USA
USA

myGeobrugg

Steinschlagschutz - Navachab Mine 2002

General overview of the rock face within the mine

Steinschlagschutz - Navachab Mine 2002

The muck pile after the failure.; material from the oxidized soft lower schist

Steinschlagschutz - Navachab Mine 2002

Boulders retained by the net

Steinschlagschutz - Navachab Mine 2002

Material held back by the rockfall barrier

 

Systemlänge

150 m

 

Installationsjahr

2002

Ausgangslage

In 2003 a 100 m³ fall of ground (FOG) occurred at Navachab Gold Mine, originated in the oxidized schist from an older failure scar. The FOG material was held back on the 1050 m catch bench. The elastic catch fence that was installed on the catch bench prevented overspill of the material into the pit. The risk to life though was very low as the pit bottom was closed to mining operations at the time.

Massnahme

The failure, though small, was monitored by the early warning system. It was fortuitous that the failure occurred near one of the early warning systems extensometers and progression of the failure was recorded using this extensometer. The last geotechnical report to management stated that collapse of this material was imminent. The FOG activated the early warning system, and the pit was successfully evacuated, and all personnel congratulated on their prompt reaction to the early warning system. No injuries or equipment damage occurred during this FOG.

Kunde

Anglo Gold

Planer

SRK Consulting Engineers

Ausführende Firma

Nautical Steel/Navachab Mine

Geschützte Objekte

Steinbruch / Bergbau, Sonstige

Ansprechpartner

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Naturgefahren
Uferschutz/Wasserbau
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / USA Regional Manager Northeast

E-Mail

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Naturgefahren
Uferschutz/Wasserbau
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / USA Regional Manager California

E-Mail

John Kalejta
 

John Kalejta

Regional Manager Central US

Naturgefahren
Uferschutz/Wasserbau
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / USA Regional Manager Central US

E-Mail

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Naturgefahren
Uferschutz/Wasserbau
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / USA Regional Manager Southeast

E-Mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Naturgefahren
Geobrugg North America, LLC,22 Centro Algodones,NM 87001 Algodones / USA , Civil Engineer General Manager Geobrugg North America

E-Mail

Tim Shevlin
 

Tim Shevlin

Sales Director

Naturgefahren
Geobrugg North America, LLC,Salem OR 97302 / USA Sales Director

E-Mail