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Journal of Mining Sciences

2020 year, number 4

Fracture of Structured Rocks and Materials in Nonuniform Stress Fields

V. P. Efimov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: хрупкое разрушение, горные породы, нелокальные критерии прочности, структурный параметр, Brittle fracture, rocks, nonlocal fracture criterion, structural parameter


The article reports the experimental data on brittle rock strength from the bending tests of beams and from diametrical fracture of disk specimens with an axial hole. The author uses the nonlocal fracture approach and compares the strength from the tests with the tensile strength of rocks. It is shown that the different geometry fracture tests allow determining the structural parameter of a medium.