How do you dig tunnels?

Answer 1

There are a number of ways to build a tunnel. The location of the structure and the material through which the tunnel will pass will dictate the approach used. Sometimes we just blast away rock, like in the side of a mountain. Other times will use a boring machine to cut through materials, and we'll install "pieces" behind the machine that become the sides and overhead of the tunnel. We might dig a big "trench" in the ground, put in supports and an overhead, and then cover the whole thing over. Other tunnels are built in sections, like "tubes" or something similar, and are then placed under water, linked together and sealed, and then pumped out to form the tunnel. There are yet other techniques, and you can begin to learn about them by using the link below.

Answer 2

The Queens-Midtown Tunnel was designed as a twin tube crossing, providing four lanes of through traffic. Excavation on this project proved difficult as crews turned up vast geological variations beneath the East River, creating a costly and exhausting tunneling process. Silt and rock hampered the drilling process often creating dangerous working conditions for the underground "sandhogs". Ground was officially broken on the Queens-Midtown Tunnel the afternoon of October 1, 1936, by then president Franklin D. Roosevelt. The tunnel's final hole-through took place on November 8, 1939, as workers from both the Manhattan and Queens' shoreline met beneath the East River.

Answer 3

Tunnel surveying is a very specialised field that may well be beyond the scope of this website.

Schofield and Breach devote over 50 pages of their text bookA to tunnel surveying and a further 10 pages to setting out in general including a significant number of diagrams and equations not replicable on this site.

If you are a student and / or have an Athens login, you can access an electronic copy of this text book from the Information for Education website (see related link).

A Schofield, W. and Breach, M. (2007) Engineering Surveying, 6th Edition, Butterworth-Heinemann, Oxford.

Answer 4

go to temple and pray to god, then god will be opened ur security code

Answer 5

The Eupalinian aqueduct under Mount Kastro in Samos, Greece, is one of the oldest tunnels in the world. It was built in 520BC by Eupalinos of Megara.

Answer 6

by making and a hole digging side ways