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Underground & Open Pit Mining - Grasberg Mine 2015

RXE-8000 rockfall barrier protecting mill facility in the background

Underground & Open Pit Mining - Grasberg Mine 2015

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

Underground & Open Pit Mining - Grasberg Mine 2015

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

Underground & Open Pit Mining - Grasberg Mine 2015

Finally, a 50 meters long rockfall protection was installed

Underground & Open Pit Mining - Grasberg Mine 2015

Overview of the Grasber Mine mill area

Underground & Open Pit Mining - Grasberg Mine 2015

Drilling works required good preparation and special equipment suspended on ropes

Underground & Open Pit Mining - Grasberg Mine 2015

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

Underground & Open Pit Mining - Grasberg Mine 2015

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

Underground & Open Pit Mining - Grasberg Mine 2015

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

 

Systems

 

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

René Müller
   

René Müller

Country Manager Western Switzerland

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Monitoring
Geobrugg AG,Industriestrasse 21,5200 Brugg / Switzerland Country Manager Western Switzerland

E-Mail

Olivia Sartorius
   

Olivia Sartorius

Project Manager Sales Eastern and Central Switzerland

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Monitoring
Geobrugg AG Project Manager Sales Eastern and Central Switzerland

E-Mail

Matthias Denk, Msc. Env. Eng.
 

Matthias Denk

Natural Hazards
Hydraulic Engineering
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Switzerland , Msc. Env. Eng.

E-Mail

Isacco Toffoletto
   

Isacco Toffoletto

Country Manager Southern Switzerland

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Monitoring
Geobrugg AG Ticino,Via Brusada 5,6933 Muzzano / Switzerland Country Manager Southern Switzerland

E-Mail