Construction method of steel pipe-jacking crossing bed rock layer based on temporary sleeve butt joint

Abstract

The invention relates to a construction method of steel pipe-jacking crossing bed rock layer based on a temporary sleeve butt joint. When the steel pipe-jacking crossing bed rock layer cannot be carried out normally, first, a steel sleeve is arranged at the head of a pipe-jacking tunneling machine in a striking mode, after hole cleaning, bottom sealing and grouting reinforcement are completed, a temporary working well is formed, tunnel hole forming is carried out through measurement and positioning, then, a forward pipe-jacking tunneling machine performs construction and enters a tunnel, the pipe-jacking construction is carried out in a reversed mode from the terminal of a pipeline design line, until jacking-into the steel sleeve is realized, butt jointing is carried out with a forward jacking pipeline, and the laying of the whole pipeline is completed. The problem that a cutter head is damaged and cannot jack in the steel pipe-jacking construction can be quickly solved, and the engineering risk is low; and the construction method is particularly suitable for the construction situation that jacking-in cannot be carried out when hard soil is encountered suddenly or equipment fails suddenly, and has good market applicability.

Description

Technical field [0001] The invention relates to the technical field of pipe jacking construction, in particular to a construction method when the pipe jacking construction cannot be jacked normally. Background technique [0002] At present, in pipe jacking construction, there is often a relatively hard bedrock in front of the head of the roadheader, which has no effect after repeated pushes. Instead, the cutter head of the roadheader is worn and damaged, resulting in failure to jack up in the follow-up, resulting in construction stagnation and economical Serious loss of social benefits. In the context of this project, there is currently no practical construction method to deal with it. It is difficult to continue to maintain the original path for jacking construction, and the effect is extremely poor, which seriously affects the construction of the project. Therefore, a targeted construction method is needed to solve this problem. Summary of the invention [0003] The purpose of ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for steel pipe jacking through the bedrock layer based on the butt joint of temporary sleeves, aiming at the current situation that there is no suitable construction method to solve the problem that normal jacking cannot be carried out during pipe jacking construction, a specific and effective method is proposed a construction method

Images