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Ochrona przed obrywami skalnymi - Kaikoura State Highway 1 (SR1-2) 2019

Looking north - 3 m high GBE-500A rockfall barrier

Ochrona przed obrywami skalnymi - Kaikoura State Highway 1 (SR1-2) 2019

Looking upslope - 50 meters long and 3 meters high GBE-500A rockfall barrier

Ochrona przed obrywami skalnymi - Kaikoura State Highway 1 (SR1-2) 2019

Looking upslope -support rope separation

Ochrona przed obrywami skalnymi - Kaikoura State Highway 1 (SR1-2) 2019

Looking north - 3 m high GBE-500A rockfall barrier . Note: downslope anchor for upslope change in direction

Ochrona przed obrywami skalnymi - Kaikoura State Highway 1 (SR1-2) 2019

Looking south - 3 m high GBE-500A rockfall barrier

Ochrona przed obrywami skalnymi - Kaikoura State Highway 1 (SR1-2) 2019

Looking North - 3 m high GBE-500A rockfall barrier installed above shotcrete and precast walls. SH1 and the Coastal Pacific rail is an important lifeline and transport route going North from Christchurch.

 

Zastosowane systemy

 

Dlugosc systemu od

100 m

 

Rok Instalacji / Montazu

2019

Sytuacja początkowa

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 created the requirement for a geohazard solution at Site 1-2.

Opis zastosowanego rozwiazania

The original design and installation was a 50 meters long 3 meters high GBE-500A barrier. After installation, the decision was made to install an additional 50 meters of barrier to protect the highway further. The system was easily extended by upgrading the northernmost post to a support rope separation with no material wastage.


The GBA-500A is a hinged post system. The barrier has upslope anchors, which reduce the post foundation forces and therefore minimise impact to the precast concrete wall and shotcrete retaining walls below. The rockfall barrier used a 10 meters post spacing, had two downslope anchors due to a curved alinement and as previously mentioned was split into two sections with a support rope separation. Due to the highly fractured rock mass, self-drilling anchors were required. Geobrugg type II flex heads transfer the loads to the bar anchors. The mesh was ultra-coated due to its proximity to the sea.

Inwestor

NCTIR and NZTA

Wykonawca

Rock Control

Chroniony Objekt

Road

Ochrona przeciwerozyjna

GEOBRUGG ULTRACOATING

Osoba kontaktowa na miejscu

Roger Moor
   

Roger Moor

Country Manager Ost- und Zentralschweiz, Liechtenstein

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Kopalnie / Wydobycie / Tunel
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Szwajcaria Country Manager Ost- und Zentralschweiz, Liechtenstein

Formularz kontaktowy

René Müller
   

René Müller

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

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Kopalnie / Wydobycie / Tunel
Geobrugg AG,Industriestrasse 21,5200 Brugg / Szwajcaria Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

Formularz kontaktowy

Alexander Bittendorfer
   

Alexander Bittendorfer

Project Manager Inspection Services

Zagrożeniami naturalnymi
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Szwajcaria Project Manager Inspection Services

Formularz kontaktowy

Isacco Toffoletto
   

Isacco Toffoletto

Ticino Country Manager

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Kopalnie / Wydobycie / Tunel
Geobrugg AG Ticino,Stabile Cometal, via Pizzante 7,6595 Riazzino / Szwajcaria Ticino Country Manager

Formularz kontaktowy