Three-dimensional upper bound limit analysis of supported cavity roof with arbitrary profile in Hoek-Brown rock mass

•A three-dimensional failure mode of a generic-shaped cavity roof was established.•A stability graph of cavity roof in regards to instability conditions was proposed.•The effects of roof profile and support pressure on roof stability was elucidated. Reliably predicting and estimating roof collapse i...

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Bibliographic Details
Published in:Tunnelling and underground space technology 2017-10, Vol.69, p.147-154
Main Authors: Guan, K., Zhu, W.C., Niu, L.L., Wang, Q.Y.
Format: Article
Language:English
Subjects:
Collapse
Failure modes
Geotechnical engineering
Holes
Limit analysis
Numerical analysis
Reliability
Rock masses
Rocks
Roof failures
Roof profile
Stability
Stability graph
Studies
Supporting pressure
Three dimensional analysis
Three-dimensional failure mode
Underground caverns
Underground construction
Upper bounds
Yield criteria
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