非开挖修复在排水管道预防性修复工程的应用

Application of Trenchless Renovation in Preventive Renovation of Drainage Pipelines

摘要:

城市化进程的加速使城市排水管道老化、破裂、渗漏等问题日益凸显，由此造成的路面沉降、水体污染、地下水资源浪费等问题不容忽视。因此需通过对城市管网进行排查，采用非开挖修复、开挖修复等方法，对存在隐患的管道进行预防性修复，恢复管道使用功能，延长管道使用寿命，保证城市排水管道安全稳定运行。以上海市2022年静安区排水管道隐患修复、改造工程为依托，对存在三级及以上结构性缺陷的管道提出相应的预防性修复方案，以期为同类工程提供借鉴。

Abstract:

The acceleration of urbanization has made problems such as aging, rupture and leakage of urban drainage pipelines increasingly prominent. The problems such as pavement subsidence, water pollution and waste of groundwater resources caused by this cannot be ignored. Therefore, it is necessary to investigate the urban pipeline network. The methods of trenchless renovation and excavation repair are used to conduct the preventive renovation of the pipelines with potential hazards, which restore the service functions of pipelines and extend the service life of pipelines in order to guarantee the safe and stable operation of urban drainage pipelines. Relying on the Shanghai 2022 Jingan District Drainage Pipeline Potential-hazard Repair and Reconstruction Project, the corresponding preventive renovation schemes are proposed for the pipelines with structural defects of Grade III or above, aiming to provide a reference for similar projects.