Grebyonkina A. Geomechanical substantiation of technological decisions of efficiency increase of mining the abrupt coal layers inclined to gas-dynamical phenomena

The dissertation is devoted to development of a complex aeromechanical substantiation of parameters of new technological decisions on increase of safety and efficiency of mining of abrupt coal layers, which are dangerous on gas-dynamical phenomena, without carrying out the preventive actions. In the dissertation some theoretical and experimental researches on determining the laws of distribution of basic pressure in clearing working face while working off the abrupt layers and changes of aeromechanical processes in the clearing working face which are used to define and forecast of change of the current informative parameters of clearing and preparatory developments condition by developing the abrupt layers on modern depths. It was determined that the length of the zone of maximum state of a coal layer and the value of maximum tension in this zone depends on the coal layer magnitude, width of a mining excavation, resilient and firm characteristics of the soils that contain coal.