A kind of advanced reinforcement construction method for constructing tunnels in ground without self-stabilization ability

Abstract

The present invention relates to a kind of advanced reinforcement construction method for constructing tunnels in stratums without self-stabilization ability, which comprises making a plurality of horizontal jet grouting piles engaged with each other in the diameter direction along the edge of the vault at the opening position to form a consolidated vault; Make a plurality of evenly distributed horizontal jet grouting piles 2 on the upward slope of the other openings except for the opening position, and arrange a number of evenly distributed horizontal jet grouting piles 3 along the inner wall of the cave, through the horizontal jet grouting piles and advanced grouting The tunnel is reinforced by the combination of conduits, which effectively prevents the occurrence of tunnel diseases such as collapse, cracking and rheology, reduces the construction cost of temporary inverted arches and later construction, improves the construction speed, shortens the construction period, and can also Guarantee the total construction period of the project and the safety of later operation, high practicability, and worthy of promotion.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to an advance reinforcement construction method for constructing a tunnel in a stratum without self-stabilization ability. Background technique [0002] There is an old saying: "If you want to get rich, build roads first", which reveals the direct impact relationship between economic development and traffic level. At present, with the increasing economic level and the development needs of traffic, the roads connecting the north and the south of the river Bridge engineering is also developing rapidly, and new technologies are constantly emerging. Among them, there are also many tunnel projects with small clear distances constructed in the mountains in order to shorten the distance. If it is reasonable, there will be tunnel diseases such as collapse, cracking and rheology, which will affect the construction speed and construction period, and even endanger life s...

AI Technical Summary

Problems solved by technology

[0002] There is an old saying: "If you want to get rich, build roads first", which reveals the direct impact relationship between economic development and traffic level. At present, with the increasing economic level and the development needs of traffic, the roads connecting the north and the south of the river Bridge engineering is also developing rapidly, and new technologies are constantly emerging. Among them, there are also many tunnel projects with small clear distances constructed in the mountains in order to shorten the distance. Reasonable, there will be tunnel defects such as collapse, cracking and rheology, which will affect the construction speed and construction period, and even endanger life safety in serious cases, causing major economic losses

This kind of phenomenon is most obvious in strata without self-stabilization ability such as saturated fine sand layer, such as Shangbai Tunnel of Daxi Railway, Liangshan Tunnel of Xiamen-Shenzhen Railway, etc. The traditional single grouting reinforcement has been difficult to solve the technical problem of easy collapse

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