A 865-metre tunnel between Chhatarpur and Chhatarpur Mandir stations on Delhi Metro’s under-construction Tughlakabad-Aerocity corridor was completed Wednesday. Delhi Lieutenant Governor Vinai Kumar Saxena and Delhi Transport Minister Kailash Gahlot were present at the site of the breakthrough of the 97-metre-long tunnel boring (TBM) machine, used for tunnelling work. According to the Delhi Metro Rail Corporation, two parallel circular tunnels for up and down movement are being constructed on the stretch as part of the corridor. The work on the other parallel tunnel in this section will be completed by September, it stated. This new tunnel has been constructed at an average depth of around 15 metres. The TBM had to cross below the existing Yellow Line viaduct without disrupting metro train operations on the Line, it said.
