Infrastructure major Hindustan Construction Company (HCC) has successfully achieved a major breakthrough by day-lighting the tunnel on the Dwarka-Najafgarh Metro corridor.
The 665-metre tunnel is part of the ambitious Phase-III of the Delhi Metro. The tunnel day-lighting event was witnessed by Dr Mangu Singh (MD), Jitendra Tyagi (DW) and Rajan Kataria (CPM).
The Tunnel Boring Machine (TBM) was launched at a shaft near Sai Baba Temple and emerged out at the shaft near Hanuman Temple of Najafgarh. The same TBM will once again be deployed at the Human Temple end to dig another tunnel parallel to the completed tunnel.
This is the third contract for underground Metro being executed by HCC since October 2012 under the Phase III of the Delhi Metro. HCC has already completed three contracts under Phase I and Phase II of the Delhi Metro.
The scope of work for Package CC-66, which is underway, includes construction of 224 metre open ramp, 219 metre covered ramp including a launching shaft, tunnel by EPBM method for 665 metre length, Cut & Cover 198 metre and station box of 288 metre. The contract also includes construction of one of the biggest underground stations, namely Najafgarh, which is 290 metres long and 30 metres in width.
Arun Karambelkar, President and Whole Time Director, HCC Ltd, said ´Overcoming all odds, the HCC project team sustained round-the-clock work to achieve this milestone. HCC has been undertaking challenging assignments in underground Metro development and the repeat order from DMRC reflects our ability to execute complex projects.´