宁波轨道交通1、2号线越江盾构隧道风险分析及施工技术

A Study of Risk Analysis & Construction Technology of Crossriver Shield Tunnel in Ningbo Rail Transit L1 & L2

宁波市轨道交通1号线江厦桥东站—东门口站区间隧道需穿越奉化江,2号线桃渡路站—鼓楼站区间隧道需穿越余姚江,越江盾构隧道工程环境条件复杂,施工风险大。结合工程实际工况分析宁波轨道交通越江隧道施工风险和难点,并说明实际过程中采取的相应施工技术措施,为宁波类似工程中盾构机顺利完成越江施工提供参考依据。

With the background of Ningbo rail transit engineering, the running tunnel from East Jiangxia Bridge Station to Dongmenkou Station of L1 has to cross Fenghua River and the running tunnel from Taodu Rd. Station to Gulou Station of L2 has to cross Yuyao River. There are complicated engineering conditions and high construction risks in crossriver shield tunnel. Combined with the practical conditions, the relative risks and difficulties are analyzed, and moreover, the relevant adopted technical measures are introduced during the construction period, which may provide references for similar shield machine completing crossriver construction successfully in Ningbo.