NEWLANDS HIGHWALL FAILURE OCT 2015 2009 · 2019-03-19 · Jul Aug Sep 2014 Risk Assessment for...
Transcript of NEWLANDS HIGHWALL FAILURE OCT 2015 2009 · 2019-03-19 · Jul Aug Sep 2014 Risk Assessment for...
NEWLANDS HIGHWALL FAILURE OCT 2015
2014 EVENT TIMELINE
17-390 File A Page 1 of 10
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Risk Assessment for intro of Highwall mining completed
25/9/2014
Risk Assessment for Strata Failure completed
8/7/2014
17-390 File A Page 2 of 10
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NEWLANDS HIGHWALL FAILUREOCT 2015
2015 EVENT TIMELINE
17-390 File A Page 3 of 10
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2015Jun Jul Aug Sep Oct
RISK ASSESSMENT ‐ HW MINING BANROCK B PIT
14/9/2015
PTM RAMP B BANROCK PANEL 2 ENTRIES 1‐10
24/9/2015
INCIDENT DATE
16/10/2015
SITE INSPECTION
27/10/2015
GLENCORE COAL GEOTECH DESIGN REPORT
29/6/2015
PTM RAMP B BANROCK PANEL 1 ENTRIES 1‐10
16/9/2015
PTM RAMP B BANROCK PANEL 3 ENTRIES 1‐10
1/10/2015
SITE INSPECTION
26/10/2015
17-390 File A Page 4 of 10
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Radar continues to indicate deformation across the highwall. Three zones in particular should still be classified as most likely failure locations
17-390 File A Page 5 of 10
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Area inbye of stacker and cone of coal considered a red hazard with no entry at the moment
Green area compromising the stacker and the cone of coal is considered a green area for the removal of the coal and stacker
Amber area immediately north of the stacker of to the small loader is considered an amber risk with risk assessment and spotter required for entry
Area north of the small loader is considered a high risk area due to deformation continued to be monitored from the radar. This area would be considered an amber risk zone one a bund has been dozed in place in a systematic manner and once the three red hotspots on the radar have indicated a reduced deformation and once the second radar has been implemented in the north. The method of bunding would be determined through risk assessment.
17-390 File A Page 6 of 10
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Release17-390 File A Page 7 of 10
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Release17-390 File A Page 8 of 10
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Release17-390 File A Page 9 of 10
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Release17-390 File A Page 10 of 10
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