Research on Precision of Partial Coefficient Finite Element Method in Stability Analysis for Rock Slope

Abstract:

Partial coefficient finite element method is a new method of analyzing the stability of jointed rock slope. Partial coefficient Finite element analysis of joints rock slope stability, the calculation accuracy will be influenced by many factors, Such as the yield criterion, the mechanical parameters of rock mass, the computing grid, etc. In this paper, combined with example analyzed the impact of these factors on the partial coefficient method calculation accuracy. Considering material partial coefficients of slope’s weak layer, then, the weak layer is reduced by the strength reduction method. Analysis results show that: Using partial coefficient method analysis of stability of rock slope, under the associated flow rule, should choose Mohr-Coulomb inscribed circle criterion. In addition, when using Mohr - Coulomb inscribed circle criterion, the modulus of elasticity and poison’s ratio on the calculation results can be ignored. And with a few elements ideal result can be deduced.

• Periodical: Advanced Materials Research (Volume 1089)
• Pages: 248-252
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1089.248
• Online since: January 2015
• Authors: Gang Wang, Long Su, Jun Rui Pang, Wei Sun
• Keywords: Joint Rock Slope, Partial Coefficient, Precision Influence, Yield Criterion

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