Drainage pipeline spraying-repairing construction process

Abstract

The invention discloses a drainage pipeline spraying-repairing construction process. The construction process comprises the following steps: opening an operation well lid and upstream and downstream well lids for realizing ventilation; plugging water in an upstream box culvert; dredging the inside of a repaired pipeline; washing the inner wall of the repaired pipeline, drying the washed inner wall of the repaired pipeline, placing a spraying device capable of moving along the repaired pipeline at the starting point of the repaired pipeline, connecting a spraying material mixing device and a spraying device by adopting a special long conduit, enabling the spraying device to move along the repaired pipeline, and along with the walking of the spraying device, enabling a rotating spray nozzle to carry out the spraying operation on the inside of the repaired pipeline after the rotating spray nozzle rotates along the rotation center. The process is simple, the operation is convenient, the service efficiency is high, and the service life of the drainage pipeline can be prolonged after the drainage pipeline is repaired. In addition, the operation of an operator inside the pipeline is avoided, therefore, the personal safety of the operator is protected, and the work efficiency is improved.

Description

technical field [0001] The invention relates to a drainage pipeline repairing technique in the technical field of municipal engineering, in particular to a drainage pipeline repairing construction technique by spraying. Background technique [0002] Urban water supply and drainage pipelines are an important part of urban municipal facilities, and at the same time they are the underground lifeline of the city. They are responsible for the supply of tap water and the discharge of rainwater and sewage. With the expansion of city scale, the construction speed and scale of pipeline projects have reached an unprecedented high level. For example, the pipeline mileage in the downtown area of ​​Guangzhou has reached 1297.495 km. With the development of the economy, the scale of urban construction is getting bigger and bigger, the drainage pipelines are getting longer and longer, and the remaining service life of the pipelines is getting shorter and shorter. According to statistics, ...

AI Technical Summary

Problems solved by technology

However, this method currently mainly uses workers to spray in the pipeline with a hand-held spray gun, and is mainly suitable for the in-situ repair of large-diameter pipelines above 800 mm or irregularly shaped pipelines. Personal safety poses a great threat. Due to the difference in worker proficiency, the level of engineering quality will be uneven, and it is difficult to apply to the repair of small-diameter diseased pipelines.

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