山岳トンネル(5)

[VI-432] An example of constructing the crossing section of the main tunnel and the working tunnel of a Shinkansen-tunnel

〇Yoshitomo Kawai¹, Nobuki Koya¹, Sunsuke Takiura¹, Keita Nakajima², Soichi Miyazato² (1.Obayashi Corporation, 2.Japan Railway Construction, Transport and Technology Agency)

Keywords:Tunnel intersection, Mountain tunnel, Machine drilling