tunnel

Prime Minister Narendra Modi on Sunday (2 April 2017) inaugurated Chenani – Nashri Tunnel, Country’s Longest road tunnel that links Kashmir Valley with Jammu by on all – Weather route.

 

Place

 

  • Is located at an altitude of 1,200 meters (nearly 4,000 feet) in difficult Himalayan terrain.
  • Bores through the belly of the lower Himalayas between Chenani in Udhampur district and Naashri in Ramban district.
  • Is a road tunnel in the state of Jammu and Kashmir on NH-44 (former name NH1A before renumbering of all national highways).

 

National Highways 44

  • NH-44 is the longest-running major north-south National Highways in India.
  • It starts from Srinagar and terminates in KanyaKumari.
  • The highway passes through the states of Jammu & Kashmir, Punjab, Haryana, Delhi, UP, MP, Maharashtra, Telangana, AP, Karnataka and Tamil Nadu.
  • NH-44 was laid and is maintained by central Public works Department (CPWD).
  • It is the longest national highway in India.
  • Chenani – Nashri Tunnel which was inaugurated by Prime Minister of India, Narendra Modi on 2 April 2017, is a significant addition to this highway.
  • It has come into being by merging seven previously differently numbered national highways in full or part starting from.
  • Former NH-1A from Srinagar in Jammu & Kashmir.
  • Former NH-1 in Punjab and Haryana ending at Delhi.
  • Part of former NH-2 starting from Delhi and ending at Agra.
  • Former NH-3 (popularly known as Agra Bombay highway) from Agra to Gwalior.
  • Former NH-75 and former NH-26 to Jhansi and finally
  • Former NH-7 via Nagpur and Adilabad, Nizamabad, Hyderabad and Bangalore, Dharmapuri, Salem, Tiruneluli and Madurai terminating at Kanaykumari.

 

Details:

  • The work was started in 2011 and has been inaugurated on 2 April 2017.
  • Length : 9.28 Km (5.8 mi)
  • Passes through: the lower Himalayan mountain range on Jammu – Srinagar National Highway 44.

 

Other Name – Patnitop Tunnel

 

Owner – National Highways Authority of India (NHAI)

 

  • It is the first tunnel in the country with a fully integrated tunnel control system.
  • Built at Rs. 3,720 Crore.
  • The tunnel will reduce the distance between Jammu and Srinagar from 41 Km to 9.2 Km
  • 1,500 engineers, geologists, skilled workers and labourers worked on the project.
  • 6,000 LED multiple colour lights will be used to break monotony.
  • GSM phone will work inside the tunnel. 118 SOS boxes have been set up, on every 150 meters on both sides.
  • BSNL, Airtel and Idea have set up facilities inside the tunnel to carry signals.
  • 118 CCTVs, one every 75 metres.
  • At 50 Km/hr. speed the tunnel is a 12 to 15 minutes drive.
  • Comprises two tubes and 29 cross – passages, with special lane for exigencies
  • Vehicle distance to be maintained at three metres.

 

Technologies:

  • Incorporates India’s first fully integrated mechanism to externally control everything
  • from the movement of vehicles.
  • to the inflow the outflow of air, and
  • even the evacuation of passengers or vehicles in distress.

 

  • 92.7 FM is mandatory for vehicles where emergency will be relayed.
  • Video surveillance System.
  • FM Rebroadcast System.
  • Entrance Detection control System.
  • Active firefighting System.
  • Smoke and heat dampeners will react quickly in fire incidents.

 

  • The heat detection system will record rises in temperature in the tunnel – result perhaps, of excessive emissions from on or more vehicles, in such, the ITCR will get in touch with staff inside the tunnel, and the offending vehicle will be pulled over into a lay-by and subsequently removed by a crane through the parallel escape tunnel.
  • Air quality monitors every 12 meters will keep a check on carbon dioxide and carbon monoxide, guiding exhaut fans and air purification.
  • Automated integrated Traffic control system
  • Will monitor traffic round-the-clock and
  • Overheated vehicle will be made to stop for cooling off.
  • It also features a state-of-the-art ABB ventilation system to ensure the users have access to fresh air as they drive through it.
  • ChenaniNashri tunnel is the country’s first – and the world’s sixth-road tunnel with a transverse ventilation system.
  • Fresh air coming into the main tube will push vehicle exhaust upwards and into the other tube; exhaust forms in the parallel escape tunnel to will such stale air from the main tube and throw it outside.
  • To prevent diminution of vision as a result of change in the light while going in or coming out of the tunnel the lighting inside have been adjusted a gradient of luminous strength.
  • Despite having excavated in a difficult Himalayan region, both tubes are 100% waterproof.
  • There will be no seepage of water from the ceilings or any of the walls of the tunnels.

 

Importance

  • The tunnel reduces the distance between Jammu and Srinagar by 30.11 Km (18.7 mil and cut travel time by two hours.)
  • The all-weather tunnel bypasses snowfall and avalanche prone areas in winter at places like patnitop, kud and Batote that obstruct NH-44 every winter and cause long queues of vehicles – sometimes for days at length.
  • The tunnel, bypassing snow-bound upper reaches, will reduce the journey time by two hours and provide a safe, all-weather route to commuters travelling from Jammu and Udhampur to Ramban, Banihal and Srinagar.
  • 27 lakh fuel savings a day
  • Serve as an alternative to the highways which is closed at the time of snow and rains.
  • It will help to boost the trade and commerce and tourism in the valley.
  • It will reduce traffic jams on National Highway 1A.