NEW APPROACH TO ASSESSMENT OF MINE WORKING STABILITY

7th International Scientific Conference - SGEM2007, www.sgem.org, SGEM2007 Conference Proceedings/ ISBN: 954-918181-2, June 11-15, 2007

ABSTRACT

Based on experimental data analysis and obtained by the author novel solutions
on distribution of stress fields and deformations in rock mass enclosing mine
workings it is shown that in the course of deformation rock mass undergoes
successively discrete series of states that correspond to a definite ratio of
physical-mechanical properties of rock mass and rock pressure level. It is
determine that when an outline of mine working is deformed by 12-18%, the
latter bifurcates (looses its stability) that corresponds to bifurcational solutions
for plasticity equations.

Keywords: stability, rock mass, mine working, bifurcation.