An Establishment of Dependencies of Mutual Influence of Geological and Mining Factors on the Stress-Strain State of the Rock Mass

Abstract

Abstract The production activity of the coal mining industry is accompanied by the involvement in the development of deposits, which are characterized by a complication of mining and geological conditions at a depth of 1500 m. The increase in mountain pressure at great depths leads to a decrease in the efficiency of the use of complex mechanized technologies of coal mining. This is due to the imperfection of the technologies of fastening and control of mountain pressure. The existing schemes of movement of mechanized supports were developed for use at depths up to 800 m and do not take into account the features of geomechanical processes in the rock mass at depths of more than 800 m. In addition, the known technologies of fastening and management of the roof do not provide the necessary speed of fastening of the treatment face at high speeds of moving longwalls, thereby causing the formation of large undefended areas of the direct roof and increasing the probability of dumping in the bottom-hole space of longwall.