Construction of the Delhi Metro is set to claim the record for the most tunnel boring machines (TBMs) in use in one city at one time with the announcement from the scheme’s developer that 34 machines will be used on Phase III of the project.
Delhi Metro has said that 11 TBMs will be used to build the 19km Mukundpur-Yamuna Vihar-Shiv Vihar corridor, a further 16 TBMs will build the 24.3km Janakpuri-Kalindi Kunj corridor and the final seven TBMs will construct the 9.4km Central Secretariat-Kashmere Gate corridor.
A Delhi Metro official said that a centralised data management system will be used on the project. The centralised data management system will act as a tool for data acquisition, visualisation and reporting, according to statement from the Delhi Metro. The statement said that the system will minimise risk by providing immediate information on progress of the tunnels and correctness of the tunnel alignment, ground settlement and status of buildings and structures along the underground alignment.
“Tunnels in Phase III are going to pass under railway tracks and under high rise building, flyovers and ring roads,” officials added. “The centralised data management system will consist of a map showing the entire TBMs position. It will also be useful to monitor tunnelling and its influence on existing buildings real time monitoring and comparison within expected and limiting values.”
Phase III of the metro is expected to be completed in 2016.