The cut-and-cover tunnelling method
In the cut-and-cover method, a digger or a milling machine cuts slots in the ground that are then filled with concrete. These will later form the side walls of the…
Construction methods
There are different methods for building an underground tunnel. These depend on how deep the line is, the soil it passes through and whether there are any buildings on the…
How to build an underground system?
Vienna is a densely populated city that has grown overtime, and it is suitable on geologically complicated land. Various soil formations overlap each other. The Danube and its tributaries are…