ISSN 0536-1028 (Print)              ISSN 2686-9853 (Online)  

Potapchuk M. I., Rasskazov I. Iu., Korneeva S. I., Lomov M. A. Evaluation of internal dumping impact on the geomechanical state of Vostok-2 deposit underground mining. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2019; 7: 77–85 (In Russ.). DOI: 10.21440/0536-1028-2019-7-77-85

Introduction. Internal dumping is becoming more relevant, it is used at both opencast deposits and combined deposits. Therefore, an integrated study aimed at estimating the geomechanical state of the surrounding mass of Vostok-2 deposit is becoming more relevant in case waste rock is in the borrow cut.
Research aim. Geomechanical estimation of internal dumping impact on the state of rock mass at Vostok-2 tungsten ore deposit, which mines ore by the combined method.
Methodology. The research included laboratory study of physical and mechanical properties of rock, stability calculation with the use of modern software, numerical modeling of the stress-strained state of rock mass with the finite element method.
Results. Full assessment of the impact of internal dumping on the geomechanical state of the surrounding mass has made it possible to state that waste rock disposal in the central part of an open pit will not significantly influence the geodynamic condition of deep horizons. At that, in the course of development, the dump will keep ample stability.
Summary. The results of the integrated research at Vostok-2 can be applied at other facilities which mine in similar mine and geological conditions. Key words: deposit; internal dumping; physical and mechanical properties; rock mass; displacement; borrow cut; stability.



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Received 25 June 2019



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