Estimation of three-dimensional stress distribution and elastic moduli in rock mass of the Tono area

Nara, Yoshitaka*; Cho, S. H.*; Yoshizaki, Takaya*; Kaneko, Katsuhiko*; Sato, Toshinori* ; Nakama, Shigeo ; Matsui, Hiroya

This study presents a back analysis based on three-dimensional finite element analysis in order to estimate the regional stress fields and the elastic moduli of a rock mass simultaneously from in situ measurements. In order to improve the accuracy of the estimation of three-dimensional stress field, heterogeneities in a rock mass consisting of geological layers with different elastic properties was considered. Back analysis was applied to determine the regional stresses for a broad field study that includes Tono Mine, the Shobasama Site and the Mizunami Underground Research Laboratory (MIU) Construction Site.

Language	:	English
Journal	:	International Journal of the JCRM (Internet)
Volume	:	7
Number	:	1
Pages	:	p.1 - 9
Publication Year/Month	:	2011/01
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Keywords	:	no keyword
Research Facility	:	超深地層研究所
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Cooperating Institute	:	資源・素材学会

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Registration No. : AA20100406
JAEA Abstracts No. : 39000345
Paper Submission No. : 8576

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