| 木寨岭隧道地应力特征及对隧道变形影响的研究 |
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| 引用本文： | 张文新,张建国,唐绍武,刘志强,蒋永强,高攀,李沿宗.木寨岭隧道地应力特征及对隧道变形影响的研究[J].隧道建设,2013,33(2):116-121. |
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| 作者姓名： | 张文新 张建国 唐绍武 刘志强 蒋永强 高攀 李沿宗 |
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| 作者单位： | （1.中铁隧道集团技术中心， 河南 洛阳 471009； 2.中铁隧道勘测设计院有限公司， 天津 300133； 3.中铁隧道集团二处有限公司, 河北 三河 065201； 4.中铁西南科学研究院有限公司， 四川 成都 610031） |
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| 基金项目： | 中铁隧道集团科研计划(隧研合2009-21) |
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| 摘 要： | 为解决高地应力引起的隧道施工大变形，采用有限元多元回归分析和神经网络对有限原位地应力测试结果的地应力值进行拓展，分析整座隧道绝大部分地段的侧压力系数均大于1以及隧道轴线方向的地应力最大和构造应力为主的地应力场特征。结合木寨岭隧道炭质板岩情况，通过FLCD数值计算，得出高地应力对隧道采用三台阶法施工变形的水平影响范围为2~3倍洞径，并且隧道中台阶位置是应力释放的主要阶段，也是引起变形的主要阶段，为后续施工提供一定的指导。
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| 关 键 词： | 木寨岭隧道 高地应力 数值模拟 变形影响 |
| 收稿时间： | 2012-09-27 |
Ground Stress Characteristics and Their Influence on Tunnel Deformation: Case Study on Muzhailing Tunnel |
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| ZHANG Wenxin,ZHANG Jianguo,TANG Shaowu,LIU Zhiqiang,JIANG Yongqiang,GAO Pan,LI Yanzong.Ground Stress Characteristics and Their Influence on Tunnel Deformation: Case Study on Muzhailing Tunnel[J].Tunnel Construction,2013,33(2):116-121. |
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| Authors: | ZHANG Wenxin ZHANG Jianguo TANG Shaowu LIU Zhiqiang JIANG Yongqiang GAO Pan LI Yanzong |
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| Institution: | (1. Technology Center of China Railway Tunnel Group, Luoyang 471009, Henan, China; 2. China Railway Tunnel Survey & Design Institute Co., Ltd., Tianjin 300133, China; 3. The 2nd Engineering Co., Ltd. of China Railway Tunnel Group, Sanhe 065201, Hebei, China; 4. China Railway Southwest Research Institute Co., Ltd., Chengdu 610031, Sichuan, China) |
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| Abstract: | The ground stress values measured in the limited in situ ground stress tests are expanded by means of FE multiple element regression analysis and neural network.The characteristics of the ground stress field are analyzed. The conditions of carbonaceous slate of Muzhailing tunnel is analyzed by means of FLCD numerical calculation. Conclusions drawn are as follows: 1) The horizontal influencing range of the high ground stress on the deformation of tunnel constructed by 3 bench excavation method is about 2 to 3 times of the tunnel diameter. 2) The middle bench, is the main stress releasing phase and also the main deformation inducing phase. |
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| Keywords: | Muzhailing tunnel high ground stress numerical simulation deformation |
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