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小汇水面积的雨洪计算,迄今还没有一个较为完整的方法,在缺乏水文实测资料的地区,一般习用合理化公式(Q=CIA)来推求设计洪峰流量,但是没有一个与之相适应的洪量和来水过程线配合,虽然有些学者或工程师曾经建议采用三角形、梯形、二项式曲线等洪峰形态来配水流量过程线,不过这种过程线终究带有很大的主观假定程度,一方面没有把流域自然特性(如流域形状、坡降、集流时间等)和暴雨特性(如雨型、产流历时
So far, there is not a complete method to calculate rainwater and flood of small catchment area. In the area lacking of hydrological data, it is generally used rational formula (Q = CIA) to calculate the design flood peak flow, but there is no corresponding flood volume And with the process line, although some scholars or engineers have suggested the use of triangular, trapezoidal, binomial curve peak shape to the water flow process line, but this process line after all, with a great degree of subjective assumptions, on the one hand there is no The natural characteristics of the basin (such as the basin shape, slope, flow of time, etc.) and storm characteristics (such as rainfall type, runoff time