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A tunnel washer, also called a continuous batch washer, is an industrial washing machine designed specifically to handle heavy loads of laundry. The screw is made of perforated metal, so items can progress through the washer in one direction, while water and washing chemicals move through in the opposite direction.
A tunnel boring machine (TBM), also known as a "mole" or a "worm", is a machine used to excavate tunnels. Tunnels are excavated through hard rock, wet or dry soil, or sand, each of which requires specialized technology. Tunnel boring machines are an alternative to drilling and blasting (D&B) methods and "hand mining".
Freighter Fairpartner carrying the disassembled tunnel boring machine into the Port of Seattle in April 2013. Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and was the world's largest earth pressure balance tunnel boring machine, [14] at a cutterhead diameter of 57.5 feet (17.5 m) across.
Beck tunnel boring machine; Bertha (tunnel boring machine) M. Martina (tunnel boring machine) T. Tuen Mun–Chek Lap Kok TBM
Herrenknecht AG is a German company that manufactures tunnel boring machines (TBMs). Headquartered in Allmannsweier, Schwanau , Baden-Württemberg, it is the worldwide market leader for heavy TBMs. Established by Martin Herrenknecht in 1975, the company soon grew.
Microtunneling or microtunnelling is a tunnel construction technique used to construct utility tunnels from approximately 0.5–4 m (1 ft 8 in – 13 ft 1 in) in diameter. Because of their small diameter, it is not possible to have an operator driving the tunneling machine, so they have to be remotely operated. [1] Micro tunnel boring
The Martina tunnel boring machine (officially named as the S-574. [1]) is a hard rock tunnel boring machine built by Herrenknecht AG.It is the largest hard rock tunnel boring machine in the world and has been used for drilling the Sparvo Tunnel, a part of the larger Variante di Valico project in Italy.
The front of the machine is equipped with a stationary drill tip which is kept at 700–930 °C (1,300–1,700 °F). The molten rock is pushed around the edges as the vehicle is forced forward, and cools to a glass-like lining of the tunnel. Massive amounts of energy are required to heat the drill head, supplied via nuclear power or electricity.