대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제34권2호
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  • Pages.493-503
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  • 2014
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  • 1015-6348(pISSN)
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  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
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NRCS-CN 방법을 이용한 유역평균 유효우량 산정기법의 비교·분석

Comparative Analysis of Estimation Methods for Basin Averaged Effective Rainfall Using NRCS-CN Method

  • 문건우 (한양대학교 대학원 건설환경공학과) ;
  • 유지영 (전북대학교 공과대학 토목공학과) ;
  • 안재현 (서경대학교 이공대학 토목건축공학과) ;
  • 김태웅 (한양대학교 공학대학 건설환경플랜트공학과)
  • 투고 : 2013.10.30
  • 심사 : 2014.02.03
  • 발행 : 2014.04.01
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초록

국내 유역에서 유효우량을 산정하기 위한 방법으로 주로 유역 평균 CN을 적용하는 NRCS-CN 방법이 사용되고 있다. 본 연구에서는 국내 유역에 적절한 유역 대표 유효우량 산정법을 개발하기 위하여, 토지이용종류별 CN을 면적가중평균한 유역 대표 CN을 이용하여 산정한 유효우량(유효우량 I)과 토지이용종류별 CN을 이용하여 소구역 유효우량을 산정한 후 면적가중평균한 유효우량(유효우량 II)을 산정한 후, 관측된 강우-유출 자료를 이용하여 산정한 직접유출량과의 비교분석을 수행하였다. 본 연구 결과, 유효우량 II가 유효우량 I 보다 전반적으로 크게 산정되었으며, 이는 유효우량 I이 가지는 관측 직접유출량과의 오차를 크게 줄여주는 것이다. 또한, 본 연구에서 수행한 오차분석은 유효우량 II가 유효우량 I 보다 관측 직접유출량에 대한 높은 정확성을 가지는 것을 보여주었다.

The NRCS-CN method is generally applied for estimating effective rainfalls in practice, in which the basin-averaged CN is normally used. In order to develop a more appropriate method for estimating effective rainfalls in a basin, this study compared estimated effective rainfalls from two distinct methods with the observed direct runoff. The first method is to estimate the basin-representative effective rainfall using the basin-averaged CN (hereafter, effective rainfall I), whereas the second method to estimate the basin-averaged effective rainfall through areal-averaging sub-area effective rainfalls corresponding to the soil type and landuse type (hereafter, effective rainfall II). The overall results indicated that the effective rainfall II was higher than the effective rainfall I and closer to the observed direct runoff. The study also performed error analyses to verify that the effective rainfall II can be applied in practice in a basin as more accurate estimate of basin-representative effective rainfall.

키워드

참고문헌

  1. Cho, H. J., O, J. H., Nam, B. H. and Jung, K. T. (2004). "A study on the determination of SCS-CN using GIS." Journal of the Korean Society for Geospatial Information System, KOGIS, Vol. 12, No. 1, pp. 39-44 (in Korean).
  2. Ebrahimian, M., Nuruddin, A. A., Soom, M. M. and Sood, A. M. (2012). "Application of NRCS-curve number method for runoff estimation in a mountainous watershed." Caspian Journal of Environmental Sciences, Vol. 10, No. 1, pp. 103-114.
  3. Haestad (2003). Stormwater conveyance modeling and design.
  4. Hawkins, R. H., Hjelmfelt, A. T. and Zevenbergen, A. W. (1985). "Runoff probability, storm depth, and curve numbers." Journal of Irrigation and Drainage Engineering Division, ASCE, Vol. 111, No. 4, pp. 330-340 https://doi.org/10.1061/(ASCE)0733-9437(1985)111:4(330)
  5. Hoggan, D. H. (1989). Computer-assisted floodplain hydrology and hydraulics, McGraw-Hill, NY.
  6. Jun, C. H. and Yoo, C. S. (2012). "Application of the beta distribution for the temporal quantification of storm events." Journal of Korea Water Resources Association, KWRA, Vol. 45, No. 6, pp. 531-544 (in Korean). https://doi.org/10.3741/JKWRA.2012.45.6.531
  7. Jung, J. H., Jang, S. P., Kim, H. I., Jung, Y. T., Hur, K. S. and Park, H. (1995). "Runoff rate for the estimation of hydrologic soil groups." Journal of the Korean Society of Agricultural Engineers, KSAE, Vol. 36, No. 6, pp. 12-33 (in Korean).
  8. Kibler, D. F. (1982). "Desk-top runoff methods for urban stormwater calculation." Water Resources Monograph Series, AGU, Vol. 7, pp. 87-135
  9. Kim, K. T. and Choi, Y. S. (2004). "A study on the estimation of effective precipitation using detailed soil map." Journal of the Korean Association of Geographic Information Studies, KAGIS, Vol. 7, No. 2, pp. 1-15 (in Korean).
  10. Kim, N. W., Lee, J. W., Lee, J. W. and Lee, J. E. (2008). "Estimation of runoff curve number for Chungju Dam watershed using SWAT." Journal of Korea Water Resources Association, KWRA, Vol. 41, No. 12, pp. 1231-1244 (in Korean). https://doi.org/10.3741/JKWRA.2008.41.12.1231
  11. Lee, M. W., Yi, C. S., Kim, H. S. and Shim, M. P. (2005) "Determination of suitable antecedent precipitation day for the application of NRCS method in the Korean basin." Journal of the Korean Wetlands Society, KWS, Vol. 7, No. 3, pp. 41-48 (in Korean).
  12. Ministry of Construction and Transportation (MOCT) (2007). Flood estimation techniques guidelines (in Korean).
  13. Ministry of Land, Transport and Maritime Affairs (MLTM) (2010). Design flood estimation advanced planning study report (in Korean).
  14. Ministry of Land, Transport and Maritime Affairs (MLTM) (2012). Design flood estimation techniques (in Korean).
  15. Mogeln, G. E. (2000). "Effect of orientation of spatially distributed curve numbers in runoff calculations." Journal of the American Water Resources Association, JAWRA, Vol. 36, No. 6, pp. 1391-1400. https://doi.org/10.1111/j.1752-1688.2000.tb05734.x
  16. Melesse, A. M. and Shih, S. F. (2002). "Spatially distributed storm runoff depth estimation using Landsat images and GIS." Computers and Electronics in Agriculture, Vol. 37, No. 1, pp. 173-183. https://doi.org/10.1016/S0168-1699(02)00111-4
  17. National Institute of Agricultural Science and Technology (NIAST) (2007). National institute of agricultural science and technology research report : Agricultural and Environmental Research (in Korean).
  18. Oh, K. D., Jun, B. H., Han, H. G., Jung, S. W., Cho, Y. H. and Park, S. Y. (2005a) "Curve number for a small forested mountainous catchment." Journal of Korea Water Resources Association, KWRA, Vol. 38, No. 8, pp. 605-616 (in Korean). https://doi.org/10.3741/JKWRA.2005.38.8.605
  19. Oh, K. D., Jun, B. H., Yang, G. G., Ahn, W. S. and Cho, Y. H. (2005b) "Curve number for urbanized areas." Journal of Korea Water Resources Association, KWRA, Vol. 38, No. 12, pp. 1009-1020 (in Korean). https://doi.org/10.3741/JKWRA.2005.38.12.1009
  20. Park, C. H., Yoo, C. S. and Kim, J. H. (2005). "Revised AMC for the application of SCS method : 1. Review of SCS Method and Problems in GIS Application." Journal of Korea Water Resources Association, KWRA, Vol. 38, No. 11, pp. 955-962 (in Korean). https://doi.org/10.3741/JKWRA.2005.38.11.955
  21. Paudel, M., Nelson, E. J. and Scharffenberg, W. (2009). "Comparison of lumped and quasi-distributed Clark runoff models using the SCS curve number equation." Journal of Hydrologic Engineering, Vol. 14, No. 10, pp. 1098-1106. https://doi.org/10.1061/(ASCE)HE.1943-5584.0000100
  22. Sobhani, G. (1975). A review of selected small watershed design methods for possible adoption to Iranian conditions, M.S. Thesis, Utah State University, Logan, UT.
  23. Soil Conservation Service (SCS) (1972). National engineering handbook, Section 4, Hydrology. US 444 Department of Agriculture, US Government Printing Office, Washington, DC.
  24. Soil Conservation Service (SCS) (1985). National engineering handbook, Section 4, Hydrology. US 444 Department of Agriculture, US Government Printing Office, Washington, DC.
  25. USDA (2004). Part 630 hydrology national engineering handbook, Chapter 10 : Estimation of Direct Runoff from Storm Rainfall.
  26. Yoo, C. S., Park, C. H. and Kim, J. H. (2005). "Revised AMC for the application of SCS method : 2. Revised AMC." Journal of Korea Water Resources Association, KWRA, Vol. 38, No. 11, pp. 963-972 (in Korean). https://doi.org/10.3741/JKWRA.2005.38.11.963
  27. Yoon, T. H. (1991). "Validity of runoff curve number method for estimating of effective rainfall." Journal of Korea Water Resources Association, KWRA, Vol. 24, No. 2, pp. 97-108 (in Korean).

피인용 문헌

  1. Comparing Calculation Techniques for Effective Rainfalls Using NRCS-CN Method: Focused on Introducing Weighted Average and Slope-based CN vol.34, pp.4, 2014, https://doi.org/10.12652/Ksce.2014.34.4.1171