Construction method of steel jacking pipe crossing bedrock layer based on temporary sleeve butt joint

Abstract

The invention relates to a construction method for steel pipe jacking through the bedrock layer based on the butt joint of temporary sleeves. When the steel pipe jacking through the bedrock layer cannot be jacked normally, firstly, the steel casing is drilled at the head of the pipe jacking machine. After completion of hole cleaning, bottom sealing and grouting reinforcement, a temporary working well is formed, and the opening of the door is carried out through measurement and positioning. Then, the pipe jacking machine is constructed in the forward direction and the pipe jacking construction is carried out in the reverse direction from the end of the pipeline design line. , until the jacking steel casing is docked with the forward jacking pipeline to complete the overall pipeline laying. The invention can quickly solve the problem that the cutterhead is damaged and cannot be jacked due to obstacles encountered in the construction of steel pipe jacking, and the engineering risk is low. 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 normally jacked in. Background technique [0002] At present, in the pipe jacking construction, there is often a relatively hard bedrock in front of the head of the roadheader. After several times of jacking, it has no effect. Instead, the cutterhead of the roadheader is worn and damaged, resulting in the failure of subsequent jacking, resulting in construction stagnation and economical The loss of social benefits is serious. Under the background of this project, there is currently no feasible construction method to deal with. 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 INVENTI...

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