ZHANG Ding-ding.Application of Large-diameter Steel Pipe Slip Lining with Rigid Pipeline in Long-distance Trenchless Rehabilitation[J].China Water & Wastewater,2020,36(16):121-125.
给水大口径钢管穿插刚性管长距修复应用案例分析
- Title:
- Application of Large-diameter Steel Pipe Slip Lining with Rigid Pipeline in Long-distance Trenchless Rehabilitation
- 摘要:
- 重要市政给水管修复常受制于交通、环境等因素，需要采取非开挖施工工艺。深圳东湖水厂-笔架山水厂原DN1 200预应力混凝土原水管反向供水修复工程，采用DN1 000钢管内穿方案。介绍了非开挖工法的技术经济比选、核心工艺流程、牵引工作坑设置和牵拉力等关键施工技术参数的确定，以及施工过程若干技术问题的处理措施，可以为穿插法应用于大口径钢管与刚性管道之间、超过3 km长距离非开挖修复提供工法启示和指引。
- Abstract:
- The rehabilitation of important municipal water supply pipes is often subject to traffic, environment and other factors, thus trenchless rehabilitation construction method is required. The DN1 000 steel pipe slip lining scheme was adopted in the reverse water supply rehabilitation project of the original DN1 200 prestressed concrete from Donghu water treatment plant (WTP) to Bijiashan WTP in Shenzhen. The technical and economic comparison, the core technological process, the working pit setup, the determination of key construction parameters such as traction force as well as the measures to deal with some technical problems in trenchless construction process were introduced, which could provide enlightenment and guidance for application of slip lining in trenchless rehabilitation between large diameter steel pipe and rigid pipe and for over 3 km distance.
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