Branch connection construction method for underground pipeline

Abstract

The invention provides a branch connection construction method for an underground pipeline to enable an underground branch pipe to be connected with a main pipe. The branch connection construction method comprises the steps that the soil body on the outer portion of the part, where the branch pipe is connected into the main pipe, of the main pipe is strengthened; the branch pipe is ejected into the part close to the outer wall of the main pipe through a pipe ejecting construction technology; a hole is formed in pipe wall of the part, where the branch pipe is connected into, of the main pipe; and the branch pipe and the main pipe are connected. By means of the branch connection construction method, it is achieved that branch connection construction of the pipeline is transferred to an underground part from the ground, original pipeline relocation caused by construction is avoided, the defects that a road and the traffic are occupied by ground construction are overcome, the construction method is reliable and environmentally friendly, and generated public hazards such as vibration, noise and dust are reduced to the maximum.

Description

Technical field [0001] The invention relates to the field of urban construction, in particular to a construction method for underground pipeline support. Background technique [0002] When underground pipeline construction is carried out on urban roads, there is a connection construction between branch pipes and main pipes. Under normal circumstances, a foundation pit is formed by excavating the road surface, and then branch pipe access construction is carried out in the foundation pit. With the development of urban construction, underground pipelines form a criss-cross three-dimensional spatial arrangement under the road. When new underground branch pipes are connected to old main pipes, traditional methods often cause a large number of pipelines to be relocated and occupy congested traffic roads. At the same time, vibration noise and dust generated during construction will pollute the surrounding environment. Summary of the invention [0003] The purpose of the present inventi...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for branch connection of underground pipelines, so as to solve the problems of occupying a large amount of surface sites and traffic roads and destroying the surrounding environment when carrying out branch connection construction of underground pipelines on the surface in the prior art

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