摘要
研究目的:分析计算隧道各个分段的有害气体浓度,以把握公路隧道在自然通风状态下,其有害气体浓度在隧道内部的分布情况。研究方法:对于设有开孔的自然通风隧道,根据其隧道气流运动规律的研究成果,以工程实例计算正常工况下隧道各个分段的有害气体浓度;根据热压作用原理,探析交通阻塞工况下有害气体浓度的计算方法。研究结果:在正常工况和阻塞工况下,自然通风隧道的内部空气质量皆有明显的改善。研究结论:在顶部设有开孔的单向公路交通隧道中,自然通风可以控制隧道有害气体浓度在卫生标准的之内。
Research purposes： Under the condition of natural ventilation, this paper analyzes and calculates the harmful gas concentration in each subsection of tunnel. Research methods：For the natural ventilation tunnel without vents, according to research findings of laws of airflow motion within the tunnel and engineering case, this paper calculates the harmful gas concentration in each subsection of tunnel under the normal work conditions. According to hot pressure action principle, this paper also researches the cal- culation method for harmful gas concentration in the tunnel under the work conditions of traffic jam. Research results： Under the normal and jam -up work conditions, the air quality within the tunnel with natural ventilation is improved obviously. Research conclusions：In the one - way highway traffic tunnel with vents on the roof of tunnel, the natural ventilation can control the harmful gas concentration inside the tunnel within sanitary standards.
出处
《铁道工程学报》
EI
北大核心
2006年第9期44-49,共6页
Journal of Railway Engineering Society
关键词
交通风力
热压
自然通风
有害气体浓度
分布状况
控制标准
traffic wind force
hot pressure
natural ventilation
harmful gas concentration
distribution conditions
control standard
