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本文论述了两部分内容:一、从实测雨洪资料利用数学上的正交三角化法通过电子计算机识别单位线。二、利用夹测小流域雨洪资料对现行几类线性流域汇流模型进行比较与分析,得出了流域汇流曲线概化得愈简单,洪峰流量偏小愈甚;降雨过程愈不均匀,推理法和一院二所法洪峰流量偏小愈甚等结论。分析了推理法计算的洪峰流量在北方干早地区偏小的原因。这些结论与数值试验和人工降雨概化流域模型汇流试验所得的结论完全一致。在此基础上提出了对推理公式结构形式的改进意见。
This article discusses two parts: First, identify the unit line from the measured rain-flood data using mathematical orthogonal orthogonal method through the computer. Secondly, using the clip-measured stormwater data from small river basins to compare and analyze the existing types of linear river basin convergence models, it is concluded that the simpler the generalization of the river basin convergence curve, the smaller the flood peak flow rate, the more uneven the rainfall process, and the inference method. And one hospital and two peaks of the law, the flow is too small and even more to the conclusion. The reason why the peak discharge calculated by the reasoning method is too small in the northern dry morning area is analyzed. These conclusions are completely consistent with the conclusions obtained from numerical experiments and artificial rainfall basing model convergence tests. Based on this, the suggestions for improvement of the structural form of the reasoning formula are proposed.