| 基于离散单元法密集节理岩体边坡稳定性分析 |
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| 引用本文： | 刘可定,贺续文.基于离散单元法密集节理岩体边坡稳定性分析[J].路基工程,2011,0(2):56-59. |
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| 作者姓名： | 刘可定 贺续文 |
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| 作者单位： | 1.湖南城建职业技术学院, 湖南湘潭 411105 |
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| 摘 要： | 节理岩体边坡的稳定性很大程度上取决于节理的强度及其分布形式。由于节理岩体边坡的失稳破坏具有大变形和非连续的特点,因此,离散单元法成为研究节理岩体边坡破坏机理的最有效方法之一。通过采用离散元软件PFC2D对岩石进行数值模拟,建立含密集节理的岩体边坡模型,讨论了岩体连通率对边坡破坏形式的影响。结果表明,在多组节理密集分布的岩体边坡中,连通率越大,其稳定性越差;随着连通率的减小,边坡的破坏形式由大范围的滑坡转变为局部崩塌的形式。
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| 关 键 词： | 节理 岩体边坡 离散单元法 连通率 滑坡 |
| 收稿时间： | 2019-11-11 |
Stability Analysis of Densely Jointed Rock Slope Based on Discrete Element Method |
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| Authors: | LIU Ke-ding HE Xu-wen |
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| Affiliation: | 1.Hunan Urban Construction College,Xiangtan 411105,Hunan,China;2.School of Civil Engineering and Mechanics,Xiangtan University,Xiangtan 411105,Hunan,China) |
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| Abstract: | The stability of jointed rock slope largely depends on the strength and distribution form of joint.For jointed slope failure has the characteristics of large deformation and discreteness,discrete element method becomes one of the most effective methods to research the failure mechanism of jointed rock slope.Through numerical simulation on rock using discrete element software PFC2D,the model of densely jointed rock slope is established and the influence of rock connectivity rate on slope failure mode is discussed.The result shows that for densely jointed rock slope,the stability is worse if connectivity rate is higher.With the reduction of connectivity rate,large-size landscape is transferred to partial collapse. |
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| Keywords: | joint rock slope discrete element method connectivity rate landslide |
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