Institute of Problems of Comprehensive Exploration of Subsoils of Russian Academy of Sciences (Moscow, Russia):

Eremenko V. A., Leading Researcher, Doctor of Engineering Sciences
Esina E. N., Senior Researcher, Candidate of Engineering Sciences

N. A. Chinakal Institute of Mining of Siberian Branch of Russian Academy of Sciences (Novosibirsk, Russia):

Gakhova L. N., Senior Researcher

«Abakanskiy rudnik» LLC (Abaza, Russia):

Zinchenko D. N., Head of Department of Forecasting and Preventing of Rock Bumps

Leading Engineer of the Site of LLC «Abakanskiy rudnik» E. V. Matveeva was the participant in this work.

This article gives the recommendations, which make possible to carry out complex geomechanical provision of mastering of deposits in the time of transition of mining to deep depths. Research of physical and mechanical characteristics of rocks is necessary together with definition of values and direction of activity of principal stresses. It is also necessary to apply the methods of numerical modeling, which make possible to develop the optimal parameters of working excavations on the projecting stage with provision of safety and increasing of efficiency of mining operations. Taking into account the carried out laboratory and natural researches, and practical experience of mastering of iron ore deposits, there is recommended to carry out the development of ore bodies by sublevel systems. There was defined, that the depth of spreading of areas of stresses' concentration depends on sizes of processed units and waste areas. In complex geomechanical conditions, the best way of stabilization of rock pressure is increasing of project of waste area in the region of split blocks due to accelerated development of first blocks in the floor. When the waste area is higher than working thickness of ore body, the depth of spreading of inelastic deformation areas is decreased. Observation method of control of displacements with drilling of measurement wells was offered for the purpose of definition of areas of rock damage around excavations, working excavation and monitoring of shear deformation.
This work was carried out within the Program of Fundamental Researches of the Department of Earth Sciences «Fundamental problems and prospects of use of potential of complex mastering of subsoils on the basis of development of resource-saving and resource-reproducing geotechnologies».

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