산림지역의 유출특성을 고려한 남강댐유역내 주요 하천관측지점에 대한 홍수유출량 추정
Flood Runoff Estimation for the Streamflow Stations in Namgang-Dam Watershed Considering Forest Runoff Characteristics
1
조회
0
다운로드
4
인용
0
참고문헌
초록
The objective of this study is to estimate the flood runoff for three guaged stations within Namgang-Dam watershed which are operated by KWATER. For a flood runoff simulation, HEC-HMS was applied and the simulated runoff was compared with observed from 2004 to 2008. The watershed area of Sancheong, Shinan, and Changchon were 693.6 ㎢, 413.4 ㎢, and 346.48 ㎢, respectively. The average runoff ratio of observed runoff for three watersheds were 0.725, 0.418, and 0.586, respectively. The dominant land cover of three watersheds are forest with the value of 71.6 %, 73.1 %, and 82.0 %. Three different cases according to the potential maximum retention of forest areas for calculating the curve number were applied to decrease the error between the simulated and observed. The simulated peak runoff of case 3 which applied the 90 % of potential maximum retention of curve number which is equivalent to AMCⅠ for all the AMCⅠ, AMCⅡ, and AMCⅢ conditions showed least root mean square error (RMSE). The case 1, which was suggested by previous study, showed high discrepancy between the simulated and observed. Since the forest area consists of more than 70 % for all three watersheds, the application of curve number for forest is critical to improve the estimation errors. Further research is required to estimate the more accurate curve number for forest area.
Abstract
The objective of this study is to estimate the flood runoff for three guaged stations within Namgang-Dam watershed which are operated by KWATER. For a flood runoff simulation, HEC-HMS was applied and the simulated runoff was compared with observed from 2004 to 2008. The watershed area of Sancheong, Shinan, and Changchon were 693.6 ㎢, 413.4 ㎢, and 346.48 ㎢, respectively. The average runoff ratio of observed runoff for three watersheds were 0.725, 0.418, and 0.586, respectively. The dominant land cover of three watersheds are forest with the value of 71.6 %, 73.1 %, and 82.0 %. Three different cases according to the potential maximum retention of forest areas for calculating the curve number were applied to decrease the error between the simulated and observed. The simulated peak runoff of case 3 which applied the 90 % of potential maximum retention of curve number which is equivalent to AMCⅠ for all the AMCⅠ, AMCⅡ, and AMCⅢ conditions showed least root mean square error (RMSE). The case 1, which was suggested by previous study, showed high discrepancy between the simulated and observed. Since the forest area consists of more than 70 % for all three watersheds, the application of curve number for forest is critical to improve the estimation errors. Further research is required to estimate the more accurate curve number for forest area.
참고문헌 (14)
- 김상민, "국립공원내 홍수피해 저감을 위한 미계측 산림지역의 설계홍수량 추정", 한국농공학회논문집, 51(5), pp.107~113 (2009), 한국농공학회
- 성충현, "농업소유역의 홍수유출량 추정을 위한 단위도 모형 비교연구", 한국농공학회논문집, 50(3), pp.19~36 (2008), 한국농공학회
- 김상민, "HEC-HMS 모형과 HEC-GeoHMS 모듈을 이용한 농업소유역의 홍수유출 해석", 한국농공학회논문집, 45(6), pp.119~127 (2003), 한국농공학회
- 김상민, "수질 모니터링과 원단위법을 이용한 농업소유역의 오염부하량 추정", 한국농공학회논문집, 45(3), pp.94~102 (2003), 한국농공학회
- 김상민, "오염총량관리를 위한 남강댐유역 BOD 자료의 공간특성 분석", 한국농공학회논문집, 52(3), pp.81~88 (2010), 한국농공학회
- Lee, E. S., "Estimation of Flood-Wave Travel Time in Geum River Basin", Annual meeting of KSCE 2002, 통권 : 11, pp.1410~1413 (2002)
- 김규태, "누가분포함수를 활용한 강우강도식의 국내 적용성 평가", 대한토목학회 논문집B, 28(4), pp.363~374 (2008), 대한토목학회
- A study on the Storage and Infiltration Facilities for Reducing of Runoff Quantity (Ⅴ), "Shim, J. H.", ~, pp.National Institute for Disaster Prevention NIDP-2002-01 (2002)
- 성기원, "제한적 강우-지속기간 자료를 이용한 실용적 IDF 관계식의 유도", 한국수자원학회 논문집, 41(6), pp.587~595 (2008), 한국수자원학회
- Lee, E. H., "Estimation of Inter Event Time by Exponential decay Function", Annual meeting of KSCE 2004, pp.4151~4156 (2004)
- Kim, G. T., "Suggestion of CN estimation using precise soil map", Magazine of Korea Water Resources Association, 36(4), pp.45~53 (2003)
- 김상호, "GIS 기반의 HEC-HMS를 이용한 진위천 유역의 강우-유출모형 구성", 한국지리정보학회지, 9(4), pp.119~128 (2006), 한국지리정보학회
- Woo, K. J., "The Analysis of a Flood Outflow Through the Combination of GISd and HEC-HMS", Department of civil Engineering, pp.2002
- 이상호, "HEC-HMS와 HEC-RAS를 이용한 지리산 국립공원 달궁 유역 침수 모의", 농업생명과학연구, 42(2), pp.21~29 (2008), 농업생명과학연구원