TATA Projects’ Mumbai Metro Line 3 (underground Metro) has achieved a ground-breakthrough at Dadar. The twin tunnel boring machines, Krishna 1 & 2, lowered in from Nayanagar, Dharavi, started operations in October-November 2017 reached Dadar Metro station on January 31, 2019.
According to sources, Krishna 1 & 2 made their way drilling daily through the rocky strata made of Basalt grade 3 & 2, breccia grade 4, 3 & 2 and tuff grade 4 & 3. They charted their course from Nayanagar launching shaft. The 108 meters long Krishna 1 & 2 Tunnel Boring Machines bored, on an average, 10 to 12 meters daily shaping the tunnel with a total of 1779 RCC cement rings each. These TBMs are equipped with Earth Pressure Balance Technology.
Speaking on the occasion Ashwini Bhide, MD MMRC, said, “This is the third important tunnelling milestone in Mumbai Metro Line 3 and the credit goes to our engineers, supervisors, workers and other stakeholders. We intend to and are steadfastly working towards realising Mumbaikar’s dream of faster, comfortable and efficient commute at the earliest.”
Rahul Shah, chief operating officer – Urban Infra, TATA Projects Limited said, “We are happy to complete the work in the stipulated time and with utmost concern and care for Mumbaikars along the route alignment. This was a very smooth operation with least hindrance to traffic as possible, with the cooperation and support of MMRC officials and the traffic authorities.”
Overall 18 KM of tunnelling work has been completed till now for Mumbai Metro announced MMRCA.