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USA
A BRUGG GROUP COMPANY
USA

Kaikoura Tunnel 16

Kaikoura SH1, 7343, Peketa Kaikoura, Neuseeland
2019
Kunde
NCTIR and NZTA
Ausführende Firma
Rock Control
Geschützte Objekte
Strasse
Energieaufnahmevermögen
1000 kJ
Systemhöhe
4.0 m
Systemlänge
116 m
Korrosionsschutz
GEOBRUGG SUPERCOATING®, GEOBRUGG ULTRACOATING®
Ausgangslage

The Kaikoura M7.8 earthquake caused widespread damage to the road and rail corridor for approximately 20 km North and South of the Kaikoura township. Over forty major slips inundated the road and rail with more than 750'000 m³ of material from source zones up to 500 meters above sea level.  The highly fractured Grey Wacke means frequent future rockfalls and debris loads. The high rockfall frequency with some debris loading created the requirement for a Geohazard Solution that could arrest the rockfall but be strong enough to withstand the pressure loading from debris accumulation. The barrier was located on the old road, and access behind the barrier had to be maintained.

Massnahme

A 116 meters long, 4 meters high GBE-1000A-R was the selected system. The fixed post system has no upslope anchor ropes enabling easy access behind for clearance and maintenance. The net was upgraded to a SPIDER® S4-130 to withstand the pressure loading and increase the durability for frequent rockfall impacts. TECCO® G65/3 was selected as the secondary mesh to avoid puncturing failures from smaller high-velocity impacts.

Due to the highly fractured rock mass from the cut and cover tunnel construction, self-drilling anchors were required. Geobrugg Type III flexheads transfer the load to the bar anchors. The alignment had two downslope anchors due to the curved alignment and two support rope separations to allow maintenance on individual sections. SUPERCOATING® and ULTRACOATING® were used due to the proximity to the sea.

Ansprechpartner

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Naturgefahren
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / USA
Telefon +1 860 377 3230

Kontaktformular

Saleh Feidi
Saleh Feidi
Regional Manager California
Naturgefahren
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / USA
Telefon +1 909 706 8964

Kontaktformular

John Kalejta
John Kalejta
Regional Manager Central US
Naturgefahren
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / USA
Telefon +1 505 220 1404

Kontaktformular

Bob Lyne
Bob Lyne
Regional Manager Southeast
Naturgefahren
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / USA
Telefon +1 336 337 0945

Kontaktformular

Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Naturgefahren
Geobrugg North America, LLC
22 Centro Algodones
NM 87001 Algodones / USA
Telefon +1 505 771 4080
Mobil +1 505 400 0796

Kontaktformular

Tim Shevlin
Tim Shevlin
Sales Director
Naturgefahren
Geobrugg North America, LLC
4676 Commercial St. SE, PMB 174
Salem OR 97302 / USA
Telefon +1 503 423 7258

Kontaktformular