A Construction Method for Reverse Obstacle Clearance of Pipe Jacking

Abstract

The invention relates to the technical field of pipe jacking construction, in particular to a construction method for reverse obstacle clearing of pipe jacking, including construction measurement, structural reinforcement after jacking, installation of guide rails, reinforcement of obstacle areas, jacking of obstacle clearing pipes, and obstacle clearing Construction, reinforcement of the back wall structure after removal, guide rail modification, preparation for removal of the removal pipe, removal of the removal removal pipe, jacking of the original blocking pipe and other construction steps. The present invention pays attention to the soil support and reinforcement along the construction line before and during the construction, so as to reduce the occurrence of problems such as soil loss and subsidence in the process of clearing; The well advances in the same direction, which can reduce the jacking force of the original blocked jacking pipe, and reduce the impact of the obstacle clearing construction on the pipe jacking construction period; at the same time, according to the construction situation, the wall of the receiving well is reinforced multiple times to increase its bearing capacity. Ability to ensure the safe and orderly progress of the construction process.

Description

technical field [0001] The invention relates to the technical field of pipe jacking construction, in particular to a reverse obstacle clearing construction method for pipe jacking. Background technique [0002] Pipe jacking construction is a construction method without excavating pipelines. First, two foundation pit wells (working well and receiving well) are excavated from the ground; The device applies jacking thrust to the jacking iron installed at the rear end of the jacking pipe (the first section of the jacking pipe is the tool pipe), so that the jacking pipe passes through the reserved opening of the working well and passes through the soil layer to reach the The edge of the reserved opening of the receiving well; then pass through the reserved opening of the receiving well to form the construction of the pipeline. [0003] Since the pipe jacking construction is carried out in the soil layer area, when encountering large obstacles (such as stones, filling blocks, etc...

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Problems solved by technology

[0005] The above-mentioned existing technical solutions have the following defects: the above-mentioned patents use detection, blasting, and removal along the construction line in advance to reduce the obstacles encountered during the pipe jacking construction process, but the method of drilling in advance to remove obstacles is easy Cause changes in the soil along the construction line, and this construction method is not conducive to the ground pipe jacking operation

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