Procedure to Determine Strength of Rocks with Regard to Their Rheological Alteration
Yu. A. Petrenko1, A. L. Kas’yanenko2
1Donetsk National Technical University, Donetsk, Russia
2Institute of Physics of Mining Processes, Donetsk, Russia
Keywords: rheology, rock mass, rock strength, estimated resistance, load on mine support, failure criterion, rock pressure
Abstract
The authors reviewed the known methodical approaches to the determination of strength characteristics of rocks using their testing results. Some shortages of the approaches are revealed, and the common shortage is their empirical nature consisting in reduction of strength of rock mass in proportion to degradation of its quality. The proposed procedure to determine rock mass strength takes into account the rheological alteration of rock mass. The procedure better represents physical processes in mine openings due to rock pressure.
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