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Protection contre les chutes de pierres - Navachab Mine 2002

General overview of the rock face within the mine

Protection contre les chutes de pierres - Navachab Mine 2002

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

Protection contre les chutes de pierres - Navachab Mine 2002

Boulders retained by the net

Protection contre les chutes de pierres - Navachab Mine 2002

Material held back by the rockfall barrier

 

Longueur du système

150 m

 

Année d’installation

2002

Situation de départ

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.

Description

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.

Client

Anglo Gold

Ingénierie

SRK Consulting Engineers

Entrepreneur

Nautical Steel/Navachab Mine

Objet protégé

Carrière / Mines, Autres

Votre contact local

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Risques naturels
Ingénierie Hydraulique
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / Etats-Unis Regional Manager Northeast

E-mail

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Risques naturels
Ingénierie Hydraulique
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / Etats-Unis Regional Manager California

E-mail

John Kalejta
 

John Kalejta

Regional Manager Central US

Risques naturels
Ingénierie Hydraulique
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / Etats-Unis Regional Manager Central US

E-mail

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Risques naturels
Ingénierie Hydraulique
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / Etats-Unis Regional Manager Southeast

E-mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Risques naturels
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

E-mail

Tim Shevlin
 

Tim Shevlin

Sales Director

Risques naturels
Geobrugg North America, LLC,Salem OR 97302 / Etats-Unis Sales Director

E-mail