Analysis of progressive failure of pillar and instability criterion based on gradient-dependent plas

• 作 者: 王学滨
• 机 构: DepartmentofMechanicsandEngineeringSciences
• 出 处: 中南工业大学学报：英文版
• 发表日期: 2004年4期
• 关键词: 不稳定度准数 应变软化 矿柱 应变定位 剪切带 逐步损坏 岩层突裂 instability criterion strain softening pillar
• 基金项目: 国家自然科学基金

A mechanical model for strain softening pillar is proposed considering the characteristics of progressive shear failure and strain localization. The pillar undergoes elastic, strain softening and slabbing stages. In the elastic stage, vertical compressive