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http://dx.doi.org/10.3741/JKWRA.2015.48.2.115

Prediction of a Debris Flow Flooding Caused by Probable Maximum Precipitation  

Kim, Yeon-Joong (Water Resource System Division, CTI Engineering Co., Ltd.)
Yoon, Jung-Sung (Dept. of Civil and Urban Eng., Inje University)
Kohji, Tanaka (Water Resource System Division, CTI Engineering Co., Ltd.)
Hur, Dong-Soo (Dept. Ocean Civil Eng., Gyeongsang National University)
Publication Information
Journal of Korea Water Resources Association / v.48, no.2, 2015 , pp. 115-126 More about this Journal
Abstract
In recent years, debris flow disaster has occurred in multiple locations between high and low mountainous areas simultaneously with a flooding disaster in urban areas caused by heavy and torrential rainfall due to the changing global climate and environment. As a result, these disasters frequently lead to large-scale destruction of infrastructures or individual properties and cause psychological harm or human death. In order to mitigate these disasters more effectively, it is necessary to investigate what causes the damage with an integrated model of both disasters at once. The objectives of this study are to analyze the mechanism of debris flow for real basin, to determine the PMP and run-off discharge due to the DAD analysis, and to estimate the influence range of debris flow for fan area according to the scenario. To analyse the characteristics of debris flow at the real basin, the parameters such as the deposition pattern, deposit thickness, approaching velocity, occurrence of sediment volume and travel length are estimated from DAD analysis. As a results, the peak time precipitation is estimated by 135 mm/hr as torrential rainfall and maximum total amount of rainfall is estimated by 544 mm as typhoon related rainfall.
Keywords
debris flow; numerical simulation; DAD analysis; PMP (probable maximum precipitation);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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