Svystun R. Justification and calculation parameters of mine workings support system taking into account the skewness loading

The established control regularities of condition mine workings support system in the zone of influence stope working on the basis of controlling displacement processes of endanchored marginal rock and loading frame-bolting support by means of choosing resource-saving regime of anchors working constant resistance are defended. The revealed regularities are the basis for an engi-neering method of calculation of resource-saving parameters frame-bolting support. For implementation of its states improved method calculation of anchors parameters with the spacer elastic lock to achieve the required working regime composed of frame-bolting support. The developed recommendations have been fully tested during support mine working in Western Donbass mines. The mine researches established stability regularity of reduce roof and floor convergence mine working by 25 - 33%, and sides by 54 - 65% that reduced cross-section loss in the zone of abutment pressure by 26,5 - 37,0%. For improving stability of mine workings confirmed the feasibility of the developed recommendations on differential strengthening frame support by anchors with adjustable force deformation characteristic that limits the maximum negative impact of abutment pressure ahead of stope. The developed methodology of selection parameters frame-bolting support accepted for use in PJSC "DTEK Pavlogradugol" mines and implemented in the norma-tive-technical standards for support mine workings on flat seams of Donbass. The economic effect improving stability mine workings expected up to 1235 UAH r.m.