Abstract The West Qinling extra-long tunnel, the longest TBM-driven tunnel in China's railway history, is a double-tube single-track tunnel being constructed using a combination of the drill and blast and TBM methods. Based on environmental and hydrogeological conditions, this paper analyzes: a construction scheme comparison; construction characteristics; the engineering adaptability of the TBM, the design of tunnel lining section and its support parameters; the synchronization of lining and TBM driving; and continuous conveyor belt mucking. It also introduces general information regarding the TBM equipment and tunnel construction.
Abstract：
The West Qinling extra-long tunnel, the longest TBM-driven tunnel in China's railway history, is a double-tube single-track tunnel being constructed using a combination of the drill and blast and TBM methods. Based on environmental and hydrogeological conditions, this paper analyzes: a construction scheme comparison; construction characteristics; the engineering adaptability of the TBM, the design of tunnel lining section and its support parameters; the synchronization of lining and TBM driving; and continuous conveyor belt mucking. It also introduces general information regarding the TBM equipment and tunnel construction.
LI Guo-Liang,
SI Jian-Jun,
Li-Ning
.Construction Scheme of the West Qinling Extra-Long Tunnel on the Lanzhou-Chongqing Railway
[J] MODERN TUNNELLING TECHNOLOGY, 2014,V51(3): 7-14
2014, Vol. 51 