Boot-type base arch-shaped structure non-inverted-arch-type lining and drainage system thereof

Abstract

Disclosed is a boot-type base arch-shaped structure non-inverted-arch-type lining and a drainage system thereof. The boot-type base arch-shaped structure non-inverted-arch-type lining and the drainagesystem thereof can reduce or even eliminate the effect of ground water on the bottom structure of atunnel lining, can effectively solve the problems of the upward floating deformation of the tunnel inverted arch or the cracking damage of the tunnel bottom structure in the karst area or ground water development areas, so as to ensure the stability and safety of the tunnel construction and operation. The bottoms of edge walls of two sides of an arch wall secondary lining structure are provided with bases solidified to one; fracture surfaces of the bases are of a boot-type structure with inner cavities; the bases are used as bearing structures of the arch wall secondary lining structure; and the inner cavities are used as tunnel longitudinal drainage channels. A water permeability grading gravel basic layer is arranged between the two bases to fill on the tunnel excavation table. The drainage system comprises an arc wall range drainage system and a tunnel bottom drainage system, and thearc wall range drainage system and the tunnel bottom drainage system communicate with the inner cavities.

Description

technical field [0001] The invention relates to a tunnel lining and a drainage system structure, in particular to a tunnel lining structure and its waterproofing and drainage that are used in areas where groundwater develops or where groundwater is irregularly affected by seasons or in karst areas, and where the bottom of the tunnel is weak to strong weathered hard rock system structure. Background technique [0002] Since the beginning of the 21st century, my country's railway construction has developed rapidly, and more and more high-standard double-track railways with a speed of more than 200km per hour have been built. Especially in the southwestern mountainous area, on the one hand, due to the widespread distribution of limestone formations; on the other hand, for high-speed railways, the line development is restricted by various factors such as large curve radius and complex terrain and geological conditions, resulting in the scale (number and length) of karst tunnels....

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention is to provide a non-inverted lining with a shoe-shaped base arch structure and its drainage system. By modifying the structure of the tunnel bottom of the traditional tunnel lining, the stress form of the tunnel bottom structure and the drainage system can be changed. , reduce or even eliminate the effect of groundwater on the bottom structure of the tunnel lining, effectively solve the problems of uplift deformation of tunnel inverts or cracking and damage of tunnel bottom structures in karst or groundwater-developed areas, and ensure the stability and safety of tunnel construction and operation

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