NDLI: Analysis of stress level during longwall mining of a coal seam with the use of seismic effect method

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Analysis of stress level during longwall mining of a coal seam with the use of seismic effect method

Content Provider	Scilit
Author	Wojtecki, Ł Gołda, I.
Copyright Year	2019
Description	Journal: Iop Conference Series: Earth and Environmental Science The paper presents an estimation of the effectiveness of long-hole destress blasting during longwall mining of the upper layer of coal seam No. 504 in one of the hard coal mines in the Polish part of the Upper Silesian Coal Basin. The estimation was based on the seismic effect method. The exploitation in concern proceeded under variable geological and mining conditions, mostly in the rock mass destressed by an earlier exploitation of the coal seam No. 506 (approx. 15-38 m below), under the influence of the edges of coal seams No. 418 and 502 (approximately 99-104 m and 30-52 m above) and near the diagonal fault with a throw of 110 m. The results have been compared with the seismic effects of the long-hole destress blasting executed during earlier longwall mining of the coal seam No. 506 in this area. The influence of extraction of the coal seam No. 506 on the stress level reduction was estimated according to the seismic effect method. Similarly, the manner in which the edges in coal seams No. 502 and 418 had an impact – despite the rock mass relaxation effect – on the stress level increase during longwall mining of the upper layer of coal seam No. 504, has been determined.
Related Links	https://iopscience.iop.org/article/10.1088/1755-1315/261/1/012057/pdf
ISSN	17551307
e-ISSN	17551315
DOI	10.1088/1755-1315/261/1/012057
Journal	Iop Conference Series: Earth and Environmental Science
Issue Number	1
Volume Number	261
Language	English
Publisher	IOP Publishing
Publisher Date	2019-04-26
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Earth and Environmental Science Mining and Mineral Processing Seismic Effect Method Mining of a Coal Seam
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Physics and Astronomy Environmental Science

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