Using the Quantitative Risk Assessment for Selecting the Flood Defense Level According to Floodplain Development Conditions (하천의 홍수방어목표 적정화를 위한 정량적 위험도 평가 적용: 하천 배후지역 이용현황에 따른 설계빈도 차등화를 중심으로)

Jongso Lee (이종소); Lee Sangeun (이상은); Song, Chang-Geun (송창근); Eun Taek Shin (신은택)

doi:10.15793/kspr.2021.108..003

Using the Quantitative Risk Assessment for Selecting the Flood Defense Level According to Floodplain Development Conditions

The Korea Spatial Planning Review
2021, 108(), pp.37-48
DOI : 10.15793/kspr.2021.108..003
Publisher : 국토연구원
Research Area :
Received : January 20, 2021
Accepted : March 8, 2021
Published : March 31, 2021

Jongso Lee ¹, Lee Sangeun ¹, Song, Chang-Geun ², Eun Taek Shin ³

¹국토연구원
²인천대학교
³인천대학교 안전공학과

Accredited

ABSTRACT

In Korea, the flood defense level has been typically determined by the classification of river grade. Each river interval should, in principle, have different level necessary to consider the flood risk behind the river, which however is not currently applied in planning the river due to the lack of scientific methods. Therefore, to develop a reasonable method for zoning the flood defense levels of river intervals, the methodology of the QRA (Quantitative Risk Assessment) originated from the reliability engineering was introduced to a river interval with highly urbanized area. First, the authors presented the FN curve showing the numbers of fatalities at various flood frequency conditions. Then, they evaluated the adequacy of flood risk comparing with the societal risk tolerance criteria for the river basin. Finally, they adjusted the flood defense level according to the distributions of population, land use, and buildings in riparian and checked whether it satisfied the risk criteria or not.

KEYWORDS

Flood Risk Management, Flood Defense Level, Quantitative Risk Assessment, Societal Risk, FN-curve

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* References for papers published after 2023 are currently being built.

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The Korea Spatial Planning Review 2023 KCI Impact Factor : 1.2

Using the Quantitative Risk Assessment for Selecting the Flood Defense Level According to Floodplain Development Conditions

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* References for papers published after 2023 are currently being built.

The Korea Spatial Planning Review 2023 KCI Impact Factor : 1.2

Using the Quantitative Risk Assessment for Selecting the Flood Defense Level According to Floodplain Development Conditions

ABSTRACT

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