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Application of a TSL in declines at Mponeng Mine
AngloGoldAshanti
Riaan Carstens
Presentation Outline
Introduction Overview of Project What is a TSL? Application Equipment Strength Tests Cost Comparison Conclusions
Application of a TSL in declines at Mponeng Mine AngloGoldAshanti - - PowerPoint PPT Presentation
Application of a TSL in declines at Mponeng Mine AngloGoldAshanti - - PowerPoint PPT Presentation
Application of a TSL in declines at Mponeng Mine AngloGoldAshanti Riaan Carstens Presentation Outline Introduction Overview of Project What is a TSL? Application Equipment Strength Tests Cost Comparison Conclusions Global Operations
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U.S.A. Tanzania Brazil Argentina South Africa Namibia Australia Mali
Global Operations
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AngloGold Ashanti SA Operations
Ergo Ergo Western Ultra Deep Levels TauTona TauTona Savuka Savuka
Mponeng Mponeng
Tau Lekoa Tau Lekoa Great Noligwa Great Noligwa Kopanang Kopanang Moab Khotsong Moab Khotsong
WITWATERSRAND BASIN
Witwatersrand Basin
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Mponeng - History
Mponeng “Look at me”
Shaft commissioned in 1986 Sub-shaft commissioned in 1993 All mining is done on the VCR horizon down to 120 Level
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Mining Layout
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Project Area 4.5 KM 3.5 KM
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Ounces Profile
100 200 300 400 500 600 700 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 Years
BP 07 - Base BP 07 - Above 109 Level BP 07 - Below 109 to 120 Level BP 07 - Below 120 Level
Above 109 Level Below 109 level to 120 level VCR B120 Project
Ounces ‘000
- Reserves
2.7 Million Oz
- Gold
85 Tons
- Project Duration 66 Months
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Vertical section through Mponeng
Ventersdorp Contact reef
C L r e e f
SS1 SS2 SSV
Main Service/Vent
83 Level -2 253
120 Level -3 372 Shaft bottom -3 461
900m
123 Level
126 Level -3 572
VCR B120 project area
Decline bottom -3 604 m below collar
- 3 880 m below datum
109 Level -3 037
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Declines
Four declines 120 to 126/127 126 level 120 level infrastructure 123 level SS1 # SS2 # M p
- n
e n g s
- u
t h e r n l e a s e b
- u
n d a r y
- Decline 1: 997 m down
- Total m : 2200 m
- 3777.473m BS
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What is a TSL?
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Application Equipment
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Application Equipment
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Strength Tests - Tensile
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Strength Tests - Tensile
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Strength Tests - Bond
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Strength Tests - Bond
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Strength Tests – Bond Shear
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Strength Comparison
6.65 0.91 Tensile (MPa) 10.75 1.38 Bond Shear (MPa) 5.2 Bond Strength (MPa)
5mm TSL 50mm Gunnite Criteria
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Total Cost Comparison – (ZAR Million)
29.16 53.50 Total 4.21 11.23 Maintenance Cost 4.41 7.96 Labour Cost 18.57 22.01 Material Cost & Transport 1.97 12.31 Capital Cost
TSL 5mm Gunnite 50 mm Description
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Unit Cost Comparison – (ZAR/m2)
185.37 278.00 Total 30.30 75.76 Maintenance 29.75 53.72 Labour 1.26 9.08 Transport 0.00 20.77 Additives 124.07 118.68 Material
TSL 5mm Gunnite 50 mm Description
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Cash Flow – (ZAR Million)
Total cost outflow s for support sy stem s
0.00 5.00 10.00 15.00 20.00 25.00 2007 2008 2009 2010 2011 2012 Y ears ZAR Millions T
- tal Wetcrete C
- st
T
- tal T
SL C
- st
19.56 Difference
- 41.09
NPC10 Gunnite
- 21.53
NPC10 TSL
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Decline photo’s
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Sidewall Fracturing
2.5m
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TSL photo’s
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TSL photo’s
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TSL photo’s
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On-Reef Application
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On-Reef Application
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On-Reef Application
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Conclusions
No rock mass deterioration observed to date TSL system is ZAR 19.56 Mill, $ 2.45 Mill less than gunnite system based on a NPC10 Cannot compare support systems on direct cost only
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