Rapid construction method for subsurface section of passageway of subsurface subway station in rock stratum

Abstract

The invention discloses a rapid construction method for a subsurface section of a passageway of a subsurface subway station in a rock stratum. The rapid construction method comprises the following steps: taking a small-cross-section inclined pilot tunnel which is constructed in advance and connects an open excavation section to a station as a slag discharge channel; constructing a subsurface section from the open excavation section to the subway station; conveying residue soil generated in an operation process of the subsurface section into the slag discharge channel by using an excavator or a forklift; conveying the residue soil to a tunnel position of a connection section between the station and the passageway by great gradient of the slag discharge channel; and conveying the residue soil to the ground via a station construction channel by a slag car. The problems are solved that in the traditional method for constructing the subsurface section of the passageway of the subsurface subway station in the rock stratum, risks are high and the efficiency is low in a process of excavating from the open excavation section to the station and discharging slag, and the profile cannot be controlled easily when a tunnel is excavated from the station to the open excavation section; construction safety, construction progress and construction quality are guaranteed.

Description

technical field [0001] The patent of the invention belongs to the technical field of urban rail transit engineering construction, and specifically relates to a rapid construction method for underground excavation sections of subway station entrances and exits in rocky strata. Background technique [0002] With the rapid development of cities in our country, the traffic congestion in large and medium-sized cities has become increasingly congested, seriously affecting the quality of life of urban residents. Accelerating the construction of urban rail transit projects has become the consensus of more and more cities. As an important part of urban rail transit projects, underground excavated subway stations are widely used in central urban areas where there are many traffic flows and pipelines due to their advantages of not affecting ground transportation and less relocation and modification of pipelines. [0003] Since the underground underground subway station is located withi...

AI Technical Summary

Problems solved by technology

[0005] The invention aims to overcome the problems of high risk and low efficiency in the process of excavating slag from the open excavation section to the station in the traditional rock formation underground excavation construction method of the underground excavation section at the entrance and exit of the subway station and the problem that the excavation process from the station to the open excavation section The problem that the contour of the excavation tunnel is not easy to control, to ensure the construction safety, construction progress and construction quality

Images