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软弱夹层围岩偏压高铁隧道施工技术研究

Northern Communications(2016)

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Abstract
断层、软弱围岩、偏压以及开挖断面大等因素影响高铁隧道围岩稳定性,给施工带来困难,通过建立FLAC3D模型,对含软弱断层的高铁隧道施工过程进行数值模拟,计算结果表明,夹层围岩对隧道围岩与支护结构受力影响显著,针对计算结果提出了5种围岩加固方案,研究结果表明对1倍洞宽范围内的上、下部夹层围岩进行加固是最经济适用的方法.
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