大坡度透水沥青路面-生物滞留带径流控制试验研究
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摘要
为研究大坡度透水沥青路面-生物滞留带径流控制效果,通过人工控制降雨条件,更换路面材料等方式,模拟纵坡5%、横坡2.5%坡度条件下1 h内普通沥青路面/透水沥青路面及其与生物滞留带联用条件下的产汇流过程,监测流量并进行对比分析。试验结果显示:降雨重现期为1～20年内,所铺设的透水路面径流总量削减率可达71%～93%,联用滞留带后的总量削减率为81%～93%;联用滞留带后的峰值削减率为75%～95%,削峰效果明显。透水路面的径流系数为0.07～0.29,联用滞留带之后则为0.07～0.19。透水路面雨水口的雨水收集率为0.06～0.13,联用滞留带后可减少82%～95%的雨水口入流总量。针对道路坡度的特殊性,可在道路面层下设置排水边沟及排水横篦,以提升径流削减控制效率。
For studying the runoff flow control effect with steep slope permeable asphalt pavement and biological retention facility, the research simulated runoff confluence process with different situations in 1 hour by controlling rainfall conditions and changing road materials under special slope(longitudinal slope 5%; cross slope 2.5%), monitored and analyzed the flow. The result shows: when rainfall recurrence period changes from 1-20 a, the reduction rate of permeable road runoff could achieve 71%-93%, and 81%-93% after combining with biological retention facility; the total reduction rate of road peak runoff could achieve 75%-95% after combining with bio-retention, that testify obvious peak reduction effect. The runoff coefficient of permeable asphalt could achieve 0.07-0.29; and 0.07-0.19 after combining with bio-retention. The rainwater collecting ratio of permeable asphalt gutter inlet could achieve 0.06-0.13, and bio-retention could reduce the total inlet flow of 82%-95%. For the specialty of road slope, it should set up drainage ditches and transverse drainage grateunder the road surface to enhance the runoff reduction efficiency.
For studying the runoff flow control effect with steep slope permeable asphalt pavement and biological retention facility, the research simulated runoff confluence process with different situations in 1 hour by controlling rainfall conditions and changing road materials under special slope(longitudinal slope 5%; cross slope 2.5%), monitored and analyzed the flow. The result shows: when rainfall recurrence period changes from 1-20 a, the reduction rate of permeable road runoff could achieve 71%-93%, and 81%-93% after combining with biological retention facility; the total reduction rate of road peak runoff could achieve 75%-95% after combining with bio-retention, that testify obvious peak reduction effect. The runoff coefficient of permeable asphalt could achieve 0.07-0.29; and 0.07-0.19 after combining with bio-retention. The rainwater collecting ratio of permeable asphalt gutter inlet could achieve 0.06-0.13, and bio-retention could reduce the total inlet flow of 82%-95%. For the specialty of road slope, it should set up drainage ditches and transverse drainage grateunder the road surface to enhance the runoff reduction efficiency.
引文
1 何卫华,车伍,杨正,等.城市绿色道路及雨洪控制利用策略研究.给水排水,2012,48(9):42～47
2 Bean E Z,Hunt W F,Bidelspach D A. Evaluation of four permeable pavement sites in Eastern North Carolina for runoff reduction and water quality impacts. Journal of Irrigation and Drainage Engineering,2007,133(6):583～592
3 Kelly A, Collins, S.M.ASCE, et al.Hunt,P E M ASCEZ,Jon M. Hathaway: Hydrologic Comparison of Four Types of Permeable Pavement and Standard AsphaltIn Eastern North Carolina. JOURNAL OF HYDROLOGIC ENGINEERING ASCE/DECEMBER, 2008
4 Steffen J R. Bioretetion Hydrologic Performance in a Semiarid Climate. University of Utah, 2012
5 许萍,司帅,张建强,等. 深圳光明新区透水沥青道路与滞留带对径流水质水量控制效果研究. 给水排水,2015,51(11):64～69
6 DG/TJ08-2074-2016道路排水性沥青路面技术规程
2 Bean E Z,Hunt W F,Bidelspach D A. Evaluation of four permeable pavement sites in Eastern North Carolina for runoff reduction and water quality impacts. Journal of Irrigation and Drainage Engineering,2007,133(6):583～592
3 Kelly A, Collins, S.M.ASCE, et al.Hunt,P E M ASCEZ,Jon M. Hathaway: Hydrologic Comparison of Four Types of Permeable Pavement and Standard AsphaltIn Eastern North Carolina. JOURNAL OF HYDROLOGIC ENGINEERING ASCE/DECEMBER, 2008
4 Steffen J R. Bioretetion Hydrologic Performance in a Semiarid Climate. University of Utah, 2012
5 许萍,司帅,张建强,等. 深圳光明新区透水沥青道路与滞留带对径流水质水量控制效果研究. 给水排水,2015,51(11):64～69
6 DG/TJ08-2074-2016道路排水性沥青路面技术规程