基于信息融合技术的岩石单轴压缩破坏特征  

Study on Failure Characteristics of Rock under Uniaxial Compression Based on Information Fusion Technology

作　　者：苗金丽[1] 宫伟力[1] 李德建[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083

出　　处：《矿业研究与开发》2008年第3期22-24,67,共4页Mining Research and Development

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.

关 键 词：红外摄像 声发射 时频特征 单轴压缩 

分 类 号：O319.56[理学—一般力学与力学基础]