Chenani Nashri Tunnel Portal (2016) 2016 - Geobrugg Chenani Nashri Tunnel Portal (2016) 2016 - Geobrugg
Chenani Nashri Tunnel Portal (2016) 2016 - Geobrugg Chenani Nashri Tunnel Portal (2016) 2016 - Geobrugg
Chenani Nashri Tunnel Portal (2016) 2016 - Geobrugg Chenani Nashri Tunnel Portal (2016) 2016 - Geobrugg
Chenani Nashri Tunnel Portal (2016) 2016 - Geobrugg Chenani Nashri Tunnel Portal (2016) 2016 - Geobrugg

Chenani Nashri Tunnel Portal (2016)

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Place
Jammu & Kashmir
Country/Region
India
Year of installation
2016
Customer
N.H.A.I. (National Highways Authority of India)
Engineering
GeoData Consultants for Leighton Wellspun Contractors Pvt. Ltd.
Contractor
Leighton Welspun Contractors Pvt. Ltd.
Protected object
Road, Infrastructure
Systems
GBE-500A
Energy absorption capacity
500 kJ
System height
4.0 m
System length
80 m - 91 m
Corrosion protection
Galvanized, GEOBRUGG SUPERCOATING®
Other installed applications
Slope Protection
Situation

The site was initially proposed to be treated with shotcrete but persistent seepage of water which caused slope failures and cracks on the portals led the concessionaire to go for an alternate solution which does not only stabilize the slopes but also offers a green solution and allows the hydrostatic pressure to disperse. National Highways Authority of India decided to actively stabilize the tunnel portals. A protective measure had to be selected to stabilize the exposed cutting against superficial instabilities, tilting as well as sliding of individual blocks and rockfalls.

As an extra safety measure, 500 kJ barrier line was introduced and placed on one of the berms to provide extra safety besides portal stabilization. Rockfall barriers protect agains rockfalls from above stabilized area.

Description

The GBE-500A rockfall barrier system protects the entry and exit levels of the Chenani Nashri Tunnel from all sorts of major and minor rockfalls or any falling object which could in anyway harm the tunnel portals and traffic. Thus it helps reducing the risks involved as well as the complete protection from rockfall based calamity.

See also our slope project Chenani Nashri Tunnel Portal (1)

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