本文以江苏省无锡市锡东新城雨水专项规划为例,对雨水计算方法进行了初步探讨,并对雨水设计过程中设计重现期、径流参数的选取标准进行了初步研究,因地制宜地对不同汇水区域选取相应的重现期及径流系数,使雨水管网在满足排水需求的同时又符合经济性的要求。 In this paper, a special case of rainwater in Wuxi Xidong New City in Jiangsu Province is taken as an example to conduct a preliminary study of rainwater calculation method. The selection criteria of design recurrence and runoff parameters in rainwater design are preliminarily studied. According to local conditions, Water area select the appropriate period of return and runoff coefficient, so that the rainwater pipe network to meet the drainage needs at the same time meet the economic requirements.