Two-Dimensional Stability Assessment of Rock Slopes Based on Random Field
Publication: International Journal of Geomechanics
Volume 17, Issue 7
Abstract
Geotechnical engineering is dominated mostly by uncertainties, because it always deals with highly variable natural materials. Reliability-analysis approaches emerge as a more reasonable and rigorous way of handling uncertainties. Two-dimensional stability assessment of rock slopes is performed, and the probability of failure of rock slopes against planar sliding is determined using the random fields. Both cohesion and friction coefficient along a discontinuity are treated as a normal random field and are represented by the mean values, standard deviations, spatial correlation lengths, correlation coefficient, and cross-correlation length, which account for the cross correlation between cohesion and coefficient of friction. Several examples are used to verify the proposed approach. The numerical results obtained from the proposed method are in good agreement with the numerical results obtained from Monte Carlo simulations. Moreover, the proposed method provides a new approach to study two-dimensional stability of rock slopes.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (Grants 51325903, 41372303, and 51279218), Natural Science Foundation Project of Chongqing Science and Technology Commission (CQ CSTC) (Grant CSTC, cstc2013kjrcljrccj0001), Graduate Scientific Research and Innovation Foundation of Chongqing, China (Grant CYB16012), research fund by the Doctoral Program of Higher Education of China (Grant 20130191110037), and Chongqing Graduate Student Research Innovation Project (Grant CYB14017).
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Published In
International Journal of Geomechanics
Volume 17 • Issue 7 • July 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Mar 3, 2016
Accepted: Oct 13, 2016
Published online: Dec 5, 2016
Discussion open until: May 5, 2017
Published in print: Jul 1, 2017
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