The Gotthard Base Tunnel is the world’s longest railway tunnel, connecting Switzerland and Italy. This engineering marvel took 17 years to build and is a testament to human ingenuity. Learn more about this incredible structure and how it has revolutionized travel and trade in the Alps.
The Gotthard Base Tunnel is a truly unique structure. It is the longest railway tunnel in the world, and it is also one of the deepest. The tunnel passes through a variety of different rock formations, including granite, gneiss, and schist.
To build the tunnel, engineers had to develop a number of innovative techniques. One of the biggest challenges was dealing with the high water pressure in the tunnel. To solve this problem, engineers used a technique called “TBM spraying.” This involved using a tunnel boring machine to spray concrete onto the walls of the tunnel, creating a waterproof seal.
Another challenge was dealing with the heat generated by the tunnel boring machines. The machines produce a lot of heat, which can cause the surrounding rock to melt. To prevent this, engineers used a system of chilled water pipes to cool the rock.
The Gotthard Base Tunnel is a truly remarkable feat of engineering. It is also a reminder of the power of human will to overcome even the most daunting challenges.