On 22/04/2021 the Mumbai Metro Rail Corporation (MMRC) achieved its 37th breakthrough at Chhatrapati Shivaji Maharaj Terminus (CSMT) Metro Station o the metro line 3 in Mumbai. The Robbins made TBM Surya-2 completed its final drive of 569 m from Hutatma Chowk to CSMT Metro Station in 106 days using 418 concrete rings. With this 2.9-km long downline tunnel from Cuffe Parade to CSMT Metro Station is completed. With it, the total tunnelling progress of Package 01 has reached 96%.  

Package-1, which includes Cuffe Parade, Vidhan Bhavan, Churchgate and Hutatma Chowk 

Metro stations, has witnessed six breakthroughs (Cuffe Parade to Vidhan Bhavan (Upline– 

1228m and Downline–1254m), (Vidhan Bhavan to Churchgate (Upline–498m and Downline– 

481m), (Churchgate to Hutatma Chowk (Upline–654m) and Hutatma Chowk to CSMT 

(Downline– 569m). 

The overall tunnelling completed on the project is 52-km which is approximately 95% of the total project. 

For further information please click here and in/77 for the tunnelbuilder archive, also visit 'https://www.mmrcl.com/en and  https://www.robbinstbm.com/.  16/21.