Guigala Tunnel in Tibet drilled through
Source：CCCCTime：2023-07-03
The drill-through of the Guigala Tunnel lays a solid foundation for the completion of the S5 expressway.
Recently, the Guigala Tunnel in Tibet, constructed by the Second Highway Engineering under CCCC, has been successfully drilled through after 7 years of construction, making it the longest high-altitude highway tunnel in the world.
The Guigala Tunnel is located at an altitude of over 4,000 meters and is a critical project of the S5 expressway connecting Lhasa and Shannan. The length of the left line is 12.79 kilometers, and the right line is 12.78 kilometers long.
The drill-through of the Guigala Tunnel lays a solid foundation for the completion of the S5 expressway. After the project is completed, the travel time from Lhasa to Shannan will be reduced to 1 hour, greatly facilitating local people's travel and promoting tourism and agricultural as well as pastoral industries along the route.
Facing with extremely complex geological conditions, the project team adopted advanced equipment such as three-arm rock drilling jumbos, wet concrete spraying machines, electric excavators, and information technology such as BIM management system to significantly reduce the number of workers and labor intensity, greatly improving construction efficiency, safety, and quality.
During the tunnel construction, the team actively took actions to fulfill social responsibilities, providing strong support for local development and poverty alleviation. The project hospital was opened to local villagers, providing medical assistance to those with limited access to healthcare. Access roads and bridges were also built in the village to facilitate travel of residents.
Editor: Second Highway Engineering
