トンネル (4)

[III-171] Accuracy Verification of Initial Stress Measurement System by Rock Block Loading Test

*Nao Ikeda¹, Hideyuki Murayama¹, Yasuhito Arai¹, Naomichi Matsukawa², Daisuke Fukuda², Junnichi Kodama², Masato Tsuruga³, Kenta Nakamura³ (1. Fujita Corporation, 2. Hokkaido University, 3. A-Tic Corporation)

Keywords:Design of mountain tunnels, Initial stress measurement, Borehole deformation method