지수평가기법을 적용한 태풍 산바의 낙동강 유역에 미친 피해특성 분석 = Analysis of the Characteristics of Flood Damage Caused by Typhoon “SANBA” using Index Assessment Method in Nakdong-River

다국어 초록 (Multilingual Abstract)

The uncertainty of major floods caused by torrential downpours and frequency of typhoon occurrence has been dramatically increased. Especially the frequency and the damage of localized rainfall are becoming unpredictable because of meteorological change and other factors, but most of the measures are the type of recover after-the-fact. This reveals the limitation to seek and designate the potential damage area and to concentrate budget and resources so the active measures are needed to execute in practice. For those reasons the definitions of flood damage factors from analysis of hydro-hydraulic-mophic characteristics could be used practically as the basis for decision-making in flood damage management. In this study, the characteristics of flood-damaged areas caused by typhoon “SANBA”are analysed using the investigation report of the past flood damage records, and the usability is proposed as a pre-process for local and specific assessment. Also the flowchart which consists of damage report-hydrologic modelling-hydraulic modelling-characteristics analysis-definition of risk area and the need to establishment of system are proposed.

국문 초록 (Abstract)

최근 집중 호우 및 태풍 등의 대규모 호우사상에 대한 불확실성이 증가하는 추세이며, 기후변화와 같은 기상학적 요인 외에도 예측하기 힘든 국부적 호우로 인해 대규모 홍수의 발생빈도와 사회적 손실이 높아지고 있지만 현재까지의 홍수관리방안은 사후복구 형태의 피해관리방안이 대부분이다. 이러한 대응방안은 잠재위험지역 색출 및 자원과 예산 집중을 위한 합리적 대처에 한계점을 나타내고 있으며, 사전예방적 홍수관리방안을 통한 능동적 대처가 필요하다. 이에 수문수리지형학적 특성분석을 통한 홍수위험요인의 파악은 관리방안 수립시 의사결정을 지원할 수 있는 기초자료로써 활용될 수 있다. 본 연구에서는 실제 태풍 “산바”로 인한 피해조사 결과를 바탕으로 피해지점과 관련한 인자들의 특성을 분석하고 이를 바탕으로 국부적 상세피해원인 규명을 위한 전 단계로써의 지수평가기법의 활용성을 제시하였다. 또한 향후 사전대응적 홍수관리대책 수립시 의사결정 지원을 위해 피해지점조사-수문모형구축-수리모형구축-특성분석-위험지점 선정으로 이어지는 연구흐름을 제안하여 시스템 구축의 필요성 및 기초자료를 제시하고자 하였다.

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