THE EFFECT OF INCLINED PLANAR FABRIC FEATURES ON THE BEHAVIOR OF A LOADED ROCK MASS

THE SOURCES OF STRESS-DEFORMATION ANISOTROPY IN ROCKS AND ROCK MASS ARE DISCUSSED AND STRONG CORRELATIONS ARE SHOWN TO EXIST WITH THE ANISOTROPIES IN ASSOCIATED ROCK FABRIC FEATURES. THE ORTHORHOMBIC ELASTIC MATERIAL IS USED AS A THEORETICAL MODEL SINCE IT CAN REPRESENT BOTH AN ANISOTROPIC HOMOGENEOUS ROCK MASS AS WELL AS THE MORE COMMON CASE OF A ROCK MASS CONSISTING OF A SYSTEM OF PARALLEL LAYERS HAVING DIFFERENT THICKNESSES AND PROPERTIES. THE PROBLEM CONSIDERED IS THAT OF A ROCK MASS LOADED ON ITS HORIZONTAL SURFACE BY A LONG LOAD OF UNIFORM WIDTH AND PRESSURE, AND HAVING THE DIRECTIONS OF THE SYMMETRIES IN ITS FABRIC PATTERN INCLINED TO THE HORIZONTAL. THIS IS REPRESENTED THEORETICALLY BY A LOADED HALF-PLANE IN WHICH THE DIRECTION OF THE MAXIMUM MODULUS IS SIMILARLY INCLINED. THE ANALYSIS IS BASED ON THE FINITE ELEMENT METHOD USING A SIMPLE TRIANGULATED MESH. THE RESULTS SHOW THE MARKED EFFECT OF THE INCLINED ANISOTROPY AS REFLECTED BY CHANGING PATTERNS IN THE MAGNITUDE AND ORIENTATION OF THE PRINCIPAL STRESSES AND THE TOTAL DISPLACEMENTS.

  • Supplemental Notes:
    • Vol 1, No 2-20, PP 415-422, 6 FIG, 23 REF
  • Authors:
    • Gerrard, C M
    • Harrison, W J
  • Publication Date: 1970

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Filing Info

  • Accession Number: 00236103
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 11 1972 12:00AM