The Delhi Metro Museum today introduced a new attraction for the visitors – an 8 ft tall giant replica of the cutter head of a tunnel boring machine (TBM), which will give the visitors a real time experience of how these giant machines bore tunnels underground.
The new exhibit was unveiled at the Metro Museum in Patel Chowk by Delhi Metro’s Managing Director, Dr. Mangu Singh in the presence of DMRC’s other Directors and senior officials. This replica has been madeof mild steel and looks exactly like the original cutter head of a TBM. The cutter head replica revolves like the original cutter heads. A separate button has also been provided, through which commentary, both in English and Hindi, narrating the details of the machine can be heard by the visitors. Visitors can also read about the cutter head from a display board installed in front of the exhibit.
The Cutter Head of a TBM is a circular structure at the front of the machine which cuts through the soil surface to facilitate the construction of underground tunnels. Armed with ‘teeth’ it revolves clockwise and bores through the surface, while the other components of the TBM help in taking the muck out and facilitate further tunnel construction by putting up the pre-cast concrete segments of the tunnel in sequence.
The type of the Cutter Head depends on the nature of the soil surface. There are different Cutter Heads for soft soil, hard rock and other kinds of surface. This is undoubtedly one of the most important components of a Tunnel Boring Machine.
The Delhi Metro Museum is one of the few museums globally which are dedicated to Metro railway.A treasure trove of display panels, historical photographs and exhibits about the Metro, the museum traces the genesis of the Delhi Metro. Since its inception, the museum has been visited by many eminent dignitaries, researchers and students.
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