Substantiating the optimal type of mine working fastening based on mathematical modeling of the stress condition of underground structures

Purpose. Predicting the formation of a stress-strain state (SSS) in rock mass within boundaries influence stope operations on horizon -480 m axes 2028 at 10th Anniversary Kazakhstans Independence (DNK) Mine. Methodology. An engineering-geological data host rocks properties are analyzed based international ISRM standard. Numerical modelling and calculation load-bearing capacity compound support (roof-bolt+shotcrete+mesh) arch used mine performed with help RS2 software. This program, Finite Element Method two-dimensional formulation, makes it possible to take into account significant number factors influencing state. Findings. The calculations indicate that resistance is incommensurably low comparison values initial stress field components mass. In such conditions, may be more effective strengthen vicinity working than setting frames or using massive profiles. Originality. paper presents results mathematical modeling underground supporting aquifer structures developed for complex mining-and-geological geomechanical conditions driving, operating workings deep horizons mines Donskoy Ore Mining Processing Plant. Based research, preliminary (advanced) strengthening border zone inelastic (destructive) deformations has been substantiated, as priority method control stability workings. Practical value. research can when creating model designing stable parameters support.