Gas Seepage Model and Experiment Based on Bedding Effect of Fractured Coal Body

Table 1

The experimental scheme.

	Inlet gas pressure, P1 (MPa)	Outlet gas pressure, P2 (MPa)	Axial compression, σz (MPa)	Confining pressure, (MPa)	Effective stress, σe (MPa)
Loading process; Unloading process	0.6	0.1	2	2	1.75
	0.6	0.1	4	4	3.75
	0.6	0.1	6	6	5.75
	0.6	0.1	8	8	7.75
	0.6	0.1	10	10	9.75
	0.6	0.1	12	12	11.75
	0.6	0.1	12	12	11.75
	0.6	0.1	12	10	10.42
	0.6	0.1	12	8	9.08
	0.6	0.1	12	6	7.75
	0.6	0.1	12	4	6.42
	0.6	0.1	12	2	5.08