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  • Ernst & Sohn

04. June 2015

Geomechanics and Tunnelling 03/15

cover_geot_15-03.jpgCover Story: Two large projects requiring EPB machines are currently underway using Herrenknecht technology. The photo shows the EPB working to supply the City of Mekka with a new sewer system with segmental lining.

The tunnels measure 1.5 and 1.8 km but the real challenge is given by the radii of 80 m. The second project is the Emscher renaturation project. (photo: Herrenknecht AG)

Table of contens:

  • Prognosis for hard rock TBM tunnelling
  • Transparent face in mechanized hard rock tunnelling
  • Assessment of the LCPC abrasiveness test
  • Double shield TBM drive in granite
  • TBM performance and disc cutter wear prediction
  • Wear and abrasivity in mixed ground
  • Cutting tool wear in soft ground
  • Strain gauges in pre-cast concrete segments

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