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Chenani Nashri Tunnel Portal (2016)

Rockfall Protection - Chenani Nashri Tunnel Portal (2016) 2016

Finished line of GBE-500A rockfall barrier above the Chenani Nashri Tunnel

Rockfall Protection - Chenani Nashri Tunnel Portal (2016) 2016

Overview of the tunnel portal construction site - GBE-500A rockfall barrier line visible on the top

Rockfall Protection - Chenani Nashri Tunnel Portal (2016) 2016

GBE-500A after installation, slopes below are being cut

Rockfall Protection - Chenani Nashri Tunnel Portal (2016) 2016

GBE-500A after installation, slopes below are being cut

 

Systems

 

System length

80 m - 91 m

 

Year of installation

2016

Initial 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)

Country/Region

India

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

Corrosion protection

Galvanized, GEOBRUGG SUPERCOATING

Your local contact

René Müller
   

René Müller

Country Manager Western Switzerland

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Monitoring
Geobrugg AG,Industriestrasse 21,5200 Brugg / Switzerland Country Manager Western Switzerland

E-Mail

Olivia Sartorius
   

Olivia Sartorius

Project Manager Sales Eastern and Central Switzerland

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Monitoring
Geobrugg AG Project Manager Sales Eastern and Central Switzerland

E-Mail

Matthias Denk, Msc. Env. Eng.
 

Matthias Denk

Natural Hazards
Hydraulic Engineering
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Switzerland , Msc. Env. Eng.

E-Mail

Isacco Toffoletto
   

Isacco Toffoletto

Country Manager Southern Switzerland

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Monitoring
Geobrugg AG Ticino,Via Brusada 5,6933 Muzzano / Switzerland Country Manager Southern Switzerland

E-Mail