Experimental Investigation on Sandstone Permeability under Plastic Flow: Permeability Evolution Law with Stress Increment

Table 2

Triaxial compressive strength of the sandstone samples.

No.	Serial no.	Dia. (mm)	Height (mm)	Confining pressure (MPa)	Failure load (kN)	Compressive strength (MPa)
1	R-TS1	50.1	99.9	2.0	174.07	88.7
2	R-TS2	50.3	99.3		171.52	87.4
3	R-TS3	49.9	100.1		177.21	90.3
4	R-TS4	49.6	99.6	4.0	233.93	119.2
5	R-TS5	49.5	99.4		230.40	117.4
6	R-TS6	50.1	100.3		236.48	120.5
7	R-TS7	49.7	99.3	6.0	268.67	136.9
8	R-TS8	49.2	100.4		262.39	133.7
9	R-TS9	50.1	99.2		256.30	130.6
10	R-TS10	49.7	99.6	8.0	281.03	143.2
11	R-TS11	50.2	100.2		288.68	147.1
12	R-TS12	49.6	99.4		283.58	144.5
13	R-TS13	50.4	100.2	10.0	299.48	152.6
14	R-TS14	50.3	99.8		315.37	160.7
15	R-TS15	50.1	100.4		304.97	155.4