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http://dx.doi.org/10.21729/ksds.2022.15.3.15

The Experimental Study for Variance of Depositation Due to Sediment Volume Concentration of Debris Flow  

Choi, Youngdo (School of Civil Engineering, Chungbuk National University)
Kim, Sungduk (Division of Human&Environmental Design, Cheongju University)
Lee, Hojin (School of Civil Engineering, Chungbuk National University)
Publication Information
Journal of Korean Society of Disaster and Security / v.15, no.3, 2022 , pp. 15-21 More about this Journal
Abstract
The purpose of this study is to investigate the sedimentation area and runout distance in the downstream when debris flow occurred on a mountain slope through an experimental performance. Super typhoons and torrential rains caused by climate change cause large-scale debris flow disasters in the downstream areas of mountainous areas, mainly where sediments are deposited and flowed downstream. To analyze the characteristics of the sediment deposited downstream, the disposition area and runout distance were investigated through experiments in the case of a straight channel and channel with berm, respectively. As experimental conditions, changes in sediment volume concentration and channel slope, and channel with or without berm, reduction rates in sedimentation area and runout distance were investigated. In the straight channel, the steeper the channel slope and the lower the sedimentation concentration, the sedimentation area and runout distnace were increased. In a channel with berm, the runout distance and sediment area increased as the slope became steeper and the sediment area decreased.
Keywords
Climate change; Super typhoon; Berm; Deposition area; Runout distance;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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