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Runoff Analysis of Debris-Flow according to the Install of Reduction Facility

  • Crisisonomy
  • Abbr : KRCEM
  • 2013, 9(3), pp.17-26
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general

Kye-Won Jun 1 Jun Byong Hee 1 Chang Deok Jang 1

1강원대학교

Accredited

ABSTRACT

It is difficult to predict the time of occurrence and location of debris flow disaster among sediment disasters due to heavy rainfalls, so it is an area that needs studies on the introduction of reduction facilities that can prevent it. The massive landslide and debris flow disaster that occurred in Gangwon-do in 2006 and the debris flow disasters that occurred in the whole area of Mt. Umyeon in Seocho-gu Seoul and the whole area of Cheonjeon-ri in Chuncheon-si in July 2011 can be said to be the incidents that show this clearly. This study predicted the volume of debris flow by whether reduction facilities (debris barriers) were installed for the research area in which a real-scale experiment was carried out and analyzed the reduction efficiency of the debris flow reduction facilities. For the prediction of the debris flow volume, an 1-dimensional numerical model analysis was used, which could simulate erosion and deposition. As a result of the analysis of the debris flow volume dividing the flow section of the debris flow into up-stream, down-stream and outlet, it was analyzed that installing reduction facilities had a reduction efficiency of approximately 27% for the stream-flow.

Citation status

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