BURTON COAL MINE BURTON HIGHWALL CHALLENGE Matt Tsang and David Wang 19 August 2014
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BURTON COAL MINE
BURTON HIGHWALL
CHALLENGE
Matt Tsang and David Wang
19 August 2014
2Burton Coal Mine - Burton Highwall Challenge
Location
Burton Coal Mine - Burton Highwall Challenge 3
Mining Scenario - Terrace Mining
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Mining Scenario
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Geology
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Geotechnical Baseline Study
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Block 1 Wedge
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17/12/12
Burton Coal Mine - Burton Highwall Challenge
Block 1 WedgeRamp 2 Fault
Southern FaultCorridor Fault
Australia Day Highwall Event
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27/01/13
Block 1 Wedge
Corridor FaultRamp 2 FaultSouthern Fault
27/01/13
Geotechnical Analysis
12
(GeoTek Solutions, 2013)
Burton Coal Mine - Burton Highwall Challenge
Highwall Buttress Method
13
50° softwall
Burton Coal Mine - Burton Highwall Challenge
70° final batter
Burton Coal Mine - Burton Highwall Challenge
Geotechnical Risk Management
14
Remote Controlled Dozer preparing catch
bunds in high risk area
Operator
Fall of Ground Definitions & Controls
15
Radar file from May 2013 showing two pixels that had been activated by Minor
Fall of Ground – in this case, an alarm was not required due to the ability of the
physical controls to contain all of the material
Burton Coal Mine - Burton Highwall Challenge
Time-dependent Effects
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Burton Coal Mine - Burton Highwall Challenge
Lowwall Instability
17
Key Learnings
• The Burton Widening Pit is an example of safe mining in a
deep, steep and long pit with significant geological challenges
• Time-dependent effects are difficult to capture in geotechnical
models and must be managed as they arise
• With adequate management systems, slope stability radars
can provide reliable monitoring of large scale slope instability
to reduce risk to an acceptable level
• However, radar monitoring is not a cover-all tool and small
scale instabilities must be managed in other ways
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Acknowledgements
We would like to thank the following people for their significant
contributions throughout the entire process:
• Paul Maconochie and Thomas Sullivan of GeoTek Solutions
• Alex Duran, Adrian Smith, Dane Pope and Greg Kennedy of PSM
• Dr. Murali Gadde of Peabody Energy
• Dr. John Simmons of Sherwood Geotechnical & Research Services
• Dr. Renate Sliwa of Integrated Geoscience
• Dr. Ian Clark of Geonet Consulting Group
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Thank you
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