Abstract：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 calculation 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.
钟星灿，曾臻. 自然通风公路隧道有害气体浓度分布[J]. 铁道工程学报, 2006, 23(9): 44-49.
ZHONG Xing-can, ZENG Zhen. Distribution of Harmful Gas Concentration in Highway Tunnel with Natural Ventilation. 铁道工程学报, 2006, 23(9): 44-49.
2006, Vol. 23 
版权所有 © 2014 《铁道工程学报》编辑部