Tsarikovsky V. V., Head of Underground Mining and Geomechanics, Senior Fellow, Doctor of Engineering Sciences, e-mail: vi_lyashenko@mail.ru, Tsarikovsky V. V., Senior Fellow for Underground Mining and Geomechanics, Candidate of Engineering Sciences,  State Enterprise "Scientific-Research Institute of Mining" (Ukraine); Lyashenko V. I., Head of Research Division, Senior Researcher, Candidate of Engineering Sciences, State Enterprise "Ukrainian Scientific-Research and Design Institute of Industrial Technology" (Ukraine)

In the underground mining of iron ores rich in proportion Krivbass camera systems in the overall development of ore mining by underground methods is increasing and reaches 43.0 ... 47.3%, and with the production of magnetite quartzite, to 51.4%. Their efficiency is achieved at the expense of geomechanical and technological justification of mining the rich ore of iron quartzites and the poor, providing acceptable stable slope parameters outcrops in the hanging wall depending on the strength coefficient and the angle of incidence of the reservoir. Developed: the method of determining the geometric parameters of camera systems design, which allows to determine the allowable size of outcrops and pillars and a given coefficient clogging ore mining technology rich iron ore, which is a combination of story-chamber system design and system-storey collapse, excluding stocks with breaking and pillars of ore from mixing cave. Research results and their implementation into production in the amount of 659.4 thousand tons of marketable ore confirmed the possibility of increasing the supply chamber of 1.42 ... 1.86 times its weight in the general reserve unit — 7.3 ... 13.0%, and iron content in ore mined — 0.86 ... 1.36%.

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