Increasing Permeability of Coal Seam and Improving Gas Drainage Using a Liquid Carbon Dioxide Phase Transition Explosive Technology

Table 2

Coal seam parameters.

Gas contents (m^3/t)	Maximum relative pressure of gas (MPa)	Porosity	Permeability (m^2)	Adsorption constant a (m^3/kg)	Adsorption constant b (MPa^−1)	Ash content (%)	Moisture content (%)
10.6	0.98	0.065	3.9 × 10^−16	14.5	0.75	0.14	0.04