Mechanics of Rocks and Rock Mass

This subject deals at the first with stress and deformation state of rock mass
before mining activities. Than follow on changes in the rock mass during
mining activities. Separately it is explained for linear mine workings and for
large mining workings. For mining methods with pillar leaving, dimensioning of
that pillar is important. At mining methods like long walking stress-
deformation state of rock mass is important for right choose of technological
arrangements. The attention to the anomalous rock mass behaviour is paid.