| Simulation of Stress Distribution around Tunnels and Interaction between Tunnels Using an Elasto–plastic Model |
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| 引用本文： | Muya M S,何波,王靖涛,李国成.Simulation of Stress Distribution around Tunnels and Interaction between Tunnels Using an Elasto–plastic Model[J].中国地质大学学报(英文版),2007(1). |
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| 作者姓名： | Muya M S 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，School of Civil Engineering and Mechanics Huazhong University of Science and Technology，School of Civil Engineering and Mechanics Huazhong University of Science and Technology，School of Civil Engineering and Mechanics Huazhong University of Science and Technology，Wuhan 430074 China，Wuhan 430074 China，Wuhan 430074 China，Wuhan 430074 China |
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| 摘 要： | 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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