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A kind of tunnel waterproof board laying method

A technology of tunnel waterproofing board and laying method, applied in tunnels, tunnel linings, mining equipment and other directions, can solve the problems of easy falling off, weak welding, easy scalding, etc., and achieves low welding temperature requirements, short welding time, and control damage. Effect

Active Publication Date: 2019-02-19
NO 4 ENG CO LTD OF CHINA RAILWAY 11 BUREAU GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a tunnel waterproof board laying method in view of the shortcomings of the existing tunnel waterproof board laying process, such as weak welding, easy to fall off, easy to scald and form holes.

Method used

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  • A kind of tunnel waterproof board laying method
  • A kind of tunnel waterproof board laying method
  • A kind of tunnel waterproof board laying method

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] see Figure 1 to Figure 3 , a method for laying a tunnel waterproof board, relates to a tunnel waterproof construction process, comprising the following steps:

[0023] Step 1: Cut out the strip 1 with the number of hot-melt gaskets required by the design, and use the strip 1 to replace the hot-melt gasket. Outside the site, the strip 1 is first arranged on the waterproof board 2 to be laid in a plum blossom shape according to the design requirements for the spacing of the hot-melt gaskets. Since the waterproof board 2 is spread in the tunnel 4 in a circular direction, the short edge of the strip 1 The longitudinal section and long side of the tunnel 4 are arranged along the direction of the cross section of the tunnel 4; then, one end of the strip 1 is thermally welded to the waterproof board 2 to be laid with a hot blower ou...

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Abstract

The invention discloses a tunnel waterproof plate laying method. The method comprises the steps that firstly, strip-shaped belts (1) are arranged on a waterproof plate (2) in wintersweet shapes, one ends of the strip-shaped belts (1) are welded on the waterproof plate (2) in a hot melting mode, and the other ends of the strip-shaped belts (1) serve as free ends; secondly, a waterproof plate belt (3) serving as a pressing strip enables a geotextile (6) to be nailed on the surface of a primary support (7) through cement nails (5), and every two cement nails (5) serve as one set; and thirdly, the waterproof plate (2) is laid, the strip-shaped belts (1) are in one-to-one correspondence with all sets of cement nails (5), the strip-shaped belts (1) are located between the two cement nails (5) of all sets, the free ends of the strip-shaped belts (1) penetrate through gaps between the waterproof plate belt (3) and the geotextile (6) between the two cement nails (5) of all the sets one by one, and the free ends of the strip-shaped belts (1) are welded on the waterproof plate (2) in a hot melting mode. The problem of secondary back disengaging caused by unstable welding of the waterproof plate (2) is solved, and the laying quality of the waterproof plate (2) is improved.

Description

technical field [0001] The invention relates to a method for laying waterproof boards, more specifically to a method for laying waterproof boards for tunnels, and belongs to the technical field of civil engineering tunnel construction. Background technique [0002] The laying of tunnel waterproof board is to lay a layer of non-woven geotextile on the initial support surface before the secondary lining construction, and then lay a layer of waterproof board; the waterproof board and non-woven geotextile are welded together by climbing welding machine, After the laying of the waterproof board is completed, its airtightness is checked, and the secondary lining construction can only be started after it is confirmed that there is no damage and no water permeability. [0003] The traditional method of laying the waterproof sheet is to lay the waterproof sheet on the outer layer of the geotextile by hot-melt welding the waterproof sheet and the hot-melt gasket that fixes the non-wov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/38
CPCE21D11/381E21D11/383
Inventor 胡昊刘素云
Owner NO 4 ENG CO LTD OF CHINA RAILWAY 11 BUREAU GRP
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