山岳トンネル (11)

[VI-295] Analysis and verification of evacuation connection tunnel section width in the large section tunnel with poor geological conditions

*Nobuhiko Azetsu¹, Yoshikatsu Maeda¹, Yuukou Sugitani², Naoki Ikushima², Hideaki Mikami² (1. West Nippon Expressway Company Limited, 2. TODA CORPORATION)

Keywords:tunnel, simultaneous excavation of upper and lower lines, evacuation connection tunnel, 3D FEM analysis