설계강우의 지속시간 및 시간분포에 따른 배수개선 농경지 침수 영향 분석
Effects of Duration and Time Distribution of Probability Rainfall on Paddy Fields Inundation
1
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
The objective of this study was to analyze the effect of the duration and time distribution of probability rainfall on farmland inundation for the paddyfields in the drainage improvement project site. In this study, eight drainage improvement project sites were selected for inundation modeling. Hourlyrainfall data were collected, and 20- and 30-year frequency probability rainfalls were estimated for 14 different durations. Probability rainfalls weredistributed using Intensity-Duration-Frequency (IDF) and Huff time distribution methods. Design floods were calculated for 48 hr and critical duration,and IDF time distribution and Huff time distribution were used for 48 hr duration and critical duration, respectively. Inundation modeling was carriedout for each study district using 48 hr and critical duration rainfalls. The result showed that six of the eight districts had a larger flood discharge usingthe method of applying critical duration and Huff distribution. The results of inundation depth analysis showed similar trends to those of design floodcalculations. However, the inundation durations showed different tendencies from the inundation depth. The IDF time distribution is a distribution inwhich most of the rainfall is concentrated at the beginning of rainfall, and the theoretical background is unclear. It is considered desirable to applycritical duration and Huff time distribution to agricultural production infrastructure design standards in consideration of uniformity with other designstandards such as flood calculation standard guidelines.
Abstract
The objective of this study was to analyze the effect of the duration and time distribution of probability rainfall on farmland inundation for the paddyfields in the drainage improvement project site. In this study, eight drainage improvement project sites were selected for inundation modeling. Hourlyrainfall data were collected, and 20- and 30-year frequency probability rainfalls were estimated for 14 different durations. Probability rainfalls weredistributed using Intensity-Duration-Frequency (IDF) and Huff time distribution methods. Design floods were calculated for 48 hr and critical duration,and IDF time distribution and Huff time distribution were used for 48 hr duration and critical duration, respectively. Inundation modeling was carriedout for each study district using 48 hr and critical duration rainfalls. The result showed that six of the eight districts had a larger flood discharge usingthe method of applying critical duration and Huff distribution. The results of inundation depth analysis showed similar trends to those of design floodcalculations. However, the inundation durations showed different tendencies from the inundation depth. The IDF time distribution is a distribution inwhich most of the rainfall is concentrated at the beginning of rainfall, and the theoretical background is unclear. It is considered desirable to applycritical duration and Huff time distribution to agricultural production infrastructure design standards in consideration of uniformity with other designstandards such as flood calculation standard guidelines.
참고문헌 (13)
- F. A. Huff, "Time distribution of rainfall in heavy storms", Water Resources Research, 3(4), pp.1007~1019 (1967), American Geophysical Union (AGU)[DOI]
- Hwang, D. J., "Affecting discharge of flood water in paddy field from selecting rainfall with fixed and unfixed duration", Journal of Korean National Committee on Irrigation and Drainage, 19(1), pp.64~76 (2012)
- Jeong, J. H., "Investigation and complementary measures establishment for flood on tidal reclaimed paddy fields", Journal of Korean National Committee on Irrigation and Drainage, 17(2), pp.105~114 (2010)
- 전상민, "배수지연을 고려한 논 지구의 범용 침수 모의 기법 개발", 한국농공학회논문집, 61(4), pp.87~96 (2019), 한국농공학회[DOI]
- 전상민, "HEC-RAS를 이용한 하천변 농경지의 1, 2차원 연계 침수 모의", 한국농공학회논문집, 60(5), pp.135~147 (2018), 한국농공학회[DOI]
- 전상민, "CMIP5 및 CMIP6 GCM 기반 무한천 유역 농경지 미래 침수 위험도 분석", 한국농공학회논문집, 62(6), pp.131~142 (2020), 한국농공학회[DOI]
- 김학관, "HEC-HMS와 HEC-RAS를 이용한 농촌 저지대 침수해석", 한국농공학회논문집, 54(2), pp.1~6 (2012), 한국농공학회[DOI]
- Development of integrated management system for agricultural infrastructure-focused on reservoir embankment-, "Lee", Ministry of Agriculture, Food and Rural Affairs, ~ (2014)
- Lee, H. J., "Estimation of farmland inundation probability based on temporal distribution of forecastedrainfall", Ms, pp.2019
- Ministry of Agriculture, Food and Rural Affairs, "Design standard for infrastructure of agricultural production" (2018), Ministry of Agriculture, Food and Rural Affairs
- Ministry of Environment, "Standard guidelines for calculating flood volume", Ministry of Environment, ~ (2019)
- Ministry of the Interior and Safety, "Disaster yearbook 2019. Ministry of the Interior and Safety", ~ (2019)
- 류정훈, "강우의 비정상성을 고려한 청미천 유역의 미래 침수특성 분석", 한국농공학회논문집, 59(1), pp.81~96 (2017), 한국농공학회