MATHEMATICAL MODEL OF COAL AND GAS EMISSION

A physico mathematical model of the process of coal and gas ejection is proposed, which is based on the gas filtration equation. The model takes into account the stress state of the coal mass, but does not take into account the properties of outburst hazardous coals: electret potential, the degree of chemical activity, the role of the additional energy reserve of the coal microstructure, and active gas generation directly in the in the process of ejection of the hive into the mined-out space. It is shown that the absolute values of the coal emission hazard criteria are not known.