Three-dimensional upper bound limit analysis of supported cavity roof with arbitrary profile in Hoek-Brown rock mass
Tunnelling and Underground Space Technology(2017)
摘要
•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.
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关键词
Collapse,Roof profile,Supporting pressure,Three-dimensional failure mode,Stability graph
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