Geoelectrical imaging in the interpretation of geological conditions affecting quarry operations

Mimmi K. Magnusson, Joanne M. R. Fernlund, Torleif Dahlin

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Abstract

Determination of the subsurface geology is very important for the rock quarry industry. This is primarily done by drilling and mapping. However, in Sweden, the bedrock is often completely covered by Quaternary sediments, making the prediction quite difficult. This study shows that electrical resistivity imaging together with induced polarization proved to be very efficient in detecting fracture frequency, major fracture zones and variations in rock mass quality, all of which can affect the aggregate quality. These techniques can also determine the thickness of the overburden. Furthermore, by doing 2D-parallel data sampling, a 3D inversion of the dataset is possible, which greatly enhances the visualization of the subsurface. Implementation of geophysics can be a valuable tool for the quarry industry, resulting in substantial economic benefits.
Original languageEnglish
Pages (from-to)465-486
JournalBulletin of Engineering Geology and the Environment
Volume69
Issue number3
DOIs
Publication statusPublished - 2010

Subject classification (UKÄ)

  • Geotechnical Engineering

Free keywords

  • Induced polarization
  • Geophysical methods
  • production
  • Aggregate
  • Electrical resistivity imaging
  • Rock mass quality
  • induced polarization
  • Normalized

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