“…In order to assess the technological possibility, safety and economic feasibility of supplementary mining the ore from specific panels, it is necessary to carry out geomechanical modelling of the mining situation in the areas proposed for additional mining, to identify the degree of damage to the salt massif, which, in turn, is impossible without taking into account changes in the mechanical characteristics of the mined rock massif due to disturbances in the continuity of the massif of different nature and time after the mining. Some approaches to solve the problem of calculating the effective mechanical characteristics of the undermined rock massif were considered in the works of a some foreign and domestic scientists, for example, [1][2][3]. However, a complete methodological approach to solve the problem has not been developed.…”