India’s biggest Tunnel Boring Machine is building Mumbai Coastal Road project; details

Mumbai, Coastal Road projectThe nation’s biggest Tunnel Boring Machine (TBM)- Mavala has been at work for nearly a month, 20 metres below Priyadarshini Park at Nepean Sea Road. (picture: IE)

Under one of many biggest inexperienced leisure open areas in Mumbai, the shoreline on the southernmost tip of the monetary capital is altering on the pace of three metres per day. The nation’s biggest Tunnel Boring Machine (TBM)- Mavala has been at work for nearly a month, 20 metres below Priyadarshini Park at Nepean Sea Road, in keeping with an IE report. From there, the TBM is burrowing metre-by-metre below Malabar Hill, in direction of its principal problem, an undersea portion aligned to Marine Drive, as a part of the Mumbai Coastal Road mission, value Rs 12,721 crore. The mission, comprising a highway, a tunnel in addition to an interchange, goals to hyperlink South Mumbai to the tip of Worli, of the Worli-Bandra Sea Link by means of a high-speed hall.

India’s first undersea tunnel is truly a twin tunnels’ set, one for every visitors carriageway. The size of the tunnel is 2.07 kilometre from Priyadarshi Park to Chhoti Chowpatty at Marine Drive, close to Chowpatty seaside at Girgaum. Starting from January 11, when Maharashtra CM Uddhav Thackeray inaugurated Mavala, the TBM has drilled 30 metres of the tunnel deep below the town’s most costly actual property up to now. With a diameter of 12.19 metres, the TBM is mentioned to be the biggest machine of its variety in India. It is 80 metres lengthy and weighs 2,300 tonnes. Still, almost 50 metres of the TBM is within the launching shaft the place the employees of Larsen & Toubro, engineers and labourers are at work. According to officers on the web site, the TBM would have burrowed sufficient in one other fortnight to vanish into the tunnel which it is drilling.

According to the report, Priyadarshini Park was arrange on reclaimed land, and the park’s 80-100 metres falls within the intertidal sea space. The tunnel will meet the ocean on Malabar Hill’s different facet, at Walkeshwar. From there, the tunnel will hug Marine Drive for round half a km below the ocean, earlier than opening to a connecting highway overland, 4 kilometres to Nariman Point. At the tip of Priyadarshini Park, the tunnel will hyperlink to a highway to Haji Ali.

With this mission, the shoreline in South Mumbai is set to vary. The highway will lengthen the coast inside the ocean as much as 100 metres size. It has been deliberate by the BMC that 111 hectares might be reclaimed, which is 12 occasions the scale of Oval Maidan at Churchgate. The civic physique has accomplished about 80 hectares out of the 111-hectare land reclamation wanted for the mission.

According to officers on the web site, the TBM can each day drill as much as 10 metres, and it is at present boring the southbound visitors tunnel. To full drilling for one tunnel, it should take about 9 months. At Chhoti Chowpatty, the TBM might be eliminated and for boring the northbound visitors tunnel, will probably be transported again to Priyadarshini Park. It will take about two years to finish your complete means of tunneling, mentioned Vishal Thombare, Executive Engineer with the Coastal Road division.

The report additional mentioned that an enormous Slurry Treatment Plant has been arrange close to the launching shaft of the TBM. The Slurry Treatment Plant separates the soil, stones and water around the clock. At the development web site, diggers, dumpers and cranes are at work constantly, dealing with materials for reclamation in addition to building. Several staff, principally migrants from the states of Odisha and Andhra Pradesh, are working in two shifts. Work is prone to be over in July 2023. However, officers hope to finish the work sooner, given there aren’t any hurdles like land acquisition or shifting of individuals.

Ashwini Bhide, Additional Municipal Commissioner, was quoted within the report saying that they want seamless connectivity from the town’s southern tip to the northern facet. In phrases of time, there can be an virtually 70% discount with this highway. According to her, one will have the ability to attain from Princess Street flyover to Worli in simply 10 to 12 minutes with 35% saving on consumption of gasoline to cowl over 10 kilometres. She additional mentioned that the mission will add extra open areas in addition to steady promenade from Priyadarshini Park to Worli. Till now, 22% of bodily work has been completed, and many of the work was carried out within the final six-seven months after the court docket keep was vacated, she added.

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