大直径排水管道不断水新建接入井技术探讨

Technology Discussion on Continuous Water Access to New Wells for Large-Diameter Drainage Pipes

基于真南北泵站工程实例经验,探讨在运行状态下的大直径管道的不断水实施新建接入井技术。对于涉及到的技术关键问题,如施工过程中的原管支撑保护、原管道底部土体加固、围护体系完整性受限时的围护方案等,提出相应解决措施,可供后续类似工程参考。

Based on the actual experience of the Zhennanbei Pumping Station project, this paper discusses the implementation of new access well technology for large-diameter pipelines under operating conditions. For the key technical issues involved, such as the support and protection of the original pipe during the construction process, the reinforcement of the soil at the bottom of the original pipe, the enclosure plan when the integrity of the enclosure system is limited, etc. Corresponding solutions are proposed for reference in subsequent similar projects.