一种阶梯式复合渗滤系统的设计及应用研究  

Design and Application of A Step-Type Composite Infiltration System

作　　者：屠书荣[1] 朱孟君[2] 曾嵩 袁庆洲 TU Shurong;ZHU Mengjun;ZENG Song;YUAN Qingzhou(Chongqing Jiaotong University,Chongqing 400074,China;China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430071,Hubei,China)

机构地区：[1]重庆交通大学,重庆400074 [2]中铁第四勘察设计院集团有限公司,湖北武汉430071

出　　处：《重庆交通大学学报（自然科学版）》2020年第5期103-107,129,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：中铁第四勘察设计院集团有限公司科研项目(2017K082-1);重庆市教委科学技术研究项目(KJQN201800738)。

摘　　要：为降低路面径流污染,同时满足边坡植被灌溉需要,设计了一种阶梯式复合渗滤系统。首先,对比分析了4种渗滤材料技术性能和经济性,筛选出煤渣及沸石2种性价比较高的多孔渗滤材料;其次,结合山区高速公路场地条件和路面径流污染防治要求,提出了一种由石英砂、煤渣、沸石及木屑等多孔材料组合的阶梯式复合渗滤系统,给出了复合渗滤层的最佳结构组合及设计厚度;最后,对该渗滤系统进行了仿真计算和类比分析。结果表明:阶梯式复合渗滤系统可有效去除路面径流中的颗粒物(SS)、COD和N、P等;经系统处理后的路面径流能达到地表水排放要求,可用于公路边坡植被灌溉;系统不易堵塞。In order to reduce the pavement runoff pollution and meet the needs of slope vegetation irrigation,a step-type composite infiltration system was designed. Firstly,the technical performance and economy of four kinds of percolation materials were compared and analyzed,and two kinds of porous percolation materials with high cost-effective,coal slag and zeolite,were screened out. Secondly,a step-type composite infiltration system composed of quartz sand,coal slag,zeolite and sawdust was proposed combined with the site conditions of mountainous expressway and the prevention requirements of pavement runoff pollution. And the optimum structure combination and design thickness of composite infiltration layer were put forward. Finally,the simulation calculation and analogy analysis of the proposed infiltration system were carried out. The results show that: the step-type composite infiltration system can effectively remove pollutants in pavement runoff such as particles( SS),COD and N,P. The pavement runoff treated by the proposed step-type composite infiltration system can meet the surface water discharge requirements,which can be used for vegetation irrigation on road slopes. Mover,the proposed step-type composite infiltration system is not easily blocked.

关 键 词：公路工程 路面径流 污染防治 阶梯式复合渗滤系统 

分 类 号：U491[交通运输工程—交通运输规划与管理]