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Keywords: strength criteria
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Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-1321
... to the implicit assumption made by Mohr-type failure criteria. Test results were used to define a new generalized strength criterion for each rock in terms of stress-tensor invariants. Upstream Oil & Gas criteria strength criteria reservoir geomechanics amphibolite specimen strength intermediate...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1533
... that stresses control the stress - strain behaviour of rocks, strength criteria are best written in effective stress form. However, around most mining excavations, the pore - water pressure will be low, if not zero and so s ij ˜ s ij. For this reason, it is common in mining rock mechanics to use total stresses...

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