Novel super-large-section roadway rapid tunneling process

Abstract

The invention provides a novel super-large-section roadway rapid tunneling process, and relates to the technical field of roadway tunneling construction. The novel super-large-section roadway rapid tunneling process comprises the following steps of step S1, setting up a shield tunneling machine at an excavation site, and cutting a target position into a circular roadway with a specified diameter by using the shield tunneling machine; step S2, supporting the upper half part of the formed circular roadway; step S3, after the shield tunneling machine continuously cuts and supports a certain distance, retracting the shield tunneling machine, and performing centralized blasting or pneumatic pick process on the circular roadway; and step S4, filling the middle of the bottom surface of the circular roadway with the above-mentioned culled gangue to keep an entire bottom plate at a level, and at the same time, supporting a formed straight wall part. Compared with the prior art, the novel super-large-section roadway rapid tunneling process provided by the invention has the characteristics of being high in mechanization level, fast in tunneling speed and fast in roadway forming, solves the problems of difficult construction and slow tunneling speed of an underground super-large-section roadway, and has obvious advantages in long-distance super-large-section roadway tunneling construction.

Description

technical field [0001] The invention relates to the field of roadway excavation construction technology, in particular to a novel super-large-section roadway rapid excavation process. Background technique [0002] At present, there are two kinds of tunneling construction techniques for underground tunnels: gun excavation and fully mechanized excavation. In super-large-section roadway excavation, the effects of these two technologies are not good. The construction of blasting technology is difficult and the progress is slow; the cutting size of fully-mechanized excavator equipment is small, and it is difficult to form a roadway. [0003] Limited by the cutting size of the fully-mechanized excavator, the roadway is too high and the cutting arm cannot reach it; the roadway is too wide, and the fully-mechanized excavator needs to swing from side to side to cut, but limited by the rear transport belt, the left-right swing of the fully-mechanized excavator is limited. Therefore, ...

AI Technical Summary

Problems solved by technology

In super-large-section roadway excavation, the effects of these two technologies are not good, and the construction of blasting technology is difficult and the progress is slow; the cutting size of fully mechanized excavator equipment is too small, and it is difficult to form a roadway.

[0003] Limited by the cutting size of the fully-mechanized excavator, the roadway is too high and the cutting arm cannot reach it; the roadway is too wide, and the fully-mechanized excavator needs to swing left and right to cut, but limited by the rear belt, the left-right swing of the fully-mechanized excavator is limited

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