Complex geomechanical modeling of mining vein deposits of block structure

Mining of vein deposits formed in block structures requires consideration of the impact from the deformation processes occurring as a result of changes in the natural and man-induced state of the rock mass. Information on the magnitude and directions of stresses acting in the block mass are the boundary conditions taken into account in further calculations of the stressandstrain state and stability of structural elements of underground geotechnology. For an efficient assessment of the natural stressed state of a tectonically disturbed rock mass, associated with the need for numerical simulation of the geomechanical state of tectonic structures, spread over large areas, the PRESS 3D URAL dedicated software suite (Polygor LLC, St. Petersburg) was adopted for 3D settings. At the same time, due to the occurrence elements and morphology of the ore veins it is advisable to use the CAE Fidesys software suite (Fidesys LLC, Moscow) in 2D settings for local assessment of the stress concentrations in vicinity of mine workings and pillars formed as the result of mining operations.