Instability Conditions of Saturated Rocks Under Anti-Plane Shear

摘要：

Instability analysis about saturated rocks is carried out to understand the initiation and evolution of rock landslides and rock-falling. The spatial development of a single shear band in saturated rocks for anti-plane shear deformation is mainly investigated here. It is shown that if the angle between the proportional loading path and the direction of the localization △θ2=π/2, then the deformation is stable. This corresponds to the case of neutral loading. The case △θ2>π/2 corresponds to elastic unloading. △θ2<π/2 corresponds to loading and the instability develops the fastest when △θ is equal to zero. Positive solutions for α require that the rate of pore pressure softening exceed the rate of strain hardening.

关键词： Localization saturated Rocks anti-plane shear perturbation analysis

作者: Lu Xiaobing Peng Cui

作者单位: Institute of Mechanics, Chinese Academy of Sciences, 100080, Beijing, China Institute of Mountain Hazard and Environment, Chinese Academy of Sciences, 610041, Chengdu, China

会议类型: 国际会议

会议名称: 2009年岩石力学国际研讨会

会议地点: 香港

会议语种:英文

页码: 1-5

在线出版日期: 2009-05-19（万方平台首次上网日期，不代表论文的发表时间）