Study on the relationship between gas geology, gas emission characteristics and outburst risk in Chengzhuang coal mine

In order to further study the relationship between gas emission characteristics and outburst risk under the regional gas geological background, qualitative analysis, experimental analysis and numerical simulation are used to analyze the gas dynamic disaster characteristics of Chengzhuang coal mine on the macro level based on the similar representation of gas emission characteristics in underground mining space, laboratory environment, numerical simulation and other working conditions.Based on the analysis of the regional gas geological law, two main factors influencing the regional gas dynamic disaster in Chengzhuang mining area are coal structure and gas occurrence.Then, the influence of coal structure and adsorption equilibrium pressure on gas desorption characteristics is studied by means of field coal sample experiment analysis.Finally, the remaining gas emission characteristics are analyzed by changing the thickness of soft layer and gas pressure simulation.The relationship between the symptoms and the prominent danger is obtained.The research ideas and results can play a positive role in the daily hidden danger of gas disaster and disaster prevention and control in Chengzhuang coal mine, and can also play a guiding role in the research of outburst risk prediction using gas emission characteristics.