Studying the stability of mining operations under the conditions of deep mines

Abstract

Purpose. Study of the sustainability of mining in the conditions of deep mines for the development of solutions to improve the safety of miners. Method. A comprehensive research method is used, including the analysis of publications, laboratory studies on models of optical and equivalent materials, the mining experiment and the processing of experimental data. Results. It has been established that when determining the size of lateral rocks displacements in reservoir preparatory workings when protected by compliant structures, their rigidity at constant load can be considered variable in time, until complete compression of the pliable support. When p rotecting the workings with the pillars of coal, the change in their rigidity occurs in a linear relationship Scientific novelty. When studying the stability of mine workings in deep mine conditions, it is proposed to evaluate the effectiveness of methods used to protect reservoir development workings by the approximation value of the haulage contour, taking into account changes in the rigidity of security structures while maintaining the output behind the lava. Practical meaningfulness. When working on sloping and steep seams at great depths, one should focus on protecting reservoir haulage drifts with wide pliable supports or laying out of the space developed, as a way to control the roof in the longwall, which will keep the local preparatory mine workings and increase the safety of mining operations.