摘要
研究岩石破坏机理只就单一测试手段往往缺乏对比性,在进行煤岩和花岗岩的单轴压缩试验的同时,进行了红外摄像和声发射检测。根据单轴压缩试验,获得了应力-应变全过程曲线,对试验过程中的红外图像和声发射信号进行了分析。综合分析结果表明,岩石破坏过程是其能量的转化过程,不同阶段岩石破坏的机制不同;岩石在单轴压缩试验条件下其内部应力状态复杂,破坏过程的演化是从局部破坏到整体破坏的过程。
The study on the failure mechanism of rock only by one test method usually is lacking in contrast. The uniaxial compression tests of coal - rock and granite were carried out, at the same time, the test of infrared imaging and acoustic emission motioning were made on the samples. The complete stress - strain curves of the samples were obtained by the uniaxial compression tests, and the infrared images and acoustic emission signals were analyzed. The results of comprehensive analysis show that the process of rock failure is a process of energy transformation in fact, the failure mechanism of rock is not same in the different phase of fracture, the interior stress field of rock is very complex under uniaxial compression condition, the rock failure is a process of evolution from local crack to whole fracture.
出处
《矿业研究与开发》
CAS
北大核心
2008年第3期22-24,67,共4页
Mining Research and Development
关键词
红外摄像
声发射
时频特征
单轴压缩
Infrared imaging, Acoustic emission, Time -frequency characteristics, Uniaxial compression
