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[III-143] Initial Stress Measurement by the Compact Conical ended Borehole Overcoring Using a Standalone Data Logger

*Nao Ikeda¹, Hideyuki Murayama¹, Keita Shibuya², Junnichi Kodama², Daisuke Fukuda², Masato Tsuruga³, Kenta Nakamura³ (1. Fujita Corporation, 2. Hokkaido University, 3. A-Tic Corporation)

Keywords:Initial stress measurement, Compact Conical ended Borehole Overcoring, data logger