Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Analysis of Problems of Water Supply Capacity Determination in Water Resources Systems

수자원시스템의 용수공급량 결정방법의 문제점 분석

  • Lee, Gwang-Man (Korea Institute of Water & Environment, Kwater) ;
  • Yi, Jaeeung (Department of Civil Engineering, Ajou University)
  • Received : 2014.02.10
  • Accepted : 2014.03.03
  • Published : 2014.04.30
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Abstract

In water resources planning, to decide proper water supply capacity is a very important task. Once water supply system such as a dam is decided, it will affect whole range of water resources circumstances for a long time. Even though systematic approaches have been implemented since 1980, many problems are still prevail in reality. Especially some issues related to the reliability analysis method used in planning dams in Korea have been persistently brought up. This study is to diagnose problems on the reliability criterion in water supply capacity assessment of water resources systems and discuss a valid method. As a result, the estimates by the different analysis time intervals, in case of the temporal reliability, show no large difference, but there is a large difference when assessment time intervals are differently applied. The volumetric reliability accounts for 2~3% higher than that of the temporal reliability, and resiliency and vulnerability also show large differences by the analysis time intervals.

수자원 계획에 있어 적정 용수공급량(계획공급량)을 결정하는 것은 매우 중요한 문제이다. 댐과 같은 중요 수자원시설물의 경우 한번 계획이 결정되면 이후 수십년간 국가 수자원 환경 전반에 영향을 미치게 된다. 실제 1980년대 이후, 보다 체계화된 수자원 계획이 시행되었음에도 여러 가지 문제점들이 내포되어 있는 것으로 지적되고 있다. 특히 대부분의 댐에 적용되어온 신뢰도 지표의 분석방법이나 기준에 대한 문제점이 지속적으로 제기되고 있다. 본 연구는 수자원시스템의 용수공급량 결정방법의 신뢰도 지표 문제점을 진단하고 적정 적용방안을 제시하고자 하였다. 분석결과, 기간신뢰도의 경우 분석시간단위에 따른 차이는 크지 않았으며, 분석시간단위와 평가단위시간을 달리할 경우 큰 차이를 보였다. 양적신뢰도는 기간신뢰도보다 2~3% 큰 값을 보이며, 회복도와 취약도 역시 분석시간단위에 따라 차이를 보였다.

Keywords

References

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