United States
United States

myGeobrugg

South African Open Pit Mine

Rockfall Protection - South African Open Pit Mine 2018

The first ATT-20 attenuator system in Africa, rockfall interception area

Rockfall Protection - South African Open Pit Mine 2018

The posts of this attenuator rockfall barrier are 3 meters high, the mesh goes down to the ground (50 meters)

Rockfall Protection - South African Open Pit Mine 2018

Falling rocks will be directed behind the «fence» to the designated runout zone

Rockfall Protection - South African Open Pit Mine 2018

Rolled out chain link mesh covering the rockface, system width is 20 meters

 

Systems

 

System length

20 m

 

Year of installation

2018

Initial situation

The open-pit mine is located in the Republic of South Africa. The life of mine (LOM) is planned to the end of 2021. Two ore bodies will be mined at a combined rate of 5.9 Mtpa, using sub-level cave mining techniques. The resulting ground subsidence will affect operations at the surface.

Therefore, the customer required the installation of ground support and rockfall protection systems to improve the safety of people, of machines and equipment.

Description

Based on attenuator 1:1 testing in 2017, a system was designed based on calculated impulse. The impulse decided on the chosen type of attenuator. The rotational component defined the mesh type.

Rockfall attenuators are an exciting new protection system, especially for open-pit mines. They are a protection solution combining rockfall drapes and flexible rockfall barriers. The system is a passive protection measure: The barrier intercepts the falling rocks, the drape guides them into the designated runout zone.

  • Post height: 3 meters
  • System width: 20 meters
  • Mesh length: 50 meters

Customer

Undisclosed Mine

Engineering

Geobrugg

Contractor

Marshall Development

Protected object

Road, Mine / Quarry

Corrosion protection

GEOBRUGG SUPERCOATING

Your local contact

Kevin Coyle
 

Kevin Coyle

Regional Manager Northeast

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

E-Mail

Saleh Feidi
 

Saleh Feidi

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

E-Mail

John Kalejta
 

John Kalejta

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,KS 67226 Wichita / United States

E-Mail

Bob Lyne
 

Bob Lyne

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

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

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

E-Mail