Abstract
The scale of mountain disasters and the frequency of their occurrence are increasing due to climate change and land development. The country of 64% is composed of mountainous areas and most of the rainfall is concentrated in summer, making Korea vulnerable to mountain disasters. In particular, as the frequency of landslides and debris flow increases, countermeasures to reduce the mountain disasters are required. In this study, we simulated the debris flow based on the investigation on site where debris flows occurred and evaluated the vulnerability of the facilities that actually damaged. The simulation result coincided with an accuracy of about 62% for the area damaged by the actual debris flow. The impact forces about 2.0 to 24.8 kPa were generated in the section where the actual damage occurred. In addition, the vulnerability was found to be higher than 0.6.
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