论文部分内容阅读
为了实现屋面雨水利用系统量化评估中径流系数的精确取值,通过连续3年(2010—2012年)对河北省邯郸市不同屋面类型(屋面坡度和材料)及降雨特征(降雨深度和强度)的屋面径流进行实地监测,得到了各场实际降雨屋面径流系数的不同取值.研究结果表明,屋面径流系数的取值分布与各降雨事件的降雨深度相关性较强,其他影响因素对其影响较小.场次径流系数的取值与降雨深度呈显著的分段线性关系.根据1960—2008年的日降雨数据资料,计算得出邯郸市年均屋面径流系数可近似按照0.62这一常数进行取值.该研究成果可用于屋面雨水利用系统的量化评估及运行分析.
In order to achieve the accurate value of runoff coefficient in quantitative evaluation of roof rainwater utilization system, the paper analyzes the different roofing types (roof slope and material) and rainfall characteristics (rainfall depth and intensity) in Handan City of Hebei Province for three consecutive years (2010-2012) The results show that the value distribution of roof runoff coefficient is highly correlated with the rainfall depth of each rainfall event and the influence of other factors is more significant than that of other rainfall events The results showed that the runoff coefficient was significantly and piecewise linearly correlated with the rainfall depth.According to the daily rainfall data from 1960 to 2008, it was calculated that the annual average runoff coefficient of Handan could be approximated by the constant of 0.62 The research results can be used in the quantitative evaluation and operation analysis of roof rainwater utilization system.