Construction technology of municipal pipeline maintenance

Abstract

The invention relates to a municipal pipeline construction technology and discloses a construction technology of municipal pipeline maintenance. The construction technology of municipal pipeline maintenance solves the problem that in an existing pipeline traction process, a pipeline is prone to being blocked by an obstacle in a guide hole, and the traction of the pipeline is inconvenient. The construction technology of municipal pipeline maintenance includes the following steps that S1, on-site investigation is carried out; S2, a working pit is dug; S4, a guide hole is drilled; S5, the hole isbackward enlarged; S6, a pipeline is backward dragged; S7, pipeline connection is carried out; S8, the pipeline is grouted outside; and S9, drainage wells at both ends are unblocked. The constructiontechnology has the function of driving a traction head to rotate automatically, an axial impact force on an obstacle in the guide hole is changed into a radial acting force, so that the obstacle in adrill hole can be flattened conveniently, and the obstacle can be prevented from blocking the pipeline in the traction process. At the same time, the damage to a traction device is reduced, and thusthe working efficiency is improved.

Description

technical field [0001] The invention relates to a municipal pipeline construction technology, in particular to a municipal pipeline maintenance construction technology. Background technique [0002] Municipal pipeline engineering is an important part of municipal engineering and an important infrastructure engineering facility in a city. Municipal plumbing projects include: water supply pipes, drainage pipes, gas pipes, heat pipes, and power cables. Water supply pipelines: mainly transport and supply domestic water, production water, fire-fighting water, municipal greening and spraying water for cities, including water pipelines and water distribution pipe networks. [0003] Drainage pipes: mainly collect urban domestic sewage, industrial wastewater and rainwater in a timely manner, and transport domestic sewage and industrial wastewater to sewage treatment plants for treatment and discharge, and discharge rainwater nearby. To ensure the sanitation of the city and the safe...

AI Technical Summary

Problems solved by technology

[0008] The disadvantage of the existing technology is that when the pipeline is pulled into the underground borehole, generally by fixing the pulling head at the front end of the pipeline, and then fixing the pulling head with the cable, pulling the pulling head and the pipeline from one end of the borehole to the other end, the pipeline is pulled out. Insert it into the borehole to complete the installation of the pipe; however, during the previous reaming and original pipe crushing process, some stones or original pipe fragments will remain in the borehole, on the one hand, it is easy to block the traction head, When the obstruction is serious, it is necessary to reverse the pipeline to the part, and then strengthen the instantaneous traction force of the traction device on the pipeline to break through the obstruction, so that it will not only reduce the working efficiency, but also easily cause damage to the traction device

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