Rishikesh-Karnaprayag with 16 main tunnels, 12 escape tunnels to be completed by…, it is India’s longest…

Rishikesh Karnaprayag Rail mission: A famous progress has been made in the Rishikesh Karnaprayag Rail mission in Uttarakhand, with 9 of 16 mainline tunnels and eight of 19 important bridges achieved. Spanning 125 km, the railway will strengthen connectivity to Char Dham. The longest tunnel (T8) shall be India’s longest at 14.59 km. 12 new stations are moreover underneath construction.

It is determined to become the country’s longest transport tunnel, surpassing unusual rail and avenue tunnels in Jammu and Kashmir and Himachal Pradesh. The leap forward marks a famous step forward in a mission geared toward making improvements to connectivity and lowering dash time in Uttarakhand’s hill districts.

The motorway will join pilgrimage websites, promote tourism, strengthen local companies, and lower dash time severely. Towns fancy Devprayag, Srinagar, Rudraprayag, Gauchar, and Karnaprayag shall be at once linked, touching 5 districts: Dehradun, Tehri Garhwal, Pauri Garhwal, Rudraprayag, and Chamoli.

Constructing this tunnel in the gorgeous Himalayan terrain is a famous engineering achievement. The Rishikesh-Karnaprayag mission ingredients 16 main tunnels (104 km), 12 bring collectively away tunnels (97.72 km), and 7.05 km of imperfect passages, totalling a intrepid 213.57 km of tunnels. Out of this, 195 km has already been constructed.

This mission moreover marks the main successful employ of a Tunnel Boring Machine (TBM) by Indian Railways in the Himalayan attach. The TBM bored 10.4 km, whereas the relaxation used to be achieved the utilization of the New Austrian Tunnelling Intention (NATM).

The tunnel excavation wasn’t easy. Engineers needed to take care of feeble rock formations, heavy overburden as a lot as 800 meters, and restricted geological recordsdata. In some sections, water inflows of as a lot as 2,000 litres per minute made the work even extra hectic.

Alongside with the tunnels, the railway line comprises 19 important bridges, 5 famous ones, and 38 minor bridges. Major structures over the Chandrabhaga and Alaknanda rivers are already achieved. Infrastructure fancy a avenue overbridge (ROB), avenue underbridge (RUB), and three important avenue bridges beget moreover been built to reinforce the mission.