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http://dx.doi.org/10.7848/ksgpc.2011.29.5.535

The Estimation of Debris Flow Behaviors in Injae Landslide Area  

Kim, Gi-Hong (강릉원주대학교 공과대학 토목공학과)
Hwang, Jae-Seon (강릉원주대학교 공과대학 토목공학과)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.29, no.5, 2011 , pp. 535-541 More about this Journal
Abstract
A debris flow is caused by torrential rain in mountainous regions and carries mixture of fragmental matter from slope failure, deposit soils from a valley floor and a large amount of water. It seriously damages facilities, houses, and human lives in its path. We tried to apply debris flow behavior estimation model developed in foreign country to domestic case. The study area is Inje-county, Gangwon-do and aerial photos and GPS surveying were used to collect information of starting and end point of the landslide and debris flow. The analysis showed that L/H for forecasting the travel distances of debris flows has the mean of 4.93 and standard deviation of 0.98. This model tended to overestimate the scale and extent of debris flows. In Inje-county's case, a debris flow is caused by multiple simultaneous small-scale landslide. This is quite different from the foreign cases in which a large-scale landslide cause a large-scale debris flow. Thus, an empirical model suitable for domestic conditions needs to be developed.
Keywords
landslide; debris flow; aerial photo; GIS;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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