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

Table 2

Characteristic stress data table.

Number	σc (MPa)	σcc (MPa)	σci (MPa)	σcd (MPa)	() %	() %	() %
10–5	118.13	27.44	66.72	85.42	23.23	56.48	72.31
20–5	139.26	28.80	81.42	113.44	20.68	58.47	81.46
30–5	177.10	32.34	112.45	154.20	18.26	63.50	87.07
20–10	133.84	26.68	71.66	90.89	19.93	53.54	67.91
30–10	162.34	42.05	94.90	132.35	25.90	58.46	81.53
30–20	155.21	40.30	87.24	124.28	25.96	56.21	80.07