Interaction of deformation-strength characteristics of the support load-bearing elements in the preparatory workings

The objective of this work is to study the relationship of the
deformation-strength characteristics of the fastening system with its
displacement value. The tendencies of influence are divided into two
groups. The multivariate computational experiments have been performed
in the conditions of coal-face works. It is shown the influence of
geomechanical conditions of the mine working maintenance on the
fastening system operating mode change when choosing its rational
deformation-strength characteristics. On the basis of the performed studies,
it was concluded that it is necessary to adjust the fastening elements of
each specific support setting scheme. This is necessary to provide
recommendations for the maintenance schemes optimization of reusable
extraction workings.