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A Methodology to Analyse Landslide and Debris-Flow Hazards Due to Heavy Rainstorms - Application on the Damage Areas around Woomyon Mountain -

  • Crisisonomy
  • Abbr : KRCEM
  • 2013, 9(9), pp.45-66
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general

Oh Kyoung Doo 1,  Lee Chang Hee 2,  강병화 2,  JAE-YEONG HUH 3,  황신범 2

1육군사관학교
2한국방재협회
3대전대학교

Accredited

ABSTRACT

As localized heavy rainstorms due to global climate change occur more frequently along with rapid increase of forest encroachment due to expansion of cities, loss of life and property due to landslides and debris flows also increases gradually. In order to cope with increasing hazard risk scientific and reasonable policies for the prevention of landslide-related disasters are urgently needed; the law concerning landslide-related disasters requires the government to provide hazard maps which may be used for hazard forecast as well as design and construction of hazard mitigation facilities. Even until now, however, not so much research on this subject enough to secure the safety of citizens has been carried out. We proposed a methodology to analyze landslide and debris-flow hazard risks due to heavy rainstorms quantitatively using SINMAP and FLO-2D models. The proposed methodology was applied for the analysis of disastrous damage around Woomyon Mountain in Seoul occurred on July 27th 2011. The hazard maps from this study seem to show fairly good agreement with damage areas. The hazard maps showing not only landslide-prone slopes but also high debris-flow risk areas are expected to be useful for the disaster prevention and mitigation planning to reduce loss of life and property.

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