Abstract：Abstract :Research purposes： Tunnel；ling in a potential gas outburst section exhibits high safety risk. The determination method of safe rock thickness has become a key technical issue to avoid construction risk and improve construction efficiency. At present，the determination of safe rock thickness mostly depends on experience with more randomness，so
it should be further studied and improved combining geotechnical theory with construction practice.
Research conclusions ：( 1) According to the theoretical geotechnical analysis，numerical simulation research for similar
projects， and combining the gas outburst prevention practice in existing tunnels， a simple calculation method of
minimum safe rock thickness for preventing gas outburst is proposed. The method is proposed by taking gas pressure and
engineering geological conditions as the representative indexes. (2) By using several typical engineering examples，the
feasibility of the calculation method is verified. (3 ) The research results will play a direct guiding role in ensuring the
tunnel construction safety and improving the construction progress in potential gas outburst zones， which can provide
important reference for scientific determining the safety rock thickness in potential gas outburst zones.
谢衔光,苟德强,陈成军. 瓦斯突出隧道防突安全岩盘厚度计算方法研究[J]. 铁道工程学报, 2017, 34(3): 53-57.
XIEXian - guang，GOU De - qiang，CHEN Cheng – jun. Calculation and Verification of Safety Rock Thickness for Preventing Gas Outburst in Tunnelling. Journal of Railway Engineering Society, 2017, 34(3): 53-57.
2017, Vol. 34 
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