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Steinschlagschutz - Kelowna 2017

Rolled out TECCO® mesh dangling from a spreader bar. This is the rockfall receiving area of the attenuator.

Steinschlagschutz - Kelowna 2017

Installation works along the road

Steinschlagschutz - Kelowna 2017

Installation, workers operated from a man-lift situated on the road

Steinschlagschutz - Kelowna 2017

Today, the attenuator is protecting the highway

Steinschlagschutz - Kelowna 2017

Completed system with 3 meters high posts

 

Systemlänge

15 m - 20 m

 

Installationsjahr

2017

Ausgangslage

British Columbia Ministry of Transportation and Infrastructure (BCMoTi) is improving the West Side Road in stages since 2014. For a certain section along the road an attenuator was favored instead of draped mesh.

Rockfall impact attenuators intercept the trajectory, reduce potential bounce height, and dampen the rockfall velocity, therefore, attenuate the total kinetic energy of rockfall.

A controlled guiding of the rock(s) to a designated collecting area limits costly clean-outs in difficult terrain. This type of easy to install, low maintenance, passive rockfall mitigation system is increasing in popularity worldwide.

Massnahme

Geobrugg North America, LLC offered a proprietary attenuator system that fulfilled the BCMoTi's requirements. Ecora Engineering and Resource Group Ltd. was retained to be the Engineer of Record (EoR) specifically for the attenuator installation. Ecora confirmed the system location, dimensioned the system anchors, assured quality control of the installation and also submitted the record drawings. Geobrugg supplied a qualified, experienced representative to advise the contractor on installation procedures. Little Rock Drilling and Blasting Ltd. were contracted to perform the installation work.

The attenuator was installed on a rock-cut approximately 20 m above the West Side Road.  Above the attenuator system, 30 m to 60 m of natural rock bluff represent a significant source of rockfall. By installing the attenuator close to the road, several advantages are highlighted: a large amount of mesh is saved when not draping the whole slope but allowing for some rockfall to be intercepted by the attenuator and then guided to the ground; furthermore, the attenuator could be located within the BCMoTi right-of-way, eliminating the need to access and construct on private land; finally maintenance is kept at a minimum thanks to the road's proximity.

It is easy to install with one single mesh type. No need to mix or layer meshes which takes time, waists material and increases exposure to workers. The mesh is simply attached to support rope with a Helix Coil or seaming rope.

Kunde

British Columbia Ministry of Transportation and Infrastructure

Geschützte Objekte

Strasse, Infrastruktur

Korrosionsschutz

GEOBRUGG SUPERCOATING

Planer

Ecora Engineering and Resource Group Ltd.

Subunternehmer

Western Geohazard Solutions Inc.

Ansprechpartner

Roger Moor
   

Roger Moor

Country Manager Ost- und Zentralschweiz, Liechtenstein

Naturgefahren
Uferschutz/Wasserbau
Minen / Bergbau / Tunnel
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Schweiz Country Manager Ost- und Zentralschweiz, Liechtenstein

E-Mail

René Müller
   

René Müller

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

Naturgefahren
Uferschutz/Wasserbau
Minen / Bergbau / Tunnel
Geobrugg AG,Industriestrasse 21,5200 Brugg / Schweiz Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

E-Mail

Alexander Bittendorfer
   

Alexander Bittendorfer

Project Manager Inspection Services

Naturgefahren
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Schweiz Project Manager Inspection Services

E-Mail

Isacco Toffoletto
   

Isacco Toffoletto

Ticino Country Manager

Naturgefahren
Uferschutz/Wasserbau
Minen / Bergbau / Tunnel
Geobrugg AG,Stabile Cometal, via Pizzante 7,6595 Riazzino / Schweiz Ticino Country Manager

E-Mail