Conical-ended borehole technique for rock stress measurement and its applications

Nakayama, T. / Obara, Y. / Sakaguchi, K. et al. | British Library Conference Proceedings | 1993

Rock stress measurement using the compact conical-ended borehole overcoring (CCBO) technique

Ishiguro, Y. / Obara, Y. / Sugawara, K. | British Library Conference Proceedings | 2001

Rock stress measurements by the conical-ended borehole technique using the compact overcoring

Obara, Y. / Sugawara, K. / Sakaguchi, K. et al. | British Library Conference Proceedings | 1995

Development of downward compact conical-ended borehole overcoring technique for rock stress measurement

Sakaguchi, K. / Yoshida, H. / Minami, M. et al. | British Library Conference Proceedings | 2003

Induced stress measurement around a tunnel by the compact conical-ended borehole overcoring (CCBO) technique

Obara, Y. / Sugawara, K. / Ishiguro, Y. et al. | British Library Conference Proceedings | 2003