Тип публикации: статья из журнала
Год издания: 2021
Идентификатор DOI: 10.1134/S1062739121020058
Ключевые слова: blast, blasthole, chamber, drilling-and-blasting, explosive charge, fragmentation, grain-size composition, oversize/undersize, rock fracture, statistical processing
Аннотация: Abstract: The blasting experience in Zapolyarny Mine is described, and the actual oversized/undersized fragmentation of blasting from haulage drift is presented. The drilling-and-blasting pattern parameters provide insufficient fragmentation quality, which elevates the blasting cost and reduces its efficiency. It is shown that the Показать полностьюactual oversized/undersized fragmentation agrees with the Kuz–Ram fragmentation model. This allows adjusting the calculation parameters of uniformity index for the prediction and optimization of grain-size composition in broken muck. Possible causes of oversized/undersized fragmentation are discussed. © 2021, Pleiades Publishing, Ltd.
Журнал: Journal of Mining Science
Выпуск журнала: Vol. 57, Is. 2
Номера страниц: 210-219
ISSN журнала: 10627391
Издатель: Pleiades journals