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基于Abbott六点中心隐式差分格式的河道一维非恒定水流模型和平底宽顶堰堰流公式计算堤防溃口流量过程,构建了根据非结构网格的有限体积法离散的二维水动力模型,并模拟了堤围内洪水过程,计算了变电站站址处溃堤设计水位,采用水量平衡法验证了二维水动力模型的计算结果。实例结果表明,水动力模型可为堤围内变电站的设计提供可靠的技术支持,供借鉴。
Based on the Abbott six-point implicit difference scheme, the one-dimensional unsteady flow model of the river and the weir flow formula of the flat bottom wide weir were used to calculate the flow of the dyke and the two-dimensional hydrodynamic model was constructed based on the unstructured grid finite volume method. The flood process in embankment was simulated. The designed water level of embankment break at the substation site was calculated. The results of two-dimensional hydrodynamic model were verified by the water balance method. The results show that the hydrodynamic model can provide reliable technical support for the design of substation in embankment.