| 北固山隧道施工力学特征及围岩变形控制 |
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| 引用本文： | 金煜皓,,韩立军,,孟庆彬,王帅,刘振军,杨灵.北固山隧道施工力学特征及围岩变形控制[J].华侨大学学报(自然科学版),2018,0(6):816-825. |
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| 作者姓名： | 金煜皓 韩立军 孟庆彬 王帅 刘振军 杨灵 |
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| 作者单位： | 1. 中国矿业大学 力学与土木工程学院, 江苏 徐州 221116;2. 中国矿业大学 深部岩土力学与地下工程国家重点实验室, 江苏 徐州 221116;3. 中铁十四局集团 第五工程有限公司, 山东 兖州 272100 |
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| 摘 要： | 基于ANSYS软件,采用有限元法和BP神经网络建立数值分析模型,并确定围岩的力学参数.首先,考虑隧道开挖的空间效应,并分析围岩的位移场和应力场.然后,阐述围岩和边坡的破坏机理,从而进一步表明围岩的牵引作用对边坡和隧道稳定性的重要性.最后,应用所得破坏机理对北固山隧道围岩变形进行分析.结果表明:考虑边坡稳定性和围岩变形的技术方案是合理、有效的.
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| 关 键 词： | 空间效应 偏压小净距隧道 隧道洞口-边坡体系 滑移-拉裂变形破坏 围岩变形控制 |
Mechanical Characteristics and Deformation Control of Surrounding Rock for Beigushan Tunnel |
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| JIN Yuhao,' target="_blank" rel="external">,HAN Lijun,' target="_blank" rel="external">,MENG Qingbin,WANG Shuai,LIU Zhenjun,YANG Ling.Mechanical Characteristics and Deformation Control of Surrounding Rock for Beigushan Tunnel[J].Journal of Huaqiao University(Natural Science),2018,0(6):816-825. |
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| Authors: | JIN Yuhao " target="_blank">' target="_blank" rel="external"> HAN Lijun " target="_blank">' target="_blank" rel="external"> MENG Qingbin WANG Shuai LIU Zhenjun YANG Ling |
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| Institution: | 1. School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China; 2. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China; 3. The Fifth Engineering Company Limited, China Railway 14th Construction Bureau Group, Yanzhou 272100, China |
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| Abstract: | Based on ANSIS software, the finite element method and BP neural network are used to build back analysis model, and to determine the mechanical parameters of surrounding rock.Firstly, the displacement and stress fields of surrounding rock are analyzed, considering the space effect of tunnel excavation.Then, the failure mechanism of surrounding rock and slope is presented, which indicates that the traction effect of surrounding rock is critical for the stability of slope and tunnel.Finally, using the failure mechanism, the analysis of deformation of surrounding rock in Beigushan tunnel shows that the technical Scheme considering both slope stability and surrounding rock deformation is reasonable and effective. |
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| Keywords: | space effect bias tunnel with small interval distance system of tunnel portal-slope deformation failure of sliding-fracturing deformation control of surrounding rock |
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