【摘要】 以某城市道路低影响开发雨水系统为例,研究了低影响开发系统的水量和水质控制效果。采用了同场次降雨对比分析方法,分别选取低影响开发道路A、B两监测点和传统道路C监测点进行对比监测。比较7场典型降雨下A、B、C监测点的数据表明:A、B监测点出流总量和出流污染负荷得到有效削减。平均径流出流总量削减率分别为64. 37%、54. 79%;平均径流出流污染物负荷(以SS计)削减率分别为90. 23%、70. 94%。因此,城市道路低影响开发雨水系统在雨水径流水量和水质控制方面效果显著。更多还原

【Abstract】 Controlling urban stormwater runoff quantity and quality becomes increasingly urgent for the severe urban inundation problem,and the high sensitivity of environmental receival waterbody to stromwater runoff pollution in China. In this paper,a low-impact development( LID) road system was taken as the study object to explore runoff quantity and quality control efficiency. Two monitoring sites,A and B on roads constructed based on low impact development concept,and a traditional road monitoring site C were selected for data collecting. The monitoring results of all sites under seven typical rainfall situations showed that the runoff outflow volume and outflow pollution load of site A and B were effectively reduced( by 64. 37% and54. 79%,for average stormwater runoff outflow volume; and by 90. 23% and 70. 94%,for average outflow pollution load,respectively). Therefore,the LID system has a significant efficiency on road runoff outflow quantity and quality controlling.This research could provide technical support for the sponge city construction work in China.更多还原