Research on characteristics of coal and gas outburst in deep mines

Abstract The single B4 coal seam mined in Fengcheng mining area is a gently inclined medium-thick coal seam, with high gas pressure and high content, soft coal seam, low air permeability, and serious coal and outburst disasters. According to the gas occurrence characteristics of Fengcheng mining area, the characteristics and laws of 186 outburst accidents in the mining area are statistically analyzed, and the characteristics of in-situ stress coal and gas outburst are obtained. It provides theoretical guidance for the prevention and control of gas dynamic disasters in mining areas, which is of great significance to safe and efficient production in mining areas.