| 大断面隧道地层超前预加固及开挖支护过程稳定性的数值模拟 |
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| 引用本文： | 周捷,漆泰岳,旷文涛,李斌. 大断面隧道地层超前预加固及开挖支护过程稳定性的数值模拟[J]. 隧道建设, 2009, 29(2): 185-188 |
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| 作者姓名： | 周捷 漆泰岳 旷文涛 李斌 |
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| 作者单位： | 西南交通大学土木工程学院 |
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| 摘 要： | 在低黏聚力的软弱地层、大断面隧道开挖中，掌子面稳定是施工中面临的很大问题。采用超前预加固工法，对浏阳河隧道开挖过程进行数值模拟，通过分析超前预加固法对隧道位移、受力的影响，并研究各加固参数的敏感性，得到掌子面的超前锚杆加固长度对掌子面的稳定性影响最大，掌子面外超前预加固对改善超前核心土受力也有较大影响。
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| 关 键 词： | 大断面隧道超前预加固 开挖支护挤出变形超前核心土预收敛稳定性数值模拟 |
| 收稿时间： | 2008-12-26 |
| 修稿时间： | 2009-03-24 |
Numerical Simulation on Stability of Tunnel with Large Cross-section in Process of Pre-reinforcement,Excavation and Support |
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| ZHOU Jie,QI Taiyue,KUANG Wentao,LI Bin. Numerical Simulation on Stability of Tunnel with Large Cross-section in Process of Pre-reinforcement,Excavation and Support[J]. Tunnel Construction, 2009, 29(2): 185-188 |
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| Authors: | ZHOU Jie QI Taiyue KUANG Wentao LI Bin |
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| Affiliation: | School of Civil Engineering, Southwest Jiaotong University |
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| Abstract: | The stability of the tunnel face is a big challenge when a tunnel with large cross-section is constructed in soft stratum with low cohesion.Numerical simulation is made for the excavation of Liuyanghe tunnel,which is constructed by pre-reinforcement method.By analyzing the impact of the pre-reinforcement on the displacement and force-bearing behavior of the tunnel and by studying the sensitivity of all the reinforcement parameters,the authors conclude that the reinforcement length of the advance anchor bolt... |
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| Keywords: | tunnel with large cross-section pre-reinforcement excavation and support extrusion advance core pre-convergence stability numerical simulation |
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