A Review on Application of Acoustic Emission in Coal—Analysis Based on CiteSpace Knowledge Network

Abstract

Based on CiteSpace software, this paper reviews and analyzes the application articles of acoustic emission in coal from 2010 to 2020. In this paper, CiteSpace software visualizes 453 articles collected in the Web of Science core database. The cooperation networks between different countries, institutions, and authors are used to determine the connection of knowledge in papers. The keyword co-occurrence, keyword co-occurrence time zone map, and keyword clustering are used to determine the hot topics in the field. The cited collaborative network analysis reveals the important literature and the contribution of prominent authors in this area. In the future, for the research of acoustic emission in coal mining, compression tests will still be the main test methods. In terms of time domain parameters of acoustic emission, the application of ring counting, energy, waveform, and signal strength are very mature. The principal problem of acoustic emission location operation will become a focus in the future. The most widely used patterns in the determination of ruptures are the signal intensity fractal dimension, the acoustic emission number, and the b-value. In practical engineering problems, there is little research on the deformation activity law of steeply inclined coal seams and surrounding rock. The mining of steeply inclined coal seams is still a difficult problem. There are immature technologies in coal mining, rockburst early warning, and coal and gas outburst. In terms of the intellectualization and accuracy based on experience, there is room for improvement in the future. Scholars will continue a deeper exploration on the application of the numerical simulation.

Spatiotemporal Evolution and Frontier Focus Analysis Based on Coal Fire Control Body of Knowledge

“…The advantages of detection methods currently used in this field are analyzed. Zhao et al [43] systematically combed and analyzed the academic literature on the application of acoustic emission technology in coal published worldwide from 2010 to 2020 in-depth using the visual analysis software CiteSpace. The results show that the time domain parameters of AE, such as cycle count, energy, waveform, and signal intensity, have reached a mature level.…”

Research Progress and Hot Spot Analysis of the Propagation and Evolution Law of Prefabricated Cracks in Defective Rocks

“…It was concluded that the coupling effects of multiple fields in rock mechanics and the engineering application of mature research outcomes would be the key focus of future freeze–thaw rock mechanics research. Zhao [ 22 ] conducted analysis and organizational research on the acoustic emission of steeply inclined coal using bibliometric software. The research findings have mainly been applied in geological surveys, mineral resource extraction, nuclear waste storage, and other related areas.…”

Bibliometric analysis on mercury emissions from coal-fired power plants: a systematic review and future prospect

“…It has been widely used in many research elds such as information science, medicine, and environmental science (Chen et al, 2012;Hou et al, 2018;Zhu and Hua, 2017). Chao et al reviewed heavy metal pollution in CFPPs using bibliometric studies and the results showed that the recent hotspots were harmful trace elements and speciation analysis (Chao et al, 2021). Although atmospheric mercury is the most frequent keyword in this knowledge eld, there is still a gap in the metrological analysis of the subcategory of mercury emissions from CFPPs.In this study, we utilized the bibliometric software CiteSpace and the date from the Web of Science (WOS) core collection to analyze the knowledge structure of mercury emissions from CFPPs from 2000 to 2022.…”