Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Numerical Analysis of the Sediment Pass-Through from the Sangju Weir and the Gumi Weir by using CCHE2D

CCHE2D모형을 이용한 보 상류에 퇴적된 토사의 배출 효과 분석 - 상주보와 구미보를 중심으로 -

  • Lee, Kyung Su (Department of Civil Engineering, Korea National University of Transportation) ;
  • Jang, Chang-Lae (Department of Civil Engineering, Korea National University of Transportation) ;
  • Son, Kwang Ik (Department of Civil Engineering, Yeongnam University) ;
  • Hwang, Man Ha (Korea Institute for Water and Environment, Korea Water Resources Corporation)
  • 이경수 (한국교통대학교 토목공학과) ;
  • 장창래 (한국교통대학교 토목공학과) ;
  • 손광익 (영남대학교 건설시스템공학과) ;
  • 황만하 (한국수자원공사 수자원연구원)
  • Received : 2013.09.23
  • Accepted : 2013.11.25
  • Published : 2013.11.30
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Abstract

In this study, sediment pass-through (SPT) from the Sangju Weir and Gumi Weir in the Nakdong River is analyzed numerically using CCHE2D. Sediment delivery is analyzed to predict the sediment discharge rate in the Sangju Weir and Gumi Weir. The sediment discharge from the Sanju Weir is 4,381 tons in the inflow of $3,857m^3/s$, which are 2 year frequency discharge, for 48 hours, and the sediment discharge is 2,766 tons in the inflow of $1,500m^3/s$. The maximum sediment delivery occurs in the immediate downstream of the weir. The sediment discharge from the Gumi Weir is 3,216 tons in the inflow of $5,400m^3/s$, which are 2 year frequency discharge, for 48 hours, and the sediment discharge is 73 tons in the inflow of $3,857m^3/s$. The maximum sediment delivery occurs in the weir. Therefore, the effectiveness of sediment delivery is high in the condition of the 2 year frequency discharge and the gate in the weirs fully are opened.

Keywords

Acknowledgement

Supported by : 국토교통부

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