HEC-6 모형을 이용한 유사량 공식에 따른 하상변동 민감도 분석 -낙동강 하류를 대상으로 = Sensitivity Analysis of Bed Changes for Different Sediment Transport Formulas Using the HEC-6 Model - The Lower Nakdong River

다국어 초록 (Multilingual 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-Muller(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.

참고문헌 (Reference)

1 박정응, "홍수시의 하상변동에 관한 연구" 한양대학교 1984

2 남선우, "하천의 유사량과 하상변동에 관한 연구" 한국수자원학회 11 (11): 47-58, 1978

3 우효섭, "하상변동 예측모형의 비교분석" 한국건설기술연구원 1991

4 서일원, "하상변동 예측기법의 개발연구, 국제수문개발계획(IHP)연구 보고서" 1994

5 김진흥, "자연 하천에서 총유사량 측정 및 분석" 13 (13): 29-41, 2002

6 한국수자원공사, "유지관리 개선방안 연구 보고서" 한국수자원공사 2008

7 고수현, "유사량 산정공식에 따른 유사 및 하상변동 예측에 관한 연구" 한국환경과학회 13 (13): 263-277, 2004

8 건설교통부, "서낙동강 하천정비기본계획" 건설교통부 2001

9 한국수자원공사, "낙동강하구둑 종합관리를 위한 유지관리 개선 연구" 한국수자원공사 2007

10 건설교통부, "낙동강수계 본류(구포 등 3개소) 유량측정조사 보고서" 건설교통부 2006

11 건설교통부, "낙동강 하천정비기본계획" 건설교통부 1991

12 지운, "낙동강 하류의 유사특성과 낙동강하구둑 준설효과에 관한 수치모의 연구" 대한토목학회 28 (28): 405-411, 2008

13 Yang, C. T., "Unit Stream Power Equation for Total Load" ASCE 40 : 123-138, 1979

14 Chen, Y. H., "Transport of Material by Unsteady Flow" 1 : 313-365, 1975

15 Wilcock, P. R., "Toward a Practical Method for Estimating Sediment-Transport Rates in Gravel Bed Rivers" 26 : 1395-1408, 2001

16 Laursen, E. M., "The total sediment load of streams" ASCE 84 (84): 1530-1536, 1958

17 Yang, C. T., "Simulation and Prediction of River Mophologic Changes Using GSTARS 2.0" 1998

18 Ackers, P., "Sediment transport: A New approach and analysis" ASCE 99 (99): 2041-2060, 1973

19 Yang, C. T., "SEDIMENT TRANSPORT THEORY AND PRACTICE" Krieger 2003

20 Yang, J. C., "Numerical simulation of bed evolution in multi-channel river systems" The University of Iowa 1986

21 Ji, U., "Numerical model for sediment flushing at the Nakdong River Estuary Barrage" Colorado State University 2006

22 Chang, H. H., "Minimum stream power for rivers and deltas" ASCE 103 (103): 1375-1387, 1977

23 Thomas, W. A., "Mathematical modeling of sediment transport scour and deposition" ASCE 103 (103): 851-863, 1977

24 USACE, "HEC-6 Scour and Deposition in River and Reservoirs User`s Manual" US Army Corps of Engineers (USACE), Hydrologic Engineering Center (HEC) 1995

25 Meyer-Peter, E., "Fomula for bed-load transport" 1948

26 Toffaleti, F. B., "Definitive computations of sand discharge in rivers" ASCE 95 (95): 1831-1842, 1969

27 Engelund, F., "A Monograph on Sediment Transport to Alluvial Streams" Teknik Vorlag 1967