Evaluation of the Atlas Copco relation between burden and blast-hole diameter and rock strength at bench blasting - a case study

R. R. Tatiya, A. Al Ajmi

Research output: Contribution to journalArticle

Abstract

In surface mines, a successful blast design provides a sufficient quantity of suitably fragmented and properly placed muck at the lowest practical cost. One of the significant variables in such blast designs is the 'burden'. This paper outlines an empirical formula to determine the burden for blast-hole diameters in the range of 25 to 304 mm based on the uniaxial compressive strength of the rock using ANFO as the main explosive charge. The formula has been tested at two working limestone mines in the Sultanate of Oman and it has given very positive results. Thus, besides its possible application for the new mines, the formula can be used to check the existing burden at any working mine.

Original languageEnglish
Pages (from-to)151-160
Number of pages10
JournalInternational Journal of Surface Mining, Reclamation and Environment
Volume14
Issue number2
Publication statusPublished - 2000

Fingerprint

Blasting
blasting
atlas
rocks
Rocks
case studies
Oman
limestone
rock
Limestone
compressive strength
Compressive strength
explosive
evaluation
Evaluation
Burden
cost
Costs

Keywords

  • Bench blasting
  • Blasthole diameter
  • Rock strength
  • Surface mines

ASJC Scopus subject areas

  • Soil Science
  • Management of Technology and Innovation
  • Earth-Surface Processes
  • Geology
  • Geotechnical Engineering and Engineering Geology

Cite this

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AB - In surface mines, a successful blast design provides a sufficient quantity of suitably fragmented and properly placed muck at the lowest practical cost. One of the significant variables in such blast designs is the 'burden'. This paper outlines an empirical formula to determine the burden for blast-hole diameters in the range of 25 to 304 mm based on the uniaxial compressive strength of the rock using ANFO as the main explosive charge. The formula has been tested at two working limestone mines in the Sultanate of Oman and it has given very positive results. Thus, besides its possible application for the new mines, the formula can be used to check the existing burden at any working mine.

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