EARTH SLIDE ON GEOMEMBRANE. TECHNICAL NOTE

The authors of this technical note describe inside slope slide failures of a water reservoir following a prolonged period of heavy rainfall. The empty reservoir had just been completed. Sliding took place along the plane of the smooth-surfaced geomembrane high-density polyethylene (HDPE) that was installed 0.4 m below the face of the slope to contain stored water. Gravity forces alone cannot explain the sliding. The combined forces of gravity and seepage forces acting on the surface of the membrane at the time of sliding, under wet conditions, produced a coefficient of friction between the geomembrane and the nonplastic silty sand of the soil cover between 0.325-0.360. Under wet conditions, either of these values agree with previously published coefficients of friction between HDPE geomembrane and sand, or between smooth-surfaced concrete and steel, and plastic silt.

Language

  • English

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: p. 408-411
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00720462
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 30 1996 12:00AM