After commissioning Tunnel Boring Machine (TBM) Urja in July, engineers from Larsen & Toubro today completed site acceptance tests (SAT) on TBM Avni at Shivajinagar Station for building tunnels on the 21.386 km Line-4 (Reach 6 / Pink Line) of the 73.92 km Bangalore Metro Phase 2 project.
This Ø6.67m slurry machine (DZ669) was dispatched from TBM manufacturer China Railway Construction Heavy Industry Co., Ltd. (CRCHI)’s plant in Changsha after completing factory acceptance tests (FAT) in November 2019. The machine’s parts arrived in the city in February and workers began lowering them into the station’s southern-end in May.
Per the tunneling plan, this TBM along with TBM Lavi, lowered earlier in July, will be deployed exclusively for building the 2.755 km package RT-02’s 2141 meter twin tunnels between Shivaji Nagar – MG Road – National Military School (formerly Vellara Road).
A commissioning date for the machine’s launch towards MG Road Station (see images from July) has not yet been revealed – I’ll add it here whenever it is.
For more updates, check out the Bangalore section of The Metro Rail Guy!