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Waterproof single-layer lining structure and construction technology thereof

A construction technique and waterproof technology, which can be applied in the shaft lining, tunnel lining, underground chamber, etc., and can solve the problems of not meeting the waterproof requirements, waterproof and anti-seepage treatment of a single waterproof coating, etc.

Inactive Publication Date: 2019-09-27
THE 5TH ENG CO LTD OF CHINA RAILWAY 25TH BUREAU GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing single-layer lining structure only uses a single waterproof coating for waterproof and anti-seepage treatment, which cannot meet the waterproof requirements of subway construction in coastal cities and other locations with rich groundwater

Method used

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  • Waterproof single-layer lining structure and construction technology thereof
  • Waterproof single-layer lining structure and construction technology thereof
  • Waterproof single-layer lining structure and construction technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: A waterproof single-layer lining structure, refer to figure 1 with figure 2 , Including a base concrete layer 1, a supporting concrete layer 2, a waterproof isolation layer 3, a reinforced concrete layer 4, a waterproof concrete layer 5 and a nano-coating layer 6 arranged in sequence from the arched structure close to the tunnel body to the surface side. The supporting concrete layer 2 is provided with a reinforcing steel skeleton 21; the waterproof isolation layer 3 is made of corrosion-resistant metal. The waterproof concrete layer 5 is formed by grouting with waterproof concrete slurry, and a waterproof cloth 51 is arranged in the waterproof concrete layer 5. Wire meshes are respectively provided on the side of the steel reinforcement skeleton 21 close to the arch structure of the tunnel main body and the side away from the arch structure of the tunnel main body.

[0038] The base concrete layer 1 is mainly used for smoothing and shaping the structure of the...

Embodiment 2

[0039] Example 2: A waterproof single-layer lining structure construction technology, refer to figure 2 , Including the following method steps: step S1, base surface treatment; step S2, building support equipment; step S3, concrete grouting, step S4, spraying of nano paint.

[0040] Step S1, base surface processing. According to the technical requirements of the construction, the surface of the underground tunnel shall be leveled to keep it smooth and flat. According to the monitoring value, the settlement of the vault tends to be stable. After the tunnel clearance meets the requirements through measurement and inspection, the treatment of the base surface should be solid, smooth, and smooth, without obvious unevenness. When the mining method structure, foundation, foundation or load changes, which may cause large differential settlement, deformation joints should be set. Deformation joints are set in this section according to the section changeover, and the width of the deform...

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Abstract

The invention relates to a waterproof single-layer lining structure and construction technology thereof, and belongs to the technical field of subway construction. According to the main points of the technical scheme, the waterproof single-layer lining structure includes a base concrete layer, a supporting concrete layer, a waterproof isolation layer, a reinforced concrete layer, a waterproof concrete layer, and a nanometer coating layer, wherein the base concrete layer, the supporting concrete layer, the waterproof isolation layer, the reinforced concrete layer, the waterproof concrete layer and the nanometer coating layer are arranged successively from an arch structure close to a tunnel main body to one side of the earth surface; the supporting concrete layer is provided with a steel bar skeleton; and the waterproof isolation layer is made of corrosion-resistant metal, and the waterproof concrete layer is grouted by waterproof concrete mud and internally provided with a waterproof cloth. The problem of poor waterproof effect when the single-layer lining structure is constructed in the place with abundant groundwater is solved, and when subway construction is at the location where groundwater is abundant, the main structure of the tunnel can be well supported, water-proofed and anti-permeated.

Description

Technical field [0001] The invention relates to the technical field of subway construction, in particular to a waterproof single-layer lining structure and a construction technology thereof. Background technique [0002] Single-layer lining means that after the excavation of the tunnel chamber, anchor rods and other supporting components are installed according to the surrounding rock conditions, and a layer of waterproof concrete is sprayed immediately, then sprayed with waterproof material, and finally sprayed with one or more layers of concrete. It constitutes a support system that has strong adhesion between layers and can fully transmit shear force. Compared with the traditional composite lining, each structural layer of the single-layer lining can be well "closed", the contour is round and the force is even, it improves the reliability of the supporting system, and reduces the excavation and reinforced concrete lining The engineering quantity has the advantages of convenie...

Claims

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Application Information

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IPC IPC(8): E21D11/00E21D11/10E21D11/15E21D11/38
CPCE21D11/003E21D11/006E21D11/10E21D11/107E21D11/155E21D11/38E21D11/383
Inventor 鲍汝苍郭明俊任大广秦大伟朱连臣王有旗宋昱宇
Owner THE 5TH ENG CO LTD OF CHINA RAILWAY 25TH BUREAU GRP
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