ブロック理論による不連続性岩盤掘削時の安定性評価について

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書誌事項

タイトル別名
  • EVALUATION OF STABILITY OF EXCAVATED JOINTED ROCK MASS BY BLOCK THEORY
  • ブロック リロン ニ ヨル フレンゾクセイ ガンバン クッサクジ ノ アンテイ

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抄録

A number of analytical tools are available for engineering calculations involving excavations. These include numerical methods, physical model techniques and limit equilibrium analysis. Block theory is new and it uses the stereographic projection. It can be applied to analyze the three dimensional system of joints and other rock discontinuities to find the critical blocks of the rock mass when excavated along defined surfaces. This paper describes the way to find key blocks in the systems of joint networks and to support them by bolting or other suppoting methods. For a severly jointed rock mass, an idea of a key block existing space which contains all key blocks in the excavated rock surface is proposed and it is used for determining the optimum support forces which stabilize such jointed rock mass.

収録刊行物

  • 土木学会論文集

    土木学会論文集 1985 (364), 209-218, 1985-12-20

    公益社団法人 土木学会

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