Tunnel drainage anti-permeation structure

Abstract

The utility model discloses a tunnel drainage anti-permeation structure, and belongs to the technical field of tunnel drainage. Comprising an anti-seepage combination layer, the anti-seepage combination layer comprises a corrosion-resistant layer, a waterproof film layer and an anti-oxidation layer which are laid from inside to outside, the seepage drainage structure comprises two symmetrically-arranged drainage pipes and a plurality of inverted U-shaped structure drainage pipe sets, the ends of the drainage pipe sets are connected with the drainage pipes in a penetrating mode, and the drainage pipe sets are connected with the anti-seepage combination layer in a penetrating mode. The drainage pipe set is arranged between the anti-seepage combined layer and the inner wall of the tunnel surrounding rock and used for seepage drainage, and the technical effects that overall seepage prevention is achieved, and leakage caused by water accumulation at the bottom of the inner wall of the tunnel is avoided are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel drainage, and more specifically, to a tunnel drainage anti-seepage structure. Background Art

[0002] A tunnel refers to an engineering building buried in the ground. It is a form of human use of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels and military tunnels. The structure of a tunnel includes two parts: a main building and ancillary equipment. The main building consists of a tunnel body and a tunnel door. The ancillary equipment includes a car shelter, fire-fighting facilities, emergency communications and drainage facilities. Long tunnels also have special ventilation and lighting equipment. Poor tunnel drainage will cause water accumulation inside the tunnel, resulting in infiltration of the inner wall of the tunnel, affecting tunnel safety. A Chinese patent with announcement number CN214616587U discloses a tunnel drainage and anti-seepage structure, including a ground base and a tunnel surrounding rock layer fixedly connected to the upper end of the ground base, the upper end of the ground base is fixedly connected to a concrete driving layer, the upper end of the concrete driving layer is provided with an infiltration groove and the upper end of the infiltration groove is fixedly connected to a filter screen plate, but the drainage grooves in the above patent are arranged on both sides of the ground base. When the drainage grooves are not well drained, some of the accumulated water will still infiltrate, causing damage to the tunnel.

[0003] The document with the prior art publication number CN219081609U provides a tunnel drainage and anti-seepage structure, which blocks water by setting an anti-seepage concrete layer, an anti-seepage composite layer and a waterproof coating on the inner wall of the tunnel surrounding rock to prevent water from penetrating into the inner wall of the tunnel. The anti-seepage composite layer uses a corrosion-resistant layer and an antioxidant layer to protect the waterproof membrane layer, thereby achieving a good anti-seepage effect. At the same time, the tunnel carriageway base layer adopts central drainage and two-side drainage to drain water to prevent the water in the tunnel carriageway base layer from spreading to both sides. Water-retaining curbstones are also provided on both sides of the drainage trough to further block the accumulated water and prevent water seepage in the tunnel.

[0004] Although the above-mentioned prior art solution can achieve the relevant beneficial effects through the structure of the prior art, it still has the following defects: although the device realizes the anti-seepage in the tunnel, when the water on the top of the tunnel accumulates under the anti-seepage combination layer under the action of gravity and cannot be discharged in time, a large amount of water accumulates and is very likely to cause bottom penetration through the anti-seepage combination layer. This is the specific reason why watermarks often appear at the bottom of the inner wall of the tunnel, which ultimately leads to the device having a better anti-seepage effect on the top and sides, but a poor anti-seepage effect on the bottom.

[0005] Regarding the above-mentioned related technologies, the inventors believe that when the water on the top of the tunnel accumulates under the anti-seepage combination layer under the action of gravity and cannot be discharged in time, a large amount of water will easily cause bottom penetration through the anti-seepage combination layer after accumulation. This is the specific reason why watermarks often appear at the bottom of the inner wall of the tunnel, which ultimately leads to the device having a better anti-seepage effect on the top and sides, but a poor anti-seepage effect on the bottom.

[0006] In view of this, we propose a tunnel drainage and anti-seepage structure. Utility Model Content

[0007] 1. Technical problems to be solved

[0008] The purpose of the present application is to provide a tunnel drainage and anti-seepage structure, which solves the technical problems in the above-mentioned background technology, achieves overall anti-seepage, and avoids the technical effect of leakage caused by water accumulation at the bottom of the tunnel inner wall.

[0009] 2. Technical solution

[0010] The technical solution of the present application provides a tunnel drainage anti-seepage structure, including an anti-seepage composite layer, wherein the anti-seepage composite layer includes a corrosion-resistant layer, a waterproof membrane layer and an antioxidant layer laid from the inside to the outside, and includes: an infiltration drainage structure, wherein the infiltration drainage structure includes two groups of symmetrically arranged drainage pipes and a plurality of inverted U-shaped drainage pipe groups, wherein the ends of the drainage pipe groups are through-connected with the drainage pipes, the drainage pipe groups are placed between the anti-seepage composite layer and the inner wall of the tunnel surrounding rock, and the drainage pipe groups are used for infiltration drainage.

[0011] By adopting the above technical scheme, a corrosion-resistant layer, a waterproof membrane layer and an antioxidant layer are laid in sequence on the inner wall of the tunnel surrounding rock to improve the anti-seepage effect of the tunnel. The drainage pipe group is distributed along the opening direction of the tunnel. The water blocked by the anti-seepage combination layer penetrates into the pipeline through the drainage pipe group and is drained through the drainage pipe to reduce the accumulation of water at the bottom of the anti-seepage combination layer and improve the watermark caused by the penetration at the bottom of the inner wall of the tunnel surrounding rock.

[0012] As an optional solution of the technical solution of the present application document, the drainage tube group includes two drainage tubes and an arc tube connected to the drainage tubes, and a plurality of drainage holes are provided on the surfaces of the arc tube and the drainage tube.

[0013] By adopting the above technical solution, a plurality of arc-shaped pipes are adapted to the arched structure in the tunnel, and the infiltrated water is drained through the drainage holes, and finally drained into the drainage pipe through the guide pipe.

[0014] As an optional solution of the technical solution of this application document, the drainage tube group is placed between the corrosion-resistant layer and the water-proof membrane layer.

[0015] By adopting the above technical solution, the drainage tube group is placed between the waterproof membrane layer and the corrosion-resistant layer. The waterproof membrane layer is used to isolate the water level, and the isolated water is concentrated on one side of the waterproof membrane layer to facilitate the drainage of the water by the drainage tube group.

[0016] As an optional solution of the technical solution of the present application document, the drain pipe is connected through a grille cover.

[0017] By adopting the above technical solution, the drainage pipe is pre-buried in the roadbed, and finally the grille cover is covered on the drainage outlet reserved above the drainage pipe to intercept debris.

[0018] As an optional solution of the technical solution of this application document, a one-way valve is connected through the guide pipe.

[0019] By adopting the above technical solution, the one-way valve drains water from top to bottom in one direction to avoid water accumulation in the tunnel, which causes rainwater to flow back into the space between the corrosion-resistant layer and the waterproof membrane layer.

[0020] 3. Beneficial effects

[0021] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0022] 1. The present application improves the anti-seepage effect of the tunnel by sequentially laying a corrosion-resistant layer, a waterproof membrane layer and an antioxidant layer on the inner wall of the tunnel surrounding rock. The drainage pipe group is distributed along the opening direction of the tunnel. The water blocked by the anti-seepage combination layer penetrates into the pipeline through the drainage pipe group and is drained through the drainage pipe to reduce the accumulation of water at the bottom of the anti-seepage combination layer and improve the watermark caused by the penetration at the bottom of the inner wall of the tunnel surrounding rock. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a tunnel drainage and anti-seepage structure disclosed in a preferred embodiment of the present application;

[0024] Figure 2 A schematic diagram of a seepage drainage structure of a tunnel drainage anti-seepage structure disclosed in a preferred embodiment of the present application;

[0025] Figure 3 A tunnel drainage and anti-seepage structure disclosed in a preferred embodiment of the present application Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 4 A schematic diagram of a partial cross-section structure of a tunnel drainage and anti-seepage structure disclosed in a preferred embodiment of the present application;

[0027] Figure 5 A tunnel drainage and anti-seepage structure disclosed in a preferred embodiment of the present application Figure 4The enlarged structural diagram at B in the middle;

[0028] Explanation of the numbers in the figure: 1. Anti-seepage combined layer; 101. Corrosion-resistant layer; 102. Water-proof membrane layer; 103. Anti-oxidation layer; 2. Seepage drainage structure; 201. Drain pipe; 202. Grille cover; 203. Guide pipe; 204. Arc pipe; 2014. Drainage hole; 205. One-way valve; 206. Drainage pipe group. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] A tunnel drainage anti-seepage structure comprises an anti-seepage composite layer 1, wherein the anti-seepage composite layer 1 comprises a corrosion-resistant layer 101, a waterproof membrane layer 102 and an anti-oxidation layer 103 laid from the inside to the outside, and comprises: an infiltration drainage structure 2, wherein the infiltration drainage structure 2 comprises two groups of symmetrically arranged drainage pipes 201 and a plurality of groups of inverted U-shaped drainage pipe groups 206, wherein the ends of the drainage pipe groups 206 are through-connected with the drainage pipes 201, the drainage pipe groups 206 are placed between the anti-seepage composite layer 1 and the inner wall of the tunnel surrounding rock, and the drainage pipe groups 206 are used for infiltration drainage.

[0031] Reference Figure 1-Figure 5 A corrosion-resistant layer 101, a waterproof membrane layer 102 and an anti-oxidation layer 103 are sequentially laid on the inner wall of the tunnel surrounding rock to improve the anti-seepage effect of the tunnel. The drainage pipe group 206 is distributed along the opening direction of the tunnel. The water blocked by the anti-seepage combination layer 1 penetrates into the pipeline through the drainage pipe group 206 and is drained through the drainage pipe 201 to reduce the accumulation of water at the bottom of the anti-seepage combination layer 1 and improve the watermark caused by the bottom penetration of the inner wall of the tunnel surrounding rock.

[0032] The drainage tube set 206 includes two drainage tubes 203 and an arc tube 204 connected to the drainage tubes 203 . A plurality of drainage holes 2014 are provided on the surfaces of the arc tube 204 and the drainage tube 203 .

[0033] Reference Figure 2 and Figure 5 , multiple arc tubes 204 are adapted to the arch structure in the tunnel, and the infiltrated water is drained through the drainage holes 2014, and finally drained into the drainage pipe 201 through the guide pipe 203.

[0034] The drainage tube group 206 is placed between the corrosion-resistant layer 101 and the water-proof membrane layer 102 .

[0035] Reference Figure 5 By placing the drainage tube group 206 between the waterproof membrane layer 102 and the corrosion-resistant layer 101, the waterproof membrane layer 102 is used to isolate the water level, and the isolated water is concentrated on one side of the waterproof membrane layer 102, so that the drainage tube group 206 can drain the water.

[0036] The drain pipe 201 is connected through a grille cover plate 202 .

[0037] Reference Figure 1 and Figure 3 , the drainage pipe 201 is pre-buried in the roadbed, and finally the grille cover 202 is covered on the drainage port reserved above the drainage pipe 201 to intercept debris.

[0038] A one-way valve 205 is connected through the flow guide pipe 203 .

[0039] Reference Figure 3 The one-way valve 205 drains water from top to bottom in one direction to prevent water from accumulating in the tunnel and causing rainwater to flow back into the space between the corrosion-resistant layer 101 and the waterproof membrane layer 102 .

[0040] Working principle: During tunnel construction, the corrosion-resistant layer 101 is laid on the inner wall of the tunnel, and then the seepage drainage pipe group 206 is assembled on the inner wall of the tunnel, the drainage pipe 201 is pre-buried in the roadbed and connected with the guide pipe 203, and then the waterproof membrane layer 102 is laid on the surface of the corrosion-resistant layer 101, and the anti-oxidation layer 103 is laid on the surface of the waterproof membrane layer 102.

Claims

1. A tunnel drainage anti-seepage structure, comprising an anti-seepage composite layer (1), wherein the anti-seepage composite layer (1) comprises a corrosion-resistant layer (101), a water-proof membrane layer (102) and an anti-oxidation layer (103) laid from inside to outside, characterized in that: include: A seepage drainage structure (2), the seepage drainage structure (2) comprising two groups of symmetrically arranged drainage pipes (201) and a plurality of groups of inverted U-shaped drainage pipe groups (206), the ends of the drainage pipe groups (206) being connected in a through-connection with the drainage pipes (201), the drainage pipe groups (206) being arranged between the anti-seepage composite layer (1) and the inner wall of the tunnel surrounding rock, the drainage pipe groups (206) being used for seepage drainage, the drainage pipe groups (206) comprising two guide pipes (203) and an arc-shaped pipe (204) connected in a through-connection with the guide pipes (203), a plurality of drainage holes (2014) being provided on the surfaces of the arc-shaped pipes (204) and the guide pipes (203), and a one-way valve (205) being connected in a through-connection with the guide pipes (203).

2. A tunnel drainage anti-seepage structure according to claim 1, characterized in that: The drainage tube group (206) is placed between the corrosion-resistant layer (101) and the water-proof membrane layer (102).

3. A tunnel drainage and anti-seepage structure according to claim 1, characterized in that: The drainage pipe (201) is connected through a grille cover plate (202).

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