Development and application of hydrodynamic model in the main reach of Huaihe River from Zhengyangguan to Wujiadu

In order to investigate the flood discharge capacity,river regulation project and flood operation mode in the main reach of Huaihe River from Zhengyangguan to Wujiadu,a hydrodynamic numerical model was developed to simulate the flood routing based on the characteristics of this reach.This model is verified by the measured flood data in the year of 2005 and 2007.The verification results show that the model is accurate and provides a computing platform for the comprehensive treatment and optimal dispatching in flood detention areas of the main reach from Zhengyangguan to Wujiadu.The effect of the Jingshanhu flood detention area during the flood process in 2007 was analyzed by using this model.The computed results show that the use of the Jingshanhu flood detention area can reduce the water level at Tianjia an station and increase the concentration velocity of the flood.