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Journal of Mining Sciences

2018 year, number 6

Deformation of Ponderable Rock Mass in the Vicinity of Straight Finite-Line Crack

M. V. Kurlenya, V. E. Mirenkov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
Keywords: трещина, деформирование, аналитическое решение, теория, порода, вес, обратные задачи, Crack, deformation, analytical solution, theory, rock, weight, inverse problems

Abstract

Deformation of rock mass with crack is considered in the context of failure control. The classical analytical solutions obtained for imponderable rock mass with crack give infinite values of stresses at tips, which disagrees with the reality. The phenomenological theory is proposed for calculating total displacements in the vicinity of crack based on the qualitative differences in the weight actions: tension takes place above the crack while compression arises under it. The dimensionless parameter characterizing ratio of the upper edge displacement of the crack to its lower edge displacements and applied to describe behavior of rocks is substantiated.