Jacking pipe construction method for trimming deviation by reverse jacking of steel pipe casing

Abstract

The invention relates to a jacking pipe construction method for trimming deviation by reverse jacking of a steel pipe casing. A construction person can clean soil in a steel casing pipe from one sideof a receiving well and enters the steel casing pipe for dismounting a machine head and dismounting a deviated concrete pipe, through the steel casing pipe, the constructor is protected, when the machine head and the concrete pipe are dismounted, the danger caused by collapse of the construction position is not prone to happening, a new concrete pipe is jacked from the receiving well to be connected with an original concrete pipe in a seam abut joint manner, according to an existing axis precision, burying is continuously carried out until the concrete pipe extends out of the receiving well, the position between the steel casing pipe and the concrete pipe is filled with the concrete, the concrete pipe is supported, construction of the last segment of jacking pipe close to the receiving well is finished, a jacking pipe system is adopted in the construction method for finishing pipeline deviation rectifying, the damage to the environment due to the fact that traditional jacking pipe deviation rectifying construction adopts a method of ground excavating for deviation rectifying can be avoided, construction cost of earth excavation and site recovering can be saved, construction operation is easy, the process saves time, and the method is efficient and safe.

Description

technical field [0001] The invention relates to the technical field of pipe jacking construction, in particular to a construction method of reverse jacking steel pipe sleeve trimming and offset pipe jacking. Background technique [0002] The current pipe jacking construction method is a non-excavation construction method, through which the pipeline can be buried with little or no excavation. When the pipe jacking construction method is working, the jacking force generated by the pipe jacking machine is used to overcome the friction between the pipe and the surrounding soil, so as to push the pipe into the soil layer according to the designed slope and transport the earth away. Push the tool pipe or machine head from the working pit through the soil layer to the receiving pit for hoisting. With the work of the pipe jacking machine, the pipe will pass through the soil layer from the working well and enter the receiving well. The pipeline follows the tool pipe or machine head ...

AI Technical Summary

Problems solved by technology

[0003] However, in the actual construction process, the pipe jacking is prone to extension errors, such as the collapse of the earth below the pipe, which makes it difficult for the pipe jacking construction to be shaped according to the design axis

Especially when the pipe jacking deviation reaches tens of centimeters and the position of the pipe jacking deviation is relatively close to the receiving well, the traditional construction method of deviation correction for pipe jacking construction cannot complete the large deviation due to the short distance and the limited angle of deviation correction. Correction, or there are defects such as cumbersome and complicated correction procedures, high construction costs, secondary damage to the environment, etc., and are also easily restricted by on-site construction conditions

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