Unequal-height longitudinal beam bearing straight wall bottom plate type lining with longitudinal water collecting and releasing channel formed in tunnel bottom and drainage system structure of lining

Abstract

The invention provides an unequal-height longitudinal beam bearing straight wall bottom plate type lining with a longitudinal water collecting and releasing channel formed in the tunnel bottom and a drainage system structure of the lining. The effect of underground water on the tunnel lining bottom structure is reduced or even eliminated, and the problems that a tunnel inverted arch of a karst orunderground water development area upwards floats and deforms, or the tunnel bottom structure is cracked and damaged is effectively solved to ensure the stability and safety of tunnel construction andoperating. Longitudinal beams fixedly connected with an arch wall secondary lining structure are arranged at the bottoms of side walls on the two sides of the arch wall secondary lining structure toserve as a bearing structure of the arch wall secondary lining structure, and the sections of the longitudinal beams are unequal-height variable sections. A bottom plate is arranged between the longitudinal beams on the two sides, the two transverse ends of the bottom plate are connected with the longitudinal beams on the same side, a box-type construction body is arranged on the lower portion ofa plate body along the longitudinal center, and a longitudinal communicating cavity inside the box-type construction body serves as the water collecting and releasing channel. Drainage systems comprise the arch wall range drainage system, the tunnel bottom drainage system and the tunnel bottom interior drainage system which communicate with the water collecting and releasing 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] According to the investigation, the...

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention is to provide a kind of unequal-height longitudinal beam bearing straight wall bottom slab lining and its drainage system structure provided with longitudinal water collection and discharge channels at the bottom of the tunnel, so as to reduce or even eliminate the effect of groundwater on the bottom structure of the tunnel lining , to effectively solve the problems of uplift deformation of tunnel inverts or cracking and damage of tunnel bottom structures in karst or groundwater-developed areas, so as to ensure the stability and safety of tunnel construction and operation

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