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

Table 5

Cumulative desorption capacities of briquettes under different loading amplitudes.

Loading conditions	Amplitude (MPa)	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)
7	10–20	0.5	2.13	4.60	46.37
	12–18		3.83	6.62	57.90
	14–16		3.24	6.32	51.19
—	15		2.22	4.70	47.18
7	10–20	1.0	1.88	4.78	39.27
	12–18		4.18	6.69	62.48
	14–16		3.46	6.60	52.43
—	15		2.13	4.87	43.77
7	10–20	1.5	2.22	4.91	45.16
	12–18		4.24	6.75	62.78
	14–16		4.37	6.60	66.17
—	15		2.41	4.97	48.56