Acoustic Emission and Electromagnetic Radiation of the Coal-Rock Composite under Uniaxial Compression

被引：0
|
作者：
Zhang, Junwen [1 ]
Chen, Yulong [1 ,2 ]
Bu, Xiaohu [1 ]
Song, Zhixiang [1 ]
机构：
[1] China Univ Min & Technol Beijing, Sch Energy & Min Engn, Beijing 100083, Peoples R China
[2] Chinese Inst Coal Sci, Beijing 100013, Peoples R China
来源：
INDIAN GEOTECHNICAL JOURNAL | 2024年
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Coal-rock composite; Acoustic emission; Electromagnetic radiation; Crack; FAILURE BEHAVIOR; STRESS; MODEL;
D O I：
10.1007/s40098-024-01022-4
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The present study conducts uniaxial compression experiments to explore the mechanical behavior and internal damage evolution of the coal-rock composite. Acoustic emission (AE) and electromagnetic radiation (EMR) responses are synchronously recorded during the loading process. Subsequently, the corresponding b-value and fractal dimension are calculated. Moreover, failure patterns are presented to examine the crack development. Then the potential application of AE and EMR is discussed. The results indicate that the abnormal evolution of the b-value and fractal dimension of AE and EMR can be utilized as an effective index for the failure of the composite.
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页数：8
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