| 地下洞室超欠挖问题非线性有限元分析 |
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| 引用本文： | 刘建民,陈文涛,丁泰山. 地下洞室超欠挖问题非线性有限元分析[J]. 探矿工程(岩土钻掘工程), 2007, 34(8): 70-72 |
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| 作者姓名： | 刘建民 陈文涛 丁泰山 |
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| 作者单位： | 西北工业大学力学与土木建筑学院,陕西,西安,710072 |
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| 摘 要： | 运用数值分析的方法,采用ANSYS10.0版有限元分析程序对洞室超欠挖进行三维模拟计算,分析了不同超挖位置、超挖深度、超挖数量等对洞室围岩稳定性的影响,得出了超欠挖部位应力集中数值解及塑性区产生的影响范围,为地下工程掘进施工和初期支护设计提供重要的参考依据。
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| 关 键 词： | 地下洞室 超欠挖 非线性有限元 围岩稳定性 塑性区 位移 |
| 文章编号： | 1672-7428(2007)08-0070-03 |
| 修稿时间： | 2007-01-10 |
Nonlinear FEM Analysis on Over-break Problem in Underground Engineering |
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| LIU Jian-min,CHEN Wen-tao,DING Tai-shan. Nonlinear FEM Analysis on Over-break Problem in Underground Engineering[J]. Exploration Engineering （Rock & Soil Drilling and Tunneling）, 2007, 34(8): 70-72 |
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| Authors: | LIU Jian-min CHEN Wen-tao DING Tai-shan |
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| Abstract: | In this paper,a 3D numerical model is calculated by nonlinear FEM analysis.The influence of different over-break conditions(different position,amount,depth etc) to the stability of surrounding rocks has been analyzed.The results showed the influence range of plastic zone and stress focus on the over-break position.Those are very important references in underground opening and initial support lining design. |
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| Keywords: | underground chamber over-break no-linear FEM stability of surrounding rocks plastic zone displacement |
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