CIPP pipeline structural repairing method

Abstract

The invention provides a CIPP pipeline structural repairing method. The method comprises the following steps that S1, the upstream and the downstream of a pipeline to be repaired are blocked, the interior of the pipeline to be repaired is cleaned, and flatness repairing treatment is conducted; S2, a polyester resin mixed solution is used for impregnating a basalt-reinforced CIPP lining hose, the basalt-reinforced CIPP lining hose comprises three layers of materials including a CIPP lining inner film, a CIPP lining composite material and a CIPP lining outer film in sequence from inside to outside, the CIPP lining composite material comprises five layers of materials including a polyester resin layer, a felt layer, a fiber woven layer, a felt layer and a polyester resin layer in sequence from inside to outside; S3, the basalt-reinforced CIPP lining hose is introduced into the pipeline to be repaired, and the basalt-reinforced CIPP lining hose is attached to the inner wall of the pipelineto be repaired; and S4, the basalt-reinforced CIPP lining hose is subjected to curing treatment. The method has the beneficial effects that the basalt-reinforced CIPP lined hose has higher tensile strength and shear strength, better mechanical properties and longer service life, and can be used for structural repair of pressure pipelines.

Description

technical field [0001] The invention relates to the technical field of pipeline repair, in particular to a CIPP pipeline structural repair method. Background technique [0002] Urban underground pipelines are the "lifeline" to maintain the normal life of urban residents, and the quality of urban underground pipelines directly affects people's quality of life. With the increasing economic level of our country and the acceleration of urbanization process, the use of open cut method to repair urban underground pipelines will have a great impact on the surrounding traffic and the normal life of residents, and many pipelines buried under the foundation of buildings cannot be excavated. Therefore, the trenchless pipeline repair method came into being. The traditional CIPP repair method is to turn the felt hose impregnated with epoxy resin or polyester resin into or pull it into the pipeline to be repaired, pass it through hot water or steam to cure it, and form a relatively stron...

AI Technical Summary

Problems solved by technology

The traditional CIPP repair method is to turn the felt hose impregnated with epoxy resin or polyester resin into or pull it into the pipeline to be repaired, pass it through hot water or steam to cure it, and form a relatively strong lined pipe and the original pipe after curing. Bonding can repair most of the structural defects of the pipeline, but this process also has some disadvantages, such as high cleaning requirements for the original pipeline, long resin curing time (about 5h), high cost, and difficult Effective repair of pressure pipelines, etc.

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