The technogenic impact of mining on the environment is analyzed and the transition to geotechnology with stowing to reduce the impact of mining operations is proposed. The results of the research work devoted to the justification of parameters of the development of salt deposits with stowing and the definition of the influence of stowing on the dynamics of deformation of the underworked rock massif are presented. The relevance of research aimed at creating a safe and efficient technology for the transition from systems with natural maintenance of stoping space to systems with stowing has been substantiated.  The results of studies on qualitative and quantitative assessment of the state of the rock massif (by the finite element method using FLAC3D software), worked out by combines, are given and the dynamics of the impact of mining operations on the rock mass and the change in the maximum stresses during the hardening of the stowing in the chambers are revealed. The numerical modeling method is used to analyze the conditions of change in the state of the underworked rock mass, to establish the mechanisms of its deformation at various stages of development. It is recommended to use this approach for geotechnical assessment of the rock mass state in conditions of using development systems of different classes.

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The article presents the relationship between the technical condition of the elements of bearing supports of mining equipment and spectral characteristics based on the analysis of the high-frequency component of the vibration signal, allowing to determine the type of defects and predict their development.Various methods of diagnostics of rolling bearing defects are considered and the method of narrow-band analysis of spectral components is recommended for industrial development. In addition to the General level of vibration, reference spectral masks limiting the levels of vibration intensity in individual spectral bands can be used as diagnostic signs of changes in the technical condition.As a result of the study, the dependences of vibration parameters on defects of bearing bearings were established, on the basis of which the method of in-place assessment of the technical condition of mining equipment and prediction of the dynamic quality of bearing assemblies, which improves the reliability and efficiency of their use, is justified.

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