| 运用数值模拟探讨铁路瓦斯隧道分级标准 |
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| 引用本文： | 郑书星,罗武装.运用数值模拟探讨铁路瓦斯隧道分级标准[J].路基工程,2015,0(5):127-132. |
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| 作者姓名： | 郑书星 罗武装 |
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| 作者单位： | 中铁五局集团公司科技设计部, 长沙 410117 |
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| 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。
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| 关 键 词： | 铁路隧道 瓦斯 分级标准 数值模拟 |
| 收稿时间： | 2019-11-11 |
Discussion on Classification Criterion for Railway Tunnel with Gas by Numerical Simulation |
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| Abstract: | 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. |
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