Experimental Study on the Deformation and Permeability Characteristics of Raw Coal under the Coupling Effect of Confining Pressure and Pore Pressure

Table 1

Test loading scheme.

Axial pressure (MPa)	Confining pressure (MPa)	Pore pressure (MPa)	Axial pressure loading rate (mm/s)
8	4	1	0.00167
		2
		3
8	6	1	0.00167
		2
		3
8	8	1	0.00167
		2
		3