Afcons Infrastructure this weekend started lowering parts of TBM 367 at Nabi Karim Station of Delhi Metro Magenta Line’s 28.92 km Janakpuri West – RK Ashram extension.
This refurbished 6.5m diameter Earth Pressure Balance (EPB) machine by Robbins is the first of four machines to be deployed by Afcons for building twin tunnels on the 65.1 km Delhi Metro Phase 4 project‘s 7.46 km underground Package DC-05.
The machine had passed factory acceptance tests (FAT) at Robbins’ yard in Gurgaon in December 2022. From Nabi Karim Station, the TBM will first travel towards Sadar Bazar and onward to Pul Bangash Station of the Red Line built in Delhi Metro’s Phase 1.
Delhi Metro Rail Corporation (DMRC) had awarded DC-05’s Rs. 2481.50 crore contract in January 2022 with a 42 month deadline.
7.46 km underground Package DC-05 will connect a ramp north of Derawal Nagar with RK Ashram via 6 stations at Derawal Nagar, Ghanta Ghar, Pulbangash (interchange with Red Line), Sadar Bazar, Nabi Karim & Ramakrishna Ashram Marg (interchange with Blue Line).
The rest of 372’s shields and cutterhead will be lowered in the coming days and assembled for commissioning, which I expect should happen in late June.
When that happens, it’ll become the 2nd TBM for Delhi Metro Magenta Line in Phase 4 to start tunneling after HCC-VCCL JV’s TBM S86 (Triveni) which completed tunneling on Package DC-06 (Vikaspuri – Krishna Park) in November 2022.
In the future, TBM 367 will be joined by refurbished Robbins TBMs S-710, S-1134 and a new machine 373 for building Package DC-05’s twin tunnels.
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