考虑岩石微缺陷影响的损伤本构模型

刘志祥,晏孟洋,张双侠,熊帅,王凯

Damage Constitutive Model Considering the Effect of Rock Microdefects

Zhixiang LIU,Mengyang YAN,Shuangxia ZHANG,Shuai XIONG,Kai WANG

表2 砂岩和苏长岩损伤演化方程参数

Table 2 Parameters of the damage evolution equation for sandstone and saprolite

岩石类型	σ₃₃ /MPa	σ $_{11}^{r}$ /MPa	ε $_{11}^{p}$ /%	σ $_{11}^{p}$ /MPa	b=b（MSE_min）	F₀/%	m
砂岩	3	25.1474	0.74	107.1221	0.70	0.5271	8.7655
	5	37.2000	0.85	132.1709	0.74	0.6660	7.5065
	8	62.9458	0.98	156.6792	0.85	0.9274	3.4272
苏长岩	3	56.8732	0.44	249.1216	0.90	0.4307	6.8780
	5	69.0954	0.50	274.0948	0.85	0.4707	6.8579
	8	101.7840	0.58	306.4413	0.80	0.5192	6.6992