Sidelnikov O. Substantiation the technological parameters of working off the extraction pillars on the basis of three-dimensional model of competence a stratified rock mass

The actual theoretical and practical task which consists in the substantiation the technological parameters of working off the extraction pillars on the basis of simula-tion results of incremental longwall moving in the three-dimensional geomechanical model of a block taking into consideration effect of all stratified transversally-isotropic rock mass thickness, power characteristics of support in the longwall and development opening is solved in the thesis. The analysis of three-dimensional simulation results allowed to substantiate and develop techniques of definition a rational length of a longwall for the specific technical, mining and geological conditions and cutting machine advance speed sub-ject to the factor of rocks durability in the face space. Also in the thesis defined a ra-tional place of the planned longwall stop along an extraction pillar in which a reserve of hydraulic strut deformation capacity is the highest possible and developed proposi-tions to rational application of powered support resource because of hydraulic strut uniform wear along a longwall. Reliability of the gained dependences, the made conclusions and adequacy of the offered three-dimensional geomechanical model of a block is corroborated by enough high convergence (not less than 80%) of results of the full-scale experiments and computer simulation.