Giant mole landed underground

The first of two giant tunnel boring machines called TBMs, which will accelerate the excavation works in the Narlıdere Metro, constructed by İzmir Metropolitan Municipality, has been lowered underground. After the assembly process, 100 meters long and 450 tons of heavy excavators will surpass the world's largest passenger aircraft, Airbus 380.

İzmir Metropolitan Municipality will accelerate the construction works in Narlıdere Metro, which is prepared to bring a new breath to the traffic by facilitating urban transportation, thanks to 2 Tunnel Boring Machines (TBM). By using TBMs, the line will be constructed with the usage of deep tunnel technique. The traffic infrastructure and social life problems that will occur during the conduct of works will be minimized. Modern tunneling machines will also allow for a safer tunnel construction.

Two Giants weighing 450 tons

İzmir Metropolitan Municipality will work with double TBMs in double tunnels during the construction of Narlıdere subway. The pieces of TBM, which started to be lowered down by the expert team to the tunnel entrances, will be re-established here and made ready for excavation works.

The cutting head unit of the first TBM with a length of 100 meters and a width of 6.6 meters was mounted to the tunnel entrance of Balçova station. After the Ramadan Feast, the test works will begin for the TBMs, and an average of 20 meters per day will be excavated.

The increasing importance of TBM in the world due to their advanced tunneling activities is also called as ‘Underground Tunnel Factory’ due to their functions. The people, public in general, call these as ‘giant moles’ which work together for tunnel excavation and supporting works. With their outstanding power, the TBMs can easily adapt to the hard rock ground conditions with its versatile cutting head.

It's all going underground

This new subway of Izmir, which starts in the district of Balçova and ends in Narlidere, will pass the entire distance of 7.5 kilometers underground. There will be 7 stations in Narlıdere Metro. Within the scope of the project, there will be 1 switching station, 6 underground stations, 4 scissor tunnels, 9 manufacturing shafts and 2 storage lines.

Mayor Soyer's first visit to a construction site

Narlıdere Metro site is the first site visited by Izmir Metropolitan Municipality Mayor Tunç Soyer since his commission to the mayorship office. Mayor Soyer had received detailed information about the project and works.

Larger than the biggest passenger plane

Izmir's TBMs are among the world's largest construction machines with a length of 100 meters and even surpass the Airbus 380, a 72-meter long passenger plane.



Source: İ - "Giant mole" landed underground