CN219281759U - A tunnel waterproof and drainage structure - Google Patents

Abstract

The utility model discloses a tunnel waterproof and drainage structure, which sequentially includes primary support and secondary lining, and a waterproof and drainage structure is arranged between the primary support and secondary lining, and the waterproof and drainage structure sequentially includes a filter layer, a drainage Layer, buffer layer and waterproof layer, the filter layer is located on the side facing the primary support, and the waterproof layer is located on the side facing the secondary lining; the tunnel waterproof and drainage structure can greatly increase the drainage of the tunnel by setting the drainage layer performance, avoiding the accumulation of water seepage in the initial support, and reducing the damage caused by water leakage in the tunnel.

Description

A tunnel waterproof and drainage structure

technical field

The utility model relates to the technical field of tunnels, in particular to a tunnel waterproof and drainage structure.

Background technique

Tunnel waterproofing and drainage refers to the waterproof and drainage measures taken to ensure that the tunnel building will not cause damage due to water leakage, endanger driving safety, corrode equipment in the tunnel, and reduce the service life of the structure. It is a comprehensive work involving factors such as topography, climate, engineering strata and hydrogeology, structural schemes, construction methods and material properties.

At present, the structure of domestic tunnels is the structure of primary support, geotextile, waterproof board, and secondary lining. The discharge of water seepage from the primary support fissure of the tunnel mainly depends on the seepage of geotextile. The drainage capacity is extremely limited, and water will accumulate in the tunnel. Therefore, it is necessary to design and develop a tunnel structure with strong drainage performance.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a tunnel waterproof and drainage structure, which can greatly increase the drainage performance of the tunnel by setting a drainage layer, avoid the accumulation of seepage in the initial support, and reduce the Tunnels are a hazard due to leaking water.

In order to achieve the above object, the utility model provides the following technical solutions:

A tunnel waterproof and drainage structure, including primary support and secondary lining in sequence, a waterproof and drainage structure is arranged between the primary support and secondary lining, and the waterproof and drainage structure sequentially includes a filter layer, a drainage layer, a buffer layer and A waterproof layer, the filter layer is located on the side facing the primary support, and the waterproof layer is located on the side facing the secondary lining.

Further, the end of the waterproof and drainage structure located in the arch foot area of the tunnel is bent upwards to form a U-shaped accommodation part, and the U-shaped accommodation part is provided with a vertically arranged drainage blind pipe, and the outer circumference of the drainage blind pipe is provided with several openings. hole.

Further, the drainage layer is a three-dimensional network structure.

Further, the drainage layer is a spinneret mat, a three-dimensional net or a cross elastic net.

Further, the waterproof layer is a waterproof board, and the waterproof board is made of polymer materials.

Further, the filter layer is made of non-woven fabric.

Further, the buffer layer is made of non-woven fabric or self-adhesive fabric.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model is provided with an anti-drainage structure between the primary support and the secondary lining, and by setting a drainage layer, so that the drainage capacity of the seepage water of the primary support can be greatly increased after it flows into the anti-drainage structure, so that the initial support The seepage water quickly flows into the drainage system of the tunnel (drainage blind pipe) and is discharged. By setting the filter layer, the seepage water of the initial support can filter out the sediment in the seepage water of the initial support when it flows into the anti-drainage structure. , stones and other impurities, only allow water to enter the drainage layer to prevent the blockage of the drainage layer caused by the entry of impurities, and set up a buffer layer to prevent the roughness of the initial support from wearing the drainage layer and waterproof layer for buffer protection.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

Fig. 1 is a structural schematic diagram 1 of a tunnel waterproof and drainage structure;

Fig. 2 is a structural schematic diagram 2 of a tunnel waterproof and drainage structure;

Fig. 3 is a structural schematic diagram III of a tunnel waterproof and drainage structure.

The marks in the figure are: 1. Primary support; 2. Secondary lining; 3. Waterproof and drainage structure; 301. Filter layer; 302. Drainage layer; 303. Buffer layer; 304. Waterproof layer; 4. Drainage blind pipe.

Detailed ways

In the description of the present utility model, it should be noted that, for orientation words, if there are terms "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "Width", "Thickness", "Top", "Bottom", "Front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", " "Inside", "outside", "clockwise", "counterclockwise" and other indication orientations and positional relationships are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or It should not be construed as limiting the specific protection scope of the present invention to imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation.

In addition, terms such as "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of technical features. Therefore, the definition of "first" and "second" features may explicitly or implicitly include one or more of these features. In the description of the utility model, the meanings of "several" and "several" are two or two more than one, unless otherwise expressly and specifically limited.

A tunnel waterproof and drainage structure, as shown in Figure 1, sequentially includes primary support 1 and secondary lining 2, a waterproof and drainage structure 3 is arranged between the primary support 1 and secondary lining 2, and the waterproof and drainage structure 3 includes a filter layer 301, a drainage layer 302, a buffer layer 303 and a waterproof layer 304 in sequence, the filter layer 301 is located on the side facing the primary support 1, and the waterproof layer 304 is located on the side facing the secondary lining 2.

The utility model is provided with a waterproof and drainage structure 3 between the primary support 1 and the secondary lining 2, and by setting a drainage layer 302, thereby greatly increasing the water drainage after the seepage water of the primary support flows into the waterproof and drainage structure 3 ability, so that the seepage water of the initial support can quickly flow into the drainage system of the tunnel (drainage blind pipe 4) and be discharged. By setting the filter layer 301, the seepage water of the initial support can be filtered out when it flows into the waterproof and drainage structure 3 The sediment, stones and other impurities in the seepage water of the primary support only let the water enter the drainage layer 302 to prevent the blockage of the drainage layer 302 caused by the entry of impurities. The drainage layer 302 and the waterproof layer 304 are worn to provide buffer protection.

Preferably in this embodiment, as shown in Figure 2, the end of the waterproof and drainage structure 3 located at the arch foot area of the tunnel is bent upwards to form a U-shaped receiving part, and the U-shaped receiving part is provided with vertically arranged drainage blinds. Pipe 4, the outer circumference of the blind drainage pipe 4 is provided with a number of openings;

By setting the U-shaped accommodation part and the drainage blind pipe 4 in the U-shaped accommodation part, the seepage water flowing into the initial support in the waterproof and drainage structure 3 arranged along the inner wall of the tunnel will eventually flow into the U-shaped accommodation at the arch foot of the tunnel on both sides. part, and finally flow into the drain dead pipe 4 to be discharged.

Preferably in this embodiment, the drainage layer 302 is a three-dimensional network structure, and its three-dimensional network structure is formed by a number of filamentary materials crossing left and right, crossing up and down, and finally interweaving in the middle, which can be made of metal materials or polymer materials It is made so that the drainage layer 302 has a large water flow space (cavity), so that the seepage water of the initial support can flow down quickly after flowing into the drainage layer 302, and finally flow into the dead drainage pipe 4 for discharge. .

Preferably in this embodiment, the drainage layer 302 is a spinneret mat, a three-dimensional net or a cross elastic net.

In this embodiment, preferably, the waterproof layer 304 is a waterproof board, and the waterproof board is made of polymer materials. Specifically, the waterproof board is an EVA waterproof board, which can effectively waterproof.

Preferably in this embodiment, the filter layer 301 is made of non-woven fabric to ensure its filtering performance, so that it can filter the sediment and stones in the seepage water of the primary support.

Preferably in this embodiment, the material used for the buffer layer 303 is non-woven fabric or self-adhesive cloth, so that the buffer layer 303 has flexibility and deformability, can play a buffer role, and play a role in the drainage layer 302 and the waterproof layer 304. buffer protection, and can also facilitate the contact connection with the waterproof layer 304 and the drainage layer 302 (such as bonding by self-adhesive glue or welding by hot-melt gaskets).

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (7)

1. A tunnel waterproof and drainage structure which characterized in that: the novel waterproof and waterproof support comprises a primary support and a secondary lining in sequence, wherein a waterproof and waterproof structure is arranged between the primary support and the secondary lining, the waterproof and waterproof structure comprises a filter layer, a drainage layer, a buffer layer and a waterproof layer in sequence, the filter layer is located on one side towards the primary support, and the waterproof layer is located on one side towards the secondary lining.

2. A tunnel water-repellent structure according to claim 1, wherein: the end part of the waterproof and drainage structure, which is positioned in the tunnel arch foot area, is bent upwards to form a U-shaped accommodating part, a drainage blind pipe which is longitudinally arranged is arranged at the U-shaped accommodating part, and a plurality of holes are formed in the periphery of the drainage blind pipe.

3. A tunnel water-repellent structure according to claim 1, wherein: the drainage layer is of a three-dimensional net-shaped body structure.

4. A tunnel water drainage structure according to claim 3, wherein: the drainage layer is a spinning pad net, a three-dimensional net or a crossed elastic net.

5. A tunnel water-repellent structure according to claim 1, wherein: the waterproof layer is waterproof board, waterproof board adopts polymer material to make.

6. A tunnel water-repellent structure according to claim 1, wherein: the filter layer is made of non-woven fabrics.

7. A tunnel water-repellent structure according to claim 1, wherein: the buffer layer is made of non-woven fabrics or self-adhesive fabrics.

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