Enhanced Rock Slope Stability Analysis: Integrating the Partial Factor Method into the Limit Equilibrium Method

Authors

  • Hare Ram Timalsina Norwegian University of Science and Technology, Trondheim 7491, Norway and Tribhuvan University, IOE, Pashchimanchal Campus, Pokhara 33700, Nepal

DOI:

https://doi.org/10.3126/jes2.v3i1.66235

Keywords:

Eurocode, Limit equilibrium, Partial factor method, Rock slope stability

Abstract

Rock slope stability is crucial for sustainable design. Especially concerning natural or artificial rock-cut slopes. The stability of these slopes depends largely on features of rock mass, particularly discontinuities. Failure modes are determined by these features and are evaluated using kinematics analysis with stereographic projections. Various methods exist for analyzing rock slopes, including the limit equilibrium method (LEM), which assesses stability based on a factor of safety (FS). Conversely, the partial factor method (PFM), predominantly used in Europe, offers a more reliable and probabilistic approach, incorporating uncertainty factors. Although Eurocode, which employs the PFM, is widely utilized, it faces disputes and undergoes updates based on ISRM recommendations. The partial factor method is considered more conservative than the limit equilibrium method due to its comprehensive probabilistic approach. The choice between methods depends on project requirements, data availability, and expertise. This study compares the limit equilibrium and partial factor methods for rock slope analysis, concluding that the partial factor method is more conservative and sustainable for long-term stability assessment. Whereas, the traditional method is often used for short-term assessments.

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Published

2024-06-04

How to Cite

Timalsina, H. R. (2024). Enhanced Rock Slope Stability Analysis: Integrating the Partial Factor Method into the Limit Equilibrium Method. Journal of Engineering and Sciences, 3(1), 53–57. https://doi.org/10.3126/jes2.v3i1.66235

Issue

Section

Review Articles