Big skewback base plate type lining and drainage system structure thereof

Abstract

A big skewback base plate type lining and a drainage system structure thereof are used for reducing and even eliminating the influence of underground water on the bottom structure of a tunnel lining,so that the problem that a tunnel inverted arch floats upwards or a tunnel bottom structure cracks and is damaged in karst or underground water development areas are effectively solved, and the stability and safety of tunnel construction and operation are ensured. Big skewbacks which are integrally solidified with an arch wall secondary lining structure are arranged at the bottoms of the two sidesof the arch wall secondary lining structure, a base plate is arranged between the big skewbacks on the two sides, and the two ends of the base plate are solidified with the skewbacks on the two endscorrespondingly. A center box-shaped construction body which extends along the longitudinal center line of a base plate body is arranged under the base plate body, and an inner cavity of the center box-shaped construction body is used as a central water collecting and drainage channel. The box-shaped construction body is arranged under the big skewbacks on the two sides, the longitudinal through inner cavity of the box-shaped construction body is used as a base water collecting channel, and in-hole side ditches are fixedly formed in the big skewbacks on the two sides. A drainage system comprises an arch wall range drainage system body, a tunnel bottom drainage system body and an in-tunnel drainage system body, wherein the arch wall range drainage system body communicates with the center water collecting and drainage channel; the tunnel bottom drainage system body and the central water collecting channel communicate with the base water collecting channel, and the in-tunnel drainage system communicates with the in-hole side ditches and the central water collecting channel.

Description

technical field [0001] The invention relates to a tunnel lining and a drainage system structure, in particular to a tunnel lining and its waterproof and drainage system structure used in areas with developed groundwater or karst areas. 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 southwest mountainous area, karst is developed, and the development of the line is subject to many factors such as large curve radius and complex topographic and geological conditions. Restricted by these factors, the scale of karst tunnels increased rapidly. Due to the complexity, diversity, and irregularity of karst and karst water development, the risks of building large karst tunnels, especially their operation, are getting higher and higher. [0003] In recent years, during the operati...

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention is to provide a large abutment bottom plate lining and its drainage system structure, so as to reduce or even eliminate the effect of groundwater on the bottom structure of the tunnel lining, and effectively solve the upward floating deformation of tunnel inverts in areas where karst or groundwater is developed Or the cracking and damage of the tunnel bottom structure to ensure the stability and safety of tunnel construction and operation

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