Rheology effect determination of the heterogeneous rock massif on the stress-strain state of the breakage face geomechanical system

The purpose of this study is to determine the nature of influence
of the rheological properties of the rocks on the results of computational
experiments simulating the mine workings contour condition during the
breakage face advance. To determine the deformations along the mine
workings contour, the calculations have been made of the junction area
between the preparatory and stope face mine workings by the finite
element method for various parameters of the material models. These data
provided the basis for analysis of the patterns development of the rheology
modelling influence on the stress-strain state of the geomechanical system.
The obtained patterns are described by a function of many variables, and
this function determines the limit and degree of rheology effect on the
results of calculations. For the first time this pattern takes into account the
heterogeneity of the rheological characteristics of rocks and the specifics of
the computational domain geometry. The use of the obtained patterns
makes it possible to simplify significantly the process of modelling in time
and space of the geomechanical systems, which have a complex structure
describing the interaction of several objects.