Trenchless Construction Method of Super Large Diameter PE Drainage Pipe

Abstract

The invention belongs to the technical field of pipeline laying and particularly relates to a non-excavation construction method of an ultra-large-diameter poly ethylene (PE) drain pipe. The technical problem that an existing ultra-large-diameter PE drain pipe is high in laying difficulty and the like is solved. The non-excavation construction method comprises the steps: A, drilling; B, device installation; C, pipe distribution for the first time; D, continuous pipe distribution; E, pipe distribution completion. The non-excavation construction method of the ultra-large-diameter PE drain pipe has the advantages that the construction is simple, the traction difficulty of an ultra-large-diameter PE drain pipe body is low, excavated construction pits are small, slippage does not easily occur during dragging, the pipe body does not easily break and is not easily scratched during dragging and is high in sealing performance, the inside of the pipe body is not required to be cleaned, and abutting joint of the pipe body is firm.

Description

technical field [0001] The invention belongs to the technical field of pipeline laying, and in particular relates to a non-excavation construction method of a super-large diameter PE drainage pipe. Background technique [0002] With my country's "Twelfth Five-Year Plan" and "Thirteenth Five-Year Plan" and the planning of the Ministry of Housing and Urban-Rural Development and the acceleration of urbanization, and due to the launch of my country's "rain and sewage diversion" project, the implementation of the plan to solve "urban waterlogging", super large diameter pipes There are more and more laying pipes with a diameter of more than 1600mm. The existing pipe laying methods generally include the following types: excavation laying, trenchless dragging laying, pipe jacking laying, immersed pipe laying, lining laying, public Ditch laying etc., although above-mentioned multiple laying methods are arranged, still can't satisfy the needs of current national economic development. F...

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Problems solved by technology

[0004] The above-mentioned scheme solves the existing problem of non-excavation laying of pipelines with a diameter of more than 0.8 meters to a certain extent, but this scheme still exists when laying super-large-diameter pipes, such as pipes with a diameter of more than 1.6 meters: the construction is difficult, The pipe body is difficult to pull, the construction pit that needs to be excavated is large, it is easy to slip off when dragging, the pipe body is easy to break when dragging, the pipe body is easy to scratch, the pipe body is poorly closed, and the pipe body is not firmly connected.

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