Comparison of limit-equilibrium, numerical and physical models of wall slope stability

We review commonly observed failure mechanisms associated with footwall slopes, and examine the basic concepts underlying the limit equilibrium approach assessing footwall slope stability. The failure mechanisms described are those, where failure follows pre-existing joints or occurs in intact rock,...

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Bibliographic Details
Published in:International journal of rock mechanics and mining sciences (Oxford, England : 1997) England : 1997), 2011, Vol.48 (1), p.16-26
Main Authors: Alejano, L.R., Ferrero, A.M., Ramírez-Oyanguren, P., Álvarez Fernández, M.I.
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Computation methods. Tables. Charts
Exact sciences and technology
Factor of safety
Failure
Failure mechanisms
Footwall slope
Footwalls
Geotechnics
Instability
Limit equilibrium
Mathematical models
Miscellaneous
Physical modelling
Shear strength reduction
Slabs
Slope stability
Slope stability analyses
Soil mechanics. Rocks mechanics
Stability
Structural analysis. Stresses
UDEC
Walls
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Summary:We review commonly observed failure mechanisms associated with footwall slopes, and examine the basic concepts underlying the limit equilibrium approach assessing footwall slope stability. The failure mechanisms described are those, where failure follows pre-existing joints or occurs in intact rock, namely, fully and partially joint-controlled bilinear and ploughing slab failures. Numerical models implemented using UDEC illustrate the code’s potential for analysing these failure mechanisms. Physical models representing the studied instability mechanisms were studied in a tilt-test set-up in the laboratory, with the empirical results comparing fairly well with the theoretical approaches.
ISSN:1365-1609
1873-4545
DOI:10.1016/j.ijrmms.2010.06.013