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Study on the kaiser effect of rock-like materials under triaxial compression

Research Project

Project/Area Number 04650443
Research Category

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

Allocation TypeSingle-year Grants
Research Field 基礎・土質工学
Research InstitutionNihon University

Principal Investigator

TANO Hisataka  Nihon University, College of Engg., Dept. of Civil Engg., Professor, 工学部, 教授 (00059700)

Co-Investigator(Kenkyū-buntansha) WATANABE Hidehiko  Nihon University, College of Engg., Dept, of Civil Engg., Research Assistant, 工学部, 助手 (40175112)
Project Period (FY) 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1992: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsRock-like materials / Triaxial compression / Acoustic emission / Kaiser effect / Earth pressure / Tuff / Pre-loading / Re-loading
Research Abstract

The aim of this project is to compare the Kaiser effect of rock-like materials using triaxial compression test wit husing uniaxial compression test for the specimens pre-loaded under triaxial compression. Triaxial compression tests of Ogino Tuff were carried out under constant strain ratio and the AE activities were measured. Two AE sensors were put the inside of the upper and lower loading plates respectively. Three series of the experiments is as follows ; (1) Observation of the AE activities of rocks under Hydrostatic pressure. (2) The Kaiser effect under triaxial compression. (3) Estimation of the previous stress using uniaxial compression test by the small size specimens(PHI30X60mm) which were made of a large size specimen(PHI100mmX200mm) per-loaded under triaxial compression. These small size specimens were drilled to the three directions, that is, parallel, direct and 45 degree to the axis of the large size specimen.
The experimental results and concluding remarks are as follows : (1) The Kaiser effects under hydrostatic pressure(25,50 kgf/cm^2) were observed at each stress level. (2) The accuracy of the estimated previous triaxial stress value using triaxial compressive pre-loading is better than the uniaxial one. Especially, the Kaiser effect of small specimen drilled to the direction of the maximum shear stress is not still satisfactory. (3) From the above results (2), if one the principal stress axis coincides with the speciemn axis, the accuracy of the estimated previous stress using the Kaiser effect on uniaxial compression test is satisfactory to a certain degree.

Report

(2 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 渡辺 英彦,田野 久貴,赤津 武男: "AEによる三軸圧縮を受けた岩石の履歴応力推定" 日本応用地質学会東北支部第2回研究発表会講演論文集. 11-14 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 渡辺 英彦,田野 久貴,赤津 武男: "静水圧を受けた岩石のカイザー効果に関する基礎実験" 土木学会東北支部技術研究発表会講演概要. 372-373 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 田坂 寛,田野 久貴,赤津 武男: "岩石のひずみレベルによるAE発生頻度に関する実験" 土木学会東北支部技術研究発表会講演概要. 376-377 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Hidehiko WATANABE, Hisataka TANO: "Takeo Akazu : Estimation of the previous stress of rocks pre-loaded under triaxial compression using the Kaiser effect" Proc. of the 2nd Tohoku branch's Conference on Engg. Geology, the Japanese Society of Engg. Geology. 11-14 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Hidehiko WATANABE, Hisataka TANO, Takeo Akazu: "Fundamental study on the Kaiser effect of a pre-loaded rock specimen under triaxial compression" Proc.of the Tohoku branch's Conference. JSCE. 372-373 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Hiroshi TASAKA, Hisataka TANO, Takeo AKAZU: "Experimental study on the relation between AE activity distribution of rocks and the strain levels" Proc.of the Tohoku branch's Conference. JSCE. 376-377 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 渡辺 英彦 , 田野 久貴, 赤津 武男: "AEによる三軸圧縮を受けた岩石の履歴応力推定" 日本応用地質学会東北支部第2回研究発表会講演論文集. 11-14 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 渡辺 英彦 , 田野 久貴 , 赤津 武男: "静水圧を受けた岩石のカイザー効果に関する基礎実験" 土木学会東北支部技術研究発表会 講演概要. 372-373 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 田坂 寛 , 田野 久貴 , 赤津 武男: "岩石のひずみレベルによるAE発生頻度に関する実験" 土木学会東北支部技術研究発表会 講演概要. 376-377 (1993)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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