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THE PRESENT SITUATION AND FUTURE OF MINE VENTILATION TECHNOLOGY IN CHINA OUTLINE 1 THE IMPORTANCE OF COAL MINE VENTILATION 2 THE PRESENT SITUATION OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 3 THE FUTURE OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 4 ACKNOWLEDGMENTS OUTLINE 1 THE IMPORTANCE OF COAL MINE VENTILATION 2 THE PRESENT SITUATION OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 3 THE FUTURE OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 4 ACKNOWLEDGMENTS 1 THE IMPORTANCE OF COAL MINE VENTILATION 1.1 Component and Targets of Coal Mine Ventilation Components: Including fan, ventlation network, ventlation establishment , Monitoring System. etc . Target 1: During normal production period, provide fresh air to mine continuously, to ensure the tempertaure, methane and dust under safe limitation. Target 2: During accidents period, control of the amount of wind direction and wind timely and effectively, Prevent the expansion of disasters, and reduce casualties and property losses. 1 THE IMPORTANCE OF COAL MINE VENTILATION 1.2 Effects of ventilation in several major mine accidents Chain reactions of ventilation, methane, fire, explosions. air leak+coal oxidation → spontaneous combustion + oxygen +methane→explosion air+fire→ fire accident+ methane→explosion 1 THE IMPORTANCE OF COAL MINE VENTILATION 1.3 The particularity and importance of ventilation to current mining environment Ventlation parameters always changing in time and space; ( Requires dynamic management ) Ventilation network is too big and complex; ( Requires graphical show ) Traditional manual mensure and table management could not fulfill modern mine production, especially to deep and coal seams mine ; ( Traditional technology could not protect ventilation to be credible ) All of this requires more advanced technology THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.1 History of China ventilation technology China’s mine ventilation technology has a long history more than 3000 years. Both Phoenix mountains mining sites and Daye mining sites have, natural ventilation system, more than 3000 years. Chinese mining industry and ventilation technology has a Sharp increase during the 18-19 century Industrial Revolution in Europe. After long-term accumulation and continuous, ventilation plays an important role in coal mine production. THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.2 Policy guidelines of China ventilation technology Methane is one of the biggest hazards in China now, as to methane, there are 2 policies as follows: Policy 1: first deflating then mining, outputs based on ventilation, monitoring and control. Policy 2: credible ventilation, deflating and mining are regular, efficient management, efficient monitoring . THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.2 Policy guidelines of China ventilation technology Outputs based on ventilation is defined as the core of mine ventilation management, includes 2 parts: Change of outputs is calculated by the actual air-flux of mine and whole mining working faces. Reason of lack of air: change of working conditions(such as forecasting methane is to be lower) change of outputs Have reasonable ventilation mode and system. Outputs based on ventilation has 3 levels: All of the working faces have enough air by their actual needs Reasonable area ventilation system Reasonable mine ventilation mode and system THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3 Present situation of China ventilation technology Ventilation mode Establishments of ventilation system China ventilation technology Fast manual measure of ventilation parameters Ventilation monitoring system Dynamic simulation and analysis of ventilation net work THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.1 Ventilation mode Could be divided into center, center-boundary, center-diagonal, etc, all based on the location relationship between intake shaft and air-return shaft Ventilation mode Could be divided into push system, pull system and pushpull system, all based on the working mode of main fan Could be divided into Y mode, W mode, Z mode, H mode, etc, all based on ventilation technology to solve methane THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.1 Ventilation mode center, center-boundary, center-diagonal, etc. center center-boundary center-diagonal territorial THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.1 Ventilation mode push system, pull system and push-pull system. push system pull system no matter what kind of ventilation mode, it’s necessary to decrease the dynamic pressure loss of air-return shaft. push-pull system Setting assistant fan under mine when resistance is too high. THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.1 Ventilation mode Y mode, W mode, Z mode, H mode, etc U mode Y mode W mode H mode Z mode There are more than 10 modes which includes:U mode(advancing, retreating )、 Z mode(advancing, retreating )、 Y mode(advancing, retreating )、W mode (2 advancing 1 retreating 、1 advancing 2 retreating ). THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.2 Establishment of ventilation system Main fans Establishment of ventilation system Booster fans Ventilation door ,Air regulators ( long-distance control) THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.2 Establishment of ventilation system Main fans Long axis fans cyclone fans Cyclone fans have most of the markets, because it is easy to install, little accessories, easy to return direction of air.etc. There are more than 50 kinds of cyclone fans now in China, it can be used to all of the mines. THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.2 Establishment of ventilation system Booster fans Single Doubl level e level Several level Low noise CycloIntelli Cyclo- ne of -gent ne plastic Be widely used in various types of coal mine headings to push or pull air. Safe, explosion-proof, stable, low noise, high efficiency, high pressure, large flux.etc. THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.2 Establishments of ventilation system Using of booster fans (To dilute methane, cool air, remove dust.etc) 4 kinds:long push short pull, long pull short push, long push short push, long pull short pull. long push short pull long pull short push long push short push long pull short pull THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.2 Establishments of ventilation system Ventilation door ,Air regulators ( controlled by host computer) Intelligent control THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.3 Ventilation monitoring system Monitoring system Main fans monitoring system Ventilation monitoring system Booster fans monitoring system Wind speed and direction sensor Booster fans flux sensor Wind pressure sensor THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.3 Ventilation monitoring system Monitoring system Substation Host computer Pressure sensor Speed and direction sensor THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.3 Ventilation monitoring system Main fans monitoring system Wind speed Pressure …… power rotate speed temperature Open & close status Methane concentration THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.3 Ventilation monitoring system Booster fans monitoring system Wind speed Pressure power rotate speed temperature Open & close status …… Methane concentration THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.3 Ventilation monitoring system Wind speed and direction sensor Mainly used to measure wind speed, wind direction of main roadway; Very long-time to continue monitor; Wind speed measure range:(0.2~ 15)m/s; Precision:0.1m/s; Wind speed and direction sensor Max measure range :750 m3/s。 THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.3 Ventilation monitoring system Booster fans flux sensor Mainly used to measure wind speed, and monitor the open & close status of booster fans; Very long-time to continue monitor; Wind speed measure range: 20~ 999 m3/min; Precision:1 m3/min. Booster fans flux sensor THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.3 Ventilation monitoring system Wind pressure sensor Mainly used to measure pressure of important places; Very long-time to continue monitor; Pressure measure range:-5000~5000 pa; Precision: 10 pa; Has 4 kinds of signal output modes. Wind pressure sensor THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.4 Fast manual measure of ventilation parameters High precision barometer Fast manual measure of ventilation parameters High precision wind speed and direction sensor Laser range finder THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.4 Fast manual measure of ventilation parameters High precision barometer (Pressure fast measure in resistance measure works) Parameters Range Precision Absolute pressure 600-1200 hpa ±1hpa Relative pressure ±400mmH2O ±1mmH2O temperature -10℃~40℃ ±0.5℃ humidity 50%~99%RH ±4%RH wind speed 0.6~15m/s ±0.2-0.5m/s Parameters temperature Range Precision 0℃—40℃4 ±1.0℃ 0.4—5m/s ±0.2m/s 5—10m/s ±0.3m/s >10-15m/s ±0.4m/s JFY-2 pressure sensor wind speed Pressure difference -3500~+3500 Pa JFY-4 pressure sensor Pressure 95-120KPa ±2% ±2% THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.4 Fast manual measure of ventilation parameters High precision wind speed and direction sensor (Wind speed fast measure in resistance measure works) Mainly used to measure wind speed of danger ,such as no wind, little wind, and Worked-out area; Very long-time to continue monitor; Wind speed measure range: 0.2~15 m/s; High precision wind speed and direction sensor Precision:±0.2 -0.4 m/s. THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.4 Fast manual measure of ventilation parameters Laser range finder size fast measure in resistance measure works Mainly used to measure size of roadway; Distance measure on the ground: 0.001~200 m; Distance measure under ground : 0.001~100 m; Laser range finder Precision:0.001 m; THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.5 Dynamic simulation and analysis of ventilation net work Network map specialization drawing Report forms auto creating Dynamic simulation and analysis of ventilation net work Network simulation Dynamic monitoring and calculation Problems analysis and warning Dynamic two-dimensional and three –dimensional show THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.5 Dynamic simulation and analysis of ventilation net work Map specialization drawing easy to learn ,easy to draw, it is fit for miners those who have little knowledge. Inport Imitate CAD CAD map mode Easy to Easy to learn draw THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.5 Dynamic simulation and analysis of ventilation net work Report forms auto creating this system can store data and data report forms creating automatically. Data auto store Data Data auto Inquiring & classify modifying THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.5 Dynamic simulation and analysis of ventilation net work Network simulation provide optimizing schemes for ventilation system change, such an connect 2 heading faces or close some old roadways . THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.5 Dynamic simulation and analysis of ventilation net work Monitoring+dynamic calculation+ analysis+show Monitoring some wind parameters of important places by advanced equipments, then doing dynamic calculation, analysis, and show some relating changing wind parameters. 1.511.53 1.5 1.45 Basic data Dynamic Dynamic calcul monitoring data -ation monitoring data analysis Dyna- calculating data analysis show mic THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.5 Dynamic simulation and analysis of ventilation net work Monitoring+dynamic calculation+ analysis+show Monitoring some wind parameters of important places by advanced equipments, then doing dynamic calculation, analysis, and show some relating changing wind parameters. THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.5 Dynamic simulation and analysis of ventilation net work Monitoring+dynamic calculation+ analysis+show Monitoring some wind parameters of important places by advanced equipments, then doing dynamic calculation, analysis, and show some relating changing wind parameters. THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.5 Dynamic simulation and analysis of ventilation net work Problems analysis and warning Monit- Calcu- oring lating data data Speed flux out of out of limit limit Press -ure out of limit short circuit wind Cycle wind THE PRESENT SITUATION OF COAL MINE 2 VENTILATION TECHNOLOGY IN CHINA 2.3.5 Dynamic simulation and analysis of ventilation net work Three–dimensional dynamic show All of the wind imformation could be seen on the three– dimensional dynamic map. And could make yourselves into the roadway. 3 THE FUTURE OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 3.1 The future All of the technology mentioned before were used to nearly all of the mine in China. The values and effects are very great and obvious. Could be used to all kinds of mine all of the world, better effects especially to the mines which have monitoring system. 3 THE FUTURE OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 3.2 Ventilation monitoring Ventilation monitoring Monitor ing data Monitor ing data wireless transfer moment transfer Monitor ing data Share to all instantly Establish a special subsyste m for ventilati on 3 THE FUTURE OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 3.2 Ventilation monitoring Main fans & Booster fans More advanc -ed Main fans & Booste -r fans Bigger power, larger flux, higher pressure; more stable wind; It could change the vane angle of fans itself by actual situations of mine. 3 THE FUTURE OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 3.2 Ventilation monitoring Wind speed & direction sensor Could be used to all place of the More exact wind sensor mine for long time; Nearly no fixing; Speed range: 0.05~60 m/s; Precision: ±0.05 m/s; Direction range: 360°. 3 THE FUTURE OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 3.2 Ventilation monitoring Pressure sensor More exact pressure sensor Could be used to all place of the mine for long time; Nearly no fixing; Pressure range: -5000~5000 Pa; Precision: ±1 Pa。 3 THE FUTURE OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 3.3 Intelligent monitoring & controlling Intelligent monitoring & controlling Doors & Air regulators are controlled by host computer Wind Speed & methane concentration out of limit、 3 THE FUTURE OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 3.4 Effects when emergency Effects when emergency Outburst Best escape routes Explosions fire Best rescue routes Intelligent escape routes indicator …… …… 3 THE FUTURE OF COAL MINE VENTILATION TECHNOLOGY IN CHINA 3.5 End That‘s the end of this topic! 4 ACKNOWLEDGMENTS Thanks for both of the TURKEY and CHINA Gov and some related Groups to provide this so good chance and platform. It is so great and it will be unforgettable forever! Thanks to all of! And, Best wishes for this conference and all of you! Thank you!