›› 2010, Vol. 31 ›› Issue (11): 3656-3660.

• Numerical Analysis • Previous Articles     Next Articles

Deformation stability of three-dimensional slope based on Hoek-Brown criterion

LIN Hang，CAO Ping，LI Jiang-teng，JIANG Xue-liang，HE Zhong-ming   

  1. School of Resources & Safety Engineering, Central South University, Changsha 410083, China
  • Received:2009-12-01 Online:2010-11-10 Published:2010-11-24

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Abstract:

The deformation stability of three-dimensional slope is analyzed based on Hoek-Brown criterion. Rock slope at a surface mine is chosen as the analysis object. Three-dimensional numerical analysis model is established by fast Lagrangian explicit-finite-difference code of continua (FLAC3D); and some monitoring points are located in the slope. In order to obtain the accurate values of displacements for these monitoring points, an internal routine (FISH) is developed to calculate the interpolation displacements. The static and dynamic displacements after slope excavation are analyzed, which reveals the slope macroscopic deformations in different zones and gives guidance for engineering practices. Finally, the strength reduction method in the Hoek-Brown criterion is applied to calculating the safety factor of slope after excavation. In the analysis, the non-convergence of calculation is chosen to describe the failure of slope. The calculation further extents the application of strength reduction method of Hoek-Brown criterion in three-dimensional slope stability analysis.

Key words: slope stability, three-dimensional numerical simulation, strength reduction method, Hoek-Brown criterion

CLC Number: 

  • TU 457
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