MUMBAI (Metro Rail News): The Mumbai Metro Rail Corporation Limited (MMRCL) completing 45% of tunnelling works and 9 out of 32 tunnel breakthroughs till March-end. The work on city’s fully underground Metro line 3 (Colaba-Bandra-SEEPZ), is speeding through its underbelly with a breakthrough is when a tunnel boring machine (TBM) manages to bore through the designated route, from one end to the other.
The 33.5 km long Mumbai Metro line 3 built at a cost of ₹23,136 crore and expected to ease traveling woes for Mumbaiites by connecting the island city to the western suburbs.
Phase one of the corridor from Aarey to Bandra-Kurla Complex (BKC) is likely to be operational by 2021. The second phase is from BKC to Cuffe Parade.
According to the report, 23.69km of the 52-km tunnelling work for the Metro line 3 corridor has been completed as of March-end. The MMRCL has deployed 17 tunnel boring machines in the city for the job, which have so far excavated 31 lakh metric tonnes of earth.
The weekly brief metro & rail professionals read.
The tunnelling work for Mumbai Metro line 3 corridor has been divided into seven packages to complete the sections simultaneously and work has started on all of them. As per the report, package 5 between Dharavi and Agripada 4,744m of the 7,992m tunnelling has been completed so far, while in package 4 Worli to Dharavi station 6,267m of 10,960m has been finished.
In March 2019, the TBM Godavari-1 covered a distance of 2.
9kms at the domestic airport Metro station. The breakthrough was achieved in 455 days. we have earlier reported that the Mumbai Metro line 3 will be the second corridor in the country to have tunnels under a riverbed, with two tunnels of 1.18km long to be built 12.5m below the Mithi riverbed.