High-caliber concrete pipeline jacking construction method

Abstract

The invention discloses a high-caliber concrete pipeline jacking construction method. By means of the construction method, a traditional manual pipeline jacking tunneling mold and a cement-water-balance mechanical pipeline jacking tunneling mold are combined, a second jacking device in a mechanical front guide steel protective cylinder at the front jacking end of a pipeline and a first jacking device on an assembly type rear back wall at the rear end of the pipeline alternately work, and therefore the pipeline is smoothly jacked through, and the pipeline jacking construction method also has the advantage of greatly saving economic cost on the premise of guaranteeing safety and quality.

Description

technical field [0001] The invention belongs to the technical field of concrete pipeline excavation construction, and in particular relates to a large-diameter concrete pipeline pipe jacking construction method. Background technique [0002] Concrete pipe jacking construction is to excavate a working well first, then lower a section of pipeline through the working well, and then jack the lowered pipeline into the soil layer. Usually it is not direct jacking, usually first use the machine head to drill the hole, and then jack while drilling. [0003] At present, in the process of pipeline excavation, there are mainly two methods of manual pipe jacking and mechanical pipe jacking, and there are obvious regional differences, uneven levels, lack of standardized management and other problems, which need to be further optimized. Existing pipeline excavation mainly relies on manual pipe jacking, the excavation speed is slow, and there are great safety risks, causing direct economi...

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Problems solved by technology

[0004] In view of this, it is necessary for the present invention to provide a construction method for pipe jacking of large-diameter concrete pipes, which combines the traditional manual pipe jacking method with the mud-water balance mechanical pipe jacking method, adopts a semi-manual and semi-mechanical method of excavation, and controls The pipeline axis direction and excavation method are optimized to ensure the safety of the staff during the excavation process, improve the efficiency of the excavation, control the cost of the construction process, and solve the problem that the existing pipeline excavation and jacking construction cannot balance low cost and high cost. Technical issues of efficiency and safety

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