| 深隧道围岩稳定性的数值模拟与模型试验研究 |
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| 引用本文： | 陈浩,任伟中,李丹,夏彬伟.深隧道围岩稳定性的数值模拟与模型试验研究[J].岩土力学,2011,32(Z2):615-620. |
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| 作者姓名： | 陈浩 任伟中 李丹 夏彬伟 |
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| 作者单位： | 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;武汉科技大学城市学院;重庆大学西南资源开发及环境灾害控制工程教育部重点实验室; |
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| 基金项目： | 国家自然科学基金资助(No.40772186,No.51008298); 岩土力学与工程国家重点实验室重点项目(No.SKLZ08064); 国家科技支撑计划(No.2009BAK53B03) |
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| 摘 要： | 在大型真三轴模型试验机上进行隧道的超载试验,试验过程中采用内窥摄影实时监测试件的破坏演化全过程,确定了高应力条件下隧道的变形特征和裂纹演化特征;采用应变测量技术对隧道关键部位的应变值进行了测量,据此分析了围岩体的应力变化规律。针对相似材料的力学特性,建立了应变软化模型,采用与模型试验相同的边界条件进行了数值模拟分析,对围岩体的塑性应变变化过程和应力场进行了研究。结果表明,两种手段反映的破坏演化过程是基本吻合的,所反映的围岩体应力变化规律也是一致的。
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| 关 键 词： | 深隧道 物理模型试验 超载 数值模拟 破坏过程 |
| 收稿时间： | 2010-12-16 |
Numerical simulation and model test study of stability of surrounding rock for deep tunnel |
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| CHEN Hao,REN Wei-zhong,LI Dan,XIA Bin-wei.Numerical simulation and model test study of stability of surrounding rock for deep tunnel[J].Rock and Soil Mechanics,2011,32(Z2):615-620. |
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| Authors: | CHEN Hao REN Wei-zhong LI Dan XIA Bin-wei |
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| Institution: | 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics，Chinese Academy of Sciences, Wuhan 430071, China; 2. College of Urban Construction, Wuhan University of Science and Technology,Wuhan 430065, China; 3. China Education Ministry’s Key Lab. for Exploitation of Southwest Resources and Environmental Disaster Control Engineering, Chongqing University, Chongqing 400030, China |
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| Abstract: | The physical model test of a tunnel is made on the triaxial model-test machine.The whole failure process is observed by applying full inner-spy photograph technology;with it the deformation and crack extension of key parts are studied.By using the strain measure technology,the strains of key parts of the surrounding rock are measured;according to this,the variability of the stresses of surrounding rock is studied.The measured values of the main physical and mechanical indices of the model material are close... |
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| Keywords: | deep tunnel physical model test overload numerical simulation failure process |
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