山岳トンネル(8)

2:10 PM - 2:20 PM JST(5:10 AM - 5:20 AM UTC)

[VI-1284] Construction Report on the Tunnel Portal in Fragile, Shallow Overburden Ground

*Yudai Shigemoto¹, Ryohei Hase¹, Dota Awaji¹, Ryoichi Asaumi¹, Kenichi Adachi¹, Michinari Nakano², Yoshihiro Otsubo² (1. SHIMIZU CORPORATION, 2. Kobayashi Civil Engineering Office, Miyazaki Prefecture)

Keywords:

Propyrite,Hydrothermal Alteration,Tunnel Portal,Shallow Overburden,Auxiliary Support Method