泥质粉砂岩蠕变特性及非线性蠕变模型研究

张子洋,曹平,刘智振,肖峰

Study on Creep Characteristics and Nonlinear Creep Model of Argillaceous Siltstone

Ziyang ZHANG,Ping CAO,Zhizhen LIU,Feng XIAO

表1 中风化泥质粉砂岩在不同荷载水平下蠕变试验结果

Table 1 Creep test results of moderately weathered argillaceous siltstone under different load levels

应力水平/MPa	$ε_{0}$	$ε_{1}$	$ε_{2}$	$ε_{3}$	$ε$	$\sum_{i} ε_{i}$	$ε_{0} / ε$
6	1.52	0.66	-	-	2.19	0.660	69.4%
8	2.22	0.07	-	-	2.29	0.070	96.7%
10	2.42	0.11	-	-	2.53	0.110	95.7%
12	2.60	0.14	-	-	2.74	0.140	94.9%
14	2.80	0.10	0.02	0.013	2.92	0.133	95.9%
16	2.93	0.16	0.03	0.019	3.15	0.209	93.0%
18	3.19	0.16	0.04	0.034	3.44	0.234	92.7%
20	3.49	0.12	0.11	0.119	3.85	0.349	91.4%