Pipeline traction construction method

Abstract

The invention provides a pipeline traction construction method. The pipeline traction construction method comprises the following steps that S1, construction preparation is conducted; S2, a guide hole is formed, specifically, the guide hole is formed according to a pre-designed track through a drilling machine and a guide instrument; S3, hole expanding is conducted step by step; S4, pipe burying is conducted in a traction mode, specifically, pipes are connected into a pipeline matched with a drilled hole in length, the two ends of the pipeline are closed, one end of the pipeline is connected with a drill bit, and the pipeline is dragged into the formed drilled hole through the drill bit; and S5, a closed water test is conducted, specifically, water is flushed into the pipeline, pressurization is conducted, and appearance inspection is conducted on the pipeline. According to the pipeline traction construction method, the inner diameter of the drilled hole is continuously increased through the drill bit with the diameter being gradually increased, the impact force borne by the drill bit in the drilling process can be reduced, the service life of the drill bit is prolonged, and the success rate of drilling and the smoothness of the interior of the drilled hole are ensured.

Description

technical field [0001] The invention belongs to the technical field of construction methods, and in particular relates to a pipeline traction construction method. Background technique [0002] Pipeline traction construction belongs to one aspect of trenchless technology. Trenchless technology refers to excavating a very small part of the surface (generally referring to small area excavation at the entrance and exit) by means of steering and directional drilling. The new construction technology for laying, replacing and repairing various underground pipelines has little disturbance to the surface, so it has high social and economic effects. It mainly includes technical methods such as horizontal directional drilling, pipe jacking, micro-tunneling, pipe bursting, and impact. The technology originated in the 1970s and was introduced to my country in the 1990s. It is widely used in the construction of new pipelines and the repair of old pipelines in the fields of water supply, ...

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned prior art, the borehole is drilled at one time, and the construction is difficult. In addition, the inside of the borehole is not protected during the drilling process, and the borehole is easy to collapse, which further increases the difficulty of construction.

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