论文部分内容阅读
为解决中小水库入库预报问题,基于VIC模型产流原理和地貌单位线汇流方法,构建了中小水库入库预报模型。其中,VIC模型产流参数基于流域气候、地形地貌、土壤等数据以及VIC模型水文参数全国网格化公式确定;地貌单位线汇流参数基于高分辨率数字高程模型提取的数字化水系获取。实例应用表明,所提出的方法适用于中小水库入库预报,预报的流量过程和入库水量均具有较高的精度;预报误差主要源于网格参数的移用、地貌单位线流速的确定、雨量站代表性的不足。
In order to solve the problem of reservoir inlets and reservoirs, a model of reservoir inlets and reservoirs for medium and small reservoirs was constructed based on the runout principle of VIC model and the method of confluence of geomorphic units. Among them, the runoff parameters of VIC model were determined based on the data of basin climate, topography, soil and so on, as well as the national gridding formula of VIC model hydrological parameters. The unit hydrograph parameters were obtained based on the digitalized water system extracted from high resolution digital elevation model. The application of the example shows that the proposed method is suitable for the forecasting of small and medium reservoirs, and the forecasting flow and the amount of water in the reservoirs all have high precision. The forecast errors mainly come from the use of grid parameters, Rainfall representative of the lack of stations.