| 基于数值模拟的隧道开挖及支护方法选择 |
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| 引用本文： | 丁录董.基于数值模拟的隧道开挖及支护方法选择[J].勘察科学技术,2012(3):9-12,28. |
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| 作者姓名： | 丁录董 |
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| 作者单位： | 中铁第四勘察设计院集团有限公司 武汉市430063 |
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| 摘 要： | 对某隧道岩层交汇土石交界段隧道开挖与支护的施工过程进行三维有限元数值模拟,对比分析正台阶留核心土法和双侧壁导坑法两种工法施工过程中的围岩应力和隧道周边收敛变形随时间和施工工序的变化规律,从整体上把握隧道施工的效果,找出有利于围岩稳定的最优开挖方案。
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| 关 键 词： | 隧道开挖与支护 岩层交汇 数值模拟 正台阶留核心土法 双侧壁导坑法 |
Tunnel Excavation and Supporting Scheme Selection Based on Numerical Simulation |
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| Ding Ludong.Tunnel Excavation and Supporting Scheme Selection Based on Numerical Simulation[J].Site Investigation Science and Technology,2012(3):9-12,28. |
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| Authors: | Ding Ludong |
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| Affiliation: | Ding Ludong(China Railway No.4 Survey and Design Group Co.,Ltd.) |
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| Abstract: | The construction process of tunnel excavation and supporting in the junction of soil and rock of the rock intersection is numerical simulated by 3D finite element method,the variation laws of surrounding rock stress and convergence deformation surrounding tunnel along with time and construction process by two excavation schemes,which are bench reservation core soil and both sides heading method,are compared and analyzed.Then according to the tunnel construction effect in the whole,the best excavation scheme is selected for the surrounding rock stability. |
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| Keywords: | tunnel excavation and supporting rock intersection numerical simulation bench reservation core soil method both sides heading method |
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