DOI: 10.1007/s11069-021-04822-6
论文题名: Experimental investigation on synergetic prediction of rockburst using the dominant-frequency entropy of acoustic emission
作者: Wang C. ; Cao C. ; Liu Y. ; Li C. ; Li G. ; Lu H.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 108, 期: 3 起始页码: 3253
结束页码: 3270
语种: 英语
中文关键词: Acoustic emission
; Dominant frequency
; Entropy
; Rockburst
; Synergetic prediction
英文关键词: Indicator indicator
英文摘要: Rockburst is one of the critical safety concerns for underground engineering. The acoustic emission (AE) activity that occurs during rockburst is one of its notable characteristics. Because rockburst is induced by complexity factors, the prediction of rockburst has been investigated widely, yet few methods have been applied in depth. In this study, dynamic process of rockburst was investigated, and the information entropy of the dominant frequency was determined to be an indicator of rockburst. A series of true triaxial tests were conducted, and AE signals associated with the evolution of rock failure were collected. The AE data were treated with the fast Fourier transform to acquire the dominant frequency. Then, the information entropy of the dominant frequency was obtained, and a significant drop of the entropy value right after it reached the peak was observed. Finally, based on the comprehensive analysis of AE energy, dominant-frequency entropy, and other precursory information of rock failure, a multiparameter synergetic method of predicting rockburst is proposed. This research has important theoretical significance for improving the prediction accuracy of rockburst. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169435
Appears in Collections: 气候变化与战略
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作者单位: School of Energy and Mining Engineering, China University of Mining and Technology Beijing, Ding 11, Xueyuan Road, Haidian District, Beijing, 100083, China; Center for Underground Construction and Tunnelling, Colorado School of Mines, Golden, CO 80401, United States
Recommended Citation:
Wang C.,Cao C.,Liu Y.,et al. Experimental investigation on synergetic prediction of rockburst using the dominant-frequency entropy of acoustic emission[J]. Natural Hazards,2021-01-01,108(3)