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대규모 농업용저수지 수혜면적 변화에 따른 효율적 용수재분배 모의
성무홍 ( Sung Muhong ),정민혁 ( Jeung Minhyuk ),범진아 ( Beom Jina ),박태선 ( Park Taesun ),이재남 ( Lee Jaenam ),정형모 ( Jung Hyoungmo ),김영주 ( Kim Youngjoo ),유승환 ( Yoo Seunghwan ),윤광식 ( Yoon Kwangsik ) 한국농공학회 2021 한국농공학회논문집 Vol.63 No.3
Optimal water management is to efficiently and equally supply an appropriate amount of water by using irrigation facilities. Therefore, it is necessary to evaluate water supply capacity through distribution simulation between the designed distribution rate and re-distributed rate according to the changed farming conditions. In this study, we recalculated the agricultural water supply amount of Geumcheon main canal, which beneficiary area was reduced due to the development of Gwangju-Jeonnam innovation city, and we constructed a canal network using the SWMM model to simulate the change in supply rate of each main canal according to the re-distributed rate. Even though the supply amount of the Geumcheon main canal was reduced from 1.20 m3/s to 0.90 m3/s, it showed a similar supply rate to the current, and the reduced quantity could be supplied to the rest of the main canal. As a result, the arrival time at the ends of all main canal, except for the Geumcheon main canal, decreased from 1 to 3 hours, and the supply rate increased from 4 to 17.0% at the main canal located at the end of the beneficiary area of Naju reservoir.
대규모 농업용저수지의 농업용수 공급 운영 관리에 따른 이수안전도 평가
정민혁(Jeung,Minhyuk),범진아(Beom,Jina),성무홍(Sung,Mu-hong),이재남(Lee,Jaenam),유승환(Yoo,Seung-hwan),윤광식(Yoon,Kwang-sik) 한국방재학회 2021 한국방재학회논문집 Vol.21 No.1
최근 기후변화로 인하여 가뭄이 빈번하게 발생하고 이에 따른 농업용수 부족을 겪고 있다. 하지만 대부분 농업용 저수지는 10년 빈도 한발시의 공급량을 기준으로 설계되어 있어;최근 연속적인 가뭄으로 낮은 저수율을 나타나고 있다. 따라서 본 연구에서는 가뭄에 대응할 수 있는 최저 관리 저수율을 설정하기 위해 나주호를 대상으로 물수지 분석을 수행하고 평년 운영 관리에 따른 부족수량 변화를 평가하고자 한다. 그 결과;평년 운영 관리 저수율이 높아질수록 영농기 초기 저수율이 증가하였고;연평균 농업용수 부족수량이 감소하였다. 또한;평년 저수율 관리에 따라 가뭄 년도 햇수와 그 심도를 저감 시킬 수 있는 것으로 나타났다. Due to recent climate change;droughts occur frequently;thereby causing a shortage of agricultural water. However;supplies to most agricultural reservoirs have been designed assuming that droughts occur at a frequency of 10 years. Therefore;continuous drought has led to low storage rates. Thus;in this study;a water balance analysis was performed on the Naju reservoir;and the changes in the water shortage according to the minimum storage rate restriction management to cope with drought were evaluated. As a result;a higher management storage rate level results in a higher initial storage rate in the next year;thereby decreasing the annual average shortage. In addition;it shows that a decrease in the frequency of drought and its intensity can be reduced according to the minimum storage management during wet years.
회복탄력성을 고려한 기상 시나리오별 가뭄 용수 공급방안: 나주호를 중심으로
박진현 ( Park Jinhyun ),고재한 ( Go Jeahan ),조영준 ( Jo Youngjun ),정경훈 ( Jung Kyunghun ),성무홍 ( Sung Muhong ),정형모 ( Jung Hyoungmo ),박현규 ( Park Hyunkyu ),유승환 ( Yoo Seunghwan ),윤광식 ( Yoon Kwangsik ) 한국농공학회 2018 한국농공학회논문집 Vol.60 No.5
Resilience has been widely used in various fields including design and operation of infrastructures. The resilient infrastructures not only reduce the damage scale of various disasters but also reduce the time and cost required for restoration. However, resilience rarely applied to promote efficient management of agricultural infrastructures. Recently, drought is an aggravating disaster by climate change and need countermeasures. Therefore, we tried to demonstrate evaluating measures in case of drought under consideration of resilience. This study applied the robustness-cost index (RCI) to evaluate alternative solution of the supply problem of a large agricultural reservoir under drought conditions. Four structural alternatives were selected to estimate the robustness index (RI) and the cost index (CI) to obtain the RCI values. Structural alternatives are classified into temporary measures and permanent measures. Temporary measures include the development of a tube wells and the installation of the portable pump, while the permanent measures include the installation of a pumping stations and the pumping water to the reservoir (Yeongsan River-Naju reservoir). RCI values were higher in permanent measures than those of temporary measures. Initial storage of the reservoir also affected RCI values of the drought measures. Permanent measures installation and management of early stage of the reservoir storage shortage was identified as the most resilient system.