Improvements in blast fragmentation models using digital image processing

J. Kemeny, E. Mofya, R. Kaunda, G. Perry, B. Morin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

This paper presents an approach for developing accurate models to predict the fragmentation due to blasting. The approach makes use of drill monitoring data, which provides data throughout the rock mass to be blasted and is therefore superior to traditional data-gathering methods such as diamond core or field sampling. The approach also makes use of the Split image processing software for assessing post-blast fragmentation and the crushability and grindability of the ore. Finally the approach makes use of the explosive energy per unit volume of rock. These three types of data are collected and analyzed on a hole-by-hole basis, giving 50 or more data points for each blast. These data points form the basis for a statistical correlation between in-situ conditions, blasting parameters, and the resulting fragmentation size and strength. At a specific mine, the database is continually updated as mining progresses, resulting in an evolving and increasingly accurate model with time. Some sample results from the Phelps Dodge Sierrita mine are presented.

Original languageEnglish (US)
Title of host publicationDC Rocks 2001 - 38th U.S. Symposium on Rock Mechanics (USRMS)
Editors Elsworth, Tinucci, Heasley
PublisherAmerican Rock Mechanics Association (ARMA)
Pages361-367
Number of pages7
ISBN (Print)9026518277, 9789026518270
StatePublished - 2001
Event38th U.S. Symposium on Rock Mechanics, DC Rocks 2001 - Washington, United States
Duration: Jul 7 2001Jul 10 2001

Publication series

NameDC Rocks 2001 - 38th U.S. Symposium on Rock Mechanics (USRMS)

Other

Other38th U.S. Symposium on Rock Mechanics, DC Rocks 2001
CountryUnited States
CityWashington
Period7/7/017/10/01

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

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    Kemeny, J., Mofya, E., Kaunda, R., Perry, G., & Morin, B. (2001). Improvements in blast fragmentation models using digital image processing. In Elsworth, Tinucci, & Heasley (Eds.), DC Rocks 2001 - 38th U.S. Symposium on Rock Mechanics (USRMS) (pp. 361-367). (DC Rocks 2001 - 38th U.S. Symposium on Rock Mechanics (USRMS)). American Rock Mechanics Association (ARMA).