Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Flood Characteristics at Nakdong Estuary with 1 Dimensional Unsteady Model

1차원 부정류 모형을 활용한 낙동강 하류의 홍수 특성

  • Lee, Sang-jin (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Shin, Hyun-Ho (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Kim, Joo-Cheol (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Hwang, Man-Ha (Korea Institute of Water and Environment, Korea Water Resources Corporation)
  • 이상진 (한국 수자원공사 K-Water연구원) ;
  • 신현호 (한국 수자원공사 K-Water연구원) ;
  • 김주철 (한국 수자원공사 K-Water연구원) ;
  • 황만하 (한국 수자원공사 K-Water연구원)
  • Received : 2009.09.16
  • Accepted : 2009.11.25
  • Published : 2010.02.28
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Abstract

Rainfalls would increase the discharges or stages of tributary channels in natural watersheds, which in turn augment the magnitude of main stream stages. Rising of water surface elevation in main streams can affect and damage the human activities because of the possibilities of the breakdown or overflow of the embankment. Therefore it is necessary to establish the structural or non-structural alternatives for the sake of prevention or treatment of those disasters. Many mathematical models to analyze the flood flows in natural watercourses have been proposed as the non-structural alternatives so far. In this study one of the such models, FLDWAV developed by NWS(National weather Service), is applied to the downstream reach of Nakdong river. Model calibration is performed on various Manning's roughness coefficients at the gauging stations. The simulation results are compared well with hydrological estimations of flood discharges considering the effects of multipurpose dams upstream of control points.

Keywords

References

  1. 김원, 김양수, 우효섭, 1995, 부정류 모형을 이용한 한강 하류부 하도의 조도계수 산정, 한국수자원학회지, 28(6), 133-146.
  2. 김원, 우효섭, 김양수, 1996, 1차원 St. Venant 방정식을 이용한 한강 하류부 하도의 홍수류 특성 분석, 한국수자원학회지, 29(1), 163-179.
  3. 이상호, 2001, 수위관측과 수리학적 하도추적에 의한 수위-유량 관계식 작성, 한국수자원학회지, 34(5), 551-560.
  4. 이을래, 신철균, 김상호, 2006, 낙동강 유역 수리학적 하도추적 모형 구축 및 적용 (I) 이론 및 도달시간 산정, (II) 홍수사상의 적용, 한국습지학회지, 8(1), 73-96.
  5. 한국수자원공사 물관리 센터, 2004, 하구둑 조위를 고려한 낙동강 하류부 수리학적 하도추적 모형의 연구, 연구보고서.
  6. Fread ,D. L., 1987, National Weather Service Operational Dynamic Wave Model, National Weather Service, Silver Springs, MD.
  7. Fread, D. L., Lewis, J. M., 1998, NWS FLDWAV MODEL, Theoretical Description avd User Documentation, Hydrologic Research Laboratory Office of Hydrology, National Weather Service(NWS), NOAA.
  8. Henderson, F. M., 1966, Open Channel Flow, MacMillan Co., Newyork.

Cited by

  1. A Study on the Effect of Dredging and Operation of Weirs on Hydraulic Characteristics in Nakdong River vol.33, pp.5, 2013, https://doi.org/10.12652/Ksce.2013.33.5.1829