THE ROLE OF PORGRESSIVE FAILURE IN CLAY SLOPES

MODES OF TIME-DEPENDENT WEAKENING IN CLAY SLOPES ARE DISCUSSED, AND EVIDENCE IS QUOTED TO SHOW THAT THE DOMINANT PRE-SLIP MECHANISM OF TIME-DEPENDENT WEAKENING IS A DECAY IN COHESION. THAT IS, PROGRESSIVE FAILURE WILL BE AN UNTYPICAL OCCURRENCE FOR THE MAJORITY OF CLAY SLOPES. MENTION IS THEN MADE OF EXISTING HYPOTHESES OF PROGRESSIVE FAILURE, WHICH ARE SUGGESTED TO PROVIDE AN INADEQUATE EXPLANATION OF THE PROCESS WHEN IT DOES OCCUR. IT IS SHOWN HOW LARGE DEFORMATIONS, POSSIBLY OF THE ORDER OF FEET, ARE NECESSRY IN THE FIELD TO PRODUCE RESIDUAL CONDITIONS ALONG A POTENTIAL SLIP PLANE. NEGLECTING LANDSLIDES, DEFORMATIONS CAN GENERALLY BE SATISFIED ONLY UNDER A CERTAIN SET OF CONDITIONS. THE COMMON CONDITIONS WHICH MEET THE REQUIREMENTS ARE NON-HOMOGENEOUS OR LOCALIZED STRAINING ASSOCIATED WITH THE NON-HOMOGENEOUS SWELLING OF SOILS PRESENT IN A CUTTING OR VALLEY SLOPE. EXAMPLES ARE GIVEN IN SUPPORT OF THIS HYPOTHESIS. /AUTHOR/

  • Authors:
    • James, P M
  • Publication Date: 0

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Filing Info

  • Accession Number: 00237067
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: Nov 18 1973 12:00AM