南水北调中线受水区分布式水文模型子流域划分研究

Subbasin Delineation for the Service Areas of South-to-North Water Diversion Project

从空间尺度上对分布式水文模拟进行了分类,提出了区域分布式水文模拟的概念。根据区域分布式水文模拟的特点,提出了针对不完整流域进行分布式水文模拟时,研究范围的确定原则。同时通过引入流域入口点,实现了一种基于Pfafstetter编码规则的区域分布式水文模型子流域划分方法,并成功应用到南水北调中线受水区。另外,在该方法中还包括了对狭长子流域的进一步自动细分及根据水文站、水库位置进一步细分子流域的功能。

The paper classified distributed hydrological model from spatial scale, put forward the concept of regional distributed hydrological simulation. According to the characteristic of regional hydrological simulation, the author proposed the method of research scope determination principle in view of hydrological simulation at incomplete river basin. Meanwhile, through introducing watershed inlet, realized a sub-basin delineation method in regional hydrological model based on modified Pfafstetter coding rules. The method also includes the function of further automatic subdivision on the long and narrow sub basins as well as further segmentation according to hydrologic station and reservoir location. Finally this method was successfully applied in the service areas of South to North Water Diversion Project.