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本文对江都引江抽水站引江感潮河网的水流运动进行了分析研究,寻求适用于这类复杂河网水流运动的数值计算方法——直接差分法的Prissmann差分隐格式,并对河网的水流运动进行实际计算,提供了一条根据三江营潮汐预报进行江都抽水站进水池水(潮)位预报的有效途径,为泵站引江抽水的经济性运行决策提供了可靠的依据。同时,感潮河网非恒定流数值计算方法的成功,可以掌握全河网的水流运动变化规律,对于感潮河网上工程的规划、管理和河道整治等都具有较为重大的现实意义和经济价值。
In this paper, the water flow movement of the river diversion network at the Jiangdu River pumping station is analyzed and studied, and the Prissmann difference implicit scheme suitable for the flow movement of such complex river networks is sought. The actual calculation of the current water movement provides an effective way to forecast the water (tide) level of the water reservoir at Jiangdu pumping station according to the Sanjiang Ying tide forecast, which provides a reliable basis for the economic operation decision of the pumping station. At the same time, the success of the numerical method of unsteady flow in tidal river network can grasp the changing regularity of water flow in the whole river network, which is of great practical significance and economic value for the planning, management and river regulation of tidal river network project .