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3 开挖卸荷预试验方案

Table 3 Pre-test scheme of excavation unloading

原岩轴向应力/MPa 原岩径向应力/MPa 应力集中系数K 开挖卸荷后轴向应力/MPa 开挖卸荷后径向应力/MPa 4.8 4.0 1 4.8 4.0 2 9.6 1.6