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/
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Supplemental Notes:
- Vol 93, No SM5, PTI, PROC PAPER 5456 PP 1-49, 21 FIG, 3 TAB,
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Authors:
- Bjerrum, L
- Publication Date: 1967-9
Media Info
Subject/Index Terms
- TRT Terms: Bonds; Clay; Energy; Failure; Landslides; Overconsolidation; Shale; Slope stability; Slopes; Soil mechanics; Strain (Mechanics); Surfaces; Weathering
- Old TRIS Terms: Progressive failure; Slides (Earth); Strains
- Subject Areas: Energy; Geotechnology; Highways;
Filing Info
- Accession Number: 00234238
- Record Type: Publication
- Files: TRIS
- Created Date: Feb 13 1994 12:00AM