Mechanized Tunneling is a method of tunneling that uses tunnel boring machines to install tunnels in all types of soil conditions. This method is primarily used on drive lengths exceeding 300 FT in length for tunnels ranging in size from 72” to 144”, where work areas for support equipment is approximately 10000-15000 SF. Tunnel liners installed by this method are casing, tunnel liner plate, concrete pipe, and rib/lagging.
