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Experimental Study on Shear mechanism of Rock Discontinuities

Research Project

Project/Area Number 02452227
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 資源開発工学
Research InstitutionKyoto University

Principal Investigator

TERADA Makoto  Kyoto Univ. Fac. of Eng. Prof., 工学部, 教授 (40025862)

Co-Investigator(Kenkyū-buntansha) YANAGIDANI Takashi  Kyoto Univ. Fac. of Eng. Instructor, 工学部, 助手 (00259128)
MATSUMOTO Yoshio  Kyoto Univ. Fac. of Eng. Instructor, 工学部, 助手 (00026022)
SAITO Toshiaki  Kyoto Univ. Fac. of Eng. Assoc. Prof., 工学部, 助教授 (90056151)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1991: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1990: ¥2,500,000 (Direct Cost: ¥2,500,000)
KeywordsRock discontinuities / Shear strength / Discontinuous rock / Roughness of surface
Research Abstract

Main results obtained in this project are following.
1. It is observed that the surface roughness of discontinuities in the higher frequency region, than the defined one depend on the normal stress, are fractured, after the shear test of rock discontinuities under the condition of the constant normal stress.
2. Progressing the shear displacement, the fracture of the surface roughness of rock discontinuities occurs in the high frequency components, and develops to the lower components. But the climb over the toughness occurs at the limit frequency depend on the normal stress.
3. The shear strength at a certain displacement, depends on the strength of the roughness components, in which fracture is occurring mainly. In the case that the climb over the roughness occurs, the shear strength is kept constant. This corresponds to the residual strength.
4. The fracture of the surface roughness does not occur, until the peak shear strength appears. At the peak strength, the fracture develops at once to the some extent of higher frequency roughness.
5. The normal dilatation accompanied with the shear displacement, also depends on the roughness components in which fracture is occurring mainly, or the limit frequency of the climb over roughness.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] 斎藤 敏明: "岩盤不連続面の表面形状特性がせん断強度に及ぼす影響について" 第8回岩の力学国内シンポジウム講演論文集. 97-102 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] SAITO, Toshiaki: "Roughness of Rock Discontinuities and Their Shear Behavior" Poc. of 8th Japan Sympo. on Rock mechanics. 97-102 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 斎藤 敏明: "岩盤不連続面の表面形状特性がせん断強度に及ぼす影響" 第8回岩の力学国内シンポジウム講演論文集. 97-102 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2021-12-14  

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