摘要
通过有限元软件Fluent对单、双线瓦斯隧道通风进行数值模拟,结合十年间通风能力的提高,得出现行《铁路瓦斯隧道技术规范》中高、低瓦斯隧道的分界值偏于安全。建议将瓦斯绝对涌出量q0=1.0 m3/min作为单线铁路高、低瓦斯隧道分界值;建议将瓦斯绝对涌出量q0=2.0m3/min作为双线铁路高、低瓦斯隧道分界值。
With Fluent, a FEM software, the ventilation at single-/double-track tunnel with gas was studied by numerical simulation. With regard to the improvement of the ventilation capacity in a decade, it was found that the cut off value for the tunnels with high and low gas content specified in the current Technical Code for Railway Tunnel with Gas was rather safe. It is suggested that the absolute gas emission rate, q0 = 1.0 m3/min, may be taken as the cut off value for single-track tunnel with high and low gas content, and the absolute gas emission rate, q0 = 2. 0 m3/min as that for the double-track.
出处
《路基工程》
2015年第5期127-132,共6页
Subgrade Engineering
关键词
铁路隧道
瓦斯
分级标准
数值模拟
railway tunnel
gas
classification criterion
numerical simulation
