Part repair structure for steel lining of drainage pipeline

Abstract

The invention relates to a part repair structure for a steel lining of a drainage pipeline. The part repair structure for the steel lining of the drainage pipeline comprises a steel lining short pipe, polyurethane dense grout, asbestos oakum padding wiping tapes, a quick-setting cement chamfer and outward grouting pipes. The steel lining short pipe is arranged in a pipeline to be repaired, the asbestos oakum padding wiping tapes are used for sealing joints at the gap position between the pipeline to be repaired and the two sides of the steel lining short pipe in an embedded mode, then the quick-setting cement chamfer is used for painting, and the gap between the pipeline to be repaired and the steel lining short pipe is densely filled with the polyurethane dense grout, grouting holes are formed in the toroidal cross sections on the two sides of longitudinal joints in the pipeline to be repaired, outward drilling grouting pipes are inserted into the grouting holes, grouting is conducted from the inside of the pipeline to the outside of the pipeline, and soil bodies on the periphery of the pipeline is reinforced. The part repair structure for the steel lining of the drainage pipeline has the advantages of being good in quality stability, high in hoop rigidity, good in non-deformability, long in service life and the like, and is particularly suitable for pipeline repair on the conditions that a drainage pipeline with the large diameter is large in joint dislocation degree and disjointing degree and is obviously deformed.

Description

technical field [0001] The invention relates to a drainage pipeline repair structure, in particular to a partial repair of the steel inner lining of a drainage pipeline with a relatively large diameter (≥Ф800mm), and belongs to the technical field of drainage pipeline non-excavation repair engineering. Background technique [0002] With the acceleration of the urban process, the drainage pipe network is closely related to people's life and work, and shoulders important functions such as urban sewage and rainwater discharge. However, due to various reasons, the drainage pipes in many cities in our country are damaged to varying degrees. If they are not repaired in time, they may pollute the groundwater or cause road surface subsidence, which will cause harm to traffic safety and the lives and properties of citizens. In particular, large-diameter underground drainage pipes are mostly laid in sections. After being put into use, due to the natural environment, hydraulic conditio...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above disadvantages, and to provide a method to effectively solve the problems of large-diameter (≥Ф800mm) drainage pipe interface dislocation (≤25cm), large disconnection, and obvious deformation of the pipe, so that after repair The pipe quality stability is good, the ring rigidity is high, the anti-deformation ability is strong, and the drainage pipe steel lining partial repair structure with long service life

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