THE INFLUENCE OF GRANIENIH CONDITIONS ON THE STRESS-DEFORMATION OF THE STATE HYDROSTONE
The efficiency of the production faces, equipped mechanized complexes, largely depends on the technical level of powered roof supports, compliance and constructive power parameters used roof support mining and geological conditions of their application [1]. The main force of the support element of any roof support is a hydraulic strut, performing the functions of the force action through the overlap of the shields on the breed of the roof when it is thrust and resisting a given characteristic a lowering of roof rocks in the workspace, supported by the overlapping shields [2, 3]. Hydraulic strut is a power cylinder coupled a pressure relief and unloading valves and a pressure gauge, usually arranged in a single rack-mount hydraulic unit [4].