透水混凝土路面对雨水径流的影响研究  

Study on Influences of Pervious Concrete Pavement on Rainwater Runoff

作　　者：徐行军 秦红星[2] 卓维松[1] XU Xingjun;QIN Hongxing;ZHUO Weisong(Fujian Chuanzheng Communications College,Fuzhou,Fujian 350007,China;College of Computer Science&Technology,Chongqing University of Posts&Telecommunications,Chongqing 400065,China)

机构地区：[1]福建船政交通职业学院,福建福州350007 [2]重庆邮电大学,重庆400065

出　　处：《公路工程》2019年第6期135-139,共5页Highway Engineering

基　　金：福建省交通运输科技项目(201936);福建省交通运输科技项目(201334);福建船政交通职业学院横向科技项目(205104H18001);福建省中青年教师教育科研项目(JA13415S)

摘　　要：基于“海绵城市”理念的透水路面能有效延迟地表径流的出现时间并降低径流总量,起到缓解城市洪涝灾害的作用。为了研究透水混凝土路面对雨水径流的影响,从透水混凝土路面渗水能力的理论研究入手,首先对透水路面的渗透系数进行了分析,然后以某新建道路为例,就透水混凝土路面对地表雨水径流的延迟时间和径流量削减情况进行试验研究。研究成果表明:第一,透水路面的渗透系数与混凝土有效空隙率(n e)的5.3961次方呈正比;第二,当降雨总量小于路面渗透能力时,雨量越大,路面对地表径流的延迟时间越长,削减效果也越好;当降雨量超过其渗透能力时,雨水只能以地表径流的形式排出道路系统;第三,降雨持续时间为30、60和120 min时,透水混凝土路面对地表径流总量的削减率分别超过60%、55%和40%,可见,透水混凝土对降低路面地表雨水径流总量具有显著的效果。Pervious pavement based on the concept of"sponge city"can effectively delay the occurrence of surface runoff and reduce the total amount of runoff,and play a role in mitigating urban floods.In order to study the influence of permeable concrete pavement on rainwater runoff,this paper starts with the theoretical study of permeability of permeable concrete pavement.Firstly,the permeability coefficient of permeable concrete pavement is analyzed.Then,taking a new road as an example,the delayed time of surface rainwater runoff and the reduction of runoff of permeable concrete pavement are experimentally studied.The results show that:firstly,the permeability coefficient of permeable pavement is proportional to the effective void fraction of concrete(n e)of 5.3961 power;Secondly,when the total rainfall is less than the permeability of the road surface,the greater the rainfall,the longer the delay time of the road surface runoff,the better the reduction effect;when the rainfall exceeds its permeability,the rainwater can only discharge the road system in the form of surface runoff.Thirdly,when the duration of rainfall is 30 minutes,60 minutes and 120 minutes,the reduction rates of total surface runoff by pervious concrete pavement are more than 62%,57%and 40%,respectively.It can be seen that pervious concrete has a significant effect on reducing total surface runoff.

关 键 词：透水混凝土 路面 渗透系数 地表径流 

分 类 号：U41[交通运输工程—道路与铁道工程]