Determination, by the analytical method, an ability of powered roof support to take over an increased dynamic load
Stoiński K., Kostyk T.

S u m m a r y
The analytical method for determination of degree and efficiency of ability of hydraulic components of powered roof supports to take over an increased dynamic load was presented on the basis of the regulations and standards determining usefulness of powered roof supports susceptibility for dynamic loads which were designed for operation in seams exposed to bumping hazard. The method uses the knowledge of dynamic phenomena which occur in distressed rock mass as well as mathematical model of powered roof support for determination of possibilities and conditions for effective transfer of dynamic loads.