A finite element perturbation method for the prediction of rockburst

A finite element model is proposed to predict the potential occurrence of rockburst in underground openings. It is assumed that rockburst results due to instability of rock mass and the analysis is based on a perturbation technique. The rock mass is considered to be elastic-brittle-plastic. A novel...

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Bibliographic Details
Published inComputers & structures Vol. 85; no. 17; pp. 1304 - 1309
Main Author Sharan, S.K.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.09.2007
Subjects
Brittle plasticity
Finite element method
Infinite media
Instability
Rockburst
Underground openings
Finite element method
Underground openings
Infinite media
Instability
Rockburst
Brittle plasticity
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ISSN0045-7949
1879-2243
DOI10.1016/j.compstruc.2006.08.084

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Summary:A finite element model is proposed to predict the potential occurrence of rockburst in underground openings. It is assumed that rockburst results due to instability of rock mass and the analysis is based on a perturbation technique. The rock mass is considered to be elastic-brittle-plastic. A novel method of elastic supports is used to simulate the effects of unbounded rock mass. Mohr-Coulomb and Hoek–Brown failure criteria are used and both associated and non-associated plasticity are considered. The effectiveness and efficiency of the proposed numerical technique are demonstrated by comparing finite element results with analytical solutions for ‘deep’ circular openings in rock mass subject to hydrostatic in situ stress. Analyses of example problems are presented to demonstrate the potential occurrence of rockburst predicted by using the proposed model.
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SourceType-Scholarly Journals-1
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ISSN:0045-7949
1879-2243
DOI:10.1016/j.compstruc.2006.08.084