Abstract
AbstractJust south of Oslo Central Station the new high-speed Follo Line railway tunnels pass beneath the existing Ekeberg road tunnels. This paper presents the numerical model, and monitoring program used to evaluate the stability of the E6 road tunnels during the excavation of the Follo Line tunnels at only less than 4 m below. The construction of the Follo Line was approved subject to three conditions: (1) There should be no negative effect on the stability of the Ekeberg tunnels, (2) The traffic flow in the Ekeberg tunnels must be maintained at all times and (3) Any risk of instability in the existing tunnels must be detected beforehand so that necessary precautionary action could be taken in good time. In order to deal with the challenges, SINTEF has developed a comprehensive rock engineering toolbox, combining Investigation—Numerical model—Monitoring. The tool has been used successfully in this project to provide adequate information for excavation planning and control the situation to detect any unexpected situation.KeywordsMetro tunnelNumerical modelTunnel monitoring
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
