摘要
Based on the morphology of Luoshan-Hankou reach at the middle Yangtze River, the one-dimensional, unsteady flow and sediment transport numerical model was adopted to study the generalized cha nnel equilibrium profile. The variation of the longitudinal equilibrium profile, and the r elation with the condition of the inflow water and sediment from the upper reach were analyzed. Meanwhile, the numerical simulation results were compared with t he corresponding theoretical results. Finally, the equilibrium longitudinal slop e variations and its impact on flood control were analyzed after the sediment tr ansport process has changed.
Based on the morphology of Luoshan-Hankou reach at the middle Yangtze River, the one-dimensional, unsteady flow and sediment transport numerical model was adopted to study the generalized cha nnel equilibrium profile. The variation of the longitudinal equilibrium profile, and the r elation with the condition of the inflow water and sediment from the upper reach were analyzed. Meanwhile, the numerical simulation results were compared with t he corresponding theoretical results. Finally, the equilibrium longitudinal slop e variations and its impact on flood control were analyzed after the sediment tr ansport process has changed.
基金
Project supported by the National Natural Science Foundation of China (Grant No:59890200)
the Ministry of Water Resources of
