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Kaikoura State Highway (SR27) / Coastal Pacific Rail (NS15)

Protection contre les glissements de terrain et les laves torrentielles - Kaikoura State Highway (SR27)   Coastal Pacific Rail (NS15) 2019

NS15: Looking North SH1 - 126 m SL-150 with transmission rope protecting the road and rail corridor

Protection contre les glissements de terrain et les laves torrentielles - Kaikoura State Highway (SR27)   Coastal Pacific Rail (NS15) 2019

NS15: Looking South SH1 - 126 m SL-150 with transmission rope protecting the road and rail corridor

Protection contre les glissements de terrain et les laves torrentielles - Kaikoura State Highway (SR27)   Coastal Pacific Rail (NS15) 2019

SR27: Looking North SH1 - SL-150 with transmission rope protecting the road and rail corridor

Protection contre les glissements de terrain et les laves torrentielles - Kaikoura State Highway (SR27)   Coastal Pacific Rail (NS15) 2019

SR27: Looking South SH1 - SL-150 with transmission rope protecting the road and rail corridor

Protection contre les glissements de terrain et les laves torrentielles - Kaikoura State Highway (SR27)   Coastal Pacific Rail (NS15) 2019

Note the Barrier is built on top of a culvert to contain the debris material in the event of overtopping

Protection contre les glissements de terrain et les laves torrentielles - Kaikoura State Highway (SR27)   Coastal Pacific Rail (NS15) 2019

Slip 8, looking West and North SH1 - SL-150 protecting the road rail corridor

 

Systèmes

 

Longueur du système

24 m - 126 m

 

Année d’installation

2019

Situation de départ

The Kaikoura M7.8 Earthquake caused widespread damage to the road and rail corridor 20 km North and South of the Kaikoura township. Initially, more than 40 major slips inundated the road and rail with >750,000 m³ of material from source zones up to 500 metres above sea level. The loosened highly fractured Grey Wacke has caused subsequent frequent rockfalls, shallow landslides and debris loads.

The increased hazard associated with the frequent failures created a requirement to install shallow landslide barriers on several open slope locations to be able to maintain the SH1 road and Railway below. The major design constraint for the sites was minimising the deflection of the barrier in both rockfall and debris load events.

Description

The 3.5m high SL-150 barrier was selected due to its 150kN/m² load capacity with low defection (<2.2 metres in a debris load event) and due to it being the only tested and certified landslide barrier. To lower the deflection further for the maximum energy level (MEL) rockfall event, a custom transmission rope was designed and installed. The lower deflection was required due to the barriers close proximity to the railway.

To date, six SL-150s ranging from 24 metres to 126 metres long have been installed in the Kaikoura region with three of them having an additional transmission rope.

Client

NCTIR / NZTA / KiwiRail

Entrepreneur

Geovert, SRG, HGS, Ground Anchor Systems and Geotech

Objet protégé

Route/Rue, Chemin de fer

Protection anticorrosion

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Votre contact local

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

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Ingénierie Hydraulique
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / Etats-Unis Regional Manager Northeast

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Saleh Feidi
 

Saleh Feidi

Regional Manager California

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Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / Etats-Unis Regional Manager California

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John Kalejta
 

John Kalejta

Regional Manager Central US

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Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / Etats-Unis Regional Manager Central US

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Bob Lyne
 

Bob Lyne

Regional Manager Southeast

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Ingénierie Hydraulique
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / Etats-Unis Regional Manager Southeast

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Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

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Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

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Tim Shevlin
 

Tim Shevlin

Sales Director

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Geobrugg North America, LLC,Salem OR 97302 / Etats-Unis Sales Director

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