KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Application of New Version of Flood Frequency Analysis (Bulletin 17C)

미국의 새로운 홍수빈도해석 가이드라인(Bulletin 17C)의 적용

  • Lee, Taesam (Gyungsang National University) ;
  • England, John F. (Institute for Water Resources Risk Management Center) ;
  • Son, Chanyoung (Hydrometeorological Cooperation Center)
  • 이태삼 (경상대학교 공학연구원 토목공학과) ;
  • ;
  • 손찬영 (수문기상협력센터 연구개발팀)
  • Received : 2016.11.25
  • Accepted : 2017.01.04
  • Published : 2017.02.01
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Abstract

Accurate flood frequency and magnitude estimation has a critical role in flood risk management and damage reduction. In United States, Log Pearson Type-III (LP-III) distribution with method of moments for parameter estimation has been uniformly and consistently employed in estimating design floods. After the first version of flood frequency guidelines (Bulletin 15) was published in 1967, the revised version Bulletin 17B has been employed since 1982 up to now. A new version of flood frequency guidelines, Bulletin 17C, is prepared and about to come out soon. In the current study, we analyzed the new features of the upcoming Bulletin 17C and presented case studies applying its new features. From the presented results, we see what critical components in the new design flood frequency guideline we could learn.

정확한 홍수빈도와 강도의 추정은 홍수위험관리 및 피해감소에 중요한 역할을 담당하고 있다. 미국에서는 설계수문량 산정을 위한 Log Pearson Type-III (LP-III)와 매개변수 추정을 위한 모멘트법을 일괄적으로 적용해오고 있다. 1965년 홍수빈도해석 가이드라인인 Bulletin 15가 처음으로 만들어진 이후 이를 개량해 나아가 현재에는 Bulletin 17B가 가이드라인으로 사용되고 있다. 최근에 Bulletin 17C가 기존 가이드라인의 부족한 부분을 보완하고 새로운 방법들을 흡수하여 거의 완료상태에 있고 곧 출시될 예정이다. 본 연구에서는 새로이 보완된 Bulletin 17C에 대한 중요사항들을 분석하고 이를 적용하여 보았다. 분석결과들로부터 우리나라 설계홍수량 산정방법 및 절차의 개선방안에 대하여 고찰하였다.

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References

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