摘要
本文研究了岩石在单轴和真三轴加载的破坏过程与声波参数及动力学参数之间的关系。在单轴和三轴压缩实验中,通过测量纵横波速度和振幅的变化,有效地判断岩石加载和结构的变化情况,确定岩石加载破坏过程中的几个阶段,实现对岩石破裂前兆的预测。本文还研究了三轴压缩实验中中间主应力σ_2的改变对声波速度和振幅变化曲线的影响。
This paper deals with varying laws of the acoustic and the dynamical mechanical parameters in the process of rock failure under loading.By measuring the changes of the acoustical velocity and amplitude,the changes of the loading and construction in rock can be defined,the various stages during loading and fracture can be determined and the rock failure can be predicted.In addition,the paper discusses the influence of the medium main stress σ_2 to acoustical velocity and amplitude in true triaxial compression tests.
出处
《岩土力学》
EI
CAS
CSCD
1992年第1期51-56,共6页
Rock and Soil Mechanics
关键词
岩石
破裂
声波参数
加载
acoustic parameters
loading
rock failure
