黄河河口平原多闸坝河道水流数学模型

针对黄河下游河口平原区河流的特点,在充分考虑多闸坝及潮汐作用的影响下,采用MIKE11软件构建多闸坝河道水动力模型,同时利用实测资料进行参数率定及模型检验。结果表明:广利河河网下游水位变化趋势受上游来水流量的变化趋势影响较大,水流状况受人工调控明显;大部分典型断面的模拟结果较好,所确定的参数基本可以反映河道及流域特征。模型可以为下一步进行水量水质耦合模拟及河网库群与闸坝调度方案研究提供较为准确的水动力条件。

Mathematical model of flow in rivers with multiple sluices and dams in plain area in Yellow River Estuary

Based on the characteristics of the rivers in estuarine plain downstream of the Yellow River, the MIKE11 software was used to build the hydrodynamic model for rivers with multiple sluices and dams with consideration of the influences of multiple sluices and dams, and tides. The observed data were used to calibrate and verify the model. The results show that the trend of the water level downstream of the Guangli River was significantly influenced by the inflow from upstream, and the flow was obviously affected by artificial regulation. The simulation results for most of the typical cross sections were good, and the determined parameters for the most part reflected the characteristics of the rivers and basins. The model can provide an accurate hydrodynamic basis for further research on coupled simulation of water quantity and quality and the scheme for regulating reservoirs and sluices and dams in river networks.