A kind of non-excavation construction method of polyethylene pipe

Abstract

The invention provides a non-excavation construction method for polyethylene pipes, comprising the following steps: designing the guide hole track; performing compaction grouting on the foundation soil layer along the building wall, supporting the building wall and installing a monitoring device Carry out real-time monitoring; connect the navigation probe to the pilot bit of the drilling rig, perform data analysis and adjust parameters during drilling to complete the drilling of the pilot hole trajectory; ream the hole and continuously add drilling fluid into the hole through the reaming bit until the target aperture is reached, clear Drilling cuttings in the hole form a smooth channel; repeat the operations of pulling back the drill pipe and taking over the pipe at a uniform speed until the polyethylene pipe is covered with a smooth channel; grouting the gap between the polyethylene pipe and the smooth channel to prevent settlement. Adopting the non-excavation construction method of polyethylene pipe according to the technical solution of the present invention, the construction method can protect cultural relics buildings from damage, ensure that the drill bit completes the drilling operation along the set track, and avoid scratches on the surface of the pipe and pipe breakage during the construction process and land subsidence.

Description

technical field [0001] The invention relates to the technical field of pipeline laying, in particular to a non-excavation construction method for polyethylene pipes. Background technique [0002] Trenchless technology refers to the use of rock and soil drilling, directional measurement and control and other technical means to cross rivers, lakes, important traffic arteries, and important buildings without digging trenches on the ground surface and with minimal damage to the stratum structure, to realize water supply , coal gas, natural gas, sewage, telecommunication cables and other public pipeline detection, laying, repair and replacement construction technology. Trenchless technology is an extremely important construction method for laying pipelines in cities, and polyethylene pipes have the characteristics of high strength, high temperature resistance, corrosion resistance, and non-toxicity, and are widely used in water supply pipelines and gas pipelines. The laying of p...

AI Technical Summary

Problems solved by technology

[0003] With the needs of urbanization construction, some ancient capital cities also need to lay underground pipes, and these cities retain many cultural relics buildings. building damaged

Furthermore, due to the complex and changeable stratum, the construction process may pass through the silt layer, clay layer, sand layer and rock layer, etc., which can easily lead to deviations in drilling during the drilling process, resulting in inconvenience in construction

In addition, the non-excavation construction process of polyethylene pipes in the prior art also often causes scratches on the pipe surface, pipe fractures and surface subsidence

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