Building method of floor fissure strata tunnel deformation joint anti-seepage structure and anti-seepage structure

Abstract

The invention discloses a construction method for a ground fissure formation tunnel deformation seam impervious structure, comprising the steps as follows: modified asphalt concrete and reinforced material are prepared as reinforced asphalt concrete flexible plate by a rolling method; the flexible plate is internally provided with resistance wires which are led out and used for expanding the deformation seam and the tunnel diameters at two sides so as to form a primary lining supporting wall rock body; the asphalt concrete flexible plate is arranged on the surface of the primary lining supporting wall rock body; two sides of the deformation seam are respectively poured by end lining with the end surface having two parallel ring-shaped trough; subsequently, the deformation seam is internally provided with reinforcing cage and poured by the asphalt concrete; the deformation seam is filled and sealed; two ends of the resistance wire is led into the tunnel by the deformation seam. The impervious structure constructed by the method of the invention utilizes the rheological property and electric heating of the asphalt concrete, prompts the rheological deformation of the asphalt concrete,and leads the surfaces of the reinforced asphalt concrete panel and the lining structure to generate the relative sliding, so as to adapt for the continuous relative staggering displacement of the adjacent lining structures.

Description

technical field [0001] The invention relates to a method for constructing an anti-seepage structure of a tunnel lining deformation joint, in particular to a method for constructing an anti-seepage structure for a tunnel deformation joint in a ground fissure formation, and also relates to an anti-seepage structure constructed by the method. Background technique [0002] In the construction of cavern structures such as tunnels, complex geological conditions are often encountered, such as ground fissures, goafs, karst caves, and sinkholes. In particular, ground fissures caused by large-scale uneven settlement of geological structures seriously affect the stability of cavern structures. Specifically, the uneven deformation of ground fissures causes additional stress and additional deformation of structures, and the deformation of cavern structures is too large. It will lead to the destruction of its lining structure, causing leakage, or the damage of anti-seepage material, causi...

AI Technical Summary

Problems solved by technology

Although this method adopts multiple anti-seepage measures, its waterproof effect depends on the degree of stretching and deformation of the deformation joint. If the stretching deformation of the deformation joint is large, the rubber waterstop strip will lose its sealing and waterproof effect, and the grouting will be performed again. Affected by the cement formed by previous grouting, the sealing and waterproof effect is reduced

[0006] Stratum movement caused by ground fissure activity is unavoidable, and in ground fissure strata, secondary lining deformation joints have obvious relative displacement with the staggering of the upper and lower pan soils. seepage requirements

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