Flushing sediment through reservoirs

摘要: The control of reservoir sedimentation through hydraulic flushing has been employed in several parts the world to sustain useful storage capacity reservoirs. However, no comprehensive analysis conducted understand sediment processes. In this study, laboratory experiments were performed investigate processes during drawdown flushing, including outflow discharge, characteristics channel and effectiveness. From both field data, it is found that discharge can be well related a hydrauic parameter which function outlet water-surface gradient width. It also efficiency increases dramatically when retrogressive erosion emerges. A geomorphic relationship used estimate equilibrium width channel. 1-D diffusion model presented herein only simulate general trend bed profile evolution an...