摘要
在前人成果的基础上,进行了提高新安江模型参数外推能力的研究工作。借鉴半分布式水文模型的汇流计算思路,利用数字高程模型提取流域特征、进而计算出流域的时段单位线,并据此修改新安江模型的汇流计算模块。选择资料条件较好的黑龙江省南岔站作为假定的无径流资料的目标站,利用灰色关联度分析方法确定其上游的带岭站为参证站,利用参证站率定新模型参数、参数移用到目标站后模拟多场次洪,并与目标站的实测径流数据做比较。结果表明,搭配新汇流结构的新安江模型,其参数在空间上具备一定的外推能力,相对于改进前的新安江模型,改进后的模型参数外推后在峰量、过程的拟合精度上有了明显改善。
Based on the results of previous research, we carry on a further research to improve the extrapolation ability of parameters of Xin＇anjiang Model. The convergence calculation formula is improved by watershed T-hour unit hydrograph calculated with topo- graphic structure extracted from DEM. The parameters calibrated by the hydrological reference basin chosen by the grey relational grade analysis method is used directly to simulate several flood of target area, then the measured runoff data are compared. The result shows that parameters of the improved Xin＇anjiang Model with new concentration structure can be transferred to a certain degree and it is better than the classical Xin＇anjiang Model in runoff simulation in ungauged basins.
出处
《中国农村水利水电》
北大核心
2016年第6期68-71,76,共5页
China Rural Water and Hydropower
基金
国家自然科学基金项目(41271042)
关键词
新安江模型
汇流结构改进
参数外推
无资料地区
Xin＇anjiang Model
concentration structure improvement
parameter extrapolation
ungauged basins
