| Title |
Numerical Analysis of the Sediment Pass-Through from the Sangju Weir and the Gumi Weir by using CCHE2D |
| Authors |
이경수 ( Kyung Su Lee ) ; 장창래 ( Chang Lae Jang ) ; 손광익 ( Kwang Ik Son ) ; 황만하 ( Man Ha Hwang ) |
| Keywords |
CCHE2D; River bed change; Sediment delivery; Sediment pass-throuh; Weir |
| 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 3,857 m³/s, which are 2 year frequency discharge, for 48 hours, and the sediment discharge is 2,766 tons in the inflow of 1,500 m³/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 5,400m³/s, which are 2 year frequency discharge, for 48 hours, and the sediment discharge is 73 tons in the inflow of 1,500m³/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. |