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http://dx.doi.org/10.5389/KSAE.2019.61.4.087

General Inundation Modeling of Paddy Field Districts Considering Drainage Delay  

Jun, Sang Min (Department of Rural Systems Engineering, Seoul National University)
Lee, Hyun Ji (Department of Rural Systems Engineering, Seoul National University)
Hwang, Soon Ho (Department of Rural Systems Engineering, Seoul National University)
Song, Jung-Hun (Department of Agricultural and Biological Engineering & Tropical Research and Education Center, University of Florida)
Choi, Soon-Kun (Climate Change and Agroecology Division, National Institute of Agricultural Sciences)
Kang, Moon Seong (Department of Rural Systems Engineering, Research Institute for Agriculture and Life Sciences, Institute of Green Bio Science and Technology, Seoul National University)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.61, no.4, 2019 , pp. 87-96 More about this Journal
Abstract
The objective of this study was to develop a general inundation modeling technique considering the effect of drainage delay in the paddy field districts. In most studies, farmland inundation simulations have been conducted using previously developed watershed models. However, the water cycle in the paddy fields has a different structure from that of the general watershed, and the effect of the drainage delay should be considered. In this study, the drainage delay algorithm was developed using water balance equation, and the inundation modeling was performed for inundation-prone paddy fields located near Doowol stream. As a result, the depth of inundation was 43.1 cm and 45.2 cm, respectively, due to the 100-year and 200-year frequency rainfall. With the operation of drainage pump ($0.1m^3/s$), inundation depths decreased by 5.8 cm and 6.0 cm, respectively, and inundation time reduced by 20 hours and 21 hours, respectively for the 100-year and 200-year frequency rainfall. The result showed that the general inundation modeling technique developed in this study could reflect the effect of drainage delay due to the rise of external water level and the flooding reduction effect by operation of drainage pump. The results of this study are expected to be useful to establish measures for damage caused by farmland inundation.
Keywords
Drainage delay; inundation modeling; paddy field districts;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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