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Rockfall Protection - Bulli Pass (1) 2017

A 1,1 km long Shallow Landslide Barrier protects the road at Bulli Pass in New South Wales.

Rockfall Protection - Bulli Pass (1) 2017

Placing concrete for post footings ©NSW Government

Rockfall Protection - Bulli Pass (1) 2017

Overview of work site ©NSW Government

Rockfall Protection - Bulli Pass (1) 2017

Site preparation ©NSW Government

Rockfall Protection - Bulli Pass (1) 2017

Installation of barrier mesh fencing ©NSW Government

Rockfall Protection - Bulli Pass (1) 2017

Work near satefy ramp ©NSW Government

Rockfall Protection - Bulli Pass (1) 2017

Installed posts and footings ©NSW Government

Rockfall Protection - Bulli Pass (1) 2017

Cranes lifting rock fall protection barrier components into position above Bulli Pass ©NSW Government

Rockfall Protection - Bulli Pass (1) 2017

Precast concrete pad footings for the rockfall protection barrier posts ©NSW Government

Rockfall Protection - Bulli Pass (1) 2017

Rear side of the barrier with brakes

 

System length

1100 m

 

Year of installation

2017

Initial situation

The Wollongong Escarpment Area in Wollongong New South Wales is unstable and Bulli Pass is subject to rockslides especially in times of heavy rainfall. Bulli Pass has a history of slip and rock fall events. A major slip in 2008 required slope stabilisation works with the road being closed for seven weeks. Following several events, including a serious rock fall that landed on a vehicle in 2015, there have been extensive investigations into the upslope section of Bulli Pass.  After detailed analysis Geobrugg Australia was chosen as the preferred supplier of a Rock Fall and Landslide mitigation system.

Description

The project reduces the residual slope risk profile from landslide and rock fall events. The project consisted of a 1.1 km of SL-150 Shallow Landslide Barrier and a combination of VX and UX Shallow Landslide Barriers.  The system now provides rock fall and landslide protection from a road that has 12000 car movements a day.  The barrier is 3,5 m high including over 1000 rock nail anchors constructed in difficult terrain. The Barrier is also capable of containing a 500 kg rock travelling at 160 km/hour.

More information:

- Roads & Maritime, New South Wales

Customer

Roads and Maritime Authority, New South Wales

Contractor

Specialised Geo Pty Ltd (GHD Contractor)

Protected object

Road

Corrosion protection

GEOBRUGG ULTRACOATING

Engineering

Department of Public Works, (Project Management)

Other participating companies

Consultant Andrew Hunter Coffey/GHD (Geotechnical Consultant); Consultant Philip Flentje (University of Wollongong)

Other installed applications

Debris Flow & Shallow Landslide Protection

Your local contact

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / United States Regional Manager Northeast

E-Mail

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / United States Regional Manager California

E-Mail

John Kalejta
 

John Kalejta

Regional Manager Central US

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / United States Regional Manager Central US

E-Mail

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / United States Regional Manager Southeast

E-Mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

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

E-Mail

Tim Shevlin
 

Tim Shevlin

Sales Director

Natural Hazards
Geobrugg North America, LLC,Salem OR 97302 / United States Sales Director

E-Mail