Rohtang Pass is a very famous and popular mountain pass, almost 13,058 ft, situated on the eastern Pir Panjal Range of the Himalayas around 51 km from Manali. Especially known for its mesmerizing landscape, the pass connects the Kullu Valley with the Lahaul and Spiti Valleys of Himachal Pradesh, India. Known for its scenic beauty, Rohtang Pass holds strategic importance for India. Every year, during July to September, the road becomes a passage to the people of Lahul valley transporting their cash crop, potatoes and peas to the markets across the Rohtang Pass to Kullu and earning money for the unstable weather period of 9 months. Now that we have introduced the Rohtang Pass, let’s see Encardio-rite’s project overview, the instrument used, and, the services provided.
Project Overview:
Recognized as one of the highest trafficable passes in the world, the Rohtang pass is designed to create an all-weather route to Leh and Lahaul and Spiti valleys in Himachal Pradesh. The Rohtang Pass Highway Tunnel is situated in the Western Himalaya region of Northern India with its altitude of 3,980 m. For about four months, the pass is covered with white sheets of heavys snowfall and blizzards, making the route inaccessible for anyone. The Rohtang Pass Highway Tunnel with its 8.8km of length is the longest road tunnel in India situated in a high altitude. Apart from high altitude and uncooperative climate, the geological condition in the Himalaya was a big challenge faced by the Encardio Team. The rocks found within the tunnel area are mainly comprised of schist and migmatite with expected disturbed zones and in some individual areas, high squeezing rock was also found.
Rohtang Pass Tunnel Details:
Shape (cross-section) of the tunnel: Horseshoe
Finished width: 10.00 m (32.8 ft) at road level.
Construction technique: Drill & Blast with NATM
Overburden: Maximum 1,900 m, average more than 600 m
Emergency tunnel: A 2.25 m high and 3.6 m wide emergency tunnel is integrated into the tunnel cross-section beneath the main carriageway.
Monitoring Services for Rohtang Pass Tunnel
Encardio-rite was awarded the subcontract for the complete monitoring solutions for the tunnelling work. Let’s have a look at its monitoring solutions.
Being an expert and experienced in geotechnical monitoring, Encardio-rite provided world-class monitoring services during tunnelling. Apart from that, their team also made sure that they were one step ahead of any mishap by continuously conducting geophysical prediction by Tunnel.
Seismic Prediction System (TSP) before tunnelling which, recognizes any early signs of fault or fracture zones, or zones where the rock mass characteristic changed. A geological prognosis could be given that enabled the tunnel site management to determine necessary ... [Continue Reading]
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