Fractal analysis on the fracture development of sandstone using AE measurement

被引：0
|
作者：
Yang, Z. Y. [1 ]
Huang, T. H. [2 ]
Zhao, Y. X. [3 ]
Tsai, M. C. [2 ]
机构：
[1] Tamkang Univ, Dept Civil Engn, Taipei, Taiwan
[2] Natl Taiwan Univ, Dept Civil Engn, Taipei, Taiwan
[3] China Univ Min & Technol, Dept Civil Engn, Beijing, Peoples R China
来源：
HARMONISING ROCK ENGINEERING AND THE ENVIRONMENT | 2012年
关键词：
Rock failure; rock property; lab testing; fractals;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The location of acoustic emission (AE) sources during rock deformation has proven to be a useful non-destructive analytic technique. In this study, the three-dimensional location and energy of each AE event for sandstone were determined during uniaxial compression. The correlation dimension based on fractal concept is adopted to quantitatively describe the development of microcracks before rock failure. It shows that rock micofracture in compression is clustered in small region observed from the changes of correlation dimensions. The correlation dimension tends to increase before peak strength. Therefore, the correlation dimension accompanied with the AE rate will be a precursor of a dramatic fracturing.
引用
收藏
页码：227 / 231
页数：5
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