山岳トンネル (5)

[VI-262] Design and construction of the full face early ring closure method in intersection of railway Tunnel

*Takuya Hashiba¹, Akira Ishikuro¹, Hidekazu Ishii², Kazuma Mochizuki², Yuri Kuwahara² (1. SHIMIZU CORPORATION, 2. Japan Railway Construction, Transport and Technology Agency)

Keywords:NATM, tuff and sandstone, intersection of railway Tunnel, the full face early ring closure method, railway Tunnel