A New Method for the Measurement of Gas Pressure in Water-Bearing Coal Seams and Its Application

Table 2

Gas pressure in three coal seams.

No.	Gas content ()	Moisture (%)	Ash content (%)	Adsorption constant		Porosity (cm^3/cm^3)	Apparent relative density ()	Gas pressure (MPa)
				()	(MPa^-1)
1^#	2.60	0.9	27.73	21.70	1.34	0.0253	1.58	0.2
2^#	2.89	2.7	11.80	23.31	0.43	0.0216	1.39	0.79
3^#	2.22	2.7	6.80	12.36	0.93	0.0388	1.32	0.54