Floating mounting construction method for multiple PE pipes in large jacking pipe

Abstract

The invention discloses a floating mounting construction method for multiple PE pipes in a large jacking pipe. A working well and a receiving well are excavated at the two ends of the jacking pipe correspondingly, and a lower slope path is excavated to a reserved hole of the working well; welding of the PE pipes is completed outside the working well, and a pulling head is welded to the head end of the welded PE pipe; a winch is placed at one end of the receiving well, and a fixing bracket and a roller set are arranged in the receiving well; a steel wire rope wound on the winch manually winds across the roller set, is pulled into the receiving well, is pulled outside the working well through a pulling trolley sequentially along the jacking pipe and the working well, and is connected with the pulling head, and a thin steel wire rope body is tied at the head end of the steel wire rope; water is injected into the jacking pipe to reach a certain water level; and the PE pipe is pulled to a predetermined position through the steel wire rope, water is pumped out, and the PE pipe sinks to the preset position. According to the floating mounting construction method, the welding quality of the PE pipe is improved, the PE pipe is pulled by the steel wire rope to move forwards, the pulling resistance of the PE pipe is reduced through the buoyancy of the water, and the problem of difficult mounting in-place of the multiple PE pipes in the narrow space is solved.

Description

technical field [0001] The invention belongs to the technical field of municipal construction, and in particular relates to a construction method for floating installation of multiple PE pipes in large-scale pipe jacking, which is suitable for installing multiple PE pipes in pipe jacking passing through rivers, lakes, highways and railways. Background technique [0002] At present, pipeline projects passing through rivers, lakes, highways, and railways generally adopt the structural form of multiple PE pipes built into the casing. For the construction of multiple PE pipes in the casing, there are two construction plans that can be adopted: one is to pour a cushion at the bottom of the casing, lay the track, place the PE pipes on the transport trolley, and use the traction method to transport the PE pipes. The pipe is put in place; the other is to install a set of guide wheels at a certain distance around the casing, and use traction to place in place. However, there are def...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a construction method for the floating installation of multiple PE pipes in a large-scale pipe jacking, which realizes the installation of multiple PE pipes in a narrow space, and successfully solves the problem of multiple PE pipes in the pipe jacking. Difficult to install

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