Abstract：The connecting-passage construction is an accident-prone phase in the construction of shield tunnel and improving the stability of the surrounding soil by adopting efficient reinforcement methods is the key to ensure the connecting-passage construction safety．This paper presented the common reinforcement methods of connecting-passage，and according to the characteristics of Nanning water-rich round gravel stratum a detailed comparison analysis is made of the reinforcement methods appropriate for the formation of the connecting-passage of shield tunnel. Finally the pre-reinforcement method of lain concrete continuous wall and paste-slurry technology is carried out in the connecting-passage of Sansu Tunnel in Nanning subway line 2. The ground surface deformation, the groundwater level, the deformation of the connecting-passage and associated information were monitored during the construction and the results measured were analyzed. The practice showed that lain concrete continuous wall and paste-slurry technology can ensure the safety of the connecting-passage construction, which may provide certain reference for similar projects.
陈雪莹 谭忠盛 袁杰 王冠 李俊卫. 富水圆砾地层盾构隧道联络通道加固技术研究[J]. 土木工程学报, 2017, 50(S1): 105-110.
Chen Xueying Tan Zhongsheng Yuan Jie Wang Guan Li Junwei. Case study on soil reinforcement method for the cross-passage construction of shield tunnel in water-rich round gravel stratum. 土木工程学报, 2017, 50(S1): 105-110.
