厦门轨道交通2号线跨海段方案研究

Study on the Cross-sea Tunnel Scheme of Xiamen Metro Line 2

厦门轨道交通2号线作为国内第一条地铁下穿海域的轨道线路,其跨海段为2号线全线的关键工程与控制性工程。该段地质条件复杂,周边控制性因素多,为降低工程风险、减少工程投资、缩短施工工期,从线路、车站建筑、地质条件、施工工法、工程投资等角度对跨海段方案进行了综合分析,并结合国内外成熟的隧道设计经验,提出了厦门2号线跨海区间的隧道建设方案,为轨道交通2号线跨海段的线站位方案选择提供参考。

Xiamen Metro Line 2 is the first subway line wear under the sea.The Cross-sea tunnel is a key proj ect in No.2 line and control engineering.This proj ect had a complex geological condition and many surrounding control factors.In order to reduce proj ect risk,reduce the engineering investment, shorten the construction period,from the point of view of the path,the station construction,geolog-ical conditions,construction methods and proj ect investment,the sea-crossing scheme are analyzed combining with domestic and foreign mature experience in tunnel design.The solution of Xiamen Met-ro Line 2 cross sea tunnel interval is put forward,which provide a reference for the selection of sea crossing positioning options of Xiamen Metro Line 2 segments.