Keywords pillar in hard rock mass;stability;initial geometrical imperfection;initial geological flaw;damage;fracture;catastrophe;subcritical crack growth;time dependence;

• 硬岩矿柱;稳定性;初始几何缺陷;初始地质缺陷;损伤;断裂;突变;亚临界裂纹扩展;时间相依性;