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

Table 1

Permeability test results for specimen BSS-1 for three different initial pressure differences.

Axial strain (%)	Axial stress (MPa)	Permeability ()
		3.4 MPa	5.4 MPa	7.4 MPa
0	0	3.77	2.97	2.33
0.386	38.6	1.05	1.30	1.34
0.629	79.3	1.03	1.12	1.29
0.855	123.8	0.55	1.08	1.26
1.066	165.6	0.94	1.29	1.65
1.240	201.8	1.45	1.92	2.36
1.528	256.6	3.43	5.30	7.54
2.337	81.8	72.74	55.31	59.57