Behavior of discontinuties during excavation of two large underground caverns

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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)3B 16 1-6
JournalInternational Journal of Rock Mechanics and Mining Sciences
Volume41
Issue numberSUPPL. 1
DOIs
Publication statusPublished - May 1 2004
Externally publishedYes

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Keywords

  • BTV
  • Cavern
  • Deformation
  • Discontinuity
  • Excavation
  • Stress redistribution

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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