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Protección contra caídas de rocas - Kaikōura SH1 - SR10 2022

Looking north - active TECCO 65/3 mesh and Canopy

Protección contra caídas de rocas - Kaikōura SH1 - SR10 2022

Multi system approach: left shallow landslide barrier SL150, centre self cleaning canopy SCC500 and right rockfall attenuator ATT60

Protección contra caídas de rocas - Kaikōura SH1 - SR10 2022

Southern canopy 75 % complete, mesh and posts getting hung in the North

Protección contra caídas de rocas - Kaikōura SH1 - SR10 2022

Looking down slope the canopy

 

Sistemas

 

Longitud del sistema

104 m

 

Año de instalación

2022

Situación inicial

The Kaikōura M7.8 Earthquake caused widespread damage to the road and rail corridor 20 km North and South of the Kaikoura town ship. Over 40 major slips inundated the road and rail with over 750,000 m³ of material form source zones up to 500 m above sea level.  The highly fractured Grey Wacke meant frequent future rockfalls were expected. The rockfall frequency and near vertical slope with no shoulder at SR10 created the requirement for a system that protected the road without encroaching onto it, was quick to install and requires minimal future maintenance. The slope on average is  80-90 degrees with the project being the final and most complex of the NCTIR rockfall protection systems.

Descripción

A 104 m long self cleaning canopy (SCC-500) was installed at SR10. The self cleaning canopy was selected due to it's self cleaning ability and being able to withstand multiple rockfall impacts up to 500 kJ prior to requiring maintenance. The system has 13 posts ranging from 10-15 m in length with an upslope net length of between 12-26 m. The posts were anchored at 6 m high above the road with a 15 degree post inclination. The primary nets utilised high tensile (1770 MPa) ROCCO ring mesh with a secondary TECCO G65/3 for aperture control.  The structure has a support rope separation at post 6 to enable a split construction and a more efficient installation.  Type III flex heads were installed to transfer the off axis load back to the Gewi 32 anchor bar and a gap fill kit was installed to ensure  100 % system coverage. An active TECCO G65/3 system was installed in several areas below the canopy to mitigate the lower rockfall hazards. The system was installed using a combination of helicopters, cranes, Hiab's, scissor lifts and human power.

Cliente

Subcontratista

Objeto protegido

Carretera

Protección contra la corrosión

GEOBRUGG SUPERCOATING, GEOBRUGG ULTRACOATING

Su contacto local

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Protección contra riesgos naturales
Ingeniería hidráulica
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / EE. UU. Regional Manager Northeast

Correo electrónico

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Protección contra riesgos naturales
Ingeniería hidráulica
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / EE. UU. Regional Manager California

Correo electrónico

John Kalejta
 

John Kalejta

Regional Manager Central US

Protección contra riesgos naturales
Ingeniería hidráulica
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / EE. UU. Regional Manager Central US

Correo electrónico

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Protección contra riesgos naturales
Ingeniería hidráulica
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / EE. UU. Regional Manager Southeast

Correo electrónico

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Protección contra riesgos naturales
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

Correo electrónico

Tim Shevlin
 

Tim Shevlin

Sales Director

Protección contra riesgos naturales
Geobrugg North America, LLC,Salem OR 97302 / EE. UU. Sales Director

Correo electrónico