摘要
文章针对隧道通风需风量的两种计算指标:烟雾浓度指标和CO浓度指标,论述了不同坡度下的柴油车比例对于指标选取的影响,提出了无量纲需风量和临界柴油车比例的概念,研究分析了在设计工况、怠速工况、阻塞工况三种情况下坡度对无量纲需风量和临界柴油车比例的影响,得出需风量计算指标随行车速度、坡度和柴油车比例的变化规律。
The percentage of diesel vehicles plays an important role in the calculation of required air volume for the ventilation of a road tunnel. Based on the new concept of dimensionless ventilation volume and critical percentage of diesel vehicles, the impact of vehicle speeds and road slopes on the dimensionless ventilation volumes and critical diesel vehicle percentages are studied, and the criteria to determine ventilation volumes according to the variation of vehicle speeds, slopes of road and diesel vehicle percentages is found out.
出处
《现代隧道技术》
EI
北大核心
2005年第6期76-80,共5页
Modern Tunnelling Technology
关键词
隧道通风
需风量计算指标
计算方法
Tunnel ventilation
Criteria of required air volume
Method of computation
