| Title |
Analysis of Discharge Characteristics for a Control Gate in a River |
| Keywords |
control gate;discharge patterns;discharge classification index;discharge coefficients;조절수문;방류형태;방류형태 분류기준;유출계수 |
| Abstract |
Analysis of discharge characteristics through control gates at river crossing structures is important for an effective water level control and water resources management. In recent years, many river control structures in four major rivers are under construction but only few researches on discharge characteristics at control gates could be found in Korea. The discharge characteristics depend on both shape of control gates and the effects of downstream water-depth. In this research, classification index for discharge patterns (free weir, submerged weir, free orifice, submerged orifice) through a control gate were reviewed with h<SUB>g</SUB>/h₁, h₃/h<SUB>g</SUB>, and h₃/h₁. Classification criteria of discharge patterns were also suggested. Representative discharge estimation equations for each discharge patterns were adopted and discharge coefficients were developed from a hydraulic model for a specific control gate which will be constructed in Nakdong river. Reliability of the derived discharge equation and coefficients were confirmed by comparisons between the real discharge in a model and the predicted discharge from the results of this research. |