Anti-seepage structure of composite lining deformation joints of ground fissure stratum tunnel and construction method thereof

Abstract

The invention discloses an anti-seepage structure of composite lining deformation joints of a ground fissure stratum tunnel. A primary supporting lining, an asphalt concrete lining and a reinforced concrete lining are sequentially paved from the wall rock to the interior of the tunnel; a plurality of deformation joints are pre-preserved in the reinforced concrete lining; end part linings embedded with bases and injected holes are arranged on two sides of the deformation joints; the bases are connected with a retractable baffle device; glass fiber cloth is paved between the retractable baffle device and the deformation joints; a plurality of cavities consist of the asphalt concrete lining, the asphalt concrete lining at two ends of each deformation joint and the glass fiber cloth; and matrix asphalt anti-seepage bodies are poured into the cavities. The invention also discloses a construction method of the structure, which comprises the following steps: firstly, casting a composite lining structure and preserving deformation joints; secondly, casting end part linings on two sides of the deformation joints, and arranging the deformation joints and glass fiber cloth; and finally poring the matrix asphalt anti-seepage bodies. The anti-seepage structure has good rheological characteristic and anti-seepage performance, and is convenient to repair.

Description

technical field [0001] The invention belongs to the technical field of building anti-seepage, and belongs to the anti-seepage technology of the deformation joints of the ground fissure formation tunnel lining structure under the condition of large displacement displacement, and specifically relates to an anti-seepage structure of the ground fissure formation tunnel composite lining deformation seam. The construction method of this anti-seepage structure. Background technique [0002] In the construction of underground structures such as tunnels, complex geological conditions are often encountered, such as ground fissures, goafs, caves, and sinkholes. In particular, the deformation of ground fissures caused by large-area uneven settlement of rock and soil under adverse geological effects seriously affects the stability of underground structures. The specific manifestation is that the ground fissure activity causes additional stress and additional deformation of the structure...

AI Technical Summary

Problems solved by technology

The reinforced concrete lining in tunnels with ground fissures moves along with the large displacement of the upper and lower wall soils, which makes it difficult for traditional anti-seepage technology and anti-seepage structures to meet the anti-seepage requirements. It is necessary to develop a suitable anti-seepage structure system for ground fissure tunnels

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