STRESS-DEFORMATION AND STABILITY ANALYSIS OF DEEP BOREHOLES

THE PROBLEM OF STRESS-DEFORMATION AND STABILITY ANALYSES OF DEEP BOREHOLES DRILLED IN A ROCK MASS, SUBJECTED TO GEOSTATIC LOADING OR FLUID PRESSURES, IS CONSIDERED IN THIS STUDY. AVAILABLE ANALYTICAL SOLUTIONS FOR THIS PROBLEM ARE BASED ON MANY SIMPLIFIED ASSUMPTIONS, AND ARE GENERALLY INADEQUATE FOR FIELD CONDITIONS. NUMERICAL SOLUTIONS ARE OBTAINED HERE BY EMPLOYING THE FINITE ELEMENT METHOD. THE METHOD CAN TAKE INTO ACCOUNT COMPLEX BOUNDARY CONDITIONS, ARBITRARY VARIATIONS IN MATERIAL PROPERTIES AND NONLINEAR STRESS-STRAIN BEHAVIOR. THE PROBLEM OF A BOREHOLE SUBJECTED TO HYDROSTATIC PRESSURES IS STUDIED AND THE RESULTS FROM THE FINITE ELEMENT METHOD ARE COMPARED WITH EXPERIMENTAL RESULTS FROM TESTS CONDUCTED ON PHOTOELASTIC MODELS MADE FROM EPOXY RESIN. VERY GOOD AGREEMENT IS OBTAINED BETWEEN THE TWO RESULTS. THE FINITE ELEMENT METHOD IS FURTHER APPLIED TO STUDY THE STABILITY OF A BOREHOLE DRILLED PROGRESSIVELY IN A GREEN RIVER SHALE.

  • Supplemental Notes:
    • Vol 2, No 4-13, PP 475-484, 9 FIG, 15 REF
  • Authors:
    • Desai, C S
    • Reese, L C
  • Publication Date: 1970

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Filing Info

  • Accession Number: 00236200
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 22 1972 12:00AM