A pipeline construction method combining artificial pipe jacking and ramming pipe

Abstract

The invention discloses a pipeline construction method combining artificial pipe jacking and pipe ramming. First, pipe jacking equipment is used to press the pipe into the soil layer until the distance between the top of the first section of the pipe and the end point of the pipe laying is not greater than 100m, and then the pipe jacking is carried out. Replace the equipment with rammed pipe equipment, and use rammed pipe equipment to ram the pipeline into the soil until the pipeline is laid. When applying the method of the present invention to lay the pipeline to the river or the sea, since the pipeline is pressed into the bottom of the riverbed with pipe ramming equipment, there is no need to set up receiving pits and precipitation facilities, which reduces construction costs, reduces construction difficulty, and improves construction efficiency .

Description

technical field [0001] The invention relates to the field of underground pipeline installation, in particular to a pipeline construction method combining artificial pipe jacking and pipe ramming. Background technique [0002] Existing pipeline burial construction technologies usually include the method of directly burying pipelines in open excavation foundation pits and the non-excavation construction method. The commonly used construction methods of the non-excavation method include pipe jacking construction and pipe ramming construction methods. The equipment presses the pipeline into the soil without excavating the ground, and is widely used in modern urban pipeline construction. However, the pipe jacking construction and pipe ramming construction methods have obvious disadvantages in specific applications. For example, when the pipeline needs to be laid to the river or the sea, if the pipe jacking construction method is used to ensure that the head of the pipe jacking ma...

AI Technical Summary

Problems solved by technology

Setting up the receiving pit requires measures such as driving steel sheet pile cofferdams or filling soil to build island cofferdams, and the construction cost is high

In addition, when the water level is relatively deep, the drainage and precipitation work of the receiving pit construction is very difficult, the construction cost is high, and the efficiency is low

In addition, if manual excavation is used in the pipe jacking construction, when the pipe jacking is under the river bed, under the action of hydraulic force, the pipe jacking construction will encounter quicksand, which is easy to collapse, and the safety of the construction personnel cannot be guaranteed.

The rammed pipe construction is a non-direction-controlled pipelaying construction, which is greatly affected by the length, diameter, and stratum conditions of the pipe, and it is difficult to guarantee the pipelaying accuracy. The length should not be too large

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