On the way to a better performance prediction for small-diameter hard rock TBMs

G. Lehmann, H. Käsling, K. Thuro

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Small diameter tunneling in hard rock gets increasingly widespread due to the surge of renewables energies and the need for new and longer utility tunnels. The large variety in this small diameter range in hard rock includes different TBM types, cutterhead designs, cutter types and most notably geotechnical conditions. Predicting the advance rate for such project conditions in hard rock is an important factor in tunnel project planning and execution. Data from more than 35 small diameter hard rock tunneling pipe jacking and segment lining projects has been compiled and analyzed. Our analysis showed that the achieved performance for such projects varies considerably from the prediction with industry-standard penetration models. This paper will give an insight into the wide variability of small diameter hard rock tunneling and the associated challenges in performance prediction.

Original languageEnglish
Title of host publicationExpanding Underground - Knowledge and Passion to Make a Positive Impact on the World- Proceedings of the ITA-AITES World Tunnel Congress, WTC 2023
EditorsGeorgios Anagnostou, Andreas Benardos, Vassilis P. Marinos
PublisherCRC Press/Balkema
Pages1328-1336
Number of pages9
ISBN (Print)9781003348030
DOIs
StatePublished - 2023
EventITA-AITES World Tunnel Congress, ITA-AITES WTC 2023 and the 49th General Assembly of the International Tunnelling and Underground Association, 2023 - Athens, Greece
Duration: 12 May 202318 May 2023

Publication series

NameExpanding Underground - Knowledge and Passion to Make a Positive Impact on the World- Proceedings of the ITA-AITES World Tunnel Congress, WTC 2023

Conference

ConferenceITA-AITES World Tunnel Congress, ITA-AITES WTC 2023 and the 49th General Assembly of the International Tunnelling and Underground Association, 2023
Country/TerritoryGreece
CityAthens
Period12/05/2318/05/23

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