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上海市某隧道复线工程浦西暗埋段与日晖港斜交。施工期间,日晖港西侧肇家浜泵站须正常运营;同时,在隧道上方新建泵站排水箱涵的接长结构。复线隧道浦西暗埋段分阶段施工实现了隧道在港内的“水路翻交”。介绍了该段基坑施工总体筹划,在港内设置围堰将复线隧道划分为多个施工阶段,并在围堰的保护下,进行隧道暗埋段的围护、结构等施工;总结了水上深基坑和清淤填浜主要施工技术。目前,该隧道已正式通车运营4年多,隧道内渗漏水及沉降情况正常。该施工技术可为类似工程提供参考。
Shanghai a tunnel double-track project Puxi buried section and Rihui port bias. During construction, the Zhaojia Bang pump station on the west side of Rihui Harbor shall be operated normally; meanwhile, a new long-distance structure of drainage culvert shall be built at the top of the tunnel. Double-track tunnel Puxi buried section construction in phases to achieve the tunnel in the harbor “water turn ”. The overall planning of the construction of the foundation pit is introduced. The cofferdam is set in the harbor to divide the double-track tunnel into multiple construction stages. Under the protection of the cofferdam, the construction of the envelope and structure of the buried tunnel is carried out. Foundation Pit and Clearance Sedimentation Main Construction Technology. At present, the tunnel has been officially opened to traffic for more than 4 years, and the tunnel seepage and settlement conditions are normal. The construction technology can provide reference for similar projects.