Application of Modified Epoxy Resin Spraying Technology in Trenchless Renovation of Drainage Pipeline
The renewal and maintenance technology of urban infrastructure is constantly updated and improved,and the renovation measures for the underground pipes of the urban lifeline should also follow the principles of"fast,efficient,environmentally friendly,and economical",so the drainage pipelines are mostly repaired by trenchless renovation technology.For the problems of cavitation and leakage in drainage pipelines,this paper proposes a trenchless renovation technology by spraying modified epoxy resin.Compared with traditional epoxy resin spraying technology,the modified epoxy resin can be cured at the wet interface,thus simplifying construction.After spraying,the fastest water flow can be achieved in two hours;The bonding performance with the original pipe wall is good,and the later operation and maintenance cost is low;And the resin is environmentally friendly material,no carbon emissions during the construction process,in line with the"double carbon"requirements.This technology can play a non-structural,anti-corrosion and impermeability renovation purpose for drainage pipelines,and realize the spraying renovation of special-shaped sections and inspection wells to extend the service life of repaired components,achieve rapid environmental protection construction,and meet the needs of rapid urban renewal.
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