摘要
水文模拟对于流域防洪减灾、水资源规划管理有重要意义。基于Aster GDEM2提取紫荆关流域特征,并利用HEC-GeoHMS构建流域HEC-HMS模型。采用初损后损法、Clark单位线、马斯京根法和指数退水曲线法进行产汇流计算,模拟紫荆关流域1980~1988年16场次洪,其中前11场次洪用于率定,其余5场次洪作为验证。结果表明,HEC-HMS模型在紫荆关流域水文模拟中模拟效果较好,率定期的确定性系数在0.762~0.932之间,验证期的确定性系数在0.706~0.890之间,验证了该模型在我国半湿润地区大中流域应用的可行性。
Hydrological simulation plays an important role in flood control and disaster reduction,and water resources planning.The properties of Zijingguan watershed were extracted based on Aster GDEM2,and a HEC-HMS model was established with HEC-GeoHMS.The initial and constant,Clark unit hydrograph,Muskingum flood routing method and recession baseflow method were selected to calculate runoff.The simulation of 16 floods in Zijingguan watershed from 1980 to 1988 were carried out.The first 11 floods were used for calibration and the remaining 5 floods were used for validation.The results show that the HEC-HMS model has a good effect on the hydrological simulation of Zijingguan watershed.The deterministic coefficient is between 0.762 to 0.932 in calibration process,and between 0.706 to 0.890 in validation process.It is feasible to apply HEC-HMS model in large and medium-sized watershed in semi-humid areas in China.
出处
《水电能源科学》
北大核心
2017年第12期10-13,共4页
Water Resources and Power
