NDLI: Excavating through hard rock formations with TBM: Technical challenges of the Follo Line Project

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Excavating through hard rock formations with TBM: Technical challenges of the Follo Line Project

Content Provider	Scilit
Author	Giacomin, G. Mariotti, A. Ortu, M.
Copyright Year	2019
Description	The Follo Line Project is Norway's largest infrastructure project and Scandinavia's longest railway tunnel. Excavation is done by four Double Shield Tunnel Boring Machines (DS TBMs) all with a diameter of 9.96 m. It is the first tunnel in Norway built with a precast segment lining. Excavation in the Norwegian extreme hard rock conditions with ground water has defined the main challenges of the Project. The experience gained so far, at a progress of 83% on the TBM drives, has been extremely positive. TBM penetration, cutter wear and TBM advance rates are well within the expectations. The management of ground water has been more of a challenge than expected. To control water inflow, pre-excavation grouting has been successfully performed although compromising the TBM advance rate but with satisfying results. Book Name: Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art
Related Links	https://api.taylorfrancis.com/content/chapters/edit/download?identifierName=doi&identifierValue=10.1201/9780429424441-228&type=chapterpdf
Ending Page	2165
Page Count	10
Starting Page	2156
DOI	10.1201/9780429424441-228
Language	English
Publisher	Informa UK Limited
Publisher Date	2019-04-17
Access Restriction	Open
Subject Keyword	Book Name: Tunnels and Underground Cities: Engineering and Innovation Meet Archaeology, Architecture and Art Environmental Engineering Microscopic Research Tbm Extremely Excavation Tunnel Follo Line Project Norway Rock Hard
Content Type	Text
Resource Type	Chapter

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