How Chennai Metro Tunnel is Build

Eleven Tunnel Boring Machines to Build Chennai Metro Tunnel

Nine huge Chinese-made tunnel boring machines will soon be in action in Chennai for the Metro Rail project. Two machines were already in action at Washermenpet and Shenoy Nagar where two underground stations are coming up as part of the project, according to a source in the know.

Eleven machines will be used to excavate the underground sections. Of this, eight machines are being supplied by the German company Herrenknecht, which has already transported two machines from its plant in China.