홍수위 해석을 위한 미측정 하천 단면 추정
Estimating Ungauged River Section for Flood Stage Analysis
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다운로드
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참고문헌
키워드
초록
The objective of this study was to develop the simple method to estimate ungauged river section for flood stage analysis. Damage prediction should beprioritized using hydrological modeling to reduce flood risk. Mostly, the geographical data using hydrological modeling depends on national rivercross-section survey. However because of the lack of measured data, it is difficult to apply to many local streams or small watersheds. For this reason,this study suggest the method to estimate unguaged river cross-section. Simple regression equations were derived and used to estimate river cross-sectionby analyzing the correlation between the river cross-sectional characteristics (width, height and area). The estimated cross-sections were used to simulateflood level by HEC-RAS (Hydrologic Engineering Center’s River Analysis System). The applicability of this method was verified by comparingsimulated flood level between measured and estimated cross-section. The water surface elevation of the flood stage analysis was 6.56-7.24 m, 5.33-5.95m and 6.12-6.75 m for measured cross section, for estimated cross section and for estimated cross section based on DEM elevation, respectively. Furtherstudy should consider other factors for more accurate flood stage analysis. This study might be used one of the guidelines to estimate ungauged riversection for flood stage analysis.
Abstract
The objective of this study was to develop the simple method to estimate ungauged river section for flood stage analysis. Damage prediction should beprioritized using hydrological modeling to reduce flood risk. Mostly, the geographical data using hydrological modeling depends on national rivercross-section survey. However because of the lack of measured data, it is difficult to apply to many local streams or small watersheds. For this reason,this study suggest the method to estimate unguaged river cross-section. Simple regression equations were derived and used to estimate river cross-sectionby analyzing the correlation between the river cross-sectional characteristics (width, height and area). The estimated cross-sections were used to simulateflood level by HEC-RAS (Hydrologic Engineering Center’s River Analysis System). The applicability of this method was verified by comparingsimulated flood level between measured and estimated cross-section. The water surface elevation of the flood stage analysis was 6.56-7.24 m, 5.33-5.95m and 6.12-6.75 m for measured cross section, for estimated cross section and for estimated cross section based on DEM elevation, respectively. Furtherstudy should consider other factors for more accurate flood stage analysis. This study might be used one of the guidelines to estimate ungauged riversection for flood stage analysis.
참고문헌 (17)
- Choi, N. I, "GIS based spatial interpolation method for the reconstruction of river channel", Ph. D, pp.2009
- 최내인, "Bilinear 보간법에 의한 임의 하천단면 생성에 관한 연구", 한국지형공간정보학회지, 16(3), pp.105~110 (2008), 한국지형공간정보학회
- Han, G. Y, "HEC-RAS manual", Proceedings of the Korea Water Resources Association Conference, 13, pp.205~377 (2004)
- 정창삼, "주변지형을 포함한 3차원 하상단면 표출에 관한 연구", 한국방재학회논문집, 13(3), pp.185~190 (2013), 한국방재학회
- 강문성, "비점원오염모델을 이용한 오염총량모의시스템의 개발 및 적용", 한국수자원학회 논문집, 36(1), pp.117~128 (2003), 한국수자원학회
- 강문성, "RS와 GIS-AGNPS 모형을 이용한 소유역에서의 비점원오염부하량 추정", 한국농공학회논문집, 45(1), pp.102~114 (2003), 한국농공학회
- Kim, J. J, "Calculating represent river cross section using GIS", Master, pp.2001
- 이현직, "고해상도 디지털 항공사진을 이용한 국가기본도 고도화 방안", 한국지형공간정보학회지, 18(1), pp.135~143 (2010), 한국지형공간정보학회
- 이진덕, "수치항공사진으로부터 소형건물의 지붕 경계 추출", 한국콘텐츠학회 논문지, 14(5), pp.425~435 (2014), 한국콘텐츠학회[DOI]
- 이재일, "공간분석기법을 이용한 하천단면 변화분석 - 논산천을 대상으로 -", 환경영향평가, 19(1), pp.91~97 (2010), 한국환경영향평가학회
- Merwade, V, "GIS techniques for creating river terrain models for hydrodynamic modeling and flood inundation mapping", Environmental Modelling &Software, 23(10), pp.1300~1311 (2008)
- Report of mater plan(alteration) for Dongjin river and other 3 national rivers, "Ministry of Land, Transort and Maritime Affairs (MLTMA)", Republic of Korea: Iksan Regional Construction and Management Administration, ~ (2011)
- Moriasi, D. N, "Hydrologic and water quality models: Performance measures and evaluation criteria", Transactions of the ASABE, 58(6), pp.1763~1785 (2015)
- Nash J. E, "River flow forecasting through conceptual models parⅠ-A discussion of principles", Journal of Hydrology, 10, pp.282~290 (1970)
- National Emergency Management Agency(NEMA), "Yearbook of disasters", ~ (1998)
- U. S. Army Corps of Engineers(USACE), "HEC-RAS river analysis system user’s Manual 4. 1", ~ (2010)
- 우한별, "다중시기 항공사진과 현장조사를 통한 해안침식 변화 연구: 태안반도를 사례로", 한국지형학회지, 17(4), pp.71~83 (2010), 한국지형학회