Study on the Prediction of Debris Flow Risk Using LS-RAPID

In this study, the LS-RAPID program was applied to evaluate debris flow deposition area using field surveyed topographical data in areas of occurrence. 2020, aerial photogrammetry performed an unmanned vehicle Seonseri, Osan-myeon, and Gokseong-gun. The erosion owing were estimated orthographic images generated from high-resolution Digital Surface Mode (DSM), extent accurately estimated. For simulation, program, with apparent friction angle Coulomb's model as important factor, applied. simulation results significantly affected by quality data. It is essential apply DSM for obtaining a highly accurate where damage generally occurs. To performance LSSI index factor applied; it found be 65%, showing superior predictive performance. conclusion, possible predict debris-flow on are required generate reliable disaster map.