Stability analysis of jointed rock slopes based on discrete element method

HE Xu-wen; LIU Zhong; LIAO Biao; WANG Cui-cui

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Stability analysis of jointed rock slopes based on discrete element method

更新时间：2026-06-25

- Stability analysis of jointed rock slopes based on discrete element method
- Vol. 32, Issue 7, (2011)
- 作者机构：
  
  1. 湘潭大学土木工程与力学学院,湖南,湘潭,411105
  2. 湘潭大学流变力学研究所,湖南,湘潭,411105
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU457
- Online First：30 June 2011，
  
  Published：2011
- 稿件说明：
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HE Xu-wen, LIU Zhong, LIAO Biao, et al. Stability analysis of jointed rock slopes based on discrete element method[J]. 2011, 32(7).
DOI：

HE Xu-wen, LIU Zhong, LIAO Biao, et al. Stability analysis of jointed rock slopes based on discrete element method[J]. 2011, 32(7). DOI：

摘要

节理岩体边坡的稳定性在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制的最有效方法之一。通过采用离散元软件PFC2D进行数值模拟，对完整岩石及节理的力学性能进行研究，并建立含密集节理的岩体边坡模型，讨论了节理连通率对边坡破坏形式的影响。结果表明，节理岩体边坡的失稳破坏是一个渐进的过程；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

Abstract

The stability of jointed rock slope is mainly controlled by the shear strength and distribution of joints. The failure of jointed rock slopes usually has large deformation and discontinuous features; therefore

discrete element method becomes an efficient way for stability analysis of jointed rock slopes. A general study of the intact rock properties and mechanical characteristics of joints are carried out using the particle flow code in two dimensions (PFC2D); and a heavily jointed rock slope is modeled using PFC2D to study the slope stability. The results reveal that the failure of jointed rock slopes is a gradual process; the joint connectivity has large effect on the stability of rock slopes with heavily joints; when the joint connectivity is more higher

the slope is more unstable; with the decrease of joint connectivity

the slope failure modes will change from the large scale slide into a partially collapsed form

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