INDIA’S 1ST UNDERSEA TUNNELS

India’s first undersea twin tunnels in south Mumbai are close to completion.
The tunnels start near Girgaon, extend north under the Arabian Sea, Girgaon Chowpatty and Malabar Hill, and end at Breach Candy’s Priyadarshini Park.
It is 2.07-km long which are are a part of the Mumbai Coastal Road Project (MCRP) being built by the Brihanmumbai Municipal Corporation (BMC).
The 10.58-km MCRP links Marine Drive to the Bandra-Worli Sea Link and is just one part of the Coastal Road project.
The tunnels run 17-20 m below sea level.
A nearly 1-km stretch lies under the sea.
Resembling the shape of the Queen’s Necklace (the famous C-shaped Marine Drive promenade) the tunnel entry and exit points will have fiberglass facades.
Another highlight of the project is the use of the largest ever tunnel boring machine (TBM) in the history of India.
Named Mavala, the TBM weighs more than 1,700 tonnes and is nearly 12 m tall.
It is manufactured by a Chinese company.

SOURCE: THE HINDU, THE ECONOMIC TIMES, PIB

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