Kozhushok O. Justification of the parameters of combined protecting system with progressive resistance for working drift support

The research presents a solution of an urgent theoretical and practical problem aimed at the justification of the parameters of combined protecting system with progressive resistance for the support of working drifts of repeated usage under difficult mining and geological conditions. The set of rock and artificial materials features which determine their behavior at all stages of mode of deformation and are considered in the process of protecting system parameter selection has been found out. The regularities of changes in frame loading subject to lava distance have been determined. The results have been used for the motivation of the stages of protecting system resistance upgrading. The integrated results of mining observations and mathematical and physical simulation of the parameters and composition of protecting system as well as its vari-ants have been justified and proposed with the construction of casting stripe being determined considering main roof category by its failure susceptibility.