Pipe-jacking starting-frame supporting system and method for constructing tunnel connecting channels

Abstract

The invention relates to a pipe-jacking starting-frame supporting system and method for constructing tunnel connecting channels. The supporting system comprises a stretchable-adjustment bottom jackingsupporting structure fixedly arranged at the bottom of a starting frame, a stretchable-adjustment top jacking supporting structure fixedly arranged at the top of the starting frame and a stretchable-adjustment lateral jacking supporting structure fixedly arranged on the side, away from a to-be-constructed connecting channel, on the starting frame; the bottom jacking supporting structure, the topjacking supporting structure and the lateral jacking supporting structure are jacked and supported into a main tunnel through stretchable adjustment of the bottom jacking supporting structure, the topjacking supporting structure and the lateral jacking supporting structure, and therefore the starting frame is supported into the main tunnel. The starting frame is assembled through the supporting system, assembling and disassembling are fast and convenient, the pipe-jacking starting-frame supporting system and method can better meet the requirements of functionality and structural stability ofnarrow-space tunnel connecting channels, the construction safety risk is reduced, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the field of pipe jacking construction, in particular to a supporting system and method for a starting frame for pipe jacking used in the construction of tunnel communication passages. Background technique [0002] At present, most of the connecting passages of subway tunnels and municipal highway tunnels adopt the method of underground excavation. In areas where groundwater is relatively abundant, civil engineering subterranean excavation methods are basically limited to frozen mine subsurface excavation. However, the freezing method has unfavorable factors such as long construction period, great environmental impact, and high risk. Related accidents are common and the consequences are serious. With adverse consequences such as frost heaving and thawing caused by deep underground freezing, it is increasingly difficult to adapt to urban core areas with complex geological conditions and high environmental protection requirement...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a support system and method for the starting frame of the pipe jacking construction tunnel communication channel, and solve the problem of the platform where the starting frame of the existing pipe jacking method construction communication channel passes through the pouring platform There are problems such as long construction period, loose starting frame, easy deformation and inconvenient dismantling, which increase the amount of construction.

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