Damage Strengthening Constitutive Model of Cemented Paste Backfill

Table 2

Parameters of damage constitutive model.

Number	Elastic modulus (MPa)	Peak stress (MPa)	Peak load strain (%)	Residual strength (MPa)	α	m	a (%)	γ (%)
1	557.83	4.20	0.97	0.75	1.20	3.83	1.47	1.61
2	1066.64	5.96	0.73	0.82	1.16	3.70	1.09	1.25
3	1234.73	7.67	0.71	2.45	1.12	7.78	0.93	0.96
4	1437.79	7.68	0.69	1.94	1.06	3.75	1.01	1.18
5	1890.97	8.40	0.56	2.50	1.02	4.23	0.79	0.92
6	710.14	3.92	0.71	1.51	1.18	4.59	1.04	1.06
7	391.09	2.27	0.80	0.40	1.22	2.95	1.28	1.43
8	170.31	1.52	0.85	0.22	1.24	3.17	1.48	1.65