Progressive Failure and Fracture Mechanism of Sandstone under Hydraulic-Mechanical Coupling

Table 3

Data table of characteristic strain.

Number	εc (%)	εcc (%)	εci (%)	εcd (%)	() %	() %	() %
10–5	0.95	0.26	0.51	0.64	27.37	53.68	67.37
20–5	1.12	0.20	0.55	0.77	17.86	49.11	68.75
30–5	1.28	0.19	0.68	0.98	14.84	53.13	76.56
20–10	1.23	0.21	0.51	0.64	17.07	41.46	52.03
30–10	1.40	0.28	0.61	0.89	20.00	43.57	63.57
30–20	1.12	0.27	0.56	0.92	24.11	50.00	82.14