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Die Swebrec Funktion: Eine neue Korngrößenverteilungs-funktion und ihr praktisescher Einsatz in der Sprengtechnik
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
2006 (German)In: Berg- und Huttenmännische Monatshefte (BHM), ISSN 0005-8912, E-ISSN 1613-7531, Vol. 151, no 10, 389-404 p.Article in journal (Refereed) Published
Abstract [en]

The paper presents a new particle size distribution function, called the Swebrec function discovered during the work with the EU project Less Fines project. The function has just three parameters, with physical meaning, in its basic form. Yet it covers a size range of 2­3 orders in magnitude of fragment size and even more in an extended version. It has been tested on hundreds of sets of sieving data from different kinds of blasting and crushing of many different kinds of rock. The coefficient of determination r2 has in 95 % of the cases been better than 0.995, many times substantially better. Examples of such curve fits are given and the relation of the Swebrec function to traditional comminution concepts like the NBC concept, the t10 concept and the GGS-slope will be pointed out. Applications such as an extrapolation from the coarse range to the fines and vice versa will be shown and as will how the Swebrec function could be used to construct the fragment size distribution for muck piles from full-scale blasts, based on limited data. A final remark on how to implement the Swebrec distribution into fragmentation models will be given.

Place, publisher, year, edition, pages
2006. Vol. 151, no 10, 389-404 p.
Keyword [en]
Civil engineering and architecture - Geoengineering and mining engineering
Keyword [sv]
Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik
Research subject
Mining and Rock Engineering
URN: urn:nbn:se:ltu:diva-13294Local ID: c7dae1f0-9130-11db-8975-000ea68e967bOAI: diva2:986247
Validerad; 2006; 20061221 (ysko)Available from: 2016-09-29 Created: 2016-09-29Bibliographically approved

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