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Rheological model of hard rock pillar

โœ Scribed by W. Korzeniowski

Publisher
Springer
Year
1991
Tongue
English
Weight
866 KB
Volume
24
Category
Article
ISSN
0035-7448

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Observations of pillar failures in Canadian hard-rock mines indicate that the dominant mode of failure is progressive slabbing and spalling. Empirical formulas developed for the stability of hard-rock pillars suggest that the pillar strength is directly related to the pillar width-to-height ratio an

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The suggested method of pillar strength prediction makes use of the cumulative distribution function of strength as of the basic characteristic of a heterogeneous rock. It is argued that a certain failure probability can be found that is supposed to be close to constant for various types of hard roc