Technology Impact on Coal Mine Safety Management Intelligent MinesTongyu Liu

Shandong Coal Mine Safety Technology Innovation Consortium, China Shandong Micro-Sensor Photonics Ltd, China

Coal mine industry in ChinaMajor coal mine hazardsWorker safety strategies:Methane drainage;Automation;Information technology for hazard detection & control;Vision for future mining:Green mining;Intrinsic safety technology;Virtual reality intelligent mining;SummaryOutline

Coal is the major energy source attributing to>75% electrical power; >60% civic commercial energy source;>70% chemical material;

Last decades see production tripled to 3.5 billion ton in 2011.

Coal mine industry In China

Coal mine fatalitiesPeak coal mine fatality 7500in 1989 , dropped

Safety measure #1: small cola mine closure and merger reduced total no from 25,000 in 2009 to ~10,000 mines in 2012.SOE provincial minesTown and village owned small minesSOE large minesfatalities, percentage

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Major coal mine hazards*Coal mine accidents during 2003~2008

Methane and roof accounts for 75% of fatalities;Coal & rock burst and coal seam stress become more severe;MethaneRooftransportFlooding 8%MethaneRoofflooding

42.96%

1.70%

8.70%

33.10%

1.20%

8.00%

1.00%

3.10%

2001

Gassy mine distribution in ChinaOver 50% underground coal mines in China are gassy

*Methane drainage in state owned large minesTill end 2008coal bed methane drainage reach 26.1 billion m3,methane hazards have been steadily drop down as drainage increased. Safety measure #2:Methane Drainage & UtilizationDrainageNo of CH4 drain mines

Industrial GBit internet as communication back bone; 35KV power distribution station monitoring Work face automation; Central water pump automation system Conveyor belt automation Haulage automation Coal washery automation Industrial video monitoring system Large screen control room.Safety measure #3: Comprehensive automation

* Machine cutting height > 5m; top coal caving > 15 m; Conveyor belt 3000 ton/hr; Annual production > 12 million ton in one mine;

Automation dramatically reduced fatality rate

*Methane drainage automation systemMonitor and control of methane flow rate, temperature, concentration, pressure.

*On-line ventilation monitor & controlOnline monitoring of ventilation air flow, efficiency, temperature and equipment condition.

Remote control of water pump

Coal mine hoisting system and production output monitor

Coal washery automation system

*Safety measure 4: Information technology for hazard monitor and controlMethane, CO, ventilation, temperature monitor and hazard control system is required by law for every coal mine;Industrial video monitor at key points.

Industrial video monitor system

Coal mine safety trend

*Vision for future mining Green miningTraditional mining caused surface subsidenceGreen mining: subsidence minimization and transformation

*Vision for future mining - Intrinsic safety technologiesFiber optic methane sensor: does not need electricity safer than electrical deviceFiber optic micro-seismic sensor forroof fall, coal & rock burst early detection

Vision for future mining - Intelligent mine with 3D-GIS and virtual reality display

Consistent improvement of coal mine worker safety in the last decade in China has demonstrated the positive impact of deploying automation and information technologies;Future mines will become intrinsically safe, intelligently managed and less damage to the landscape;European and international safety expertise and technologies have been actively contributed to enable the changes in China;Future focus will be on workers health and the environment.Summary

** 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.** 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.** 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.*