Mineralogical, Mechanical, and Electrical Properties of Clays and Their Relation to Clogging during Mechanical Tunnel Driving

One of the problems that can occur while boring through fine-grained soil is the adherence of clay to the EPB cutting wheel, inside the excavation chamber or in the transportation line, which might lead to long delays. Since the economic success of a tunneling project depends highly on the clogging potential of the encountered clay formations, it is of vital importance to understand this phenomenon and find possible solutions. Currently, there is no effective soil conditioning technique based on scientific data. The aim of this paper is to show how the mineralogical properties of clays play an important role for the mechanical and adhesive response. Mechanical laboratory tests, zeta (ζ) potential measurements, calculations, and clogging tests were performed to link the adhesive properties with the clay mineralogical composition.


  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 495-504
  • Monograph Title: Geo-Congress 2014 Technical Papers: Geo-Characterization and Modeling for Sustainability

Subject/Index Terms

Filing Info

  • Accession Number: 01522579
  • Record Type: Publication
  • ISBN: 9780784413272
  • Files: TRIS, ASCE
  • Created Date: Mar 25 2014 3:03PM