库区平面二维水沙数学模型的研究与应用

Study and application of 2-D flow-sediment mathematical model for reservoir area

本文建立了库区平面二维水沙数学模型,应用有限体积法思想,增强了模型的适应性和灵活性。利用该模型对庙宫水库库区内的水流和泥沙冲淤进行分析研究,结果表明,模型能较好地模拟水库的河道水流泥沙运动及河床变形情况,将其应用于庙宫水库蓄水排沙预报的模拟计算中,通过综合对比,提出了水库现状泄流条件下最优清淤方案。

A 2-D flow-sediment mathematical model for reservoir area is established herein; for which the concept of finite volume method is applied, and then the adaptability and flexibility of the model are enhanced. With this model, the water flow and desilting within the area of Gongmiao Reservoir are studied. The result shows that the situations of both the sediment movement in river channel and the deformation of the river bed for the reservoir can be better simulated with the model. While applying this model to the simulation on the calculation of the prediction of the water storing and desilting, an optimal desilting scheme is put forward herein through the comprehensive comparison concerned.