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| 走马岭隧道复杂围岩施工力学及稳定性分析 | |
| 引用本文： | 肖文,柴贺军,刘汉超,杨作生.走马岭隧道复杂围岩施工力学及稳定性分析[J].水文地质工程地质,2006,33(6):52-54,58. |
| 作者姓名： | 肖文 柴贺军 刘汉超 杨作生 |
| 作者单位： | 1. 成都理工大学,成都,610059;重庆高等级公路建设投资有限公司,重庆,401147 2. 重庆交通科研设计院,重庆,401142 3. 成都理工大学,成都,610059 4. 重庆高等级公路建设投资有限公司,重庆,401147 |
| 摘 要： | 采用三维弹塑性有限元数值仿真模拟,对隧道围岩内部位移监测成果进行了深入的分析.分析认为,围岩的初期支护结构基本达到极限强度,但围岩的屈服区厚度较小,松动圈所在深度小于0.5m;下台阶开挖对拱腰收敛位移影响较大、对拱顶下沉位移影响较小.同时,测点距掌子面1倍洞径和1.5倍洞径时,拱顶下沉位移及水平收敛位移分别趋于稳定. |
| 关 键 词： | 隧道 复杂围岩 位移监测 开挖效应 |
| 文章编号： | 1000-3665（2006）06-0052-03 |
| 收稿时间： | 2005-12-12 |
| 修稿时间： | 2005-12-122006-07-25 |
Analysis of construction mechanics and stability of complex surrounding rock at Zoumaling Tunnel |
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| XIAO Wen,CHAI He-jun,LIU Han-chao,YANG Zuo-sheng.Analysis of construction mechanics and stability of complex surrounding rock at Zoumaling Tunnel[J].Hydrogeology and Engineering Geology,2006,33(6):52-54,58. | |
| Authors: | XIAO Wen CHAI He-jun LIU Han-chao YANG Zuo-sheng |
| Institution: | 1. Chengdu University of Technology, Chengdu 610059, China ; 2. Chongqing High-grade Highway Construction and Investment Co. Ltd, Chongqing 401147, China; 3. Chongqing Communication Research and Design Institute, Chongqing 401142, China |
| Abstract: | Using the method of 3D elastic-plastic FEM numerical simulation, the authors analyze the displacement monitoring data of the interior of surrounding rock. The simulation result shows that the initial bracing structures reach the ultimate strength on the whole, but the yield region is relatively small and the depth of relaxation zone is less than 0.5 meter; the excavation of lower part has great influence on convergence displacement and little influence on arch crown vertical displacement. The influence radius of tunnel excavation on crown vertical displacement is equal to tunnel radius and the influence radius on horizontal convergence displacement is 1.5 times of tunnel radius. |
| Keywords: | tunnel complex surrounding rock displacement monitoring effect of excavatien |
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