The probabilistic key-group method |
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Authors: | A R Yarahmadi Bafghi T Verdel |
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Institution: | 1. Mining Engineering Department, Yazd University, Daneshgah BV., 89195/741 Yazd, Iran;2. Laego, Ecole des Mines, Parc Saurupt, Nancy Cedex 54042, France |
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Abstract: | Key-block approaches are widely used in the analysis of rock slopes. The key-group method improves such analyses by taking into account groups of blocks instead of single blocks. Nevertheless, these stability analyses are usually carried out within a context where uncertainty may be a difficult problem to overcome. In the present paper, we propose introducing probabilistic approaches into the key-group method in order to account for uncertainty in the mechanical parameters of the problem to be solved. Both the first-order, second-moment method (FOSM) and the advanced second-moment method (ASMM) are considered herein and compared with Monte-Carlo simulations through the use of five theoretical case studies. Lastly, the probabilistic key-group method (PKGM) is qualified. Copyright © 2004 John Wiley & Sons, Ltd. |
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Keywords: | key-blocks key-groups rock slope stability probabilistic analysis reliability |
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