Open AccessRock slope stability analysis adopting Eurocode 7, a limit state design approach for an open pit
Author(s) -
Limukani Mathe,
Maria Ferentinou
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/833/1/012201
Subject(s) - stability (learning theory) , eurocode , limit (mathematics) , slope stability , joint (building) , geotechnical engineering , slope stability analysis , structural engineering , limit analysis , sensitivity (control systems) , probabilistic logic , open pit mining , residual , geology , computer science , mathematics , engineering , finite element method , statistics , mining engineering , mathematical analysis , algorithm , machine learning , electronic engineering
In this paper we compare the partial factors approach of Eurocode 7 with a traditional deterministic limit equilibrium analysis approach and probabilistic approach. The example case is a simplistic model profile of an open pit mine cut slope configuration. The controlling parameters in a structurally dictated failure mechanism were introduced as random variables in the model, to account for the different types of uncertainties arising in rock engineering data. The limit equilibrium method was used in this study to conduct rock slope stability analysis, while the impact of naturally uncertain and variable parameters, among others water pressure and earthquake activities were considered. Different scenarios from the best to the worst-case were analysed and later compared. The sensitivity analysis revealed the importance of the joint failure plane, joint roughness coefficient and joint friction angle and how the actions (groundwater pressure and earthquake action) affect the slope’s stability. These results emphasize some advantages of the approach, and the potential further embracement from the rock engineering fraternity.