摘要
HEC-HMS(Hydrologic Engineering Center-Hydrologic Modeling System)模型是半分布式水文模型,NAM(Nedbør-Afstrømnings-Model)模型是集总式概念性模型,通过对两种模型计算原理和模型架构及参数组成进行对比,并选取滁河沙河集子流域的5场日径流进行模拟,通过模拟结果对两种模型在降雨径流模拟性能上进行比较研究。研究结果表明,两种模型均有较好的模拟效果,预报的径流深均在许可误差范围内。两种模型在降雨径流模拟过程中均存在一定的局限性,HEC-HMS模型计算功能强大,部分参数能直接反映流域的具体特性,但是其建模过程较繁琐,且内部的观测值难以进行检验,NAM建模过程简便,所需参数较少且物理意义明确,但是模型计算过程忽略了流域的空间变异及产流的空间分布。
The HEC-HMS model is a semi-distributed hydrological model,while the NAM model is a lumped conceptual model.The calculation principle,model architecture and parameter composition of the two models were compared,and the five daily runoff in the Shaheji sub-basin of Chuhe River basin were simulated.The simulation results were used to compare the rainfall runoff simulation performance of the two models.The results show that both models have good simulation results,and the predicted runoff depth is within the allowable error range.Both models have certain limitations in the rainfall and runoff simulation process.The HEC-HMS model has powerful computational function and some parameters can directly reflect the specific characteristics of the basin,but its modeling process is complicated and the internal observed values are difficult to be tested.The NAM modelling process is simple,requires fewer parameters and has clear physical meaning.However,the spatial variation and distribution of runoff producing are ignored in the model calculation process.
作者
陆海田
朱立煌
倪晋
LU Haitian;ZHU Lihuang;NI Jin(Anhui and Huihe River Institute of hydraulic Research,Key laboratory of Water Conservancy and Water Resources of Anhui Province,Hefei 230000;Tongling Water Conservancy Bureau,Tongling 244000)
出处
《中国防汛抗旱》
2023年第8期41-46,共6页
China Flood & Drought Management
基金
安徽省自然科学基金项目(2208085US04)。
