Transcript the present situation and future of mine ventilation technology in china

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!