pike river coal mine acarp presentations august 2008 peter whittall – general manager, mines pike...
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![Page 1: Pike River Coal Mine ACARP Presentations August 2008 Peter Whittall – General Manager, Mines PIKE RIVER COAL](https://reader036.vdocuments.mx/reader036/viewer/2022062304/56649da25503460f94a8f466/html5/thumbnails/1.jpg)
Pike River Coal Mine
ACARP Presentations August 2008
Peter Whittall – General Manager, MinesPIKE RIVER COAL
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PIKE RIVER COAL Project Overview
• High value hard coking coal (HCC) – used for steelmaking
• NZ $240m project – fully funded
• 70% of coal sold for first 3 years – 55% for life of mine
• 1 million tonnes for 18 + years
• HCC prices strong at US $300 per tonne
• Roadway development by roadheader and CM; Extraction by Hydraulic
Monitoring
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PIKE RIVER COAL
Pike River Mine
Location Map
PIKE RIVER COAL
Greymouth
Greymouth
Wellington
Lyttelton
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PIKE RIVER COAL
Cross Section of the Coal Seams
Paparoa Seam
Brunner Seam
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PIKE RIVER COAL Tunnel Under Construction
Tunnel currently at Hawera Fault at 2,164m
Total Tunnel length 2,300m to coal seam
Portal September 2006 Tunnel Face Construction
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PIKE RIVER COAL
Mine Plan• Seam thickness: 3 to 13m but typically 4
– 9m;
• Roadway development by Continuous Miner and Roadheader
• Coal extraction by Hydro Monitor system (9000 litres/minute)
• All coal haulage by water: In mine by open flume; pit bottom to CPP by 10.5km 11” pipeline (4000 litres/minute per machine)
• In-seam drilling to define geological structure and limits
• Seam-, strata- and fault-originating mine water
• Gas average 4m3/t across lease; up to 10m3/t at depth; no outburst
Mining Parameters
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PIKE RIVER COAL Pit Bottom in Stone
•LHS: Fluming water; electrical
•RHS: Coal slurry bins; crushers; slurry pumps
•481m of stone excavation
•Max width: 8m
•Max Height: 11m
•Concrete: 600m3 of 50MPa; 170m3 of 10MPa
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PIKE RIVER COAL Pit Bottom in Stone
•LHS: Fluming water; electrical
•RHS: Coal slurry bins; crushers; slurry pumps
•481m of stone excavation
•Max width: 8m
•Max Height: 11m
•Concrete: 600m3 of 50MPa; 170m3 of 10MPa
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PIKE RIVER COAL
Seam Cross Section
Immediate Roof: Shales and coal rider seam
Upper Roof: Massive sandstone +100MPa
Floor: Interbedded shales and mudstones
Seam coring for Sulphur analysis
Seam dips 5o – 30o
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PIKE RIVER COAL Pit Bottom in Coal
4m dia. X 108m shaft
Main Fans
Pike River Tunnel
Water storage roads
Raw Coal Ponds
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PIKE RIVER COAL
Hydro Productivity(Excluding continuous miner and roadheader production)
•9,000 litres water/min
•3.6 t/min coal cutting rate
•40% Fluming density
•61.5% efficiency
•Shift productivity = 1,062t
•Daily productivity = 3,186t
•Annual productivity = 1.1Mt
Roadway and Extraction Productivity
0
1
2
3
4
5
6
7
8
9
10
0 5 10 15 20
Roadway Grade (degrees)
Dev
elo
pm
ent
Rat
e (m
/sh
ift)
CM
RH
Continuous Miner v Roadheader Productivity
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PIKE RIVER COAL
Roadheader (Waratah)
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PIKE RIVER COAL
Roadheader (Waratah)
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PIKE RIVER COAL
Roadheader (Waratah)
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PIKE RIVER COAL
Roadheader (Waratah)
•Base Machine: Wirth T1.14
•Cutting Dimension: 6.6m wide x 4.4m high
•Shovel: 4m – 4.9m wide
•Gradients: Up to +/- 18o
•Custom deployment frame
•Floor pressure: 0.15MPa
•Total Power: 272 KW
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PIKE RIVER COAL
Continuous Miner
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PIKE RIVER COAL
Continuous Miner
•Base Machine: Wirth H4.40 Miner Bolter
•Cutting Height: 2.5m – 4.0m
•Machine/Cutting Width: 3.5m
•Tracks: 560mm width
•Floor Pressure: 0.2MPa
•Drill Rigs: ARO S2500 (2.4m)
•Rib Rigs: ARO S2500 (1.8m)
•Coal Sizer fitted
•Cross Levelling via tracks
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PIKE RIVER COAL
Continuous Miner
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PIKE RIVER COAL
Development Considerations
•No recent history in Brunner Seam
•Multinational experience, expectations, norms
•Coal roof, coal floor, 5 – 30o seam grades
•Setting challenging but realistic KPI values
•Data gathering and analysis
•New mining equipment to site (and market)
•Strata control system
•Coal clearance by water – no conveyors
•Hot seat change out? – 6.5km to amenities; 1.2km to portal; 2.3km to pit bottom
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PIKE RIVER COAL
Mining Extraction by Hydraulic Monitor
Parameters for success:– Strong roof and floor– Strong but fractured coal– Moderate to thick seam
(3 - 13 metres)– Moderately dipping
seam (5° - 30°)– Good supply of water
(Pike has rainfall of over 6m/year in mine vicinity)
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PIKE RIVER COAL
Sub-Rise Extraction
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PIKE RIVER COAL
Sub-Level Extraction
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PIKE RIVER COAL
Pike River Fly Over
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PIKE RIVER COAL Production Timetable
Forecast to meet coal seam in late August 2008
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
2009 2010 2011 2012 2013
Year ended 30 June
Ton
nes
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PIKE RIVER COAL
Project Summary
• NZ’s second largest coal export mine when at 1 Mtpa
• Premium quality hard coking coal at 1% ash
• Tunnel at 2,164m, through the Hawera Fault with coal in late September 2008
• Most surface infrastructure complete with train loadout commenced
• Major local employer with 65 full time staff now, 18 more due to commence, building to 150 at full production in mid 2009
• Transport system solution in place from coal face to port with all contracts let and underway
• $30 - $40M in local spend annually