山岳トンネル (5)

[VI-265] Construction of a tunnel near the Ⅰ baseline in service on the Median Tetonic Line

*Tatsuya Hiramoto¹, Yusuke Kinomura², Takaaki Ishii³, Yusuke Taniguchi⁴ (1. OBAYASHI CORPORATION, 2. OBAYASHI CORPORATION, 3. West Nippon Expressway Company, 4. West Nippon Expressway Company)

Keywords:Ⅱ baseline construction, Proximity construction, Median Tectonic Line, Landslide zone