The construction on the 160 km Phase 3 of the Delhi Metro system began in 2011 and is currently underway, 53.835 km of the metro is being built underground.
The Phase 3 of the Delhi Metro involves the construction of two new lines on standard gauge and the extensions of existing lines built in Phase 1 and 2. The Phase 1 and 2 network are 190 km with 48.06 km underground.
The new lines are the 58.596 km Line 7 or Pink Line from Majlis Park to Shiv Vihar and the 38.235 km Line 8 or Magenta Line from Janakpuri West to Botanical Garden.
The extensions will be Line 1 or Red Line, from Dilshad Garden to Ghaziabad Bus Adda 9.410 km, Line 2 or Yellow Line from Jahangirpuri to Samaypur Badli 4.489 km, Line 3 or Blue Line from Dwarka to Najafgarh 4.295 km and from Noida City Centre to Sector 62 6.675 km, Line 5 or Green Line from Mundka to Bahadurgarh 11.182 km, Line 6 or Violet Line from Central Secretariat to Kashmere Gate 9.370 km and from Badarpur to Ballabgarh 17.075 km.
Phase 3 includes 40 sections, 38 sections will be built using a TBM, the section Kalkaji Mandir – Lotus Temple shaft on the Magenta line will be constructed by the NATM method and the section Nizamuddin Station – Ring Road shaft constructed by using the cut & cover method.
On the 19.05.2016 the joint venture of Pratibha and FEMC with a TBM S723 made the 2nd breakthrough for the CC-23 contract of Delhi Metro’s Phase 3 at Nehru Enclave station for the new 38.235 km Magenta line. This will connect Janakpuri West with Noida’s Botanical Garden by mid 2017. An EPBM TBM was commissioned on the 30.10.2015 for the Greater Kailash station and has completed the 1089 m long down-line tunnel with 778 rings. On the 22.02.2016 a TBM S937 made the 1st breakthrough for the up-line tunnel at Nehru Enclave station.
On 25.05.2016 the joint venture of Pratibha and FEMC with TBM S890 made the final breakthrough for the CC-23 contract of Delhi Metro’s Phase 3 at the Greater Kailash station on the new Magenta line. The EPBM TBM, started from the Chirag Delhi station on the 11.02.2016 and completed the 545m long down-line tunnel. This was the final breakthrough for project CC-23 which spans from Kalkaji to Hauz Khas. The first breakthrough by TBM S883 for the up-line tunnel, took place at the Greater Kailash station on the 12.04.2016. The TBM S883 will now be dismantled.
For the contractors Larsen & Toubro - SUCG, there are only 3 more TBM breakthroughs to complete the Magenta line. On at Aravali Mid-Shaft for Down-line, one at RK Puram Mid-Shaft for the Up-line and then one at Munirka station for Down-line, contract CC-27.
For further information click in/11 for tunnelbuilder archive. Also visit http://www.delhimetrorail.com/ and http://themetrorailguy.com/category/delhi/. 21/16.
Links used:-
http://www.delhimetrorail.com/Phase-III_documetnt/pdf/61PH-III_DMRC_-Model.pdf
http://tunnelbuilder.com/Archive/Projects.aspx?&projectcode=in%2f11
