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2024 Vol.57, Issue 4 Preview Page

Research Article

A study for flood control method of Sumjingang Dam considering dam operation constraints

댐 운영 제약사항을 고려한 섬진강댐 홍수조절방식에 관한 연구

Yongtaek Leea
,
Kwansue Jungb*
이 용택a
,
정 관수b*
aMaster's Course, Program in Civil Engineering, Department of Civil Engineering, Chungnam National University, Daejeon, Korea
bProfessor, Department of Civil Engineering, Chungnam National University, Daejeon, Korea
a충남대학교 토목공학과 석사과정
b충남대학교 토목공학과 교수
*Corresponding Author
30 April 2024. pp. 249-261
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Abstract

Climate change has intensified the severity of extreme floods, presenting substantial challenges to dam management and operation. Traditionally, flood control strategies for dam operations have been based on theoretical scenarios, such as designed floods, without taking into account downstream conditions. However, in practice, managing floods involves operating dams based on climate forecasts. This strategy encounters challenges due to the limited predictability of climate forecasts, which in turn leads to uncertainty in decision- making among dam managers. This study proposes a flood control approach for dam operations that involves gradually increasing the outflow, considering the operational constraints and potential downstream damage, based on inflow data. The effectiveness of this method was assessed through simulation, employing both a designed flood and data from the most significant historical flood. The dam operation strategy for flood control presented in this study provides a framework for dam operators, facilitating consistent decision- making in flood management by integrating realistic dam operational conditions.

Keywords
Dam operation in flood season
flood control method
simulation of dam operation
Dam operation constraints

최근 기후변화로 인해 극한홍수가 증가하여 댐 운영에 큰 어려움으로 작용하고 있다. 그간 댐 설계 시 제시되는 홍수조절방식은 하류 상황에 대한 고려 없이 계획홍수량이라는 특정 홍수상황을 가정하여 수립된 것으로, 실제 상황에는 기상예보를 기반으로 저수지 모의운영을 통해 홍수조절을 실시한다. 하지만 기상예보의 불확실성과 댐 관리자마다 달라지는 의사결정 등 한계가 존재한다. 따라서 본 연구에서는 섬진강댐에 대해 댐 유입량을 기준으로 댐 운영 제약사항을 고려한 단계적 방류량 증량을 실시하는 홍수조절방식을 제시하고, 계획홍수량 및 역대 최대홍수사상을 적용한 저수지 모의운영을 통해 효과를 평가하였다. 본 연구에서 제시한 홍수조절방식은 다양한 댐 운영자가 현실적 댐 운영 여건을 반영하여 일관성 있는 홍수조절 의사결정에 활용 가능할 것으로 판단된다.

키워드
홍수기 댐 운영
홍수조절방식
저수지 모의운영
댐 운영 제약사항
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 57
  • No :4
  • Pages :249-261
  • Received Date : 2024-03-05
  • Revised Date : 2024-03-22
  • Accepted Date : 2024-03-22
  • DOI :https://doi.org/10.3741/JKWRA.2024.57.4.249
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