| 岩体闭合节理摩擦滑动模拟与力学行为研究 |
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| 引用本文： | 曹平,邓志斌,陈枫.岩体闭合节理摩擦滑动模拟与力学行为研究[J].岩石力学与工程学报,2004,23(20):3439-3443. |
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| 作者姓名： | 曹平 邓志斌 陈枫 |
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| 作者单位： | 中南大学资源与安全工程学院,长沙,410083 |
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| 基金项目： | 国家自然科学基金(50274074)资助课题 |
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| 摘 要： | 基于边界单元法的不连续位移法,引进摩擦节理单元来模拟岩体节理,认为节理摩擦过程中其上下表面间作用的应力满足摩尔-库伦准则。在此基础上,研究了节理不同闭合和滑动状态对应力和位移的影响。研究发现,当节理张开时,节理的存在导致节理两端产生非常强烈的应力奇异性;当节理闭合且有切向滑动时,节理两端的应力奇异性明显降低。
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| 关 键 词： | 岩石力学 节理 摩擦滑动 数值模拟 应力奇异性 |
| 文章编号： | 1000-6915(2004)20-3439-05 |
| 收稿时间： | 2003-5-7 |
| 修稿时间： | 2003-7-29 |
NUMERICAL SIMULATION ON SLIDING OF CLOSE JOINT IN ROCK MASS AND EVALUATION ON ITS MECHANICAL BEHAVIOR |
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| Cao Ping,Deng Zhibin,Chen Feng.NUMERICAL SIMULATION ON SLIDING OF CLOSE JOINT IN ROCK MASS AND EVALUATION ON ITS MECHANICAL BEHAVIOR[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(20):3439-3443. |
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| Authors: | Cao Ping Deng Zhibin Chen Feng |
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| Abstract: | Frictional joint element is adopted for the numerical simulation on the frictional sliding of joints in rock mass based on discontinuous displacement method of BEM. The shear and normal stresses on an element are considered to satisfy the Mohr-Coulumb rule if the element is in sliding condition. Then the influence of joint on stress and displacement of rock mass is studied considering the joint close and sliding,respectively. The obtained results show that intensive stress singularity can be observed at the ends of open joint. |
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| Keywords: | rock mechanics joint frictional sliding numerical simulation stress singularity |
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