PM Narendra Modi's visit to Arunachal Pradesh on March 9 marked a significant occasion as he inaugurated the strategically crucial Sela Tunnel. Alongside this monumental project, the Prime Minister laid the foundation stone for approximately 20 other development initiatives in the Northeast region, underscoring the Government's commitment to enhancing infrastructure in the far eastern corner of India.
The visit's centrepiece was the Sela Tunnel, an ambitious road tunnel constructed at an elevation of 3,000 metres in Arunachal Pradesh. It will provide year-round connectivity to Tawang in Arunachal Pradesh, making it the world's longest bi-lane tunnel at 12.04 km. This tunnel is a crucial development ensuring all-weather access to the challenging terrain of Tawang, near the Tibet border, and represents a noteworthy achievement in the region's infrastructure.
The Sela Tunnel will strengthen strategic capabilities along the Line of Actual Control (LAC). Its location near Sela Pass, a crucial point in the region, will play a pivotal role in facilitating troop deployment and the movement of machinery, bolstering India's military presence in the area.
Constructed by the Border Roads Organisation under Project Vartak, the tunnel project holds immense strategic importance in combating external threats. It will significantly reduce travel time and ensure all-weather access along the NH13 road to Tawang, a region known for its picturesque landscapes and cultural heritage.
As a key milestone in India's infrastructure development, the Sela Tunnel will enhance military capabilities and boost tourism in Tawang, offering visitors a smoother and more reliable travel experience. The tunnel's construction using the latest tunnelling methods will ensure uninterrupted travel, contributing to the growth of tourism in the region and positioning Tawang as a popular destination in the North East.
Engage with us in a conversation about the completion of the Sela Tunnel and its profound impact on the local community, tourism, and bolstering internal security.
BrahmDevYadav 1 year 5 months ago
What are the three main types of tunnels?
There are three basic types of tunnel construction in common use. Cut and cover tunnels are constructed in a shallow trench and then covered over. Bored tunnels are constructed in situ, without removing the ground above. Finally, a tube can be sunk into a body of water, which is called an immersed tunnel.
BrahmDevYadav 1 year 5 months ago
What is the difference between a high tunnel and a low tunnel?
Low tunnels are similar to high tunnels but much smaller only about 3 feet high and 4 feet wide. They are a lot simpler and less expensive to erect.
BrahmDevYadav 1 year 5 months ago
Why is it hot in tunnels?
Heat transfer happens in various ways in rail tunnels. For instance, when trains brake or accelerate, they produce heat that warms the surrounding air. That hot air mixes with other air in the tunnel and with heat radiating from the ground.
BrahmDevYadav 1 year 5 months ago
Why are tunnels bad for the environment?
Tunnel construction may also affect the ecological conditions of groundwater due to its disturbances in the underground area. During the bridge/tunnel operation period, environmental impacts and risks were mainly induced by rainfall events and water pollution accidents.
BrahmDevYadav 1 year 5 months ago
Do tunnels need ventilation?
The need for tunnel ventilation is critical for the life and safety of any person utilizing the metro, rail or road tunnels throughout the world. Typically the equipment is used for smoke extraction or control for the time it takes people to evacuate the tunnel under emergency conditions.
BrahmDevYadav 1 year 5 months ago
What are the failure modes of tunnels?
The failure mode may be described with one of the following five terms:-
(1) Detaching and Buckling,
(2) Sliding,
(3) Bending and Spalling,
(4) Slabbing and Spalling,
(5) Falling.
The failure modes at the crown, the sidewalls and the invert of the tunnel in Scenarios 2 and 3 are similar.
BrahmDevYadav 1 year 5 months ago
What are the risks of working in tunnels?
1. Tunnel stability including rock or earth falls and rock bursts.
2. Changing ground conditions including strata and stress fluctuations.
3. Limited space and access including confined spaces.
4. Air contamination or oxygen depletion.
5. fire or explosion.
BrahmDevYadav 1 year 5 months ago
Why are tunnels safe?
If we build a tunnel in soil, we have to replace the support, we removed with some other way to transfer the load of the soil above. This is why many tunnels are lined with materials like steel or concrete, to provide support to the tunnel walls and transfer the stresses in the subsurface around the tunnel.
BrahmDevYadav 1 year 5 months ago
How are tunnels safe?
Civil engineers work hard to build safe, strong tunnels. They know that tunnels have to stand up to forces of tension, torsion, compression and shearing. Tunnels also need to carry the weight of people and vehicles traveling through them. That is why tunnels are built with strong materials.
BrahmDevYadav 1 year 5 months ago
What are the benefits of growing in a high tunnel?
1.Extend the growing season.
2.Improve plant quality and soil quality.
3.Reduce nutrient and pesticide transportation.
4.Improve air quality through reduced transportation inputs.