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http://dx.doi.org/10.21729/ksds.2022.15.2.37

A Study on the Application of FLO-2D Model for Analysis of Debris Flow Damage Area  

Jo, Hang-Il (Graduate School of Disaster Prevention, Kangwon National University)
Jun, Kye-Won (Graduate School of Disaster Prevention, Kangwon National University)
Publication Information
Journal of Korean Society of Disaster and Security / v.15, no.2, 2022 , pp. 37-44 More about this Journal
Abstract
As the frequency of torrential rains and typhoons increases due to climate change, the frequency of occurrence of debris flow is also increasing. In particular, in the case of Kangwon-do, the occurrence of damage caused by mountain disasters is increasing as it has a topographical characteristic where the mountains and the coast are in contact. In order to analyze the flow characteristics in the sedimentary part of the debris flow, input data were constructed through numerical maps and field data, and a two-dimensional model, FLO-2D, was simulated. The damaged area was divided into the inflow part of the debris flow, the village center, and the vicinity of the port, and the flow center and flow velocity of the debris flow were simulated and compared with field survey data. As a result, the maximum flow depth was found to be 2.4 m at the debris flow inlet, 2.7 m at the center of the village, and 1.4 m at the port adjacent to the port so the results were similar when compared to the field survey. And in the case of the maximum flow velocity, it was calculated as 3.6 m/s at the debris flow inlet, 4.9 m/s in the center of the village and 1.2 m/s in the vicinity of the port, so It was confirmed that the maximum flow center occurred in the section where the maximum flow rate appeared.
Keywords
Debris flow; FLO-2D; Flow depth; Flow velocity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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