• KCID journal
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• v.9 no.2
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• pp.87-93
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• 2002

• Water for future
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• v.44 no.11
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• pp.45-49
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• 2011

• Water for future
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• v.53 no.2
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• pp.58-64
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• 2020

• Journal of the Korean Professional Engineers Association
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• v.6 no.24
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• pp.12-16
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• 1973

• Proceedings of the Korea Water Resources Association Conference
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• 2003.05b
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• pp.795-798
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• 2003

• Proceedings of the Korea Water Resources Association Conference
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• 2003.05b
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• pp.895-898
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• 2003

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.3
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• pp.1-9
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• 2020

Acritical function of a nation is to protect its people's lives and properties from natural disasters such as a drought. A drought affects many aspects of human life, including social, economic, and industrial activities. Approximately 75.7% of reservoirs in Korea are over 50 years old.Sedimentation over the years may have caused a situation where storage capacity of the reservoirs is no longer sufficient and compliant with the original reservoir specifications. This study analyzes storage capacities for ten aged reservoirs using the autonomous navigation USV. It compares these capacities with sediment estimated by conventional empirical equations. Comparisons were made to the original specifications for the reservoirs.Storage capacity of six reservoirs decreased in a range between 16.2%-55.3% and storage capacity of 4 reservoirs increased in a range between 1.5%-380.2%. This data was compared to data derived from estimating sediment by empirical equations. Yoon's equation(1982) appeared more accurate than Sur's equation(1988) in Uhlinzi and Yongpo reservoirs, and Sur's equation(1988), however, appeared more accurate than Yoon's equation in Daegok, Ugok2 and Ochi reservoirs. The significant ranges of sedimentation shown in this study suggest that it is worth continuously surveying reservoirs to ensure their efficient management and operation.

• Proceedings of the Korea Water Resources Association Conference
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• 1994.02a
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• pp.87-93
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• 1994

• Journal of Korea Water Resources Association
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• v.31 no.1
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• pp.95-103
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• 1998

Dam sediment can be predicted from the two methods: the one is a physical analysis based on the hydrjulic mechanism and the other is an empirical approach using observed data as a design factor. The former can be used to estimate short-term phenomena by mathematical methods. the latter can be used for deriving long-term design parameters such as dead storage calculation. Monthly reservoir operation is possible with the sluicing efficiency curve based on empirical data. The optimal sediment management can be carried out using the information variable which traces deposit sediments corresponding to the reservoir storage. The idea can provide an optimal operation strategy to save effective storage varying with time. This study presents a methodology for the long-term sediment prediction using sluicing efficiency curve. An application is conducted for estimating accumulated sedment deposit and water supply capability ofr the Fenhe dam in the Yellow rever of China.

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.724-728
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• 2010

강우강도의 증가와 식생대의 변화 등 기후변화로 인한 저수지내 대형탁수와 조류대발생으로 사회적 문제가 야기되고 있다. 이에 유역대책 평가와 저수지내 유체거동 및 영향평가를 위한 수단 확보가 절실한 상황이다. 본 연구에서는 국내 저수지에 대한 3차원 수리해석기술의 적용성을 검토하고자 하였다. 이를 위해 낙동강의 주요지류 중 하나인 남강에 위치한 남강댐에 대해 미 EPA의 오염총량지원도구인 EFDC 모델을 적용하였다. 저수지내 퇴사량 조사시 측정된 실측치와의 지형 재현성 검토, 실측수위와 모의결과의 비교를 그래프와 통계지표를 활용하여 실시하였고 염료 추적 모의를 통해 도달시간 등을 산정하였다.