山岳トンネル(3)

2:20 PM - 2:30 PM JST(5:20 AM - 5:30 AM UTC)

[VI-619] Construction of the tunnel entrance where a 17m thick talus layer is piled up

*Naoki Goto¹, Tomonori Miyagi², Tamotsu Kurosawa³, Yoshinobu Furuya¹ (1. Obayashi Corporation, 2. Saitama Prefecture, 3. CTI Engineering Co.,Ltd.)

Keywords:

Talus layer,Tunnel entrance,Large cross section,Vertical foreland construction,Triaxial underground displacement measurement