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Protection contre les chutes de pierres - Chenani Nashri Tunnel Portal (2016) 2016

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

Protection contre les chutes de pierres - Chenani Nashri Tunnel Portal (2016) 2016

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

Protection contre les chutes de pierres - Chenani Nashri Tunnel Portal (2016) 2016

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

Protection contre les chutes de pierres - Chenani Nashri Tunnel Portal (2016) 2016

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

 

Systèmes

 

Longueur du système

80 m - 91 m

 

Année d’installation

2016

Situation de départ

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)

Client

N.H.A.I. (National Highways Authority of India)

Ingénierie

GeoData Consultants for Leighton Wellspun Contractors Pvt. Ltd.

Entrepreneur

Leighton Welspun Contractors Pvt. Ltd.

Objet protégé

Route/Rue, Infrastructure

Protection anticorrosion

galvanisé, GEOBRUGG SUPERCOATING

Votre contact local

René Müller
   

René Müller

Country Manager Cantons AG BE BL BS FR GE JU NE SO VD VS

Risques naturels
Ingénierie Hydraulique
Exploitation minière / Tunnel
Geobrugg AG,Industriestrasse 21,5200 Brugg / Suisse Country Manager Cantons AG BE BL BS FR GE JU NE SO VD VS

E-mail

Olivia Sartorius
   

Olivia Sartorius

Risques naturels
Ingénierie Hydraulique
Exploitation minière / Tunnel
Geobrugg AG

E-mail

Alexander Bittendorfer
   

Alexander Bittendorfer

Project Manager Inspection Services

Risques naturels
Geobrugg AG,Trucks via road 14 or 13 only!, Aachstrasse 11,8590 Romanshorn / Suisse Project Manager Inspection Services

E-mail

Isacco Toffoletto
   

Isacco Toffoletto

Risques naturels
Ingénierie Hydraulique
Exploitation minière / Tunnel
Geobrugg AG Ticino,Via Brusada 5,6933 Muzzano / Suisse

E-mail