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Abstract: Trabzon City Pass Kanuni Boulevard project is approximately 23 km long and 9 tunnels will be opened in the scope of this project. The first tunnel to be opened is Akyazı tunnel. Left tube is located between Km: 0+764-3+180 (2416m long); right tube is located between Km: 0+764- 3+242 (2478 m long), and this tunnel is designed as twin tube having 3-lanes (Fig. 1). Project alignment enters the...
Abstract: Mount Ovit Tunnel Ovit Dağı Tüneli), is a highwayunder construction through Mount Ovit which is 2600 m in height and 12.6 km in length. Initially the project faced many problems caused by highly unstable portal batters, and fault zones with high water inflows and difficult rock conditions. Macro synthetic fiber reinforced shotcrete FRS lining was considered to use instead of steel mesh to...