摘要
基于连续介质损伤力学，从Ｎａｊａｒ各向同性脆性损伤的能量定义出发，从能量角度分析了爆炸应力波传播过程中岩石损伤程度的变化，确定了岩石发生层裂的判据，即当入射压缩波尚未反射部分与反射拉伸波叠加后出现的拉应力等于岩石的损伤抗拉强度（本文简称）时，岩石发生层裂。从而弥补了岩石爆破层裂理论的不足，完善了岩石爆破机理。
Based on continuous damage mechanics,and the view of energy dissipation and Najar's energy concept for isotropic brittle damage,the damage of the rock is analyzed during blasting stress waves propagation.Furthermore the rock spalling criterion is defined.The rock appears spalling when tensile stress wave of overlapping non-reflection of incidence compressive wave with reflection tensile wave,is equal to the tensile strength of rock damaged.Hence the deficiency of the rock blasting spalling theory is compensated and the mechanism of rock blasting is improved.
出处
《工程爆破》
1997年第3期1-4,共4页
Engineering Blasting
关键词
岩石爆破
损伤
层裂
Rock blasting Spalling Damage
