Graham Lake Dam Remedial Measures Projectby Adam N. Jones, Northrop, Devine & Tarbell, Inc, Portland, United States,
R. Craig Findlay, Northrop, Devine & Tarbell, Inc, Portland, United States,
Abstract: Graham Lake Dam consists of a 550-foot long earth embankment and an 80-foot long concrete spillway. Several concerns were identified during project inspections including limited spillway capacity, seepage at the toe of the embankment, stability problems associated with low shear strength of the clay foundation and the potential for liquefaction of the loose embankment fill. This paper discusses the evaluation, development and design of a comprehensive remedial measures program undertaken to address these concerns.
Subject Headings: Soil strength | Soil liquefaction | Embankment dams | Spillways | Shear strength | Soil analysis | Soil-structure interaction | Lakes
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