摘要
应用HEC-RAS和MIKE11模型,对成都市锦江流域的南河和磨底河进行了模拟分析。结果表明:同一模型不同计算方法时,恒定流和非恒定流计算结果差值较小;不同模型同一计算方法时,计算差值较大;在同一小流量下,HEC-RAS计算的磨底河水位比MIKE11的高;在同一大流量下,HEC-RAS计算的南河水位比MIKE11的低。非恒定流在模拟水流运动状态时,计算结果相对更加精准;建议锦江干流如府河、南河选用MIKE11计算水位,锦江支流如磨底河、浣花溪、沙河、桃花江等选用HEC-RAS计算水位。
In this paper, HEC-RAS and MIKE11 models are used to calculate the water surface line of the Nanhe and Modihe Rivers in Jinjiang basin. The results show as follows: Using the same model with different methods, the difference between constant flow and unsteady flow is small;Using different model with the same method, the difference is large;At the same low flow rate, the water surface line of Modihe River calculated by HEC-RAS is higher than MIKE11;At the same high flow rate, the water surface line of Nanhe River calculated by HEC-RAS is lower than MIKE11;The results of unsteady flow are more accurate simulating the flow movement. Calculating the water surface line of Jinjiang main stream, MIKE11 model is recommended;Calculating the water surface line of other tributaries like Modihe, Huanhuaxi, Shahe, and Taohuajiang Rivers, HEC-RAS model is recommended.
出处
《水资源研究》
2023年第1期58-64,共7页
Journal of Water Resources Research
