Reliability analysis for mine blast performance based on delay type and firing time

Jhon Silva, Lifeng Li, Jeremy M. Gernand

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Mining blasts may be defined as the use of explosive charges in a controlled manner by following a tightly controlled timing sequence according to an assigned firing order. Changes of timing between charges may result in an altered firing order and failure of the blasting sequence, which can cause high vibration levels, poor fragmentation, and/or an undesirable rock mass movement direction. Despite the importance of timing in determining mine blast results, there exists a lack of methodologies or tools with which to assess performance of a complete blast based on delay type and timing sequence. This document applies reliability engineering principles to evaluate the performance of a mine blast. The analyses are based on test results of the accuracy and precision of electronic and pyrotechnic detonators for typical firing times used in a surface coal mine, but may be applied to a variety of mines and timing scenarios.

Original languageEnglish
Pages (from-to)195-204
Number of pages10
JournalInternational Journal of Mining Science and Technology
Volume28
Issue number2
DOIs
StatePublished - Mar 2018

Bibliographical note

Publisher Copyright:
© 2017

Keywords

  • Blast
  • Monte Carlo simulation
  • Reliability
  • Risk analysis
  • Scatter
  • Timing sequence

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology

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