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南水北调中线工程河北段460多km,共与大小河沟200多条相交,有不少河沟交叉断面设计洪水需要采用面积比法计算.为此,对海河流域部分河流实测降雨洪水资料做了分析,得出了不同时段洪量的面积指数范围,为南水北调中线工程设计提供了依据.
In the middle section of South-to-North Water Diversion Project, more than 460 km of Hebei section intersect with more than 200 large-scale river basins, and many of them have to be calculated by the area ratio method.Therefore, some measured rainfall and flood data of some rivers in the Haihe River Basin are analyzed Out of the area index range of flood volume in different periods, it provided the basis for the design of the midline of South-to-North Water Diversion Project.