›› 2011, Vol. 32 ›› Issue (7): 2199-2204.

• Numerical Analysis • Previous Articles     Next Articles

Stability analysis of jointed rock slopes based on discrete element method

HE Xu-wen1, 2，LIU Zhong1, 2，LIAO Biao1, 2，WANG Cui-cui1, 2   

  1. 1. College of Civil Engineering & Mechanics, Xiangtan University, Xiangtan, Hunan 411105, China; 2. Instutite of Rheological Mechanics, Xiangtan University, Xiangtan, Hunan 411105, China
  • Received:2009-11-16 Online:2011-07-10 Published:2011-06-30

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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

Key words: joints, rock slope, discrete element method, joint connectivity, landslide

CLC Number: 

  • TU 457
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