Experimental and Numerical Study on Hydromechanical Coupled Deformation Behavior of Beishan Granite considering Permeability Evolution

Table 2

Permeability test results for specimen BSS-2 for three different initial pressure differences.

Axial strain (%)	Axial stress (MPa)	Permeability ()
		3.4 MPa	5.4 MPa	7.4 MPa
0	0	1.32	1.24	0.64
0.414	48.7	0.71	0.66	0.66
0.716	106.1	0.78	0.50	0.47
0.940	150.1	0.48	0.56	0.48
1.163	200.0	0.75	0.61	0.70
1.425	252.5	1.33	1.12	1.54
1.855	315.6	5.81	9.86	15.36
2.011	79.5	13.56	16.07	17.74
2.599	75.9	13.25	14.08	14.69