双超模型在东庄水文站控制流域洪水预报系统的应用

Application of double hypermodel in flood prediction system of Dongzhuang Hydrological Station

山西省东庄水文站控制流域地处半湿润半干旱地区,流域分南、北两支,流域洪水多为暴雨引发,但暴雨的分布不均匀,不同地区降水强度相差很大,径流形成机制较为复杂。文章收集了东庄水文站控制流域场次暴雨洪水资料,采用划分单元节点与双超模型相结合的预报方法,初步建立了控制流域洪水预报系统,并采用近年洪水进行了洪峰、洪量、峰现时间精度评定,取得了较好的效果。

The watershed controlled by Dongzhuang Hydrological Station in Shanxi Province is located in the semi-humid and semi-arid region.The watershed is divided into south and north branches.Most of the floods in the watershed are caused by heavy rain,but the distribution of heavy rain is not uniform,and the precipitation intensity varies greatly in different regions.In this paper,the rainstorm and flood data of dongzhuang hydrological station are collected,and the flood prediction system of the control basin is preliminarily established by combining the prediction method of divided unit node and double supermodel,and the accuracy of flood peak,flood volume and peak time is evaluated by the floods in recent years,and good results are obtained.