东南大学学报（自然科学版）2016，Vol.46Issue(6)：1308-1312,5.DOI:10.3969/j.issn.1001-0505.2016.06.033
雨水花园过滤系统的渗透性能试验研究
Experimental study of permeability in rainwater garden filtration system
摘要
Abstract
To investigate the filtration process in the rainwater garden filtration system and study the monitoring parameters to evaluate the infiltration process,the hydraulic residence time distribution density curves under different hydraulic loads were obtained by using the pulse tracer tests.The hy-draulic efficiency was calculated according to the relationship between the nominal hydraulic resi-dence time and the peak hydraulic retention time.The relationship of the hydraulic load and the per-meability coefficient was obtained by using the infiltration characteristic tests.The results show that there is the non-uniform flow field distribution in the rainwater garden.When the hydraulic load is 1 .0 m3/(m2 ·d),the effective volume proportion of the packing layer for removing pollutants is the largest and the hydraulic efficiency is the highest.The seepage flow in the submerged area is closer to the push flow.The permeability coefficient has the inverse relationship with the hydraulic efficien-cy,and the nonlinear relationship with hydraulic load.The 4-phase assumption of the filtration process is verified by the experimental results of the pulse tracer tests and the infiltration characteristic tests.关键词
雨水花园/渗透性能/脉冲示踪试验/饱和渗流Key words
rainwater garden/permeability/pulse tracer tests/saturated flow分类
建筑与水利引用本文复制引用
王亚军,张弘,韦昆..雨水花园过滤系统的渗透性能试验研究[J].东南大学学报（自然科学版）,2016,46(6):1308-1312,5.基金项目
“十二五”国家科技支撑计划重大资助项目（2015BAL02B05）、江苏省重点研发计划资助项目（BE2015356-2）、江苏高校优势学科建设工程资助项目（CE02-1-1）、甘肃省高等学校科研资助项目（2014B-110）． （）
