DOI QR코드

DOI QR Code

Sensitivity Analysis of Bed Changes for Different Sediment Transport Formulas Using the HEC-6 Model - The Lower Nakdong River

HEC-6 모형을 이용한 유사량 공식에 따른 하상변동 민감도 분석 - 낙동강 하류를 대상으로

  • Jeong, Won-Jun (Department of Civil and Environmental Engineering, Myongji University) ;
  • Ji, Un (Department of Civil and Environmental Engineering, Myongji University) ;
  • Yeo, Woon-Kwang (Department of Civil and Environmental Engineering, Myongji University)
  • 정원준 (명지대학교 토목환경공학과) ;
  • 지운 (명지대학교 토목환경공학과) ;
  • 여운광 (명지대학교 토목환경공학과)
  • Received : 2010.07.08
  • Accepted : 2010.09.27
  • Published : 2010.10.31

Abstract

In this study, the sensitivity analysis of bed changes due to the various sediment transport equations have been conducted for 80 km reach of the Lower Nakdong River using the HEC-6 which is one dimensional numerical model. The bed elevation changes according to the different sediment transport formulas were compared and analyzed quantitatively. As a result of the numerical simulation, the final bed elevation calculated by Engelund and Hansen(1967), Ackers and White(1973), and Yang(1979) formulas was similar to one another in configuration. The bed change simulated by Engelund and Hansen(1967) were greatest among them, for example, 5.5 m deposition and 2.9 m erosion for 100 years. Also, in the case of Toffaleti (1969) equation, the maximum bed deposition of 8.04 m after 100 years was induced at the 73 km location upstream of the Nakdong River Estuary Barrage. Meyer-Peter-M$\ddot{u}$ller(1948) and Wilcock(2001) formulas produced the deposition only at the upstream end and there was little bed change in the downstream area. The unreal bed configuration of continuously up and down pattern was simulated by Laursen(1958) transport equation.

Keywords

Bed change;HEC-6, Lower Nakdong River;Sediment transport formulas;Sensitivity analysis

Acknowledgement

Supported by : 한국연구재단

References

  1. 건설교통부, 1991, 낙동강 하천정비기본계획.
  2. 건설교통부, 2001, 서낙동강 하천정비기본계획.
  3. 건설교통부, 2006, 낙동강수계 본류(구포 등 3개소) 유량 측정조사 보고서.
  4. 고수현, 송인렬, 심창석, 2004, 유사량 산정공식에 따른 유사 및 하상변동 예측에 관한 연구, 한국환경과학회지, 13(3), 263-277. https://doi.org/10.5322/JES.2004.13.3.263
  5. 김진흥, 김상수, 2002, 자연 하천에서 총유사량 측정 및 분석, 한국과학연구, 13(1), 29-41.
  6. 남선우, 1978, 하천의 유사량과 하상변동에 관한 연구, 한국수자원학회, 11(1), 47-58.
  7. 박정응, 1984, 홍수시의 하상변동에 관한 연구, 박사학위논문, 한양대학교.
  8. 서일원, 1994, 하상변동 예측기법의 개발연구, 국제수문 개발계획(IHP)연구 보고서.
  9. 우효섭, 유권규, 1991, 하상변동 예측모형의 비교분석, 한국건설기술연구원.
  10. 지운, Julien, P. Y., 박상길, 김병달, 2008, 낙동강 하류의 유사특성과 낙동강 하구둑 준설효과에 관한 수치모의 연구, 대한토목학회논문집, 28(4), 405-411.
  11. 한국수자원공사, 2007, 낙동강하구둑 종합관리를 위한 유지관리 개선 연구.
  12. 한국수자원공사, 2008, 낙동강하구둑 유지관리 개선방안 연구 보고서.
  13. Ackers, P., White, W. R., 1973, Sediment transport: A New approach and analysis, Journal of the Hydraulics Division, ASCE, 99(11), 2041-2060.
  14. Chang, H. H., Hill, J. C., 1977, Minimum stream power for rivers and deltas, Journal of the Hydraulics Division, ASCE, 103(12), 1375-1387.
  15. Chen, Y. H., Holly, F. M., Mahmood, K., Simons, D. B., 1975, Transport of Material by Unsteady Flow, Unsteady Flow in Open Channels, 1, 313-365.
  16. Engelund, F., Hansen, E., 1967, A Monograph on Sediment Transport to Alluvial Streams, Copenhagen, Teknik Vorlag.
  17. Ji, U., 2006, Numerical model for sediment flushing at the Nakdong River Estuary Barrage, Ph. D. Dissertation, Colorado State University, Fort Collins, Colorado, USA.
  18. Laursen, E. M., 1958, The total sediment load of streams, Journal of the Hydraulics Division, ASCE, 84(1), 1530-1536.
  19. Meyer-Peter, E., Muller, R., 1948, Fomula for bed-load transport, Proceedings of International Association for Hydraulic Research, 2nd Meeting, Stockholm.
  20. Toffaleti, F. B., 1969, Definitive computations of sand discharge in rivers, Journal of the Hydraulics Division, ASCE, 95(1), 1831-1842.
  21. Thomas, W. A., Prasuhn, A. L., 1977, Mathematical modeling of sediment transport scour and deposition, Journal of the Hydraulics Division, ASCE, 103(8), 851-863.
  22. USACE, 1995, HEC-6 Scour and Deposition in River and Reservoirs User`s Manual, US Army Corps of Engineers (USACE), Hydrologic Engineering Center (HEC).
  23. Wilcock, P. R., 2001, Toward a Practical Method for Estimating Sediment-Transport Rates in Gravel Bed Rivers, Earth Surface Processes and Landforms, 26, 1395-1408. https://doi.org/10.1002/esp.301
  24. Yang, C. T., 1979, Unit Stream Power Equation for Total Load, Journal of the Hydraulics Division, ASCE, 40, 123-138.
  25. Yang, C. T., 1998, Simulation and Prediction of River Mophologic Changes Using GSTARS 2.0, International Conference on Hydro-Science and Engineering, Cottbus/Berlin, Germany.
  26. Yang, C. T., 2003, SEDIMENT TRANSPORT THEORY AND PRACTICE, Krieger, Malabar, Florida.
  27. Yang, J. C., 1986, Numerical simulation of bed evolution in multi-channel river systems, Ph. D. Dissertation, The University of Iowa, Iowa City, USA.

Cited by

  1. Prediction of Chlorophyll-a Changes due to Weir Constructions in the Nakdong River Using EFDC-WASP Modelling vol.17, pp.2, 2012, https://doi.org/10.4491/eer.2012.17.2.095