Deeply-buried side ditch drain external displacement-type lining and drainage system thereof

Abstract

Disclosed is a deeply-buried side ditch drain external displacement-type lining and a drainage system thereof. The deeply-buried side ditch drain external displacement-type lining and the drainage system thereof can reduce or even eliminate the effect of ground water on the bottom structure of a tunnel 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 deeply-buried side ditch drain external displacement-type lining comprises an arch wall primary supporting structure, an arch wall secondary lining structure and arc wall range waterproof layers,and a drainage system. The bottoms of edge walls of two sides of the arch wall secondary lining structure are provided with longitudinal beams solidified to one, and the longitudinal beams are used asbearing structures of the arch wall secondary lining structure. A base plate is arranged between two side longitudinal beams and located on the tunnel bottom face, twotransverse ends of the base plate are solidified with the two side longitudinal beams, and the inner sides, close to the hole, of the longitudinal beams are provided with side ditches located at the lower edge of the base plate. Thedrainage system comprises an arc wall range drainage system and a tunnel bottom drainage system, and the arc wall range drainage system and the tunnel bottom drainage system communicate with the sideditches.

Description

technical field [0001] The present invention relates to a tunnel lining and drainage system structure, in particular to a tunnel lining and its waterproof and drainage system structure used in areas with developed groundwater, areas with irregular groundwater affected by seasons 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 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. Rapid increase. Due to the complexity, diversity, and irregularity of karst and karst water d...

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention is to provide a deep-buried side ditch external drainage type lining and its drainage system. By modifying the traditional tunnel lining tunnel bottom structure, changing the tunnel bottom structure stress form and drainage system, reducing or even Eliminate the effect of groundwater on the bottom structure of the tunnel lining, effectively solve the problems of uplift deformation of the tunnel invert or cracking and damage of the tunnel bottom structure in karst or groundwater-developed areas, and ensure the stability and safety of tunnel construction and operation

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