考虑水土保持措施的分布式水文泥沙耦合模型研究

Coupled hydrological and silty model considering structural measures for soil conservation

基于栅格型DEM数据,提取数字水系和空间拓扑信息,建立了由水文模块和泥沙模块两部分组成的黄土高原多沙粗沙区小流域分布式水沙耦合模型。以黄河无定河水系岔巴沟流域为例,应用所建立的模型对该流域1970~1989年11场洪水进行了流量沙量过程模拟。结果表明,该模型具有一定的计算精度,一定程度证实了所研发模型的结构、参数和计算方法的合理性。

The digital stream network and spatial information were extracted from raster-based DEM data.The grid-based hydrological and silty model was developed on the basis of excess infiltration mechanism,considering the impact of structural measures for soil conservation on runoff routing.The model was implemented in the Chabagou watershed of the Wuding River that is a tributary of the Yellow River from 1970 through 1989.The results show that the developed distributed model is suitable for the small watershed in t...