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