Internal Stress Analysis of Homogenized Joints-Homogenized Crack Propagation in Rock (2nd Report)-

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Other Title
  • 均質化節理の内部応力解析―岩盤内の均質化亀裂進展（第２報）―
  • キンシツカ セツリ ノ ナイブ オウリョク カイセキ ガンバン ナイ ノ キンシツカ キレツ シンテン ダイ2ホウ
  • Homogenized Crack Propagation in Rock (2nd Report)
  • 岩盤内の均質化亀裂進展（第2報）

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Description

The Stress Compensation-Displacement Discontinuity Method (SC-DDM) is improved to precisely analyze the internal stresses of homogenized compressible joints, and interdependent effects of them are discussed by analyzing the joint-tip fracture upon the maximum circumferential stress criterion. A relative joint compressibility ratio is proposed to represent the compressibility of the joint. The internal stresses are represented by a central joint stress coefficient and a joint stress function, and they are formulated as a function of elastic and in-elastic displacements in the joint, which are represented by a set of central displacement coefficients and joint displacement functions. The analysis is carried out by taking an overall slide on the joint surface into consideration. Additionally comparing the compressible solution to the in-compressible one, it is discussed that the joint compressibility plays an important role to determine the critical pressure of the joint-tip fracture, along with the joint spacing.

Journal

  • Shigen-to-Sozai

    Shigen-to-Sozai 122 (10/11), 473-482, 2006

    The Mining and Materials Processing Institute of Japan

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