以公路路界地表径流特征分析为基础,讨论了推理公式法作为公路排水设计径流量计算方法的适用性,明确了汇流历时和降雨历时二者之间的关系,引入了修正系数对降雨历时进行计算,通过对比表明这种计算方法是合理的。%Based on the analysis of surface runoff characteristics in highway region,the applicability of the rational formula method as computational method for design runoff amount is discussed,the relationship between runoff concentration duration and rainfall duration is clearly demonstrated,a correction factor is introduced in the calculation of rainfall duration,and it is shown that the new method is reasonable.
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