Prediction and Actual Oversized/Undersized Fragmentation in Underground Blasting

Autor:	E. V. Shevnina, A. K. Kirsanov, G. S. Kurchin, A. A. Kytmanov, S. A. Vokhmin, G. P. Erlykov
Rok vydání:	2021
Předmět:	Mining engineering Metals and Alloys Fragmentation (computing) Environmental science Geology Geotechnical Engineering and Engineering Geology Rock blasting
Zdroj:	Journal of Mining Science. 57:210-219
ISSN:	1573-8736 1062-7391
Popis:	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 actual 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97c8f86ea80dbb1c727aa81d8437de8b https://doi.org/10.1134/s1062739121020058 Zobrazit plný text záznamu Plný text ve formátu PDF