To investigate defect patterns in urban drainage pipelines and enhance the planning and repair of drainage networks,this paper utilizes defect data from CCTV inspections of 233 drainage pipelines in a Shanghai district,spanning from 2016 to 2022.The study statistically analyzes the distribution patterns of pipeline defects and proposes straightforward,practical repair principles.The Ultraviolet Cured-in-Place Pipe(UV-CIPP)meth-od is selected as the primary technique for trenchless repair,and the calculation method for the wall thickness of the pipe liner is also provided.The proposed method has been applied to systematically repair a large number of defective pipelines in annual batches.Those practical applications demonstrate the method's feasibility,achie-ving effective repair outcomes and significant social benefits.This study provides valuable insights for planning urban drainage networks and the repairing pipeline defects.
维普
万方数据
