开挖卸荷与孔隙水压耦合作用下千枚岩蠕变力学特性研究
蔡鸿宇, 王运敏, 李小双, 耿加波

Study on the Creep Mechanical Properties of Phyllite Under the Coupling Effect of Excavation Unloading and Pore Water Pressure
Hongyu CAI, Yunmin WANG, Xiaoshuang LI, Jiabo GENG
表4 分级加载蠕变试验方案
Table 4 Graded loading creep test scheme

试验试件

编号

应力集中

系数K

开挖类型孔隙水压P/MPa初始轴压σ1/MPa初始围压σ3/MPa偏应力σ1-σ3/MPa
等级1等级2等级3等级4等级5
K1-P01未受开挖扰动04.84.00.3σP0.45σP0.6σP0.75σP0.9σP
K1-P0.51未受开挖扰动0.54.84.00.3σP0.45σP0.6σP0.75σP0.9σP
K1-P11未受开挖扰动1.04.84.00.3σP0.45σP0.6σP0.75σP0.9σP
K1-P1.51未受开挖扰动1.54.84.00.3σP0.45σP0.6σP0.75σP0.9σP
K2.6-P02受开挖扰动09.61.60.3σP0.45σP0.6σP0.75σP0.9σP
K2-P0.52受开挖扰动0.59.61.60.3σP0.45σP0.6σP0.75σP0.9σP
K2-P12受开挖扰动1.09.61.60.3σP0.45σP0.6σP0.75σP0.9σP
K2-P1.52受开挖扰动1.59.61.60.3σP0.45σP0.6σP0.75σP0.9σP