HEC-HMS와 HEC-RAS를 이용한 농촌 저지대 침수해석
Flood Inundation Analysis in a Low-lying Rural Area using HEC-HMS and HEC-RAS
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조회
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다운로드
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인용
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참고문헌
키워드
초록
The objective of this study is to analyze the flood inundation in a low-lying rural area. The study watershed selected for this study includes the Il-Pae and Ahn-Gok watersheds. It is located in the Namyangju, Korea and encompasses 3.64 km2. A major flood event that occurred in July 2011 was chosen as the case for the flood inundation analysis. The Hydrologic Engineering Center’s Hydrologic Modeling System (HEC-HMS) and River Analysis System (HEC-RAS) were used to simulate flood runoff and water surface elevation at each cross-section, respectively. The watershed topographic, soil, and land use data were processed using the GIS (Geographic Information System) tool for the models. The contribution to the total flood volume was estimated based on the results simulated by HEC-HMS and HEC-RAS. The results showed that the overflow discharge from the Il-Pae stream constituted 80% of the total flood volume. The contributions of rainfall falling directly on the inundation area and overflow discharge from the Ahn-Gok stream were 15 % and 5 %, respectively. The simulation results in different levee scenarios for the Ahn-Gok stream were also compared. The results indicated that the levee could reduce the flood volume a little bit.
Abstract
The objective of this study is to analyze the flood inundation in a low-lying rural area. The study watershed selected for this study includes the Il-Pae and Ahn-Gok watersheds. It is located in the Namyangju, Korea and encompasses 3.64 km2. A major flood event that occurred in July 2011 was chosen as the case for the flood inundation analysis. The Hydrologic Engineering Center’s Hydrologic Modeling System (HEC-HMS) and River Analysis System (HEC-RAS) were used to simulate flood runoff and water surface elevation at each cross-section, respectively. The watershed topographic, soil, and land use data were processed using the GIS (Geographic Information System) tool for the models. The contribution to the total flood volume was estimated based on the results simulated by HEC-HMS and HEC-RAS. The results showed that the overflow discharge from the Il-Pae stream constituted 80% of the total flood volume. The contributions of rainfall falling directly on the inundation area and overflow discharge from the Ahn-Gok stream were 15 % and 5 %, respectively. The simulation results in different levee scenarios for the Ahn-Gok stream were also compared. The results indicated that the levee could reduce the flood volume a little bit.
참고문헌 (11)
- 안상진, "홍수피해로 인한 침수면적 산정에 관한 사례연구", 대한토목학회 논문집B, 23(3B), pp.183~189 (2003), 대한토목학회
- Baumann C. A., "Utilizing interfacing tools for GIS, HEC‐GeoHMS, HEC‐GeoRAS, and ArcHydro", In Proc. World Environmental and Water Resources Congress 2011. Palm Springs, CA: ASCE (2011)
- Gibson, S. A., "Modeling watershed and riverine sdeiment processes with HEC-HMS and HEC-RAS", In Proc. 2010 Watershed Management Conference. Madison, WI: ASCE (2010)
- 전계원, "저지대 농경지의 홍수범람 분석", 한국농공학회논문집, 49(2), pp.17~24 (2007), 한국농공학회
- 이원희, "HEC-HMS와 HEC-RAS모형의 연계에 의한 댐 유역의 홍수영향 분석", 한국농공학회논문집, 46(2), pp.15~25 (2004), 한국농공학회
- Basic river maintenance plan for Hong-Reung River, "Ministsry of Land", Ministry of Land, Korea, ~ (2004)
- Namyangju City, "Namyangju statistical year book", Namyangju, Korea, ~ (2010)
- Park, J. M., "Development of GIS based farmland flooding damage simulation system", 박사, pp.2003
- Tate E. C., "Floodplain mapping using HEC-RAS and ArcView GIS", 석사, pp.1999
- U.S. Army Corps of Engineers (USACE), "HECRAS River Analysis Systme user's Manual 4.1", ~ (2010)
- U.S. Army Corps of Engineers (USACE), "Hydrologic Modelling System HEC-HMS user's manual version 3.5", ~ (2010)