| 核心土对软弱围岩隧道掌子面稳定性的影响 |
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| 引用本文： | 郭桃明,李德武,宋妍.核心土对软弱围岩隧道掌子面稳定性的影响[J].兰州铁道学院学报,2007,26(6):34-37. |
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| 作者姓名： | 郭桃明 李德武 宋妍 |
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| 作者单位： | 兰州交通大学土木工程学院 甘肃兰州730070 |
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| 摘 要： | 针对黄土地区山岭双线隧道软弱围岩稳定性较差的问题,通过三维有限元方法系统地分析了台阶长度及核心土长度、宽度对隧道掌子面的纵向位移、塑性区纵向深度和横向大小的影响.得出一些对黄土地区软弱围岩山岭双线隧道具有实际指导意义的结论.
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| 关 键 词： | 山岭隧道 台阶法 掌子面 核心土 |
| 文章编号： | 1001-4373（2007）06-0034-04 |
| 收稿时间： | 2007-07-03 |
| 修稿时间： | 2007年7月3日 |
Effect of Core Soil on Stability of Tunnel Working Face of Soft Rock Tunnel |
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| Guo Taoming,Li Dewu,Song Yan.Effect of Core Soil on Stability of Tunnel Working Face of Soft Rock Tunnel[J].Journal of Lanzhou Railway University,2007,26(6):34-37. |
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| Authors: | Guo Taoming Li Dewu Song Yan |
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| Abstract: | At long-term tunnel executive practice course,we have a basic viewpoint:so long as the tunnel face is stable,the tunnel is stable.Based on the bad stability property in the soft rock of two-way mountain tunnel in loess area and by means of the three-dimensional finite element method,the effect of the length of step and the length and the width of core soil on the longitudinal displacement of tunnel face,the plastic zone depth behind tunnel face and tunnel plastic area are analyzed.Some valuable conclusions for the soft rock of two-way mountain tunnel in loess area are drawn. |
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| Keywords: | mountain tunnel step method tunnel face core soil |
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