Behavior of discontinuties during excavation of two large underground caverns

T. Yoshida; Y. Ohnishi; S. Nishiyama; Y. Hirakawa; S. Mori

doi:10.1016/j.ijrmms.2004.03.149

Behavior of discontinuties during excavation of two large underground caverns

T. Yoshida, Y. Ohnishi, S. Nishiyama, Y. Hirakawa, S. Mori

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

BTV (Borehole Television) observations were carried out during excavation of two large underground caverns to investigate the behavior of the discontinuities. Throughout the observations, Behavior such as opening of cracks, cracking of veins and generation of cracks were estimated in detail. In two power stations, initial properties of discontinuities were very different, which brought distinct difference in the behavior of discontinuities. Through BTV observations, correlation between initial properties and behavior of discontinuities is discussed. With monitoring data of rock displacement and stress, also discussed are correlation between behavior of discontinuities and characteristics of stress and displacement of the rock mass.

Original language	English
Pages (from-to)	3B 16 1-6
Journal	International Journal of Rock Mechanics and Mining Sciences
Volume	41
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.ijrmms.2004.03.149
Publication status	Published - May 1 2004
Externally published	Yes

Keywords

BTV
Cavern
Deformation
Discontinuity
Excavation
Stress redistribution

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology

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T1 - Behavior of discontinuties during excavation of two large underground caverns

AU - Yoshida, T.

AU - Ohnishi, Y.

AU - Nishiyama, S.

AU - Hirakawa, Y.

AU - Mori, S.

PY - 2004/5/1

Y1 - 2004/5/1

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AB - BTV (Borehole Television) observations were carried out during excavation of two large underground caverns to investigate the behavior of the discontinuities. Throughout the observations, Behavior such as opening of cracks, cracking of veins and generation of cracks were estimated in detail. In two power stations, initial properties of discontinuities were very different, which brought distinct difference in the behavior of discontinuities. Through BTV observations, correlation between initial properties and behavior of discontinuities is discussed. With monitoring data of rock displacement and stress, also discussed are correlation between behavior of discontinuities and characteristics of stress and displacement of the rock mass.

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KW - Deformation

KW - Discontinuity

KW - Excavation

KW - Stress redistribution

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