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污水治理三期工程是上海新一轮环保三年行动计划中的水环境治理重点项目。工程完成后,上海中心城区即可实现污水管网全覆盖,并新增109万m~3/d的污水收集量,上海北部和东北部地区243万居民生活环境由此将得到有益的改善。本工程是上海首次对大口径DN3500管道实施长程曲线顶管施工,文中对顶进过程中轴线易产生偏差的原因进行了分析,对纠偏控制措施和施工工艺改进进行了总结,为类似的工程提供有益的借鉴。
Wastewater Treatment Phase III Project is a key project of water environment treatment in Shanghai's new round of environmental protection three-year action plan. After the completion of the project, the urban area of Shanghai will be fully covered by the sewer network, with an additional 1.09 million m3 of wastewater collected. The living environment of 2.43 million residents living in the northern and northeastern regions of Shanghai will be greatly improved. This project is the first time that Shanghai has carried out long-distance curve pipe jacking construction on DN3500 pipeline with large diameter. The paper analyzes the reason of deviation of the axis during the heading process, summarizes the correction control measures and construction process improvement, and provides similar projects Useful reference.