Experimental Study of Stress-Seepage Coupling Properties of Sandstone under Different Loading Paths

Table 6

The deformation parameters in each stage of deviatoric stress cycle.

Sample number	Stage	Loading			Unloading
		El1; GPa	El3; GPa	μl	Eu1; GPa	Eu3; GPa	μu
SY-11	1	25.37	44.55	0.562	28.19	46.68	0.624
	2	32.27	51.77	0.653	34.78	50.92	0.702
	3	37.35	55.37	0.681	42.16	58.15	0.728
	4	41.68	61.75	0.691	48.18	69.93	0.697
SY-12	1	28.17	50.05	0.638	35.10	57.80	0.589
	2	37.24	66.61	0.562	43.91	88.94	0.486
	3	42.32	79.95	0.554	48.38	107.8	0.436
	4	46.44	85.87	0.549	50.12	121.8	0.387
SY-13	1	32.30	53.42	0.604	41.71	58.27	0.714
	2	42.29	70.22	0.612	50.02	84.47	0.584
	3	46.66	75.15	0.637	54.50	98.14	0.540
	4	49.23	70.45	0.733	56.21	100.8	0.538