What a way to end the year!
Yesterday afternoon, the THI-1 TBM deployed by the L&T-SUCG JV made a breakthrough at the Magenta line’s RK Puram mid-shaft! This TBM was launched from the Munirka station in September and traveled roughly 300 meters to reach the mid-shaft which has been constructed exclusively for the line’s up-line tunnel. This event marks the 8th breakthrough to be recorded on the CC-27 project which spans from Shankar Vihar to Hauz Khas.
Between Vasant Vihar & Munirka, the L&T-SUCG JV had deployed 3 TBMs to speed up the completion of the tunnels on this stretch and beat the May 11 2016 deadline set by the Delhi Metro Rail Corparation. While this TBM was deployed from Munirka, the other two were launched from Vasant Vihar and are expected to make breakthroughs in February and April 2016 – please see the table at the bottom of this post.
Satellite view of the mid-shaft where the breakthrough was made:
With this breakthrough out of the way, only 4 more breakthroughs are left on the CC-27 section between Shankar Vihar and Hauz Khas. Here’s a list of all the remaining tunnel sections and their estimated completion time-frame:
|Munirka||RKP Mid-Shaft||Up-line||Completed: Dec ’15|
|Vasant Vihar||RKP Mid-Shaft||Up-line||February 2016|
|Vasant Vihar||Munirka||Down-line||April 2016|
|Vasant Vihar||Shankar Vihar||Up-line||Completed: Jan ’15|
|Vasant Vihar||AIC Mid-Shaft||Down-line||January 2016|
|Shankar Vihar||AIC Mid-Shaft||Down-line||February 2016|
The ‘AIC Mid-Shaft’ above refers to the mid-shaft which has been constructed adjacent to the Air India Colony between Vasant Vihar and Shankar Vihar. Like the RK Puram mid-shaft, L&T-SUCG built this mid-shaft in order to deploy an additional TBM and speed up work.
For more updates on Delhi Metro’s Phase III, check out the Delhi section of The Metro Rail Guy!