THE DETERMINATION OF JOINT POPULATIONS AND THEIR SIGNIFICANCE FOR TUNNEL STABILITY

STRENGTH, PERMEABILITY AND DEFORMATIONAL PROPERTIES OF A ROCK MASS ARE INFLUENCED AND OFTEN CONTROLLED BY THE GEOLOGICAL DISCONTINUITIES WITHIN THE MASS. THESE PROPERTIES ARE OFTEN DETERMINED BY PHYSICAL TESTS CONDUCTED WITHIN AND ON PORTIONS OF THE ROCK MASS UNDER CONSIDERATION. ANY EXTRAPOLATION OF THESE TEST RESULTS TO OTHER PORTIONS OF THE ROCK MASS ASSUMES THAT A SIMILAR PATTERN OF DISCONTINUITIES, HAVING SIMILAR PROPERTIES, EXISTS THROUGHOUT THE REGION OF EXTRAPOLATION. A SURVEY IN WHICH VARIOUS JOINT PROPERTIES OF INTEREST ARE MEASURED MAY BE CONDUCTED TO SAMPLE THE JOINT POPULATION OF THE MASS. SUITABLE DATA MANIPULATION AND HANDLING TECHNIQUES ARE DEVELOPED TO PERMIT THE DEFINITION OF THE JOINT POPULATION OF THE ROCK MASS. THE VALIDITY OF THE EXTRAPOLATION OF TEST RESULTS MAY THEN BE ASSESSED. /RRL(A)/

  • Supplemental Notes:
    • pp 71-76, 6 FIG, 8 REF
  • Corporate Authors:

    South African Tunnelling Conf

    ,    
  • Authors:
    • Magg-robertson, A
    • Piteau, D R
  • Publication Date: 1970-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00235154
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Report/Paper Numbers: pp 81-84
  • Files: TRIS
  • Created Date: Aug 29 1971 12:00AM