绿色屋顶与下凹绿地串联对居住区径流削减效果分析  

ANALYSIS OF THE EFFECTS OF RUNOFF REDUCTION WITH GREEN ROOF AND SUNKEN LAWN APPLIED IN SERIES IN RESIDENTIAL AREA

作　　者：蔡家珍[1] 陈虹[2] 燕一波 黄宝华[1] 黄静 CAI Jiazhen;Chen Hong;Yan Yibo;Huang Baohua;Huang Jing(Zhangzhou Institute of Technology, Zhangzhou 363000, China;Zhangzhou City College ,Zhangzhou 363000, China)

机构地区：[1]漳州职业技术学院,漳州363000 [2]漳州城市职业学院,漳州363000

出　　处：《内蒙古农业大学学报（自然科学版）》2018年第2期83-87,共5页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：漳州市自然科学基金项目(ZZ2016JO5)

摘　　要：居住区具有建筑密度大,绿地率高的特点,绿色屋顶和下凹绿地利用蓄水空间能有效调控居住区雨水径流。以漳州市某居住区为研究区域构建雨水系统SWMM模型,通过改变绿色屋顶径流路径,模拟不同重现期绿色屋顶与下凹绿地各自排洪与串联使用对居住区的径流削减效果。结果表明,在降雨历时2 h重现期为2、a5 a、10 a、20 a的降雨条件下,绿色屋顶与下凹绿地各自排洪(绿色屋顶径流不接入下凹绿地)时,其径流总量削减率为37.3%~38.5%,峰值削减率为37.5%~43.2%。当串联使用(绿色屋顶径流接入下凹绿地)时,削峰减排效果更加明显,且对于低强度降雨,优势更为突出。Residential area has the characteristics of large building density and high green rate,green roof and sunken lawn can effectively control residential runoff. Based on the construction of the rainwater system model with SWMM,by changing the runoff path of green roof,the effect of green roof and sunken lawn on the residential runoff reduction during various return periods was simulated by studying a residential area in Zhangzhou city. The results showed that for the 2 h-rainfall whose return period is 2 a,5 a,10 a,20 a,when the green roof and sunken lawn discharged stormwater separately（ green roof runoff did not discharge into sunken lawn）,the total runoff was reduced by 37. 3%-38. 5% and the peak flow was reduced by 37. 5%-43. 2%. When applied in series（ green roof runoff discharged into sunken lawn）,the effect of runoff reduction is more obvious,and for low-intensity rainfall,the advantage is more prominent.

关 键 词：海绵城市 绿色屋顶 下凹绿地 SWMM 

分 类 号：TU992[建筑科学—市政工程]