特殊情况下雨水管道设计流量的确定方法

Method of calcualting the design flow rate of storm sewer in a special case

根据等流时线原理，用数值计算方法可求得上游管段流量过程线，并严用滞时叠加法合成下游断面流量过程线．该方法可以在汇水面积非均匀增长时获得较合理的雨水管渠设计流量．

Based on the isochronal method,the hydrographes of upper sewers can be calculated with numerical calculating method,and the hytrograph of lower sewer can be composed by lag time adding. The reasonable design flow rate of storm sewer canbe got with thus methodn nonlinear creasing of area.