Estados Unidos
Estados Unidos

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Proteção contra desprendimentos - Kaikōura SH1 - SR8 and 9 2021

ATT looking north side protecting the road

Proteção contra desprendimentos - Kaikōura SH1 - SR8 and 9 2021

ATT 60 drops stones to the ground in a controlled manner

Proteção contra desprendimentos - Kaikōura SH1 - SR8 and 9 2021

Top view from the barrier

Proteção contra desprendimentos - Kaikōura SH1 - SR8 and 9 2021

ATT 60 looking south onto the sea

 

Sistemas

 

Comprimento do sistema

110 m

 

Ano de instalação

2021

Situação inicial

The Kaikōura M7.8 Earthquake caused widespread damage to the road and rail corridor 20 km North and South of the Kaikoura township. Over 40 major slips inundated the road and rail with over 750,000 m³ of material from source zones up to 500 metres above sea level. The highly fractured Grey Wacke meant frequent future rockfalls were expected. The rockfall frequency and wide run-out area at SR8 and 9 created the requirement for a system that attenuated the rockfall energy to a manageable level, was quick to install and required minimal future maintenance. The slope, on average, is approximately 50 degrees, but in some parts, it is nearly vertical.

Descrição

A 110 metres wide rockfall attenuator (ATT - 60) with a 35 to 40 metres tail which enables the attenuated material to pass down through to the lower section for clearing if required. The 65 mm aperture is small enough that no secondary mesh is required, and the ULTRACOATING ensures design life in the coastal environment. The attenuator system utilises a 3 metres high hinged post with a 16 metres spacing and a support rope separation halfway.  A double-top rope was installed for increased safety in design, and Type III flex heads were installed to transfer the load to the Gewi 32 anchor bar. Overall, the attenuators create a quick and cost-effective solution.

País / Região

New Zealand

Promotor

Contratante

Objecto protegido

Estrada

Proteção contra a corrosão

GEOBRUGG ULTRACOATING

O seu contacto local

Kevin Coyle
 

Kevin Coyle

Regional Manager Northeast

Riscos naturais
Engenharia Hidráulica
Geobrugg North America, LLC,3 Beaudet Terr,CT 06237 Columbia / Estados Unidos Regional Manager Northeast

E-mail

Saleh Feidi
 

Saleh Feidi

Riscos naturais
Engenharia Hidráulica
Geobrugg North America, LLC,8921 Emperor Ave.,91775 San Gabriel, California / Estados Unidos

E-mail

John Kalejta
 

John Kalejta

Riscos naturais
Engenharia Hidráulica
Geobrugg North America, LLC,KS 67226 Wichita / Estados Unidos

E-mail

Bob Lyne
 

Bob Lyne

Riscos naturais
Engenharia Hidráulica
Geobrugg North America, LLC,8004 Windspray Drive,NC 27358 Summerfield / Estados Unidos

E-mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

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

E-mail

Tim Shevlin
 

Tim Shevlin

Riscos naturais
Geobrugg North America, LLC,OR 97302 Salem / Estados Unidos

E-mail