Trenchless pipeline traversing method integrating drilling and propping

Abstract

The invention discloses a trenchless pipeline traversing method integrating drilling and propping. The trenchless pipeline traversing method comprises the following steps: carrying out guide hole construction with a horizontal directional drilling machine to determine the path of a pipeline; providing a pipe pusher head, wherein the pipe pusher head comprises a cylindrical housing, a cutter head is arranged at the front end of the housing, and is driven by a hydraulic power system arranged in the housing, and a drill rod joint connected with a drill rod is arranged at the front end of the cutter head; digging a guiding pit at the earth removing end of a guide hole, and paving a guide rail, wherein two ends of the pipe pusher head are connected with the pipeline and the drill rod respectively, and the pipe pusher head is arranged on the guide rail; carrying out borehole enlargement by drawing back and piping work. The trenchless pipeline traversing method is high in adaptability, and simple in guiding, and has the advantages that one-pass construction of a long pipeline can be realized in an unstable stratum without construction of a casing pipe; the over-excavation workload of the pipe pusher head is very low, so that a relatively small circular space can be formed, the consumption of lubricating slurry is reduced as well, and the possibility of ground subsidence or uplift is reduced; paving of the pipeline of the whole construction can be fulfilled in one step while the construction speed is high.

Description

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AI Technical Summary

Benefits of technology

This patented technique involves making temporary holes within an existing drilled borehole before continuously digging up new ones until they pass over them. By doing this, the technical effect of the invent lies in reducing costs associated with building permanent structures while maintaining efficient operations. Additionally, the inception of the current methods requires multiple stages of creation and installation, leading to longer downtime periods due to subsidence issues. Overall, these techniques aimed towards improving efficiency and reliability in exploring deep trenches safely.

Problems solved by technology

This patented method described for improving tunneling efficiency during horizontal directionally drilled holes involves various issues such as long work hours due to multiple steps involved before reaching certain depths or complex ground situations caused by different types of rocks that may be present at varying levels within these areas. Additionally, when trying to maintain stability through excavation techniques like backhoe digging, guiding pipes can also cause difficulties with accurate placement on specific locations along the length of the tunnel.

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