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RAPID INSTALLATION OF SUPPORT IN A PARTIALLY RAISE BORED SHAFT USING SKY JACKS (2009)

Installation of support in known poor ground intersections during reaming operations requires rapid access to stabilize the shaft wall and thus to prevent the loss of the shaft through scaling. This is especially relevant to shafts of long dimension where the duration from time of exposure to time of support installation is lengthy. This paper deals with the innovative methodology employed at Harmony’s No. 8 Shaft 17/24 level sub ventilation shaft to rapidly support a shale intersection between 23 and 24 Level by employing a single deck stage suspended from the reamer head by means of Skyjack winches.
Reference:
he Southern African Institute of Mining and Metallurgy Shaft Sinking and Mining Contractors Conference 2009
Organization:
Murray & Roberts Cementation
South Africa
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