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http://dx.doi.org/10.15683/kosdi.2020.09.30.586

Development on Prediction Algorithm of Sediment Discharge by Debris Flow for Decision of Location and Scale of the Check Dam  

Kim, Kidae (Department of Forest Disaster Management, National Institute of Forest Science)
Woo, Choongshik (Department of Forest Disaster Management, National Institute of Forest Science)
Lee, Changwoo (Department of Forest Disaster Management, National Institute of Forest Science)
Seo, Junpyo (Department of Forest Disaster Management, National Institute of Forest Science)
Kang, Minjeng (Department of Forest Disaster Management, National Institute of Forest Science)
Publication Information
Journal of the Society of Disaster Information / v.16, no.3, 2020 , pp. 586-593 More about this Journal
Abstract
Purpose: This study aims to develop an algorithm for predicting sediment discharge by debris flow, and develop GIS-based decision support system for optimal arrangement of check dam. Method: The average stream width and flow length were used to predict the cumulative sediment discharge by debris flow. At this time, the amount of slope failure on source area and average flow length were utilized as input factors. Result: The predicted sediment discharge calculated through the algorithm was 1.1 times different on average compared to the actual sediment discharge by debris flow. In addition, the program is an objective indicator that selects the location and size of the check dam, and it can help practitioners make rational decisions. Conclusion: The soil erosion control works are being implemented every year. Therefore, it is expected that the GIS-based decision support system for location and size of the check dam will contribute to the prevention of sediment-related disasters.
Keywords
Debris Flow; Sediment Discharge; Check Dam; Optimal Arrangement;
Citations & Related Records
Times Cited By KSCI : 10  (Citation Analysis)
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