Numerical simulation on the delivery law of gob gas of fully mechanized caving face

According to the cover rock caving features, the gob of fully mechanized caving face was divided into 3 zones： natural collected zone, pressure effecting zone and press stable zone. Based on these and the gob gas flow control equation, and considered the influence to the mining fissured zone of gas...

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Bibliographic Details
Published in:Journal of coal science & engineering, China China, 2008-09, Vol.14 (3), p.403-406
Main Author: 李树刚 张伟 林海飞
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Geochemistry
Geology
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Mechanical Engineering
数字模拟
机械开采
煤层特点
采煤方法
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Summary:According to the cover rock caving features, the gob of fully mechanized caving face was divided into 3 zones： natural collected zone, pressure effecting zone and press stable zone. Based on these and the gob gas flow control equation, and considered the influence to the mining fissured zone of gas drainage, also made use of CFD software, we found an not uniform 3D numerical model of gob gas seepage and got the gas emission law in gob of fully mechanized caving face （with or without discharge measures）, and this can guide the engineering practice in some aspects.
ISSN:1006-9097
1866-6566
DOI:10.1007/s12404-008-0089-y