Institute of Mining of Far Eastern Branch of Russian Academy of Sciences (Khabarovsk, Russia):

Potapchuk M. I., Researcher, Candidate of Engineering Sciences, e-mail: potapchuk-igd@rambler.ru

Kursakin G. A., Chief Researcher, Doctor of Engineering Sciences

Sidlyar A. V., Junior Researcher

Vein deposits are developed in complex mining and geological and geomechanical conditions by underground mines of Eastern Primorye, which are included in the special group. Increasing of mining operations depth and various natural and anthropogenic factors (changing elements of ore bodies occurrence and properties of lithology complex) make a significant influence on the stress of rock massif and formation of bump hazardous areas in the time of processing. Research of stress-strain state of developed rock massifs of Yuzhnoye and Zabytoye deposits were carried out with application of numerical modeling by method of final elements. The defined peculiarities of formation of anthropogenic field of stresses in the elements, applied on development system deposits, according to the development of purifying operations, made it possible to single out the potentially bump hazardous areas. The stress grade in selvedge of massif of two upper sublevels and interchamber pillars grows considerably on final stages of stope processing due to the application of combined development system on Yuzhnoye deposit. Floor pillars belong to the potentially bump hazardous elements of development system with shrinkage of ore, applied on the Zabytoye deposit. Application of introduced and substantiated parameters of efficient measures will provide the improvement of safety of mining operations on deep horizons of deposits.

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