Techno Press
Techno Press

Geomechanics and Engineering   Volume 12, Number 6, June 2017, pages 965-981
DOI: http://dx.doi.org/10.12989/gae.2017.12.6.965
 
Influence of undercut and surface crack on the stability of a vertical escarpment
Sounik K. Banerjee and Debarghya Chakraborty

 
Abstract     [Full Text]
    Stability of vertical escarpments has been the subject of discussion for long time. However, available literature provides scarce knowledge about the effect of the formation of undercut and surface cracks on the stability of a vertical escarpment. The present study deals with a systematic analysis of the effect of surface cracks and undercut on slope stability using finite element based lower bound limit analysis. In the present analysis, the nondimensional stability factor (γH/c) is used to inspect the degrading effect of undercut and cracks developed at different offset distances from the edge of the vertical escarpment. Failure patterns are also studied in detail to understand the extent and the type of failure zone which may generate during the state of collapse.
 
Key Words
    undercut; crack; vertical escarpment; lower bound limit analysis; failure
 
Address
(1) Sounik K. Banerjee:School of Civil Engineering, Kalinga Institute of Industrial Technology, Bhubaneswar, India;
(2) Debarghya Chakraborty:
Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India.
 

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