摘要
以陕西省西咸新区沣西新城核心区西部排水区为研究对象,使用暴雨管理模型SWMM软件建立其雨洪模型,在3种降雨事件下模拟研究区排放口水量和水质变化过程,再分别添加雨水花园和渗渠措施,模拟在LID措施调控下的水量水质状况。结果表明:雨水花园和渗渠都对水量和污染物的峰值与总量有较好的削减效果,但削减率都随着降雨强度的增大而减小,其中降雨强度对雨水花园的影响较明显。在相同重现期下,雨水花园对水量和水质的总量的削减效果较渗渠要好,而渗渠对水量和水质的峰值的削减效果则优于雨水花园。综合考虑两个LID措施的处理特点,建议在新区后期建设中结合使用,以控制和改善由降雨产生的径流和污染物问题。
Taking west drainage system of central area in Fengxi New City which locates in Xixian New Area, Shaanxi Province as the research object, the SWMM software was used to set up the stormwa- ter model for the research area. The variation in stormwater quantity and quality at the research area out- let under three rainfall events were simulated, and the stormwater quantity and quality under the LID measures of adding rain garden and infiltration ditch respectively were simulated. The results showed that rain garden and infiltration ditch could effectively reduce stormwater quantity and peak and total amount of pollutants, but the reduction rate decreased with the increase in rainfall intensity. Moreover, the rain-fall intensity had obvious effect on the rain garden. In the same return period, rain garden was more effective than infiltration ditch in reduction of total stormwater quantity and quality, while infiltration ditch was better than rain garden in the reduction of stormwater quantity and quality peak. Considering the advantages of the LID measures, they should be used in the new city construction in the future to control and improve runoff and pollutant problems produced by rainfall.
出处
《中国给水排水》
CAS
CSCD
北大核心
2016年第11期141-146,共6页
China Water & Wastewater
基金
陕西省西咸新区沣西新城雨水净化与利用技术研究与应用示范项目(2012610001004149)
国家自然科学基金资助项目(51279158)
关键词
西咸新区
SWMM
雨水花园
渗渠
Xixian New Area
SWMM
rain garden
infiltration ditch
