Rock mass characterization and primary support design for the Boztepe Tunnel, Turkey

2005-12-01
Sopaci, E.
Akgün, Haluk
Akinci, M.
The Ordu province in local scale and northeastern Turkey in regional scale comprise of volcanic arc related rock masses. These modes of origin accommodate both volcanic and flysch type rock masses that have transitions so often with each other. The Boztepe tunnel will mostly be driven through this type of lithol-ogy. In order to assess the rock masses surrounding the tunnel from a geotechnical point of view; surface, subsurface and laboratory investigations have been implemented. Internationally accepted rock mass classification systems (RMR, NGI-Q-system and GSI) have been utilized via information gathered mostly from surface geo-technical investigations. In an attempt to check the validity of the empirical tunnel supports, stress analyses around the tunnel openings have been executed through employing finite element analyses by the Phase 2 package program. Kinematical and limit equilibrium analyses of the tunnel portals have been employed for portal slope stability considerations.
2005 ITA-AITES World Tunnel Congress and 31st General Assembly, 7 May 2005 through 12 May

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Citation Formats
E. Sopaci, H. Akgün, and M. Akinci, “Rock mass characterization and primary support design for the Boztepe Tunnel, Turkey,” Istanbul, Turkey, 2005, vol. 2, p. 141, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87032.