Microstructure of Coal before and after Gas-Dynamic Phenomena

被引：0
|
作者：
E. V. Ul’yanova
O. N. Malinnikova
B. N. Pashichev
E. V. Malinnikova
机构：
[1] Russian Academy of Sciences,Academician Melnikov Research Institute of Comprehensive Exploitation of Mineral Resources
[2] Moscow State University of Geodesy and Cartography,undefined
来源：
Journal of Mining Science | 2019年 / 55卷
关键词：
Coal; gas-dynamic phenomena; outburst-hazardous and outburst-nonhazardous zones; digital images of coal surface; statistical entropy and complexity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The applicability of calculated information entropy to quantification of coal structure nonuniformity at a microlevel is demonstrated. The calculations used digital images of coal surface from scanning electron microscopy after thousandfold increase. The calculated statistical entropy-complexity values enable comparing structural nonuniformity of coal sampled from outbursts, as well as from outburst-hazardous and outburst-nonhazardous zones. It is found that coal from outburst-hazardous zones contain areas of highly chaotic structure as against the ordered structure of coal from outburst-nonhazardous zones. Outburst coal is free from chaotic structures though its structure is less ordered than in coal from outburst-nonhazardous zones. The proposed method allows detecting the certainly outburst-nonhazardous zones in coal seams using digital images of coal samples.
引用
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页码：701 / 707
页数：6
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