摘要
水文模型是洪水预报工作的关键理论依据。据此,以山西省绛河上游北张店水文站控制流域为研究对象,根据其数字高程模型(DEM)、降雨径流等资料,构建MIKE 11水动力模型HD与降雨径流模型NAM耦合模型,以洪峰流量、峰现时间、洪水过程线拟合情况及确定性系数为检验指标,通过对该流域进行场次的洪水模拟,优化调整适用于模拟区域的模型参数。结果表明,耦合的MIKE 11 HD-NAM模型在北张店流域洪水模拟中,率定期确定性系数达到0.7,验证期确定性系数达到0.68,总体精度较高,研究对于区域防灾减灾、雨洪资源利用具有重要现实意义。
Hydrological model is the key theoretical basis of flood forecast.The control basin of Beizhangdian Hydrological Station in the upper reaches of Jianghe River in Shanxi Province is analyzed as the research object,and MIKE 11 is constructed based on the coupling model of hydrodynamics model HD and rainfall runoff model Nam according to the data such as digital elevation model(DEM),rainfall runoff and so on.The flood peak discharge,peak time,fitting condition of flood hydrograph and certainty coefficient are used as test indexes to simulate the flood in the basin and optimize the model parameters applicable to the simulation area.The results show that the overall accuracy of the coupling MIKE 11 HD-Nam model in flood simulation of Beizhangdian Basin is high:the periodic deterministic coefficient of rate reaches 0.7,the deterministic coefficient of verification period reaches 0.68.The research has important practical significance for regional disaster prevention and mitigation,rain and flood resources utilization.
作者
牛亚男
NIU Ya-nan(Jiangxi Water Conservancy Investment Technology CO.,LTD.,Nanchang 330096,China)
出处
《浙江水利水电学院学报》
2021年第3期22-30,共9页
Journal of Zhejiang University of Water Resources and Electric Power
关键词
MIKE
11
一维水动力
洪水
小流域
MIKE 11
one dimensional hydrodynamic
flood
small watershed
