| Simulation of Stress Distribution around Tunnels and Interaction between Tunnels Using an Elasto-plastic Model |
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| 作者姓名： | MuyaMS 何波 王靖涛 李国成 |
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| 作者单位： | School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China |
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| 基金项目： | The authors would like to thank colleagues of the geotechnical engineering research group at the School of Civil Engineering and Mechanics, Huazhong University of Science and Technology for their technical input and comments. |
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| 摘 要： |
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| 关 键 词： | 隧道 围岩 应力分布 相互作用 弹性-塑性模型 模拟 |
| 收稿时间： | 2006-08-12 |
| 修稿时间： | 2006-11-06 |
Simulation of Stress Distribution around Tunnels and Interaction between Tunnels Using an Elasto-plastic Model |
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| Muya M S,He Bo,Wang Jingtao,Li Guocheng.Simulation of Stress Distribution around Tunnels and Interaction between Tunnels Using an Elasto-plastic Model[J].Journal of China University of Geosciences,2007,18(1):90-94. |
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| Authors: | Muya M S He Bo Wang Jingtao Li Guocheng |
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| Institution: | School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | This article presents a computer simulation of stress distribution around tunnels and interaction between tunnels using an elasto-plastic model. A finite element method using ANSYS software has been used for the analyses of one and two tunnels at different overburden depths with different separating distances between the tunnels. The results of numerical analyses indicate that stress distribution and stress concentration around the tunnels vary with the overburden depths. It is found that the coefficients of stress concentration for elasto-plastic medium are smaller than those for elastic one by 1.9%. Furthermore, the interaction between the two tunnels rapidly decreases with the increase of separation distance between them. In addition, for quantitatively describing the interaction between the two tunnels, a critical separation distance is introduced. The critical separation distances between the two tunnels at different overburden depths are 8 m, 12 m, and 14 m respectively. This fact is very important and essential for the design of mining tunnels and to ensure safety in tunnel engineering. |
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| Keywords: | computer simulation tunnels stress distribution interaction |
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