This article is cited in 1 paper

MECHANICS

Numerical simulation for mechanical behaviour of rocks around a mine working at different place advance rates

A. V. Kuznetsova^a, I. I. Smolin<sup>ba

a</sup> Tomsk State University, Department of Physics and Engineering
^b Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences

Abstract: A viscoplastic medium model and the criterion of roof collapse by maximal accumulated non-elastic strain are proposed to describe distinctions in stages of roof collapse in stope ores at different place advance rates. The applied viscoplastic model is described with the numerical formulation of the problem which is solved by the finite element method. The presented results of calculations testify that the proposed approach is promising and efficient in describing rate sensitivity in phenomena of geo-environment break-down.

Keywords: rocks, mine working, stress-strain state, viscoplastic medium, rate sensitivity, roof collapse.

UDC: 539.3+539.4+622.833.5+622.834


Accepted: May 7, 2010