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Protection contre les chutes de pierres - Tunnel des Pontis 2010

Rockfall canopy for 2000 kJ with self cleaning effect, protecting Tunnel des Pontis portal area

Protection contre les chutes de pierres - Tunnel des Pontis 2010

Overview of the situation before installation - visible slope with rockfalls up to 2000 kJ of dynamic energy, endangering cantonal road below

Protection contre les chutes de pierres - Tunnel des Pontis 2010

Designing this unique rockfall canopy, Geobrugg specialists used also simulation software FARO, allowing the structure not only to be 100 percent safe but also have certain self cleaning effect

Protection contre les chutes de pierres - Tunnel des Pontis 2010

Portal area before canopy installation

Protection contre les chutes de pierres - Tunnel des Pontis 2010

Rockfall canopy installation required temporary road closure and involved rope access works. Total installation time of two months is short compared to other solutions like concrete gallery

Protection contre les chutes de pierres - Tunnel des Pontis 2010

The working gallery shows the rockfall threat, not only from big boulders but also from huge amounts of smaller rocks

Protection contre les chutes de pierres - Tunnel des Pontis 2010

The installed canopy protects the road.

 

Systèmes

 

Longueur du système

- 61 m

 

Année d’installation

2010

Situation de départ

The entrance of the historic Tunnel des Pontis was endangered by rockfalls.

Description

The flexible rockfall canopy – at present the world’s strongest, with an energy absorption capacity of 2000 kJ – was installed at an approximately 60 m long rockface at the Tunnel des Pontis. The supporting structure calculations including special load cases such as boundary field hits, suspension rope hits and snow load were fully simulated on a computer using the FARO software. A total netting coverage of 1200 m² was installed. Lengthening the existing tunnel would have cost eight times more than Geobrugg’s solution.

Client

Association intercommunale d’Anniviers

Entrepreneur

Sébastien Chéseaux Paravalanches SA

Objet protégé

Route/Rue

Protection anticorrosion

galvanisé, GEOBRUGG SUPERCOATING

Ingénierie

Nivalp SA / Geobrugg AG

Votre contact local

Roger Moor
   

Roger Moor

Country Manager Ost- und Zentralschweiz, Liechtenstein

Risques naturels
Ingénierie Hydraulique
Exploitation minière / Tunnel
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Suisse Country Manager Ost- und Zentralschweiz, Liechtenstein

E-mail

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

Alexander Bittendorfer
   

Alexander Bittendorfer

Project Manager Inspection Services

Risques naturels
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Suisse Project Manager Inspection Services

E-mail

Isacco Toffoletto
   

Isacco Toffoletto

Ticino Country Manager

Risques naturels
Ingénierie Hydraulique
Exploitation minière / Tunnel
Geobrugg AG Ticino,Stabile Cometal, via Pizzante 7,6595 Riazzino / Suisse Ticino Country Manager

E-mail