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Tunnel boring machine performance prediction with scaled rock cutting tests

Authors
Journal
International Journal of Rock Mechanics and Mining Sciences
1365-1609
Publisher
Elsevier
Volume
70
Identifiers
DOI: 10.1016/j.ijrmms.2014.04.021
Keywords
  • Tbm
  • Tunnel Boring Machine
  • Rock Cutting
  • Disc Cutter
  • Linear Cutting Machine
Disciplines
  • Design
  • Physics

Abstract

Abstract A scaled rock cutting test is presented. It is designed as an attachment for hydraulic presses commonly available in rock mechanics laboratories. Rotating disc cutters are used to cut rock samples several times with the possibility to adjust indentation depth and spacing. Standard sample sizes, which are available in early phases of a tunnelling project, are used in order to enable this test to be used for tunnel boring machine (TBM) performance prediction. The results are compared to geotechnical standard tests (uniaxial compression, Brazilian tension), full-scale linear cutting tests and TBM operational data. It is shown that scaled rock cutting tests are superior input parameters for TBM performance prediction compared to commonly used geotechnical standard tests.

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