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Rockfall Protection - Grasberg Mine 2015

RXE-8000 rockfall barrier protecting mill facility in the background

Rockfall Protection - Grasberg Mine 2015

Installation works in progress - visible special combined posts allowing helicopter transport

Rockfall Protection - Grasberg Mine 2015

Slope morphology required reliable protection against 8000 kJ rockfalls and a height of 9 meters

Rockfall Protection - Grasberg Mine 2015

Finally, a 50 meters long rockfall protection was installed

Rockfall Protection - Grasberg Mine 2015

Overview of the Grasber Mine mill area

Rockfall Protection - Grasberg Mine 2015

Drilling works required good preparation and special equipment suspended on ropes

Rockfall Protection - Grasberg Mine 2015

Because of the size and helicopter transportation limits, posts were delivered in pieces, being screwed together directly on site

Rockfall Protection - Grasberg Mine 2015

RXE-8000 middle post pieces being transported by the helicopter - visible project specific screw flanges

Rockfall Protection - Grasberg Mine 2015

9 meters high RXE-8000 rockfall barrier installed across a natural gully

 

Systems

 

System length

50 m - 50 m

 

Year of installation

2015

Initial situation

Rockfall hazard from the natural slopes above the mill area within the Grasberg mine had to be mitigated. After several incidents with boulders hitting buildings and infrastructure a fast and reliable solution had to be found.

Description

The RXE-8000 rockfall barrier was installed across a very active gully on the east side of the mill area. Several rockfall incidents with boulders up to 2 meters in diameter had affected the mill infrastructure before. To ensure safe operation of the mill area below the gully, the barrier was installed approximately 140 meters above office buildings and ore processing facilities.

Country/Region

Indonesia

Customer

Freeport-McMoRan Inc.

Engineering

Geobrugg

Contractor

PT Freeport Indonesia

Other participating companies

RPT-Indonesia

Protected object

Mine / Quarry

Corrosion protection

Galvanized, 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