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Protezione da caduta massi - Navachab Mine 2002

General overview of the rock face within the mine

Protezione da caduta massi - Navachab Mine 2002

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

Protezione da caduta massi - Navachab Mine 2002

Boulders retained by the net

Protezione da caduta massi - Navachab Mine 2002

Material held back by the rockfall barrier

 

Lunghezza del sistema

150 m

 

Anno di installazione

2002

Situazione iniziale

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.

Descrizione

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.

Cliente

Anglo Gold

Progettazione:

SRK Consulting Engineers

Contraente:

Nautical Steel/Navachab Mine

Oggetto protetto

Cava / Miniera, Altri

Il contatto locale

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / Stati Uniti Regional Manager Northeast

E-mail

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / Stati Uniti Regional Manager California

E-mail

John Kalejta
 

John Kalejta

Regional Manager Central US

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / Stati Uniti Regional Manager Central US

E-mail

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / Stati Uniti Regional Manager Southeast

E-mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Sistemi contro il dissesto idrogeologico
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

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Tim Shevlin
 

Tim Shevlin

Sales Director

Sistemi contro il dissesto idrogeologico
Geobrugg North America, LLC,Salem OR 97302 / Stati Uniti Sales Director

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