| 铁路隧道软弱围岩水平岩层施工技术 |
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| 引用本文： | 孥文广.铁路隧道软弱围岩水平岩层施工技术[J].铁道建筑技术,2011(11):18-21. |
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| 作者姓名： | 孥文广 |
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| 作者单位： | 中国铁建二十局集团第三工程有限公司,重庆,401121 |
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| 摘 要： | 结合黄韩侯铁路北塬隧道左线进口软弱围岩水平岩层施工，通过对隧道水平岩层的稳定性分析，并针对水平岩层对隧道开挖和支护的影响作用，确定水平岩层隧道施工开挖方案，采取负视速度法超前地质预报手段及时获取围岩情况，并对开挖爆破参数和支护参数等及时进行优化，确保了隧道的施工安全。
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| 关 键 词： | 隧道 软弱围岩 水平岩层 施工技术 |
Construction Technology of Railway Tunnels with Soft Surrounding Rock and Horizontal Stratum |
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| Li Wenguang.Construction Technology of Railway Tunnels with Soft Surrounding Rock and Horizontal Stratum[J].Railway Construction Technology,2011(11):18-21. |
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| Authors: | Li Wenguang |
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| Institution: | Li Wenguang (China Railway 20th Bureau Group Co.Ltd.,Chongqing 401121,China) |
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| Abstract: | Combining with construction techniques for left-line portal section of Beiyuan tunnel on Huanghanhou railway with soft surrounding rock and horizontal stratum, the paper analyzes the stability of horizontal stratum and its influence on excavation and support construction, and proposes an excavation construction scheme for tunnel with horizontal stratum. With the application of negative visual velocity seismic reflection method to the geological prediction, construction safety is ensured by optimizing parameters for excavation blasting and support. The construction experience can be referenced for the similar construction of railway tunnels. |
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| Keywords: | tunnel soft surrounding rock horizontal stratum construction technology |
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