SWMM 모형을 이용한 농업용 저수지 용수분배 모의 및 관개효율 평가
Assessment of Water Distribution and Irrigation Efficiency in Agricultural Reservoirs using SWMM Model
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초록
The management of agricultural water can be divided into management of agricultural infrastructure and operation to determine the timing and quantityof water supply. The target of water management is classified as water-supply facilities, such as reservoirs, irrigation water supply, sluice gate control,and farmland. In the case of agricultural drought, there is a need for water supply capacity in reservoirs and for drought assessment in paddy fieldsthat receive water from reservoirs. Therefore, it is necessary to analyze the water supply amount from intake capacity to irrigation canal network. Theanalysis of the irrigation canal network should be considered for efficient operation and planning concerning optimized irrigation and water allocation. In this study, we applied a hydraulic analysis model for agricultural irrigation networks by adding the functions of irrigation canal network analysisusing the SWMM (Storm Water Management Model) module and actual irrigation water supply log data from May to August during 2015-2019 yearsin Sinsong reservoir. The irrigation satisfaction of ponding depth in paddy fields was analyzed through the ratio of the number of days the targetponding depth was reached for each fields. This hydraulic model can assist with accurate irrigation scheduling based on its simulation results. The resultsof evaluating the irrigation efficiency of water supply can be used for efficient water distribution and management during the drought events.
Abstract
The management of agricultural water can be divided into management of agricultural infrastructure and operation to determine the timing and quantityof water supply. The target of water management is classified as water-supply facilities, such as reservoirs, irrigation water supply, sluice gate control,and farmland. In the case of agricultural drought, there is a need for water supply capacity in reservoirs and for drought assessment in paddy fieldsthat receive water from reservoirs. Therefore, it is necessary to analyze the water supply amount from intake capacity to irrigation canal network. Theanalysis of the irrigation canal network should be considered for efficient operation and planning concerning optimized irrigation and water allocation. In this study, we applied a hydraulic analysis model for agricultural irrigation networks by adding the functions of irrigation canal network analysisusing the SWMM (Storm Water Management Model) module and actual irrigation water supply log data from May to August during 2015-2019 yearsin Sinsong reservoir. The irrigation satisfaction of ponding depth in paddy fields was analyzed through the ratio of the number of days the targetponding depth was reached for each fields. This hydraulic model can assist with accurate irrigation scheduling based on its simulation results. The resultsof evaluating the irrigation efficiency of water supply can be used for efficient water distribution and management during the drought events.
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