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Evaluation of Liquefaction Potential of Anderson Ranch Dam

by John W. France, Geotechnical Engineers Inc, Englewood, CO, USA,
DeWayne A. Campbell, Geotechnical Engineers Inc, Englewood, CO, USA,
Steve J. Poulos, Geotechnical Engineers Inc, Englewood, CO, USA,



Document Type: Proceeding Paper

Part of: Waterpower '85

Abstract:

This paper contains a description of a liquefaction evaluation of the alluvial foundation soils at Anderson Ranch Dam, which was performed as part of the USBR's program of safety evaluation of existing dams. The dam is a 330-ft high zoned earthfill structure. The study included standard penetration test (SPT) borings, undisturbed sample borings and laboratory testing. The SPT values indicated that some of the alluvial soils may be susceptible to liquefaction. However, a comparison of undrained steady-state strengths determined from tests on the undisturbed samples and driving shear stresses calculated from stability analyses demonstrated that liquefaction of the alluvial foundation soils is unlikely.

Subject Headings: Soil liquefaction | Penetration tests | Dam foundations | Soil analysis | Laboratory tests | Soil strength | Embankment dams

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