【摘要】 为了解决半干旱半湿润山区无资料流域的洪水预报问题,将适用于半干旱半湿润地区产流特性的双超模型与适用于无资料地区汇流计算的地貌瞬时单位线(GIUH)进行耦合,建立双超-GIUH耦合模型。基于该耦合模型,对山西省王家会流域25场历史洪水进行模拟研究,其模拟结果在率定期与验证期的精度均达到了乙级,说明模型方法合理且适用性良好,可在半干旱半湿润地区的无资料流域进行推广应用。更多还原

【Abstract】 In order to analyze flash flood forecasting for ungauged basin in semi-dry and semi-humid region, the coupling model is made up of double-excess runoff generation model and GIUH runoff concentration model. Because the double-excess model can reflect the runoff yield process of semi-dry and semi-humid region and the calculation of GIUH can get rid of the dependence on hydrological data. The coupling model was used to simulate 25 historical representative rainfall events in the Wangjiahui watershed to verify the applicability of the coupling model. The results show that the simulation accuracy of this model is up to grade B in both calibration and validation periods. It indicates that the model is reasonable and of good applicability to be applied in similar semi-dry and semi-humid regions without gauging.更多还原