西北江三角洲场次洪水的退水过程模拟

Flood recession process simulation of West River and North River delta

以珠江流域北江的三水水文站、海丰村水文站,西江的马口水文站3个站点5个洪水场次的水位数据为例,使用不同模型对其退水过程进行模拟分析,结果发现,对于海丰村水文站,可以用多项式模拟其退水过程,三水(二)、马口水文站,可以用正弦曲线模拟其退水过程。退水曲线最优拟合模型可以在洪水退水预报中应用。

Based on the water level data of 5 times of floods measured by three hydrological stations in Pearl River basin including Sanshui Hydrological Station and Haifengcun Hydrological Station on North River and Makou Hy⁃drological Station on West River,different models were adopted to simulate the flood recession process.The results of simulation demonstrate the flood recession process at Haifengcun station can be simulated by polynomial simula⁃tion;the flood recession process at Sanshui(II)station and Makou station can be simulated by sine curve.The reces⁃sion curve optimum fitting model can be used for flood recession forecasting.