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N. Foged

Regional geotechnical railway corridor mapping using airborne electromagnetics

Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  • A. A. Pfaffhuber, NGI
  • ,
  • H. Anschütz, NGI
  • ,
  • T. Ørbech, NGI
  • ,
  • S. Bazin, NGI
  • ,
  • A. O.K. Lysdahl, NGI
  • ,
  • M. Vöge, NGI
  • ,
  • G. Sauvin, NGI
  • ,
  • I. K. Waarum, NGI
  • ,
  • H. C. Smebye, NGI
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  • K. Kåsin, NGI
  • ,
  • G. Grøneng, NGI
  • ,
  • A. L. Berggren, Norwegian National Rail Administration
  • ,
  • J. B. Pedersen
  • N. Foged

The Norwegian National Rail Administration (Jernbaneverket) is planning 230 km of railway construction and upgrades adapting for high speed trains to reduce commuting times to and from Norway's capital Oslo. Parts of the project are in areas with little or no prior geotechnical knowledge. To enable an efficient and economic ground investigation program, we conducted a high-resolution airborne electromagnetic mapping (AEM) campaign covering 600 km2 in summer 2015. The investigation area includes various types of geotechnical and geological challenges and the AEM data contribute to the detailed railway alignment design. Primary delivery is depth to bedrock varying from tens of meters glaciomarine clay to few meters moraine or coarse-grained sediments. Detailed analysis of the final AEM resistivity models leads to quick clay appraisal, alum shale detection and indications for major bedrock weakness zones. A tight integration of accurate geophysical models and sparse geotechnical data is a key element in this project.

Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016
EditorsBarry M. Lehane, Hugo E. Acosta-Martinez, Richard Kelly
Number of pages6
Volume2
PublisherAustralian Geomechanics Society
Publication year1 Jan 2016
Pages923-928
ISBN (Electronic)9780994626127
Publication statusPublished - 1 Jan 2016
Event5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016 - Gold Coast, Australia
Duration: 5 Sep 20169 Sep 2016

Conference

Conference5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016
LandAustralia
ByGold Coast
Periode05/09/201609/09/2016

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