| In recent years, with the mine increased mechanization, increased strength of underground mining, mining depth deepened mine disaster industry will be increased. The reaction is mine gas content increases, the increase of gas emission, gas pressure increases, the complexity of some mine geological structure. For effective prevention of gas accidents, we must do the coal mine gas prevention and control work to reduce or eliminate the gas accident, which not only is the coal mine production safety needs, but also mine to achieve high yield and efficient need, more is to implement people-oriented, to create a harmonious society. At the same time, do a good job in the coal mine gas control, and to promote economic development is of great significance and practical value.Fushun City, Alex coal mine coal and gas outburst. The mine is currently mining two seams, namely the J9coal and coal-C12, two coal layers spacing is30m. After identification of C12seam gas content, gas pressure, determine the outburst seam. C12coal seam prior to mining the coal seam must prevent coal and gas outburst study forecast untapped area gas emission, gas pressure, gas content. Predict regional and Face Outburst develop outburst prevention measures to achieve safe production.This thesis research, Alex coal mine coal layer gas occurrence predict coal seam gas emission, gas pressure. The top floor strata failure regularity working face through the simulation analysis, the seam roof and floor fissures change values in the working face of the mine stope wall rock variation qualitative and quantitative research and analysis. Reliable scientific analysis of data. Combined with the provisions of the corresponding control measures of coal and gas outburst. Research and analysis to determine the gas drainage parameters and data mine gas prevention and control in the future, rational mining provides reference information. And to take the effective regional outburst prevention measures as well as the local prevention measures. |
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