한국수자원학회논문집 (Journal of Korea Water Resources Association)

  • 제51권3호
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  • Pages.183-193
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  • 2018
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  • 2799-8746(pISSN)
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  • 2799-8754(eISSN)
한국수자원학회 (Korea Water Resources Association)
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내성천의 영주댐 하류 구간의 하도형성유량 산정 및 안정하도 단면 평가

Channel-forming discharge calculation and stable channel section evaluation for downstream reach of Yeongju dam in Naesung stream

  • 장은경 (콜로라도 주립 대학교 토목환경공학과) ;
  • 안명희 (한국건설기술연구원 수자원.하천연구소) ;
  • 지운 (한국건설기술연구원 수자원.하천연구소)
  • Jang, Eun-Kyung (Department of Civil and Environmental Engineering, Colorado State University) ;
  • Ahn, Myeonghui (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Ji, Un (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
  • 투고 : 2017.07.04
  • 심사 : 2017.12.07
  • 발행 : 2018.03.31
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초록

본 연구에서는 내성천의 영주댐 하류 구간에서의 안정하도 단면 평가를 수행하기 위해 하도형성유량을 산정하였으며 이를 기준으로 용혈지점에서의 안정하도 경사, 수심, 하폭에 대한 평가를 수행하였다. 하도형성유량과 안정하도 평가를 수행하기 위해 사용된 자료는 용혈지점에서 영주댐 건설 전에 수집된 자료이다. 특정 재현기간별 유량, 유효유량, 만제유량을 산정하여 비교 검토를 통해 최종적으로 만제유량인 $260m^3/s$을 하도형성유량으로 채택하였다. 또한 안정하도 설계 프로그램(SCAD)을 활용하여 Ackers and White, Brownlie, Engelund and Hansen, Yang 공식을 각각 적용하여 대상단면의 안정하도를 평가하였다. 그 결과, 모든 유사이송공식이 현재 하도의 하상경사인 0.00177보다 완만한 경사를 제시하는 것으로 나타났으며 하도의 바닥 폭을 설계구속인자로 고려할 경우 Ackers and White 공식을 적용하여 안정하도를 계산했을 때 안정하도의 수심이 현재 단면의 수심과 가장 근접한 것을 알 수 있었다.

Channel-forming discharge for downstream section of Yeongju dam in Naesung stream was calculated to analyze stable channel geometry. Determined channel-forming discharge was applied to design stable channel slope, depth, and base width at Yonghyeol station. Used data for channel-forming discharge and stable channel analysis were collected in downstream section of Yeongju dam in Naesung stream before the dam construction. Specified recurrence interval discharge, effective discharge, and bankfull discharge were analyzed and compared to decide final channel-forming discharge which was $260m^3/s$ of bankfull discharge. Stable channel analysis and design program was applied to predict stable channel section of width, depth, and slope with various sediment transport equations of Ackers and White, Brownlie, Engelund and Hansen, and Yang's equations. As a result, all equations of sediment transport produced milder slopes compared to current bed slope of 0.00177 and Ackers and White equation presented the most similar flow depth of current section with the design constraint of current channel width.

키워드

참고문헌

  1. Abou-Seida, M. M., and Saleh, M. (1987). "Design of stable alluvial channel." Journal of Hydraulic Research, Vol. 25, No. 4, pp. 433-446. https://doi.org/10.1080/00221688709499261
  2. Ackers, P., and White, W. R. (1973). "Sediment transport: a new approach and analysis." Journal of Hydraulics Division, ASCE, Vol. 99, No. 11, pp. 2041-2060.
  3. Afzalimehr, H., Heidarpour, M., and Farshi, S. H. (2003). "Resistance to flow in gravel-bed rivers." Journal of Science and Technology of Agriculure and Natural Resources, Vol. 7, No. 1, pp. 19-31.
  4. Andrews, E. D. (1980). "Effective and bankfull discharges of streams in the Yampa river basin, Colorado and Wyoming." Journal of Hydrology, Vol. 46, No. 3-4, pp. 311-330. https://doi.org/10.1016/0022-1694(80)90084-0
  5. Brownlie, W. R. (1981). Prediction of flow depth and sediment transport in open channels. California Institute of Technology, Pasadena, California, Report No. KH-R-43A, November, pp. 230.
  6. Colby, B. R., and Hembree, C. H. (1955). Computations of total sediment discharge, Niobrara river near Cody, Nebraska. U.S. Geological Survey.
  7. Copeland, R. R. (1994). Application of channel stability methods - case studies. Technical Report HL-94-11, September, United States Army Corps of Engineers, Waterways Experiment Station, Vicksburg, Mississippi.
  8. Copeland, R. R., Sora, P., and Thorne, C. (2005). "Channel-forming discharge and hydraulic geometry width predictors in meandering sand-bed rivers." Proceedings of World Water and Environmental Resources Congress, ASCE, Reston, Virginia, pp. 1-12.
  9. Engelund, F., and Hansen, E. E. (1967). "A monograph of sediment transport in alluvial rivers." Technical University of Denmark, Copenhagen, p. 62.
  10. Griffiths, G. A. (1983). "Stable-channel design in alluvial rivers." Journal of Hydrology, Vol. 65, No. 4, pp. 259-270. https://doi.org/10.1016/0022-1694(83)90080-X
  11. Jang, E. K. (2012). Analysis of channel-forming discharge calculation and channel section evaluation for stable channel design. M. S. thesis, University of Myongji, Korea (in Korean).
  12. Jang, E. K., Ji, U., Kim, G. H., and Yeo, W. K. (2016). "Stable channel design with different sediment transport equations and geomorphologic constraints in Cheongmi stream." Journal of Korea Society of Civil Engineers, Vol. 20, No. 5, pp. 2041-2049.
  13. Jeong, W. J., and Ji, U. (2014). "Stable sensitivity analysis and parameter evaluation of a distributed model for rainfall-runoff-soil erosion-sediment transport modeling in the Naesung stream watershed." Journal of Korea Water Resources Association, Vol. 47, No. 12, pp. 1121-1134. https://doi.org/10.3741/JKWRA.2014.47.12.1121
  14. Ji, U., and Jang, E. K. (2015). "Stable channel design for the gravel-bed river considering design constraints." Journal of the Academia-Industrial, Vol. 16, No. 4, pp. 2860-2867.
  15. Ji, U., Jang, E. K., and Lee, C. J. (2015). "Numerical analysis for bed changes at the meandering stream due to a short term flood event." Journal of the Korean Society of Civil Engineers, Vol. 35, No. 6, pp. 1229-1236. https://doi.org/10.12652/Ksce.2015.35.6.1229
  16. Ji, U., Jang, E. K., and Yeo, W. K. (2011). "Channel-forming discharge evaluation for rivers with high coefficients of river regime." Journal of Korea Society of Civil Engineers, Vol. 31, No. 4B, pp. 361-367.
  17. Ji, U., Julien, P. Y., Kang, J. U., and Yeo, H. K. (2010). "Stable channel analysis and design for the abandoned channel restoration site of Cheongmi stream using regime theory." Journal of Korea Society of Civil Engineers, Vol. 30, No. 3B, pp. 305-313.
  18. Ji, U., Velleux, M., Julien, P. Y., and Hwang, M. (2014). "Risk assessment of watershed erosion at Naesung stream, South Korea." Journal of Environmental Management, Vol. 136, pp. 16-26.
  19. KICT (2013). Analysis of change in river morphology and vegetation due to artificial structures. Internal Research Project, Korea Institute of Civil Engineering and Building Technology, KICT 2013-221 (in Korean).
  20. KICT (2016). Analysis of change in river morphology and vegetation due to artificial structures. Internal Research Project, Korea Institute of Civil Engineering and Building Technology, KICT 2016-187 (in Korean).
  21. Kim, Y. J., and Lee, C. J. (2014). "Analysis on channel change of the Naesung river -before the Youngju dam impoundment (1970-2011)-." Journal of the Korean Geomorphological Association, Vol. 21, No. 1, pp. 17-31. https://doi.org/10.16968/JKGA.21.1.2
  22. Leopold, L. B., Wolman, M. G., and Miller, J. P. (1964). Fluvial processes in geomorphology. W. H. Freeman and Company.
  23. Meyer-Peter, E., and Muller, R. (1948). "Formulas for bed-load Transport." Proceedings of the 2nd Meeting of the International Association for Hydraulic International Association of Hydraulic Research Delft, Sweden, pp. 39-64.
  24. Patel, M., Deshpande, V., and Kumar, B. (2015). "Turbulent characteristics and evolution of sheet flow in an alluvial channel with downward seepage." Geomorphology, Vol. 248, pp. 161-171. https://doi.org/10.1016/j.geomorph.2015.07.042
  25. Raff, D. A., Bledsoe, B. P., and Flores, A. N. (2004). GeoTool user's manual. Colorado State University.
  26. Shields, F. D., Copeland, R. R., Klingeman, P. C., Doyle, M. W., and Simon, A. (2003). "Design for stream restoration." Journal of Hydraulic Engineering, Vol. 129, No. 8, pp. 575-584. https://doi.org/10.1061/(ASCE)0733-9429(2003)129:8(575)
  27. Smelser, M. E., and Schmidt, J. C. (1998). An assessment methodology for determining historical changes in mountain streams. U.S. Forest Service General Technical Report RMRS-GTR-6, p. 29.
  28. U.S. Forest Service (1996). Salmon land and management plan. Amended April 1996.
  29. Wolman, M. G., and Miller, J. P. (1960). "Magnitude and frequency of forces in geomorphic processes." Journal of Geology, Vol. 68, No. 1, pp. 54-74. https://doi.org/10.1086/626637
  30. Yang, C. T. (1979). "Unit stream power equation for total load." Journal of Hydrology, Vol. 40, No. 1-2, pp. 123-138. https://doi.org/10.1016/0022-1694(79)90092-1