Experimental Study On Pore Characteristics Of Outburst Coal

Study on practical application of coal and gas outburst in the gas content of coal and gasdesorption speed, strength and attenuation of gas emission and coal gas resource evaluation andexploitation involved porosity. Research on pore structure will explain coal methane adsorptioncapacity and is important for reserves of coal and gas outburst mechanism. An in-depth study onthe pore structure, not only has more scientific explanation coal on the micro level for methaneadsorption capacity and has important theoretical significance for revealing the mechanism ofcoal and gas outburst.The article studies the differences of pore characteristics between outburst coal andnon-outburst coal and analysis the impact of different pore characteristics of the coal highlighton outburst by different coal samples of in different mine industry, experimental study ofdifferent coal samples of gas diffusion coefficient of speed, robustness, isothermal adsorptionand desorption and adsorption of nitrogen in low temperature and other characteristics.Through experimental research, the author believes that: outburst coal pore morphologybased primarily on one end closed and the ink tank holes, non-prominent coal mainly in openhole; the surface area of outburst coal is significantly higher than in non-coal outburst coal; inoutburst coal transition pore volume percentage is greater than non-outburst coal, part after thehighlight in outburst coal micropore big transitional holes; but outburst coal and nonoutburst coalhave no clear differences on pore distribution.