| 地下洞室超欠挖问题非线性有限元分析 |
| 修订日期：2007-01-10 点此下载全文 |
| 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].钻探工程,2007,34(8):70-72.. Nonlinear FEM Analysis on Over-break Problem in Underground Engineering[J]. Drilling Engineering, 2007,34(8):70-72. |
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| 刘建民 陈文涛 丁泰山 |
| 西北工业大学力学与土木建筑学院 陕西西安710072 |
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| 中文摘要: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。 |
| 中文关键词:地下洞室,超欠挖,非线性有限元,围岩稳定性,塑性区,位移 |
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| Nonlinear FEM Analysis on Over-break Problem in Underground Engineering |
| 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. |
| keywords:underground chamber,over-break,no-linear FEM,stability of surrounding rocks,plastic zone,displacement |
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