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수리⋅수문해석 모델을 활용한 농업용수 회귀수량 추정

Estimating the Return Flow of Irrigation Water for Paddies Using Hydrology-Hydraulic Modeling

남원호|신지현|이광야|윤동현|양미헤|정인균
한국농공학회 (The Korean Society Of Agricultural Engineers)|2023.11|한국농공학회논문집 (Journal of the Korean Society of Agricultural Engineers)|제65권 제6호|pp. 1-13

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참고문헌

키워드

Irrigation waterirrigation canal networkwater balance analysisreturn flowEPA-SWMM
주제분류농학

초록

Irrigation return flow plays an important role in river flow forecasting, basin water supply planning, and determining irrigation water use. Therefore,accurate calculation of irrigation return flow rate is essential for the rational use and management of water resources. In this study, EPA-SWMM(Environmental Protection Agency-Storm Water Management Model) modeling was used to analyze the irrigation return flow and return flow rate ofeach intake work using irrigation canal network. As a result of the EPA-SWMM, we tried to estimate the quick return flow and delayed return flowusing the water supply, paddy field, drainage, infiltration, precipitation, and evapotranspiration. We selected 9 districts, including pumping stations andweirs, to reflect various characteristics of irrigation water, focusing on the four major rivers (Hangang, Geumgang, Nakdonggang, Yeongsangang, andSeomjingang). We analyzed the irrigation period from May 1, 2021 to September 10, 2021. As a result of estimating the irrigation return flow rate,it varied from approximately 44 to 56%. In the case of the Gokseong Guseong area with the highest return flow rate, it was estimated that the quickreturn flow was 4,677 103 m3 and the delayed return flow was 1,473 103 m3, with a quick return flow rate of 42.6% and a delayed return flow rateof 13.4%.

Abstract

Irrigation return flow plays an important role in river flow forecasting, basin water supply planning, and determining irrigation water use. Therefore,accurate calculation of irrigation return flow rate is essential for the rational use and management of water resources. In this study, EPA-SWMM(Environmental Protection Agency-Storm Water Management Model) modeling was used to analyze the irrigation return flow and return flow rate ofeach intake work using irrigation canal network. As a result of the EPA-SWMM, we tried to estimate the quick return flow and delayed return flowusing the water supply, paddy field, drainage, infiltration, precipitation, and evapotranspiration. We selected 9 districts, including pumping stations andweirs, to reflect various characteristics of irrigation water, focusing on the four major rivers (Hangang, Geumgang, Nakdonggang, Yeongsangang, andSeomjingang). We analyzed the irrigation period from May 1, 2021 to September 10, 2021. As a result of estimating the irrigation return flow rate,it varied from approximately 44 to 56%. In the case of the Gokseong Guseong area with the highest return flow rate, it was estimated that the quickreturn flow was 4,677 103 m3 and the delayed return flow was 1,473 103 m3, with a quick return flow rate of 42.6% and a delayed return flow rateof 13.4%.

참고문헌 (36)

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