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http://dx.doi.org/10.7843/kgs.2020.36.5.5

A Study on Management Criteria of Seepage for Fill Dams Considering Rainfall Effect  

Lee, Jongeun (Dept. of Civil Engrg., Gyeongsang National Univ.)
Yoon, Sukmin (Engrg. Research Institute, Gyeongsang National Univ.)
Im, Eun-Sang (Water Energy&Infrastructure Research Center, K-water)
Kang, Gichun (Dept. of Civil Engrg., Gyeongsang National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.36, no.5, 2020 , pp. 5-16 More about this Journal
Abstract
The purpose of this study is to suggest the management criteria through the decision tree analysis for a seepage, which is an important instrumentation type of the fill dam. In the case of the seepage of the dam in Korea, seepage can be increased rapidly because rainfall directly flow into the downstream slope and abutment of dam during rainfalls. Therefore, it is necessary the management criteria for the seepage of the fill dam in consideration of rainfall. In this study, decision tree analysis was performed for a fill dam in Korea by setting the seepage as the response variable and the rainfall and water level of dam as explanatory variables. As the study results, the water level acted as an explanatory variable from the conditions under daily rainfall of 34.75 mm/day, and the branch conditions of the water level were analyzed to be 37.4 m and 35.23 m. 98% of the rainfall data is distributed under the conditions of the daily rainfall of 34.75 mm/day, and coverage of the seepage is indicated from 13.25 L/min to 24.24 L/min. When the rainfall and water level as the influence factors for the seepage were selected, the influence of the rainfall was dominant. Finally, the seepage of fill dam by considering the rainfall and water level was suggested as a management criteria.
Keywords
Decision tree analysis; Fill dam; Seepage; Rainfall; Water level;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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