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Design-of-sequential-excavation-method-for-large-span-urban-tunnels-in-soft-ground-–-Niayesh-tunnel_2013_Tunnelling-and-Underground-Space-Technology.pdf

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Design-of-sequential-excavation-method-for-large-span-urban-tunnels-in-soft-ground-–-Niayesh-tunnel_2013_Tunnelling-and-Underground-Space-Technology

Tunnelling and Underground Space Technology 35 (2013) 178–188 Contents lists available at SciVerse ScienceDirect Tunnelling and Underground Space Technology journal homepage: /locate/tust Design of sequential excavation method for large span urban tunnels in soft ground – Niayesh tunnel Mostafa Sharifzadeh a,⇑, Farshad Kolivand b, Masoud Ghorbani a,c, Shahaboddin Yasrobi d a Department of Mining and Metallurgy Engineering, Amirkabir University of Technology, Tehran, Iran b Department of Mining Engineering, Sahand University of Technology, Tabriz, Iran c P.O.R Consulting Co., Tehran, Iran d Department of Civil and Environmental Engineering, University of Tarbiat Modarres, Tehran, Iran a r t i c l e i n f o a b s t r a c t Article history: Modern tunnel design and construction requires appropriate techniques and technologies during all Received 31 July 2012 phases of a tunnel project. Selecting a suitable excavation procedure for large span urban tunnel projects Received in revised form 21 December 2012 in soft ground is a key factor for successful construction of the project. The costs and time for tunnel con- Accepted 4 January 2013 struction are strongly inﬂuenced by the choice of the excavation procedure. This research focuses on the Available online 27 February 2013 selection of excavation method, excavation sequence and optimum trailing distance between different excavation stages in soft ground urban tunnelling. Considering soft ground condition and the big cross Keywords: