小流域坡面产流汇流模拟研究

根据山区流域雨水坡面产流、汇流及侵蚀特点，采用单元子流域的概化方法，把小流域概化为若干子流域，考虑流域降雨及下垫面条件的空间变化，建立了流域坡面产流、汇流模型，并得到了不同降雨历时的坡面流运动波模型的近似解。通过对坡面产流方式的分析，得到了坡面水力侵蚀区以“蓄满产流”为主，而重力侵蚀区以“超渗产流”为主的重要结论，对扩展山区小流域雨水集流利用具有重要意义。

Analog study on slope run-off and afflux of small basin

According to slops run-off and afflux of mountain area basin rain and eroded character, take use of general method of unit sub-flow, and devided small basin in to many subflows, and thought basin rainfall and space change of under cushion coat condition, and set up the model of slope run-off and afflux of basin, and obtained oppoximate value of the model of motive wave of slope flow in defferent rainfall period. By analysing the way of slope run-off, obtained important conclusion that storage run-off was main in the hydraulic erosion area and oversecping run-off in the gravity erosion area. It is important meaning that extended to tape use of small basin rain water flow together in mountain area.