Application of hemispherical-ended borehole technique to hot rock

Yuzo Obara, Katsuhiko Sugawara, Kiyotoshi Sakaguchi, Yoichi Mizuochi

Research output: Contribution to conferencePaperpeer-review

3 Citations (Scopus)

Abstract

The hemispherical-ended borehole technique is improved for the field stress measurement in a hot rock. It is shown how the original rock stress is determined independently of the thermal stress. A new spherical strain cell of 17 elements is developed for the in-situ measurements. From its successful application at Hishikari gold mine of rock temperature between 50°C and 80°C, it is clarified that the present method can be used effectively in a homogeneous rock mass.

Original languageEnglish
Pages587-590
Number of pages4
Publication statusPublished - 1991 Jan 1
Externally publishedYes
Event7th International Society for Rock Mechanics and Rock Engineering Congress 1991 - Aachen, Germany
Duration: 1991 Sep 161991 Sep 20

Other

Other7th International Society for Rock Mechanics and Rock Engineering Congress 1991
CountryGermany
CityAachen
Period91/9/1691/9/20

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

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