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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".
The Tuen Mun - Chek Lap Kok TBM otherwise known as Qin Liangyu or more formally, the Mixshield S-880 was the world's largest tunnel boring machine launched in June 2015 by Herrenknecht in Germany. [1] [2] The TBM was used to drill a 5 km tunnel connecting Tuen Mun to the Hong Kong International Airport, part of the Tuen Mun–Chek Lap Kok Link ...
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.
The two Herrenknecht tunnel boring machines (TBMs) used to construct the tunnel were named Mary Ann, after Mary Ann Evans (with the pen name, George Eliot) and Elizabeth, after Elizabeth Cadbury. [ 7 ] [ 8 ] Most of the second TBM to be delivered, Elizabeth , was repurposed from TBM Dorothy used to construct the Long Itchington Wood tunnel ...
Proposed route. Black arrows show direction of boring machine movement, not flow of sewage. The Thames Tideway Tunnel is a deep-level sewer along the tidal section of the River Thames in London, running 25 kilometres (16 miles) from Acton in the west to Abbey Mills in the east, where it joins the Lee Tunnel which connects to Beckton Sewage Treatment Works.
The tunnel is being bored in two sections; the western section will be 5 miles (8.0 km) long and the eastern section will be 3.4 miles (5.5 km) [9] Of these, 13.7 km (8.5 miles) has been designed as a twin bored tunnel, which will be excavated using a total of four earth pressure balance TBMs. Following the completion of boring, all four TBMs ...
Near the valet entrance to the Westgate’s casino, a Boring employee was using a SANY machine, ... Elon Musk wanted the Boring Co. to build a tunnel system below Las Vegas. Former employees say ...
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.