WUYun-hong,LIJun-qi,LINCong,et al.Field Test of Bottom Outflow Control Efficiency in Permeable Pavement with Underdrainage[J].China Water & Wastewater,2022,38(11):126-132.
Field Test of Bottom Outflow Control Efficiency in Permeable Pavement with Underdrainage
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第11期
Page:
126-132
Column:
Date of publication:
2022-06-01
- Keywords:
- permeable pavement with underdrainage; bottom outflow control; surface structure; antecedent dry period; rainfall return period
- Abstract:
- Five permeable pavements with different surface structures were built on the spot, the bottom outflow was monitored under rainfall events with two antecedent dry periods and seven rainfall return periods, and the effects of surface structure, antecedent dry period and rainfall return period on bottom outflow control efficiency were analyzed and quantified from the perspective of effective retention volume. Compared with the rainfall within the permeable pavement area, the bottom outflow volume reduction rate, peak reduction rate and peak delay of the permeable pavement with infiltration rate of more than 0.57 mm/s were in the range of 22%-100%, 41%-100% and 6-44 min respectively under the rainfall intensity of 18.0-241.8 mm/h and antecedent drying period of 0-2 days. Among the five kinds of permeable pavement, pervious concrete pavement had the best control efficiency of bottom outflow. The control efficiency of bottom outflow was negatively correlated with the rainfall return period, but positively correlated with the antecedent dry period. The control efficiency of bottom outflow decreased obviously first and then tended to be stable with the increase of rainfall return period.
Last Update:
2022-06-01