Distinct element modelling of fracture plan control in continuum and jointed rock mass in presplitting method of surface mining

Mansour Sharafisafa, Zeinab Aliabadian, Rezvan Alizadeh, Ali Mortazavi

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Controlled blasting techniques are used to control overbreak and to aid in the stability of the remaining rock formation. Presplitting is one of the most common methods which is used in many open pit mining and surface blast design. The purpose of presplitting is to form a fracture plane across which the radial cracks from the production blast cannot travel. The purpose of this study is to investigate of effect of presplitting on the generation of a smooth wall in continuum and jointed rock mass. The 2D distinct element code was used to simulate the presplitting in a rock slope. The blast load history as a function of time was applied to the inner wall of each blasthole. Important parameters that were considered in the analysis were stress tensor and fracturing pattern. The blast loading magnitude and blasthole spacing and jointing pattern were found to be very significant in the final results.

Original languageEnglish
Pages (from-to)871-881
Number of pages11
JournalInternational Journal of Mining Science and Technology
Volume24
Issue number6
DOIs
Publication statusPublished - Nov 1 2014

Keywords

  • Continuum and jointed rock mass
  • Controlled blasting
  • Distinct element modelling
  • Presplitting method

ASJC Scopus subject areas

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

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