PROGRESSIVE FAILURE IN SLOPES OF OVERCONSOLIDATED PLASTIC CLAY AND CLAY SHALES

ALL EVIDENCE INDICATES THAT SLIDES IN SLOPES OF OVERCONSOLIDATED CLAYS AND CLAY SHALES ARE PRECEDED BY THE DEVELOPMENT OF A CONTINUOUS SLIDING SURFACE BY PROGRESSIVE FAILURE. REQUISITE CONDITIONS FOR PROGRESSIVE FAILURE ARE DISCUSSED AND IT IS PROPOSED THAT A PROGRESSIVE FAILURE MAY RESULT FROM A LARGE CONTENT OF RECOVERABLE STRAIN ENERGY OF THE CLAY RESULTING FROM ITS GEOLOGICAL HISTORY. IN CLAYS WITH WEAK DIAGENETIC BONDS THE STRAIN ENERGY IS IMMEDIATELY RECOVERED UPON A REDUCTION IN LOAD. IN CLAY SHALES DIAGENETIC BONDS WERE FORMED WHEN THE CLAY CARRIED ITS MAXIMUM CONSOLIDATION PRESSURE, WITH THE RESULT THAT THE RECOVERABLE STRAIN ENERGY IS LOCKED-IN AND WILL ONLY BE LIBERATED WHEN THE BONDS ARE GRADUALLY DESTROYED BY WEATHERING NEAR THE SURFACE. /ASCE/

  • Supplemental Notes:
    • Vol 93, No SM5, PTI, PROC PAPER 5456 PP 1-49, 21 FIG, 3 TAB,
  • Authors:
    • Bjerrum, L
  • Publication Date: 1967-9

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  • Accession Number: 00234238
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 13 1994 12:00AM