Author(s)

Jialian Li

Corresponding Author

Jialian Li

Abstract

Municipal water supply and drainage pipelines are crucial infrastructure for urban operation and public health, responsible for collecting, storing, and safely discharging rainwater and sewage. Their patency directly impacts road lifespan, foundation stability, underground space safety, and residents' quality of life. With the acceleration of urban renewal and an increase in extreme rainfall events, risks such as leakage, misconnection, inadequate node capacity, and road collapse in old pipeline networks are becoming more frequent. Standardized construction, refined inspection and maintenance, and digital monitoring have become key measures to reduce urban flooding, control non-point source pollution, and enhance system resilience. Focusing on the goal of "building one line to drive a whole area," this paper outlines key points from a whole-life-cycle perspective, covering construction preparation, on-site implementation, quality inspection, completion acceptance, and operation and maintenance handover. It proposes operational technical paths such as surveying and verification, material quality control, trench excavation and support, pipeline installation and joint control, and forms a standardized, checklist-based, and closed-loop implementation plan combined with sensitive area diversion, rainwater-sewage diversion improvement, emergency drainage scheduling, and information-based ledgers, providing a reference for enhancing urban drainage safety and environmental quality.

Keywords

Municipal, Water supply and drainage pipelines, Technical key points