Non-excavation directional drilling construction method for municipal pipeline

Abstract

The invention discloses a non-excavation directional drilling construction method for a municipal pipeline. The non-excavation directional drilling construction method for the municipal pipeline is mainly suitable for carrying out laying construction when various pipelines cross rivers, roads, buildings and other obstacles and an open excavation manner cannot be applied; the laying pipe diameter is 50 to 600mm; and the laying distance is 50 to 200m. The construction process comprises the steps of preparing for construction; designing a trace; staking out in survey; constructing a working pit;positioning and debugging a directional drilling machine; preparing a slurry; drilling a guiding hole; chambering step by step; welding and reinforcing a pipeline, and pulling back the pipeline; constructing an inspection well; and backfilling a foundation pit. According to the construction method provided by the invention, without influencing the original physiognomy, road traffic, river running,and greening vegetation, the penetration problem caused by the existence of a complete building at the original design pipeline excavation section is quickly solved, so that the construction land isreduced, the construction period is shortened, the construction efficiency is improved, the personnel investment is reduced, the investment cost is saved, and the laying direction, the laying depth and the laying accuracy of the pipeline are improved.

Description

technical field [0001] The invention relates to the technical field of infrastructure engineering, in particular to a trenchless directional drilling construction method for municipal pipelines. Background technique [0002] During the construction of municipal roads, a large number of supporting pipelines are involved. At present, the slotting method is used in our country for construction. However, most domestic projects lag behind the release of pipeline drawings, resulting in the fact that some pipeline drawings are not ready for excavation construction when they are issued. Abolished, affecting road traffic, and there are quality risks, but also increase the waste of resources, greatly increase the construction cost and can not meet the requirements of the construction period. Contents of the invention [0003] The purpose of the present invention is to provide a non-excavation directional drilling construction method for municipal pipelines in view of the waste of r...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a non-excavation directional drilling construction method for municipal pipelines in order to solve the problem of resource waste, cost increase and inability to meet the construction period requirements in the existing traditional open-cut excavation method, so as to solve the problem of the originally designed pipeline position section. There are problems such as low construction efficiency and increased investment costs caused by rivers and completed structures

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