Donskoy Ore-Dressing and Processing Enterprise – subsidiary of «Transnational Company «KazKhrom» JSC (Khromtau, Kazakhstan):

Tretyak A. V., Head of Scientific and Research Center, e-mail: Anatoliy.tretyak@kz.enrc.com

This article describes the basic complex of typical geomechanic problems, which make a negative influence on the stability of mine openings, which are carried out in instable massif on deep horizons.
Development and introduction of timely technological decision, related to the provision of stability of underground mine openings, requires the accounting of the whole complex of regularities of formation of stress-strain state of rock massif. There is developed the complex of basic measures and technical decisions for the guaranteeing of stability of underground mine openings on their carrying out stage. There is given a brief description of existing methods of calculation of frame metal support, taking into account the results of carried out mathematical modeling of formation of stress state of underground construction. This modeling is based on the basic states of underground construction mechanics about the interconnection of massif support, as the unite deformable system elements.
The calculation methodology of standing support was developed for the purpose of full value realization of complex of measures and technical decisions, related to the provision of stability of underground mine openings on their carrying out stage. According to the foregoing stage, there were carried out the optimal support calculations for the deep horizons of mines of Donskoy Ore-Dressing and Processing Enterprise.
There are given the results of the calculations of comparative correspondence of carrying capacity of applied support (in various regimes) and defined values of components of initial stresses field in near-boundary massif.