Presentation Information

[VI-1269]Construction Report on Tunnel Excavation through a Weak Fault-Fractured Zone

*Hironobu Kurita1, Toshiaki Miyoshi1, Akito Sannomiya1, Masaya Miura1, Masatoshi Wako2, Yusaku Otsuka2 (1. Tokyu Construction Co., Ltd., 2. Japan Railway Construction, Transport and Technology Agency)

Keywords:

Mountain tunnel,Auxiliary method,Early ring closure,Fault crush zone