Experimental Study on Work of Adsorption Gas Expansion After Coal and Gas Outburst Excitation

Coal and gas outburst is an extremely complex dynamic phenomenon of mine gas, which mainly manifested in a very short time. A large amount coal rock are thrown out from the body to mining space accompanied by volume high-pressure gas. In process outburst, internal energy consumption composed two parts: one used throw broken mass, other pulverize coal. this article, perspective dissipation, experiment ejection with different particle sizes, adsorption pressure studied. The characteristics studied analyzed, proportion adsorbed participating work quantitatively analyzed. results show that after excitation, residual will continue desorb on until power insufficient body; compared air, CO 2 has stronger ability far away, pulverization effect stronger. Through analysis when size sample consistent, greater is, larger desorption involved is. When test consistent pressure, small-size more, higher. crushing degree plays important role expansion release energy.