OGFC面层在公路隧道防火中的作用  

Effect of porous asphalt pavementon highway tunnel fire protection

作　　者：杨良[1] 郭忠印[1] 杨学良[1] 王淑芳[2] 

机构地区：[1]同济大学道路工程教育部重点实验室,上海200092 [2]华东交通大学,南昌330013

出　　处：《安全与环境学报》2004年第4期83-87,共5页Journal of Safety and Environment

基　　金：交通部西部交通科技项目 ( 2 0 0 2 -3 18-0 0 0 -2 3 )

摘　　要：研究了 OGFC路面在隧道防火中的应用 ,并分析了其防火效果。 OGFC沥青混合料孔隙率高达 15 %～ 2 5 % ,可以把泄漏在 OGFC路面层的液体燃料迅速排入道路两侧边沟。本文对比分析了 OGFC/SMA/ AK三种沥青混合料的排油速率和饱油孔隙率。通过室内马歇尔试件的汽油燃烧试验和隧道内燃料泄漏模型的计算分析 。This article aims to introduce a new way on how to improve the tunnel fire protection through the analysis of the likely effect of the porous asphalt pavement. As is known, tunnel fire can be, and actually, is a great disaster. That is why more and more attention has been attached to the study of the tunnel fire safety both at home and in the world. In the highway engineering, the open graded frication course (short for OGFC), also known as porous asphalt mixture or drainage asphalt mixture. OGFC as an asphalt mixture may contain as high an air void content as 15 to 25 percent, which makes it easy for the leaking gasoline to permeate through the OGFC pavement and then soon get drained to the side gutters. This is beneficial for the passing vehicles through the tunnel. The oil permeating rate and oil saturating air void content of such asphalt mixtures (OGFC/SMA/AK) have been tested and determined through experiments. The higher the oil saturating air void content, the faster the oil permeating rate and the less likely chances for tunnel fires there may occur. Moreover, the laboratory gasoline burning tests on the marshal specimen and analyses of the simulation models of gasoline leakage on tunnel pavement demonstrate that porous asphalt pavement is effective for the tunnel fire protection.

关 键 词：道路与铁道工程 隧道防火 OGFC 渗透速率 饱油空隙率 汽油流淌长度 逃逸汽油量 

分 类 号：U416.2[交通运输工程—道路与铁道工程] X951[环境科学与工程—安全科学]