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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: Application of tunnel design to site conditions requires continuous monitoring of deformation, review and revision of design considerations. A twin tube road tunnel has been constructed through the heterogeneous weak rock conditions involving sedimentary and volcanic units. Close distance between the tubes due to highway alignment constraints, lowering the water table due to excavation...