水科学进展2017，Vol.28Issue(5)：702-711,10.DOI:10.14042/j.cnki.32.1309.2017.05.007
生物滞留带结构层参数对道路径流滞蓄效应影响
Effects of bioretention structural layer parameters on detention and retention for road runoff
摘要
Abstract
Based on theoretical unsaturated soil water movement, the effects of different bioretention structural layer parameters on ponding, outflow, and runoff regulation were studied under four types of rainfall using a numerical sim-ulation method. Based on the results, ponding was significantly affected by the depth of the surface aquifer. With in-creasing depth from 20 cm to 30 cm, the overflow control water was increased by about 0. 196 m3 , while the ponding duration increased by up to 85 min. Bioretention structural layer parameters all had some influence on the outflow of the perforated pipe. As the soil layer to sand layer thickness ratio or the internal water storage zone height increased, the outflow of the perforated pipe was delayed and the peak of the flow decreased, while the increase in aquifer depth led to the advancement of the outflow time and increase in the flow peak. Under the four types of rainfall studied, the average runoff reduction rate of the five types of bioretention ranged from 16. 71% to 37. 31%, the average reduction rate of the runoff peak ranged from 41. 53% to 63. 90%, and the average runoff delay time ranged from 97. 75 min to 166. 50 min. In the case of overflow, the performance of bioretention methods on runoff regulation was significantly re-duced, and the effects of structural layer parameters on runoff regulation were weakened.关键词
生物滞留带/道路径流/结构层参数/径流调控/滞蓄效应Key words
bioretention/road runoff/structural layer parameters/runoff regulation/detention and retention分类
建筑与水利引用本文复制引用
高建平,潘俊奎,谢义昌..生物滞留带结构层参数对道路径流滞蓄效应影响[J].水科学进展,2017,28(5):702-711,10.基金项目
国家自然科学基金资助项目( 51378520) （ 51378520）
重庆市研究生科研创新项目( CYB16108) The study is financially supported by the National Natural Science Foundation of China ( No. 51378520) . （ CYB16108）
