Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
권호 표지
DOI QR코드

DOI QR Code

Development of Concentration Time and Storage Coefficient Considering Regional Trend in Urban Stream Watershed

지역적 성향을 고려한 도시하천 유역의 도달시간 및 저류상수 공식 개발

  • Bae, Deg-Hyo (Dept. of Civil and Environmental Engrg., Sejong Univ.) ;
  • Kim, Yong-Jae (Dept. of Civil and Environmental Engrg., Sejong Univ.)
  • 배덕효 (세종대학교 물자원연구소, 건설환경공학과) ;
  • 김용재 (세종대학교 건설환경공학과)
  • Received : 2015.01.13
  • Accepted : 2015.04.27
  • Published : 2015.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

The objective of this study is to develop the equations for concentration time and storage coefficient considering regional trend in urban stream watershed for reliable hydrological analysis. The 13 basins located in Jungrang, Tan, Anyang, and Hongje stream are selected for the data collection and formula development in this study. The stepwise multiple-regression analysis is used for the development considering watershed, urban, and precipitation characteristic indices. The developed formulae are compared with the domestic and foreign empirical formulae and evaluated the accuracy in urban stream area. It shows the computed value from the equation developed in this study is more accurate than those from other empirical formulae. The error sum, average error and RMSE of computed values from the developed equations in this study are the lowest. The formulae considering the regional trend of urban stream watershed are worth in terms of showing better results than the domestic and foreign empirical formulae. It can be concluded the developed formulae can be useful in urban stream watershed.

본 연구에서는 도시하천 유역의 신뢰성 높은 수문해석을 위해 지역적 성향을 고려한 도달시간 및 저류상수 공식을 개발하였다. 이를 위해 국내 대표 도시하천 유역인 중랑천, 탄천, 안양천, 홍제천 내 13개 유역을 대상으로 지역적 성향이 없는 유역특성인자와 지역적 성향이 있는 도시 및 강우특성인자를 분석하였으며, 단계적 다중회귀분석을 통하여 공식을 개발하였다. 개발된 공식은 국내외 경험식들과 함께 도시하천 유역에 대해 정확도를 비교 평가하였다. 분석결과 본 연구에서 개발한 공식의 계산값이 다른 경험식들에 비해 더욱 정확하게 모의하였으며 오차합, 평균오차, 평균제곱근오차 또한 가장 낮은 것으로 나타났다. 본 연구는 도시하천 유역이라는 지역적 성향을 고려하여 공식을 개발함으로써 기존 국내외 경험식들보다 더 나은 결과를 제시하였다는 측면에서 가치가 있다고 판단된다.

Keywords

References

  1. Bae, D.H., Shim, J.B., and Yoon, S.S. (2012). "Development and Assesment of Flow Nomograph for the Real-time Flood Forecasting in Cheonggye Stream." Journal of Korea Water Resources Association, KWRA, Vol. 45, No. 11, pp. 1107-1119. https://doi.org/10.3741/JKWRA.2012.45.11.1107
  2. Clark, C.O. (1945). "Storage and The Unit Hydrograph." ASCE, Vol. 110. pp. 1419-1446.
  3. Graf, J.B., Garklavs, G., and Oberg, K.A. (1982). "A Technique for Estimating Time of Concentration and Storage Coefficient Values for Illinois Streams." U.S. Geological Survey, Water-Resources Investigations Report 82-22, p.10
  4. Jeong, S.W. (2005). "Development of Empirical Formulas for the Parameter Estimation of Clark's Watershed Flood Routing Model." Ph. D. dissertation, Korea University, p.152.
  5. Kim, Y.J. (2015). "Development of Concentration Time and Storage Coefficient Formula in Urban Stream Watersheds." Master Thesis, Sejong University, p. 114.
  6. Kirpich, Z.P. (1940). "Time of Concentration of Small Agricultural Watersheds." Civil Engineering, Vol. 10, No. 6, pp. 362-368.
  7. Linsley, R.K., Kohler, M.A., and Paulhus, I.L. (1975). Hydrology for Engineers, 2nd Edition, McGraw-Hill, New York, N.Y.
  8. Sabol, G.V. (1988). "Clark Unit Hydrograph and R-Parameter Estimation." Journal of Hydraulic Engineering, Vol. 114, No. 1, pp. 103-111. https://doi.org/10.1061/(ASCE)0733-9429(1988)114:1(103)
  9. Straub, T.D., Melching, C.S., and Kocher, K.E. (2000). "Equations for Estimating Clark Unit-Hydrograph Parameters for Small Rural Watersheds in Illinois." U.S. Geological Survey, Water-Resources Investigations Report 00-4184, p. 30.
  10. Viessman, W., Jr., Lewis, G.L., and Knapp, J.W. (1989). Introduction of Hydrology, 3rd Edition, New York, Harper and Row Publishers, p. 780.
  11. Yoon, T.H., Kim, S.T., and Park, J.W. (2005). "On Redefining of Parameters of Clark Model." Journal of Korean Society Civil Engineering, Vol. 25, No. 3, pp. 181-187.

Cited by

  1. Determination of Parameters for the Clark Model based on Observed Hydrological Data vol.18, pp.2, 2016, https://doi.org/10.17663/JWR.2016.18.2.121