DELHI ( Metro Rail News): This week, Herrenknecht, a manufacturer of tunnel boring machines, finished the factory acceptance tests (FAT) for TBMs S-710 and S-1134. These are to be used for the 65.1 km Delhi Metro Phase 4 project construction.
Afcons Infrastructure is now set to utilize both refurbished Earth Pressure Balance (EPB) machines, each with a diameter of Ø6.63m, alongside two additional machines, in order to construct twin tunnels for Package DC-05 of the 28.92 km Janakpuri West – RK Ashram extension of the Magenta Line.
In January, 2022, DMRC had provided 2481.50 crore contract for package DC-05 to Afcons with the deadline of 42 months.
Package DC-05 is an underground section that spans 7.46 km and will connect a ramp north of Derawal Nagar to RK Ashram. The section includes six stations located at Derawal Nagar, Ghanta Ghar, Pulbangash (which provides an interchange with the Red Line), Sadar Bazar, Nabi Karim, and Ramakrishna Ashram Marg (which provides an interchange with the Blue Line).
Afcons previously utilized TBM S-710 in Chennai between 2015 and 2017, where it was deployed for Phase 1’s Package UAA-01 between Egmore and May Day Park – Washermenpet. Later, the machine was brought to Ahmedabad between 2018 and 2020, where it was used for Phase 1’s Package-1 between East Ramp, Kankaria East, and Kalupur.
