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A Study on Development of Estimation for Discharge Rate Reflecting Water Surface Slope

수면경사를 반영한 하천 유량산정에 관한 연구

  • 추태호 (부산대학교 건설융합학부) ;
  • 홍순헌 (부산대학교 건설융합학부) ;
  • 박상진 (부산대학교 건설융합학부) ;
  • 김영환 (부산대학교 건설융합학부)
  • Received : 2016.11.07
  • Accepted : 2017.02.14
  • Published : 2017.02.28

Abstract

There is a big difference of discharge rate between drought and flood period in Korea since the importance of water resources management has come to the fore. To know a river characteristics, it needs to estimate river discharge accurately. River discharge is calculated using the measured velocity of cross section and the estimated area of watercourse as input parameters into continuity equation. Generally, flow rate over a river is estimated from the relation equation between level and discharge, in this case, there are weakness for only the equal depths and the equal discharge estimated. In the present study, therefore, water surface slope was estimated using measured water level of Seongseo water level observation station and measured water level using ADVM at Gangchang Bridge. And then, we developed the discharge calculation equation using water surface slope. A method to easily calculated flow rate from the measured depth of the two points that are suggested by reflecting water surface slope because natural stream is unsteady flow, not uniform flow or not steady flow.

Keywords

ADVM;Unsteady flow;Stage station;Water surface;Estimation of river discharge

Acknowledgement

Supported by : K-Water 연구원

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