Liquefaction Potential of Gravelly Soils in Dams

by Mark D. Evans, Northeastern Univ, Boston, United States,
Leslie F. Harder, Jr., Northeastern Univ, Boston, United States,



Document Type: Proceeding Paper

Part of: Geotechnical Practice in Dam Rehabilitation

Abstract:

Gravelly soils are common components of embankment dams and their foundations. When such soils have been placed or deposited in a loose condition and are saturated, they are potentially liquefiable. In recent years, several large embankment dams have been reevaluated to assess the liquefaction potential of gravelly soil zones within the dam foundation. In this paper, the authors present their experiences in assessing the liquefaction potential of gravelly soils using both laboratory and in situ techniques. These techniques are: large-scale cyclic triaxial testing with correction for membrane compliance and Becker Penetration Testing. The results from several investigations will be summarized and compared to approaches and results obtained for investigations targeting sandy soil.

Subject Headings: Soil liquefaction | Penetration tests | Sandy soils | Embankment dams | Dam foundations | Soil-structure interaction | Triaxial tests

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