steel bars at both ends of the cast-in-place layer 22. The reserved steel bars are arranged in the mountain 2.

[0027] More specifically, a locking bolt 55 is threadedly connected to the tightening shaft 52, and the locking bolt 55 is suitable for fixing the pull rope 54 to the tightening shaft 52. The locking member includes a ratchet 56 and a pawl 57. The ratchet 56 is coaxially fixedly connected to the tightening shaft 52, and the pawl 57 is fixedly connected to a rotating shaft 58. The rotating shaft 58 is rotatably connected to the control box 51. A torsion spring 581 is provided on the rotating shaft 58. The torsion spring 581 applies a torque to the rotating shaft 58 to rotate the pawl 57 toward the ratchet 56. One end of the tightening shaft 52 extends out of the control box 51 and is connected to a handle 59. One end of the rotating shaft 58 also passes through the control box 51 so as to control the control box 51. The handle 59 can be manually operated or driven by a tool. Tightening the two pull ropes 54 is suitable for applying stress to both the waterproof board 3 and the cast-in-place layer 22 to help the waterproof board 3 and the cast-in-place layer 22 resist the stress of the mountain 2 and the tunnel body 1, thereby increasing the service life of the waterproof board 3 and the cast-in-place layer 22.

[0028] Working principle: During construction, a repair groove 21 is dug on the mountain 2, which makes it easier to repair the damaged part on the top of the tunnel body 1 above the tunnel body 1. The repair is achieved through a cast-in-place layer 22. After the cast-in-place layer 22 is poured, a waterproof board 3 is placed on the cast-in-place layer 22 to reduce the infiltration of rainwater. Finally, the repair groove 21 is backfilled to form a backfill layer.

[0029] By setting the pressure plate 42 and the pressure bolt 43, it is convenient to press the waterproof board 3, so that the waterproof board 3 can not only be waterproof, but also apply pressure to the cast-in-place layer 22, so that the cast-in-place layer 22 can resist the stress from the tunnel body 1, thereby improving the life of the cast-in-place layer 22.

[0030] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A waterproof structure for repairing an existing tunnel vault by open excavation, characterized in that: include A tunnel body (1), wherein the tunnel body (1) is arranged in a mountain (2); A repair groove (21) is provided on the mountain (2) and is located above the tunnel body (1); A cast-in-place layer (22) is provided at the damaged part of the top of the tunnel body (1) and is located in the repair groove (21); A waterproof board (3) is arranged in the repair groove (21) and is located above the cast-in-place layer (22); A locking assembly (4) is arranged on the side wall of the repair groove (21) and is suitable for pressing the waterproof board (3) onto the cast-in-place layer (22); A backfill layer is arranged in the repair groove (21), and the backfill layer is located above the waterproof board (3).

2. The waterproof structure for repairing the existing tunnel vault by open excavation according to claim 1 is characterized in that: The locking assembly (4) comprises an anchor rod (41) and a pressing piece. The anchor rod (41) is driven into the mountain (2) through the side wall of the repair groove (21). The pressing piece contacts the waterproof board (3) to press the waterproof board (3).

3. The waterproof structure for repairing the existing tunnel vault by open excavation according to claim 2 is characterized in that: The pressure member comprises a pressure plate (42) and a pressure bolt (43), wherein the pressure plate (42) is connected to the anchor rod (41), the pressure bolt (43) is threadedly connected to the pressure plate (42), and the pressure bolt (43) contacts the top surface of the waterproof plate (3).

4. The waterproof structure for repairing an existing tunnel vault by open excavation according to claim 1 is characterized in that: The waterproof board (3) is provided with a tensioning assembly (5), and both ends of the cast-in-place layer (22) along its width direction are provided with reserved steel bars, and the tensioning assembly (5) is suitable for connecting with the reserved steel bars to tension the waterproof board (3).

5. A waterproof structure for repairing an existing tunnel vault by open excavation as claimed in claim 4, characterized in that: The tensioning assembly (5) comprises a control box (51), a tightening shaft (52), a locking member and a pull rope (54); the control box (51) is fixedly connected to the waterproof board (3); the tightening shaft (52) is rotatably connected to the control box (51); two pull ropes (54) are provided and both are connected to the tightening shaft (52); one end of the pull rope (54) away from the tightening shaft (52) is respectively connected to the reserved steel bars at both ends of the cast-in-place layer (22).

6. A waterproof structure for repairing an existing tunnel vault by open excavation as claimed in claim 5, characterized in that: A locking bolt (55) is threadedly connected to the tightening shaft (52), and the locking bolt (55) is suitable for fixing the pull rope (54) to the tightening shaft (52).

7. The waterproof structure for repairing the existing tunnel vault by open excavation as claimed in claim 5, characterized in that: The locking member comprises a ratchet (56) and a pawl (57), wherein the ratchet (56) is coaxially fixedly connected to the tightening shaft (52), and the pawl (57) is rotatably connected to the control box (51) via a rotating shaft (58), and a torsion spring (581) is provided on the rotating shaft (58), and the torsion spring (581) applies a torque to the rotating shaft (58) so that the pawl (57) rotates toward the ratchet (56).

8. The waterproof structure for repairing the existing tunnel vault by open excavation as claimed in claim 7, characterized in that: One end of the tightening shaft (52) extends out of the control box (51) and is connected to a handle (59).

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