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Tunnel lining end template structure with waterproofing and drainage functions

An end formwork, waterproof and drainage technology, which is applied in the direction of tunnel lining, drainage, tunnel, etc., can solve the problems of inaccurate positioning of buried waterstops for lining concrete, unsatisfactory waterproof and drainage construction quality, irregular formwork, etc. , to achieve the effect of improving the integrity and waterproof and drainage performance, reducing the risk of water leakage and meeting the requirements of anti-seepage

Inactive Publication Date: 2017-03-22
CHINA RAILWAY DESIGN GRP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor construction environment in the tunnel and the extremely complex hydrogeological conditions around it, the construction quality of waterproofing and drainage of the construction joints is not satisfactory. The inaccurate positioning of the mold and the buried waterstop and the lack of compactness of the lining concrete lead to the failure of the pasted waterstop, etc., resulting in water leakage in the lining construction joints

Method used

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  • Tunnel lining end template structure with waterproofing and drainage functions
  • Tunnel lining end template structure with waterproofing and drainage functions

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Embodiment Construction

[0020] Below, the present invention is described in detail with reference to accompanying drawing and embodiment:

[0021] Such as figure 1 , 2 As shown, a tunnel lining end formwork structure with water-proof and drainage functions, including a positioning pad 3 arranged on the surface of the tunnel primary support 4 or waterproof board 5 and an end formwork located at the lining construction joint 2 of the secondary lining 6 1. It is characterized in that: one end of the end template 1 close to the inner side of the tunnel is a seam-riding belt, and the other end is a drainage groove, and the opening end of the drainage groove is sealed by a positioning pad 3 to form a seepage diversion channel.

[0022] The cross-section of the seam riding belt is trapezoidal, and the lower bottom of the trapezoidal shape is close to the inner side of the tunnel.

[0023] The drainage groove is a semicircular groove.

[0024] The end template 1 is a strip-like structure prefabricated by ...

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Abstract

The invention discloses a tunnel lining end template structure with waterproofing and drainage functions. The tunnel lining end template structure comprises a locating pad and an end template, wherein the locating pad is arranged on a tunnel initial support or the surface of a waterproof plate, and the end template is located at a lining construction joint of a secondary lining. The end, close to the inner side of a tunnel, of the end template serves as a straddle belt, and the other end of the end template is provided with a draining groove. The open end of the draining groove is sealed and buckled through the locating pad so that a seepage flow guiding channel can be formed. By the adoption of the tunnel lining end template structure, the construction technique of the lining construction joint of the tunnel is further simplified, the integrity and waterproofing and drainage performance of the construction joint are improved, the seepage risk of the construction joint is lowered, and operation safety of the tunnel is guaranteed.

Description

technical field [0001] The invention belongs to a tunnel lining end formwork structure, in particular to a tunnel lining end formwork structure with waterproof and drainage functions. Background technique [0002] In order to ensure the safety of the tunnel during operation, it is generally necessary to set up a complete tunnel waterproof and drainage system in combination with engineering geology and hydrogeological conditions. However, previous engineering experience shows that water seepage in weak places such as tunnel construction joints at home and abroad is not uncommon, which has brought many problems to tunnel operation, and the waterproof and drainage design of construction joints has gradually attracted the attention of the engineering community. many measures. At present, the concept of waterproofing and drainage at tunnel construction joints is mainly based on waterproofing. Water belts + water-expandable water-stop strips", etc., and some drainage facilities ...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D11/38E21F16/02
CPCE21D11/10E21D11/38E21F16/02
Inventor 马志富赵勇杨昌贤倪光斌苏江林传年曲耀慧刘国平赵正
Owner CHINA RAILWAY DESIGN GRP CO LTD
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