@inproceedings{b8ca67a31cac43bcb33715f1a7b8182f,
title = "A study on evaluation of initial rock stress in anisotropic rock mass using over-coring method",
abstract = "As the initial rock stress measurement technique for design of large-scale underground cavern, the Compact Conical-ended Borehole Over-coring (CCBO) technique is increasing application performance. The stress calculation model of conventional CCBO technique is based on linear elastic model. Therefore, there is a possibility of obtaining a different value compared with the true initial stress in the anisotropic rock condition. The objective of the work is to establish an initial rock stress measurement method which can be applied to anisotropic rock mass. Especially in this study, the subject is focused on frequently used anisotropic elastic rock model, the transversely isotropic model, which has one plane of transverse isotropy and one axis of rotational symmetry orthogonal to the plane. As the first step of this study, this ordinary theory of the CCBO technique is modified so as to deal with the anisotropy problems. Authors tried the application of the anisotropy theory in black schist which anisotropy is well developed, and compare with the results of isotropy model analysis in this paper.",
keywords = "Anisotropic rock, Initial rock stress, Isotropy, Schist, The ccbo technique, Underground cavern",
author = "T. Mori and M. Nakajima and Kiyotoshi Sakaguchi and S. Aoki and T. Kaji and K. Nagai and K. Sasaki",
year = "2014",
month = jan,
day = "1",
language = "English",
series = "ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014",
publisher = "International Society for Rock Mechanics",
pages = "2095--2103",
editor = "Kaneko and Kodama and Shimizu",
booktitle = "ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014",
note = "8th Asian Rock Mechanics Symposium, ARMS 2014 ; Conference date: 14-10-2014 Through 16-10-2014",
}