Construction method for high and cold region tunnel hole body water resistance

A technology of high-cold regions and construction methods, applied in tunnels, tunnel linings, underground chambers, etc., can solve the problems of inconvenient installation of insulation boards, slow construction speed, etc., and achieve fast construction speed, easy construction, and good quality effects

Inactive Publication Date: 2016-03-23
CHINA RAILWAY 19TH BUREAU GRP SECOND ENG CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Since the distance between the two layers of waterproof boards fixed on the shotcrete surface of the tunnel

Method used

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  • Construction method for high and cold region tunnel hole body water resistance

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Embodiment Construction

[0009] The non-woven fabric is laid on the surface of the sprayed concrete layer of the tunnel body, several hot-melt liners are arranged on the outer surface of the non-woven fabric, and the hot-melt liner and the non-woven fabric are fixed on the shotcrete layer by nailing. The above-mentioned hot-melt liners are arranged in a plum blossom shape, wherein the distance between adjacent heat-melt liners (horizontal and longitudinal distances) at the arch is 0.5m-0.8m, and the distance between adjacent heat-melt liners at the side walls (horizontal space and longitudinal spacing) is 0.8m-1.0m; the laying of non-woven fabrics should be moderately tight so that they can be tightly attached to the surface of the shotcrete layer.

[0010] Weld the inner waterproof board to the hot-melt liner fixed on the non-woven fabric with an electric fusion welder, use the leftover material of the waterproof board to make several suspenders with a width of 2 cm and a length of 8 cm, and press the...

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Abstract

The invention relates to a construction method for high and cold region tunnel hole body water resistance, and relates to a construction method applicable to high and cold region tunnel hole body water resistance. The method mainly solves the problem that the existing high and cold region tunnel hole body water resistance construction speed is low. A non-woven fabric is laid on the surface of a sprayed concrete layer of a tunnel hole body, a plurality of hot melting liners are arranged on the outer surface of the non-woven fabric, the hot melting liners and the non-woven fabric are fixed to the sprayed concrete layer through fasteners, and the hot melting liners are arranged according to the quincunx; an inner layer waterproof plate is welded to the hot melting liners on the fixed non-woven fabric through an electric hot melting device, a plurality of suspenders are manufactured through offcut of the waterproof plate, hemp ropes are pressed below the suspenders, the suspenders are welded to the inner layer waterproof plate through a welding gun, a heat preservation plate is laid on the outer surface of the inner layer waterproof plate, the hemp ropes penetrate through the heat preservation plate, the outer ends of the hemp ropes are exposed and fixedly provided with the hot melting liners, and an outer layer waterproof plate is welded to the outer surface of the heat preservation plate through the electric hot melting device. The construction method has the advantage of being high in construction speed.

Description

Technical field: [0001] The invention relates to a construction method suitable for waterproofing the body of a tunnel in an alpine region. Background technique: [0002] At present, the method of waterproofing the tunnel body in the alpine region is to first fix two layers of waterproof boards on the sprayed concrete surface of the tunnel body, set a connecting belt between the two layers of waterproof boards, and then insert the insulation board between the two layers of waterproof boards , and secured by connecting straps. Since the distance between the two layers of waterproof boards fixed on the shotcrete surface of the tunnel body is about 5cm, it is very inconvenient to install the insulation board and the construction speed is slow. Invention content: [0003] The technical problem to be solved by the present invention is to provide a method for waterproofing the tunnel body in the alpine region with fast construction speed and good quality. [0004] The above pu...

Claims

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Application Information

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IPC IPC(8): E21D11/38
CPCE21D11/38E21D11/381E21D11/383
Inventor 张秀田邹德玉范鹏王存帮候宇翔解佳飞曹树强
Owner CHINA RAILWAY 19TH BUREAU GRP SECOND ENG CO LTD
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