Later this month, they plan to open a new metro station ‘Vystavochny Tsentr’ in Kiev. Let’s go find out how they’ve managed to build it at a record speed, in less than a year!
In the concourse.
So, a 120-meter long rotary machine works in the tunnel. Parallel to it, a more up-to-date ‘Herrenknecht’ and ‘Wirth’ tunnel-boring machines build two more tunnels.
In the photo: the ‘Herrenknecht’ tunnel-boring machine.
These baffles prevent ground from collapsing. On the left, you can see hoisting jacks set against the last ring installed, pushing the shield as the tunnel is being driven.
This is a rear view of the hand machine.
The tunnel consists of rings and each of the rings consists of 7 elements. Round rings are preferable for tunnel construction, while ‘square’ ones are used in above ground metro construction.