| 非对称小净距隧道施工力学特性研究及方案优化 |
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| 引用本文： | 张志强,黄朱林,韩飞.非对称小净距隧道施工力学特性研究及方案优化[J].现代隧道技术,2007,44(6):22-26. |
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| 作者姓名： | 张志强 黄朱林 韩飞 |
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| 作者单位： | 西南交通大学隧道与地下工程系,成都,610031 |
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| 摘 要： | 非对称小净距隧道合理的开挖顺序对隧道围岩稳定和支护措施优化有很大的影响。文章结合净距2.0 m非对称公路隧道工程实践,通过二维弹塑性有限元数值仿真模拟,研究分析了隧道开挖顺序对支护力学行为特性及围岩稳定性的影响,得出了先开挖较小断面隧道优于先开挖较大断面隧道的结论,为非对称小净距隧道优化设计和施工提供了科学依据。
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| 关 键 词： | 小净距隧道 数值模拟 力学特性 优化 |
| 文章编号： | 1009-6582(2007)06-0022-05 |
Study on mechanical characteristics and procedure optimization for the construction of unsymmetrical tunnels with close proximity |
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| Zhang Zhiqiang,Huang Zhulin,Han Fei.Study on mechanical characteristics and procedure optimization for the construction of unsymmetrical tunnels with close proximity[J].Modern Tunnelling Technology,2007,44(6):22-26. |
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| Authors: | Zhang Zhiqiang Huang Zhulin Han Fei |
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| Abstract: | Reasonable excavation procedure for closely spaced unsymmetrical tunnels in soft ground will greatly affect the stability of surrounding rocks and support optimization.Based on tunnel engineering practice with clear distance of 2.0 m,the influence of excavation procedure on the mechanical behavior and the stability of surrounding rock mass were studied by 2D elastic-plastic finite numerical simulation.Conclusion indicated that excavating the tunnel with smaller cross-sectional area should be earlier than the tunnel with larger cross-sectional area. |
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| Keywords: | Tunnels with close proximity Numerical simulation Mechanical characteristics Optimization |
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