Study on the Permeability Evolution and Its Formation Mechanism of Xiaojihan Aquifer Coal Seam under Plastic Flow

Table 14

The permeability recovery coefficient of nonwater specimen.

Axial strain (%)	Permeability recovery coefficient
	L-1.61	0.80	0.88	0.89	0.93
L-1.72	0.78	0.82	0.86	0.90
L-1.79	0.73	0.82	0.86	0.89
L-1.81	0.80	0.81	0.87	0.89
L-2.01	0.72	0.76	0.79	0.80