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TBM DIGS 2022 - Tunnel Boring Machines in Difficult Ground

From 23 to 25 November 2022, the 5th International Conference on Tunnel Boring Machines in Difficult Ground (TBM DiGs 2022) will be held at the University of Leoben in Austria.

TBM DiGs is an international conference series that provides a specialized technological forum for discussing and exchanging knowledge related to TBM works in difficult ground conditions. This series covers a wide range of topics, including characterization of difficult ground, field observations and case studies, physical and laboratory tests, numerical modelling and techniques, treatments of difficult ground, TBM design and installation, tunnel support design, monitoring and risk management. TBM DiGs 2022 is the fifth conference in this series. TBM DiGs 2022 is jointly organized by Montanuniversität Leoben and OEGG (Austrian Society for Geomechanics). The conference organizers would like to welcome researchers and practitioners involved with TBM tunnelling to TBM DiGs 2022 to share, to cooperate, and to progress. The TBM DiGs 2022 will be a hybrid event and both, speakers and attendees, can choose to attend online or live. Provisions will be made for both options.



The conference aims to bring together all who are interested in the use of tunnel boring machines in difficult ground, to review developments in the field over the previous two years, and to attempt to extrapolate for the near-term future. We anticipate that the conference will explore a great variety of topics. Presentations in the following areas are invited:

  • Rock - Very Hard and Abrasive rocks
  • Rock - Squeezing ground
  • Rock - Long and deep tunnels Soil - Sticky soil and Clogging
  • Soil - Abrasive sand and wear problems
  • Soil - High water pressure – hyperbaric challenges
  • Mixed Ground conditions Innovation
  • New Technology (construction chemicals, sensory systems, big data, operational simulation)
  • High Groundwater inflow / Gassy tunnels
  • Extreme TBM tunneling (very small/big TBMs, remote areas, outer space construction)
  • Manufacturing challenges and new developments
  • Logistics and Site Management for challenging TBM tunneling



The Conference provides an excellent opportunity for sharing knowledge through presentations. The Conference plans to accept submittals for oral presentation and for poster presentation. Please refer to the schedule presented below for information relating to important dates for the submittal and review process.

An abstract for each presentation, either oral or poster, must be submitted for review and acceptance. All abstracts and manuscripts shall be submitted to the Conference staff via the submission form below. The abstracts are limited to 300 words and, after acceptance, the manuscripts will be limited to 2 to 6 pages.



15.11.2021: Deadline for abstract submission
15.06.2022: Deadline for full paper submission
01.05.2022: Early bird registration opens
15.08.2022: Early bird registration ends
18.11.2022: End of regular registration

You will find much more information on the conference homepage and in the event flyer.