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http://dx.doi.org/10.7843/kgs.2019.35.4.5

Quantification on Dam Condition Related to Internal Erosion of an Embankment Dam and its Applicability Evaluation  

Heo, Gun (Rural Research Institute, Korea Rural Community Cooperation)
Chung, Choong-Ki (Dept. of Civil and Environmental Engrg., Seoul National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.35, no.4, 2019 , pp. 5-14 More about this Journal
Abstract
The typical four conditions related to internal erosion were set from the results of the regular dam safety inspection for 17,500 dams, and a questionnaire survey was conducted for dam safety experts to quantify these four typical current dam conditions with scores between 0 and 10, respectively. In addition, we proposed 'possible score range' for each condition to minimize the decision limits for dam managers to quantify dam conditions while helping to quantify various dam conditions except 4 representative conditions. A case study based on 'quantified score' and 'possible score range' for each condition showed that this method consistently reflects the dangerousness of the dam and provides a reasonable probability of failure. This helps to overcome limitations of dam rating determination by weighted average, and it will help to evaluate dangerous dams as dangerous dams.
Keywords
Internal erosion; Dam current condition; Quantification; Questionnaire survey;
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