Laboratory Study on Changes in Gas Desorption Properties of Anthracite after Cyclic Loading

Table 3

Cumulative desorption capacity from the briquettes under different loading frequencies.

Loading conditions		Equilibrium pressure (MPa)	Desorption capacity within 1 min (Q1/mL·g^−1)	Desorption capacity within 60 min (Q60/mL·g^−1)	Q1/Q60 (%)
Frequency (Hz)	Amplitude (MPa)
4	12–18	0.5	2.62	5.23	50.07
7			3.83	6.62	57.90
10			4.16	7.09	58.70
—	15		2.22	4.70	47.18
4	12–18	1.0	2.79	5.40	51.65
7			4.18	6.69	62.48
10			4.27	7.18	59.48
—	15		2.13	4.87	43.77
4	12–18	1.5	3.02	5.80	52.10
7			4.24	6.75	62.78
10			4.50	7.22	62.27
—	15		2.41	4.97	48.56