围压与料浆浓度对尾砂充填体峰后损伤演化研究

杨世兴,付玉华,占飞

Study on Post Peak Damage Evolution of Tailings Filling Body by Confining Pressure and Slurry Concentration

Shixing YANG,Yuhua FU,Fei ZHAN

表2 充填体试件特征参数

Table 2 Characteristic parameters of backfill specimen

试件编号	料浆浓度/%	E/MPa	$σ_{P}$ /MPa	$ε_{P}$ / $ε$	$ε_{u}$ / $ε$	β	A	D_P	B
Q-4-2	66	199	1.401	0.0101	0.0329	2.301	11 842.869	0.303	52.368
Q-4-3	66	415	1.927	0.0068	0.0300	2.153	14 719.369	0.317	49.519
Q-5-1	70	70	0.884	0.0160	0.0381	3.744	1 121 237.128	0.211	70.403
Q-5-2	70	238	1.953	0.0115	0.0299	2.491	19 407.241	0.286	68.031
Q-5-3	70	186	1.639	0.0109	0.0371	4.220	36 699 402.500	0.192	62.987
Q-6-1	74	113	0.856	0.0094	0.0349	3.332	1 311 592.378	0.231	57.464
Q-6-2	74	461	2.607	0.0078	0.0292	2.637	99 620.248	0.275	60.326
Q-6-3	74	330	2.507	0.0099	0.0285	3.299	953 328.834	0.233	78.318