PORE PRESSURE CHANGES AND THE DELAYED FAILURE OF CUTTING SLOPES IN OVERSATURATED CLAY

Failure of slopes cut in overconsolidated clay may be delayed by the rate of equilibration of pore pressure after excavation. Other mechanisms, such as decrease in drained strength with time, have been suggested as reasons for delayed failure. Previous studies of cutting slopes in the London clay have suggested that equilibration of pore pressure is relatively rapid and that other mechanisms control eventual failure. Recent observations of pore pressure in a cut slope nine years after excavation suggest that equilibration of pore pressure may be the principal mechanism controlling delayed failure in the London clay. The studies made of failures in London clay slopes have played a significant part in the general study of long-term failure of cut slopes in clay, so this conclusion has some general implication. (A) (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00168505
• Authors:
  • VAUGHAN, P R
  • Walbancke, H J
• Publication Date: 1973-12

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 531-539
• Serial:
  • GEOTECHNIQUE
  • Volume: 23
  • Issue Number: 4
  • Publisher: Thomas Telford Limited
  • ISSN: 0016-8505

Subject/Index Terms

• TRT Terms: Clay; Clay soils; Consolidations; Equilibrium (Mechanics); Failure; Grading (Earthwork); Pore pressure; Pore water pressures; Saturated soils; Slope stability; Strength of materials; Time
• Old TRIS Terms: Slope (Earthworks)
• Subject Areas: Geotechnology; Highways; I51: Earthworks and Soil Drainage;

Filing Info

• Accession Number: 00323400
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Jun 12 1981 12:00AM