摘要
本文用系统稳定性理论分析了岩石峰后破坏过程,指出岩石峰后破坏的稳定性与岩石材料的弹模和断裂能、试件的形状尺寸,以及试验环境(试验机刚度、围压等)有关。提高试验控制的灵敏度有利于获取载荷-位移全过程曲线,但并不能改变岩石峰后破坏过程的稳定性。
The post-failure behavior of rock is analysed by a stability theory of system in this paper. It is pointed out that the stability of post-failure behavior of rock is related to the size and geometric parameter of specimen , elastic modulus and fracture energy of rock material, and testing condition such as confining pressure and stiffness of testing machine. To improve the control sensitivity is helpful to obtain complete load-displacement curve of rock specimen, but if can't change the stability of post-failure behavior. Adaptive control improve the control sensitivity, and don't change the stabilty of post-failure behavior of rock specimen.
出处
《中国矿业》
1993年第5期30-33,共4页
China Mining Magazine
关键词
岩石
峰值
后区特性
峰后曲线
Complete curve of rock , Post-failure behavior
