Within the scope of
Completion of Civil Works and Supply, Installation and Commissioning Works of
Electro-Mechanical Systems of Seyrantepe Depot Area-Warehouse Connection Lines
at 4. Levent Ayazağa Section of İstanbul Metro III. Phase; between shaft 6
km:22+405.338 (Line 1) and Hacıosman tail tunnels km:24+522.75 (Line 1), tunnel
excavation-support works, final reinforced concrete lining, shaft
manufacturing; (2,803.8 m A type tunnel, 709.42 m B1 type tunnel, 123.42 m B3
type tunnel, 847.3 m P type tunnel, 161.07 m special type tunnel, 359.46 m C
type tunnel, 178. 38 m T type tunnel, 104.2 m construction shaft) of ITU
Ayazağa Station pedestrian connection tunnel, Atatürk Oto Sanayi Station
pedestrian connection tunnel, Seyrantepe pedestrian connection tunnels and excavation-supporting
works of Darüşşafaka Station, Hacıosman Station and sub-station building of Atatürk
Oto Sanayi Station were carried out. The
construction technique which has been used is excavation-supporting with Bored
Tunnel – New Austrian Tunneling Method (NATM) and Construction of station with
cut-cover tunnel method.
