DETERMINATION OF THE MODULUS OF RIGIDITY OF ROCK BY EXPANDING A CYLINDRICAL PRESSURE CELL IN A DRILLHOLE

THE MODULUS OF RIGIDITY OF ROCK CAN BE DETERMINED BY A FAIRLY SIMPLE PROCEDURE IN WHICH A CYLINDRICAL PRESSURE CELL IS FIRST CALIBRATED BY EXPANDING IT INSIDE 2 METAL TEST CYLINDERS AND THEN IS EXPANDED INSIDE A DRILLHOLE IN ROCK. THE 2 TEST CYLINDERS HAVE DIFFERENT EXPANSION CHARACTERISTICS /DIFFERENT MATERIAL AND/OR DIFFERENT WALL THICKNESS/, WHICH MAKE POSSIBLE THE DETERMINATION OF 2 CALIBRATION CONSTANTS. CHANGE OF DIAMETER OF THE PRESSURE CELL IS DETERMINED FROM THE VOLUME OF FLUID PUMPED INTO IT. THE ESSENTIAL APPARATUS CONSISTS OF A CYLINDRICAL PRESSURE CELL, A BOURDON PRESSURE GAGE, A VOLUME-METERING FLUID PUMP, AND 2 TEST CYLINDERS. SOME ADVANTAGES OF THE METHOD ARE THAT A ROCK SAMPLE IS NOT REQUIRED, A DIAMOND DRILL IS NOT REQUIRED, AND THE ROCK IS TESTED IN PLACE. /AUTHOR/

  • Supplemental Notes:
    • pp 427-449, 8 FIG, 4 TAB, 8 REF
  • Corporate Authors:

    Rock Mechanics Symposium

    ,    
  • Authors:
    • Panek, L A
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00228920
  • Record Type: Publication
  • Source Agency: Geoscience Abstracts
  • Files: TRIS
  • Created Date: Aug 15 2004 2:10AM