连续时序降雨量法在雨水调蓄池设计中的应用

Application of Continuous Rainfall Time-series to Design of Rainwater Detention Tank

针对雨水调蓄池有效容积的传统计算方法存在的不足,提出了一种基于连续时序降雨量的新计算方法,该方法以区域实际降雨情况为依据,通过对调蓄池周期性工作过程的模拟,确定调蓄池降雨截流率拟合曲线及模拟方程,并根据雨水截流率目标确定调蓄池的容积。将该方法应用于昆明市主城区东南片两座雨水调蓄池的设计中,结果表明,由该方法确定的调蓄池有效容积能够达到相关去除效果的要求。

To address the deficiency in the traditional calculation method of effective volume of rainwater detention tank, a new calculation method based on continuous rainfall time-series was put for- ward. Based on the regional specific rainfall condition, this method simulates the periodic process of rain- water detention tank to determine the fitting curve and simulation equation of the rainfall interception ratio. The volume of rainwater detention tank could be calculated according to the object of the rainfall intercep- tion. The method was used for the design of rainwater detention tanks at the southeast of main urban area of Kunming. The results showed that determining the effective volume of rainwater detention tank by this method could bring relevant removal efficiencies to above minimum requirements.