【摘要】 以晋江流域为研究区域,采用分布式HEC-HMS水文模型进行暴雨次洪模拟.分别通过SCS曲线数法计算水文损失,单位线法计算直接径流,Muskingum模型进行河道洪水演进,基流指数退水法模拟流域基流,并以1972-1979年的实测数据进行参数的率定及验证.研究结果表明:单峰的洪水模拟结果与实测数据拟合比较好,模型效率系数都在0.8以上,峰现误差为3h以内;多峰的洪水效率系数在0.6以下.更多还原

【Abstract】 Taking Jinjiang River Basin as a study area,the HEC-HMS distributed hydrological model was used in simulating rainfloods occurred in the basin.In the process of simulation,the hydrological loss was calculated by the SCS curve method,the direct run-off by the unit line method,the channel flowing by the Muskingum model and the basin baseflow by the way of exponential eecession mode.After calibration and validation on the basis of measured data during 1972 and 1979,it was found that,for uni-modal floods,the efficiency coefficients of the model were all great than 0.8 and the error time of peak flow was within 3 hours,showing a better performance in rainfloods simulation than for multi-modal floods,whose efficiency coefficients of the model were lower than 0.6.更多还原