江都抽水站引江感潮河网水流运动计算的研究

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。

Studies on the Computation of the Water Flow in Tidal Channel

Base on the study of prediction of the tidal level of the San jiangyin gaging station and the analising of the water flowing into the Yantze River from the Huai River, and by the means of Preissmann implicit scheme of finite-difference method in computing the unsteady flow in the tidal channel which links the Yantze Rive with the Jiangdu Pump Station, an useful method of predicting the water stages (subject to tidal effect) before the pump station is provided in this paper. This is useful not only to the studies of the ecnomical running of the pump station by the tidal channel, but also to the design and management of the hydraulic projects on tidal channels.