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4 不同应力水平下改进非线性黏弹塑性蠕变模型拟合参数
Table 4 Improved nonlinear viscoelastic-plastic creep model fitting parameters under different stress levels
应力水平/MPaE0/MPaE1/MPaη1/(GPa·s)η2/(×104 GPa·s)ABm/(×103R2
66.354.702.1-0.681.12.2000.994
8189.7117.8269.754.8-0.012.20.0100.975
103.3103.4117.23.5321.48-322.5-2 236.0000.993
122.03.40.71.90.870.60.0010.995
142.23.61.92.41.754.10.0010.994
161.52.52.31.60.760.20.0020.995
186.32 086.904.8-0.130.45.2000.996
20184.293.13 327.30.117.7414.41 120.1000.995