Damage Ratio Based on Statistical Damage Constitutive Model for Rock

Table 2

Correction coefficient and distribution parameters subjected to different confining pressures for sandstone.

σ3 (MPa)	m	F0 (MPa)	Der
0	4.726	31.230	0.236
3	2.970	75.256	0.400
6	2.290	129.836	0.548
9	1.997	172.682	0.650
12	1.844	199.821	0.720
24	1.634	320.298	0.844