Geoelectrical imaging for aggregate quality investigations
2008 (English)In: Near Surface 2008 - 14th European Meeting of Environmental and Engineering Geophysics, European Association of Geoscientists and Engineers, 2008Conference paper (Refereed)
In the aggregate industry the use of geophysical measuring is rare. The aim of this project is to investigate how geophysical instruments can be a tool in prospecting for rock quarries, and also how they can be a help in which direction they should expand in. To have control over the quality of the aggregates is important and therefore to know when the rock mass is changing is of interest for the production. Three quarries, with different properties, were investigated with different geophysical methods, of which only the result from the resistivity and IP measurement is presented here. The fracture frequency was measured as well for comparison. The depth to the bedrock is visible in the inverted resistivity sections for the three sites, and an estimation of the quantity of the till is possible to make from the 3D-inversions. It is also shown that the fracture frequency affects the resistivity of the bulk mass. The results also show that the resistivity imaging is well suited for detecting anomalies in the rock mass, which might affect the production. This is especially clear in one of the quarries where a dolerite dyke is clearly visible in the combined resistivity and IP results.
Place, publisher, year, edition, pages
European Association of Geoscientists and Engineers, 2008.
Geophysics, Meteorological instruments, Quarries, Rock mechanics, Aggregate industries, Bulk mass, Fracture frequency, Geoelectrical, Geophysical methods, Resistivity imaging, Rock mass, Rock quarry
IdentifiersURN: urn:nbn:se:kth:diva-157835ScopusID: 2-s2.0-84912149275OAI: oai:DiVA.org:kth-157835DiVA: diva2:772486
14th European Meeting of Environmental and Engineering Geophysics of the Near Surface Geoscience Division of EAGE, Near Surface 2008, 15 September 2008 through 17 September 2008, Krakow, Poland
QC 201412172014-12-172014-12-172014-12-17Bibliographically approved