二维水流数学模型区产流、汇流问题的探讨

Study on Runoff Yield and Flow Concentration in the Region of 2-D Flow Mathematical Model

目前,二维水流数学模型已得到普遍应用,但模型区的产流、汇流问题考虑较少。通过南水北调中线工程总干渠左岸串流区二维水流模拟计算,针对水面区和陆面区不同情况对模型区的产流、汇流问题进行了分析研究,在二维水动力学数学模型的基础上建立了串流区水文、水力学模型,提出了处理模型区产流、汇流问题的一套行之有效的方法。

The2-dimentions flow mathematical model is widely used now,but few people has studied the problem of runoff yield and flow concentration in the model region.Based on the simulative calculation of the2-dimentions flow,which occurred in the random flow area on left bank of the collecting channel of the Median-Line South-to-North Water Transfer Project,the problem of runoff yield and flow concentration in both water area and land area of the model region.On the basis of the2-dimentions hyd rodynamic mathematical model,the hydrologic mathematical model and the hydrodynamic mathematical model in the random flow area have been built,a series effective methods dealing with the problem of runoff yield and flow concentration were put forward.