한국수자원학회논문집 (Journal of Korea Water Resources Association)

  • 제47권12호
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  • Pages.1199-1212
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  • 2014
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  • 2799-8746(pISSN)
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  • 2799-8754(eISSN)
한국수자원학회 (Korea Water Resources Association)
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우기 전후 댐 저수용량에 대한 이변량 빈도해석과 댐의 용수공급능력 평가

Bivariate Frequency Analysis of Dam Storage Capacity before and after the Rainy Season and Evaluation on Water Supply Capacity

  • 전창현 (홍콩과학기술대학교 공과대학 토목환경공학과) ;
  • 유철상 (고려대학교 공과대학 건축사회환경공학부) ;
  • 주국화 (고려대학교 공과대학 건축사회환경공학부) ;
  • 이광만 (K-water연구원)
  • Jun, Changhyun (Department of Civil and Environmental Engineering, School of Engineering, The Hong Kong University of Science and Technology) ;
  • Yoo, Chulsang (School of Civil, Environmental and Architectural Engineering, College of Engineering, Korea University) ;
  • Zhu, Ju Hua (School of Civil, Environmental and Architectural Engineering, College of Engineering, Korea University) ;
  • Lee, Gwang-Man (Korea Institute of Water & Environment, K-water)
  • 투고 : 2014.03.17
  • 심사 : 2014.11.14
  • 발행 : 2014.12.31
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초록

본 연구에서는 댐 저수용량에 대한 이변량 빈도해석을 수행함으로써 재현기간 개념을 이용한 댐의 용수공급능력 평가방법을 제안하였다. 제안된 방법은 대청댐에 적용되어 검토되었다. 추가적으로 국내의 대표적인 가뭄사상에 대한 대청댐의 재현기간을 산정하고, 그결과를검토하였다. 그 결과를 정리하면 다음과 같다. 먼저, 본 연구에서는 이변량 빈도해석을 수행하기 위해 한국의 기후 특성을 반영한 댐의 용수공급능력 평가인자를 고려하였으며 5월 저류량 및 6~10월의 저류량 차이를 대상 변량으로 결정하였다. 둘째, 재현기간의 개념을 이용하여 대청댐의 용수공급능력을 평가한 결과, 대청댐은 재현기간 20년 미만에 대한 용수공급능력을 확보하는 것으로 나타났다. 마지막으로, 본 연구에서 제안된 방법은 한반도에 발생했던 대표적인 가뭄사상들을 분석하고, 해당 사상들에 대한 재현기간을 산정하는데 있어서도 유효함을 확인하였다.

This study proposes an evaluation method of water supply capacity of a dam, which uses the concept of return period by conducting bivariate frequency analysis of dam storage capacity. The proposed method was applied to the Daecheong Dam for the evaluation. Additionally, the return periods of Daecheong Dam were estimated for the representative drought events in Korea, whose results were also reviewed. Summarizing the results is as follows. First, this study evaluated several climatological factors related to the water supply capacity of dams in Korea to conduct the bivariate frequency analysis and selected the storage on May and the storage difference between June and October as variables for analysis. Second, as an evaluation result of the water supply capacity of the Daecheong Dam, it was found that the Daecheong Dam secures the water supply capacity under 20 years of return period. Finally, it was also confirmed that the proposed method in this study is valid to analyze and estimate the return period of representative drought events occurred in the Korean peninsula.

키워드

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