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Keywords: longwall face
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Proceedings Papers
Rockburst Prevention via Destress Blasting of Competent Roof Rocks in Hard Coal Longwall Mining
Available to Purchase
Paper presented at the ISRM AfriRock - Rock Mechanics for Africa, October 3–5, 2017
Paper Number: ISRM-AFRIROCK-2017-035
..., unfavourable stress field due to long-term mining). Destress blasting stages were carried out in a group of boreholes (4–8; diameter 95 mm) with the total explosive charge ranging from 2100 kg to 3750 kg, detonated regularly at a distance of 43 m to 114 m ahead of the advancing longwall face. Evaluation...
