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yan an dong lu sui dao sh 1 xing guang tou guo lv ji de kai fa he yan zhi
Author(s): 
Pages: 35-37
Year: Issue:  4
Journal: Underground Engineering and Tunnels

Keyword:  光透过率隧道柴油车烟雾浓度舒适度六十年代严重影响二氧化硫行车安全光通量;
Abstract: <正> 前言六十年代以来,柴油车数量不断增加,柴油车在隧道内行驶时放出的CO气体量极少,仅为汽油车的十分之一至百分之一。与此同时,却放出大量烟雾和具有刺激性臭味的甲醛和二氧化硫等气体,严重影响行车安全可见视距和舒适度。因此,七十年代隧道内烟雾污染危害性被世界各国所重视并研究其对策。国产柴油车的现状是吨位重,排烟量大而且浓度高。即使是汽油载重车和超载公共汽车爬坡时亦会因发动机性能差而放出大量烟雾,致使隧道内往往CO浓度尚未到达容许卫生标准而烟雾已使隧道内安全可见视距和舒适度大大降低。因此,隧
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