CN207020169U - Consider the spontaneous combustion in goaf model test platform of atmospheric pressure - Google Patents
Consider the spontaneous combustion in goaf model test platform of atmospheric pressure Download PDFInfo
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Abstract
A kind of spontaneous combustion in goaf model test platform for considering atmospheric pressure is the utility model is related to, including control system and model system, feature are：Control system is electrically connected PLC, data collecting card by industrial computer, and PLC is electrically connected each control piece, data collecting card is electrically connected barometer, various kinds of sensors, and the facility that model system is provided with experiment chamber by testing gallery side is formed；Also disclose a kind of test method for the spontaneous combustion in goaf model test platform for considering atmospheric pressure.It can be achieved to working face inclination angle, the simulation of airflow temperature, air humidity environmental condition, model is reliable, study atmospheric pressure change influences to provide approach under varying environment parameter on goaf thermo parameters method, it can be widely used for mine goaf spontaneous fire simulation and disclose in research of the atmospheric pressure change to the affecting laws of mine goaf spontaneous fire, while spontaneous fire can be obtained and produce Gas concentration distribution situation.
Description
Technical field
It the utility model is related to coal mine gob spontaneous fire scaled physical model experimental technique, and in particular to one kind considers
The spontaneous combustion in goaf model test platform and test method of atmospheric pressure.
Background technology
Coal is the main body energy in China, and national coal production in 2016 and total quantity consumed respectively reach 34.5 hundred million tons and 39
Hundred million tons, primary energy consumption accounting is about 62.3%.Due to the limitation of nature of coal seam condition, the 90% of coal in China yield relies on well
Work is exploited, and is influenceed by complicated seam preservation with production specifications, and China's coal-mine is more serious by influence of fire, according to statistics, I
At state 657 in emphasis colliery, the mine quantity for having Period of Coal Seam Spontaneous Combustion to be inclined to accounts for 54.9%, and shortest spontaneous combustion period is less than 3 months
Mine quantity account for more than 50%, freely burning fire has had a strong impact on the safety in production in colliery.
Underground goaf is the multiple area of mine spontaneous combustion fire, and burning things which may cause a fire disaster appears in the oxidized zone of goaf more, is left loose
Coal body is as ignition source, and in goaf, continuation is leaked out under oxygen supply effect, and oxidation produces heat product in coal and rock accumulation of heat environment
Gather to ignition point after-fire.Meanwhile spontaneous combustion in goaf also easily triggers the secondary disasters such as gas, coal-dust explosion, serious threat
The underground operators securities of the lives and property.Therefore effective research meanses are taken, is accurately positioned high temperature burning things which may cause a fire disaster, eliminate Self-burning
Calamity hidden danger turns into the task of top priority of coal in China safety in production.
Physical experiments are that live actual zoom model is placed in test body, based on the theory of similarity, full
The basic condition of similarity of foot（It is similar with single-valued conditions including geometry, motion, heating power, power）Under, by being obtained in model test
Some parameters between rule push back again in prototype, so as to obtain the regularity cognition to prototype, real processes are simulated with this
The test method of principal character.In recent years, physical experiments are opened because it is directly perceived, is easy to the features such as measurement to be widely used in colliery
During adopting among all kinds of Study on Safety Problem.The influence factor of coal mine gob spontaneous fire has a lot, according to practice and reason
Show by research, mining field pressure change has on spontaneous combustion in goaf distribution law of temperature field to be significantly affected, existing goaf
Spontaneous fire analogue means does not consider this factor of change of atmospheric pressure, and the change of atmospheric pressure causes experiment to tie up to 10kPa
Fruit reliability reduces, and can not accurately instruct the development of live fire extinguishing work.Based on this, a kind of simulated atmosphere buckling shadow is needed badly
Loud goaf temperature field simulation test platform.
The content of the invention
The purpose of this utility model is to provide a kind of spontaneous combustion in goaf model test platform for considering atmospheric pressure, can be real
Now the infiltration goaf field under different atmospheric pressures, gas concentration field and temperature field Evolution are disclosed, Jin Erti
High spontaneous combustion in goaf danger zone and high temperature burning things which may cause a fire disaster positioning precision.
The technical solution adopted in the utility model is：A kind of spontaneous combustion in goaf model test for considering atmospheric pressure is put down
Platform, including control system and model system, feature are：Control system is electrically connected PLC, data collecting card by industrial computer,
PLC is electrically connected thermocouple, model ventilation blower, positive pressure fan, air humidifier, hydraulic prop, air heater, and data are adopted
If if truck is electrically connected barometer, some air velocity transducers, dry temperature sensor, some gas sensors, humidity and passed
Sensor, some pressure sensors, the facility that model system is provided with experiment chamber by testing gallery side is formed, in testing gallery
Facility includes one end and blocked with second air door and regulation wind window, and the other end is blocked with first of air door, set on first of air door
There is the positive pressure wind pipe for connecting positive pressure fan, testing the facility in chamber includes the be hinged experimental box body model in bottom support bracket side, separately
The hydraulic prop that side is provided with fixed pulley by two tops is withstood, and is additionally provided with barometer, experimental box body model includes intake
Entrance is provided with air humidifier, air heater, sets pressure sensor at working face, return aircourse end sets model ventilation blower, work
Make face coal mining direction and be provided with coal body, set goaf to crush coal petrography in goaf, if while being set at the coordinate grid of goaf
Dry temperature sensor, gas sensor, air velocity transducer, humidity sensor, the actual position in proportion in simulation mine set thermocouple.
Wherein：θ is simulation mine seam inclination, degree, a pressure sensor is set again in return aircourse and working face junction.
Wherein：Experimental box body top sets be hinged opening board, and bottom sets be hinged stripper.
It is convenient to understand the test method for introducing a kind of spontaneous combustion in goaf model test platform for considering atmospheric pressure,
Including by taking certain working face of colliery one as an example, feature is：1. experimental box body top opening board is opened, by the likelihood ratio, to experimental box
Body carries out the pit coal body and goaf crushes coal petrography and mated formation, while on each coordinate grid node of mined out Division
Data collecting card, mould are accessed after laying air velocity transducer, temperature sensor, gas sensor, humidity sensor, pressure sensor
Intend spontaneous combustion in goaf position to be distributed into thermocouple and access PLC, cover experimental box body top opening board, start industrial computer, if
The pit coal inclination layer, working face blast, work surface humidity, working face temperature, spontaneous fire point temperature parameter are put, closes experiment lane
The twice air door in road, regulation wind window is opened, and industrial computer sends instruction and controls hydraulic prop to set seam inclination θ by PLC
For the ore deposit value, 2. start positive pressure fan, the aperture of manual adjustment damper, when air pressure is calculated as setting atmospheric value and stably
When, stop the regulation of regulation wind window, 3. by ore deposit parameter Boot Model ventilation blower, air humidifier, air heater, the thermoelectricity
It is even, after reaching identical with the ore deposit parameter and stable, after certain time, each sensing data is gathered, using finite element difference
Method draws goaf temperature field cloud atlas.
Wherein：4. obtain another atmospheric value goaf temperature field cloud atlas again, industrial computer restarts after closing, directly
Start positive pressure fan, the aperture of manual adjustment damper, when air pressure is calculated as another setting atmospheric value and stabilization, stop adjusting
The step of saving the regulation of air regulator, repeating 3. obtains another goaf temperature field cloud atlas.
Wherein：Next goaf temperature field cloud atlas can be obtained by repeating 4. step.
Wherein：Can also finite element difference method be used to obtain Gas concentration distribution figure.
The beneficial effects of the utility model are：It can be achieved to working face inclination angle, airflow temperature, air humidity environmental condition
Simulation, model is reliable, and research atmospheric pressure change influences to provide way under varying environment parameter on goaf thermo parameters method
Footpath, it can be widely used for mine goaf spontaneous fire simulation and disclose atmospheric pressure change to mine goaf spontaneous fire
In the research of affecting laws, while spontaneous fire can be obtained and produce Gas concentration distribution situation.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 the utility model control system architecture schematic diagrams；
Fig. 2 the utility model model system overlooking the structure diagrams；
Fig. 3 the utility model A-A diagrammatic cross-sections；
Fig. 4 the utility model experimental box body model structure schematic diagrames；
Goaf thermo parameters method figure during Fig. 5 the utility model atmospheric pressure 99.3kPa；
Goaf thermo parameters method figure during Fig. 6 the utility model atmospheric pressure 100.3kPa.
1. industrial computer in figure, 2. experiment chambers, 3. positive pressure fans, 4. first of air door, 5. second air doors, 6. malleations
Blower fan, 7. regulation wind windows, 11.PLC, 12. goafs, 13. working faces, 14. intakes, 15. return aircourses, 16. models
Ventilation blower, 17. air humidifiers, 18. air heaters, 19. thermocouples, 20. air velocity transducers, 21. temperature sensors, 22.
Gas sensor, 23. humidity sensors, 25. hydraulic props, 27. pressure sensors, 30. barometers, 31. testing galleries, 40.
Coal body, 50. goafs crush coal petrography, 51. bottom support brackets, 60. fixed pulleys, 100. data collecting cards.
Embodiment
First embodiment, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of spontaneous combustion in goaf model test for considering atmospheric pressure
Platform, including control system and model system, feature are：Control system is electrically connected PLC11, data acquisition by industrial computer
Card 100, PLC11 be electrically connected thermocouple 19, model ventilation blower 16, positive pressure fan 3, air humidifier 17, hydraulic prop 25,
Air heater 18, if data collecting card 100 is electrically connected barometer 30, some air velocity transducers 20, dry temperature sensor
21st, some gas sensors 22, some humidity sensors 23, some pressure sensors 27, model system is by the side of testing gallery 31
Formed provided with the facility in experiment chamber 2, the facility in testing gallery 31 includes one end second air door 5 and regulation wind window 7
Closure, the other end are blocked with first of air door 4, and first of air door 4 is provided with the positive pressure wind pipe 6 for connecting positive pressure fan 3, test cave
Facility in room 2 includes the side of bottom support bracket 51 and is hinged experimental box body model, and opposite side is provided with fixed pulley 60 by two tops
Hydraulic prop 25 is withstood, and is additionally provided with barometer 30, experimental box body model include the entrance of intake 14 be provided with air humidifier 17,
Air heater 18, pressure sensor 27 is set at working face 13, the end of return aircourse 15 sets model ventilation blower 16, and working face 13 is mined
Direction is provided with coal body 40, sets goaf to crush coal petrography 50 in goaf 12, if while being set at the coordinate grid of goaf 12
Dry temperature sensor 21, gas sensor 22, air velocity transducer 20, humidity sensor 23, the actual position in proportion in simulation mine
If thermocouple 19.
Second embodiment, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of spontaneous combustion in goaf model test for considering atmospheric pressure
Platform, including control system and model system, feature are：Control system is electrically connected PLC11, data acquisition by industrial computer
Card 100, PLC11 be electrically connected thermocouple 19, model ventilation blower 16, positive pressure fan 3, air humidifier 17, hydraulic prop 25,
Air heater 18, if data collecting card 100 is electrically connected barometer 30, some air velocity transducers 20, dry temperature sensor
21st, some gas sensors 22, some humidity sensors 23, some pressure sensors 27, model system is by the side of testing gallery 31
Formed provided with the facility in experiment chamber 2, the facility in testing gallery 31 includes one end second air door 5 and regulation wind window 7
Closure, the other end are blocked with first of air door 4, and first of air door 4 is provided with the positive pressure wind pipe 6 for connecting positive pressure fan 3, test cave
Facility in room 2 includes the side of bottom support bracket 51 and is hinged experimental box body model, and opposite side is provided with fixed pulley 60 by two tops
Hydraulic prop 25 is withstood, and is additionally provided with barometer 30, experimental box body model include the entrance of intake 14 be provided with air humidifier 17,
Air heater 18, pressure sensor 27 is set at working face 13, the end of return aircourse 15 sets model ventilation blower 16, and working face 13 is mined
Direction is provided with coal body 40, sets goaf to crush coal petrography 50 in goaf 12, if while being set at the coordinate grid of goaf 12
Dry temperature sensor 21, gas sensor 22, air velocity transducer 20, humidity sensor 23, the actual position in proportion in simulation mine
If thermocouple 19.
Wherein：θ is simulation mine seam inclination, degree, sets a pressure again in return aircourse 15 and the junction of working face 13 and passes
Sensor 27.
3rd embodiment, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of spontaneous combustion in goaf model test for considering atmospheric pressure
Platform, including control system and model system, feature are：Control system is electrically connected PLC11, data acquisition by industrial computer
Card 100, PLC11 be electrically connected thermocouple 19, model ventilation blower 16, positive pressure fan 3, air humidifier 17, hydraulic prop 25,
Air heater 18, if data collecting card 100 is electrically connected barometer 30, some air velocity transducers 20, dry temperature sensor
21st, some gas sensors 22, some humidity sensors 23, some pressure sensors 27, model system is by the side of testing gallery 31
Formed provided with the facility in experiment chamber 2, the facility in testing gallery 31 includes one end second air door 5 and regulation wind window 7
Closure, the other end are blocked with first of air door 4, and first of air door 4 is provided with the positive pressure wind pipe 6 for connecting positive pressure fan 3, test cave
Facility in room 2 includes the side of bottom support bracket 51 and is hinged experimental box body model, and opposite side is provided with fixed pulley 60 by two tops
Hydraulic prop 25 is withstood, and is additionally provided with barometer 30, experimental box body model include the entrance of intake 14 be provided with air humidifier 17,
Air heater 18, pressure sensor 27 is set at working face 13, the end of return aircourse 15 sets model ventilation blower 16, and working face 13 is mined
Direction is provided with coal body 40, sets goaf to crush coal petrography 50 in goaf 12, if while being set at the coordinate grid of goaf 12
Dry temperature sensor 21, gas sensor 22, air velocity transducer 20, humidity sensor 23, the actual position in proportion in simulation mine
If thermocouple 19.
Wherein：θ is simulation mine seam inclination, degree, sets a pressure again in return aircourse 15 and the junction of working face 13 and passes
Sensor 27.
Wherein：Experimental box body top sets be hinged opening board, and bottom sets be hinged stripper.
Fourth embodiment, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of spontaneous combustion in goaf for considering atmospheric pressure
The test method of model test platform, including by taking certain working face of colliery one as an example, feature is：1. open experimental box body top to open
Plate is opened, by 1:50 likelihoods ratio, the pit coal body 40 is carried out to experimental box body and goaf crushes coal petrography 50 and mated formation, while is being adopted
Each coordinate grid that dead zone 12 divides（600 millimeters of abscissa interval, 500 millimeters of ordinate interval, 80 grids is divided altogether）
Air velocity transducer 20, temperature sensor 21, gas sensor 22 are laid on node（Carbon monoxide transducer）, humidity sensor
23rd, data collecting card 100, simulation spontaneous combustion in goaf position are accessed after pressure sensor 27（2700 millimeters, 1250 millimeters）
It is distributed into thermocouple 19 and accesses PLC, cover experimental box body top opening board, starts industrial computer, pit coal inclination layer θ is set（10
Degree）, working face blast (inlet side machinery blast 0.66kPa, the kPa of return side machinery blast 0.79), work surface humidity（45%）、
Working face temperature（21 degree）, spontaneous fire point temperature（60 degree, i.e. electric thermo-couple temperature）Parameter, close the twice wind of testing gallery 31
Door, regulation wind window is opened, industrial computer sends instruction and passes through PLC（Programmable controller）Control hydraulic prop 60 makes seam inclination
θ is set as the ore deposit value（10 degree）, 2. start positive pressure fan 3, the aperture of manual adjustment damper 7, when barometer 30 is setting
Atmospheric value 99.3kPa and it is stable when, stop the regulation of regulation wind window, 3. by ore deposit parameter Boot Model ventilation blower 16, the air
Humidifier 17, air heater 18, thermocouple 19, after reaching identical with the ore deposit parameter and stable, certain time（5 minutes）
Afterwards, each sensing data is gathered, the temperature field cloud atlas of goaf 12 is drawn using finite element difference method.For the utility model air
Goaf thermo parameters method figure when pressing 99.3kPa.
5th embodiment, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of spontaneous combustion in goaf for considering atmospheric pressure
The test method of model test platform, including by taking certain working face of colliery one as an example, feature is：1. open experimental box body top to open
Plate is opened, by 1:50 likelihoods ratio, the pit coal body 40 is carried out to experimental box body and goaf crushes coal petrography 50 and mated formation, while is being adopted
Each coordinate grid that dead zone 12 divides（600 millimeters of abscissa interval, 500 millimeters of ordinate interval, 80 grids is divided altogether）
Air velocity transducer 20, temperature sensor 21, gas sensor 22 are laid on node（Carbon monoxide transducer）, humidity sensor
23rd, data collecting card 100, simulation spontaneous combustion in goaf position are accessed after pressure sensor 27（2700 millimeters, 1250 millimeters）
It is distributed into thermocouple 19 and accesses PLC, cover experimental box body top opening board, starts industrial computer, pit coal inclination layer θ is set（10
Degree）, working face blast (inlet side machinery blast 0.66kPa, the kPa of return side machinery blast 0.79), work surface humidity（45%）、
Working face temperature（21 degree）, spontaneous fire point temperature（60 degree, i.e. electric thermo-couple temperature）Parameter, close the twice wind of testing gallery 31
Door, regulation wind window is opened, industrial computer sends instruction and passes through PLC（Programmable controller）Control hydraulic prop 60 makes seam inclination
θ is set as the ore deposit value（10 degree）, 2. start positive pressure fan 3, the aperture of manual adjustment damper 7, when barometer 30 is setting
Atmospheric value 99.3kPa and it is stable when, stop the regulation of regulation wind window, 3. by ore deposit parameter Boot Model ventilation blower 16, the air
Humidifier 17, air heater 18, thermocouple 19, after reaching identical with the ore deposit parameter and stable, certain time（5 minutes）
Afterwards, each sensing data is gathered, the temperature field cloud atlas of goaf 12 is drawn using finite element difference method.For the utility model air
Goaf thermo parameters method figure when pressing 99.3kPa.
Wherein：4. obtain another 12 temperature field cloud atlas of atmospheric value 100.3kPa goafs again, weight after industrial computer is closed
It is new to start, directly initiate positive pressure fan 3, the aperture of manual adjustment damper 7, when barometer 30 is another setting atmospheric value
100.3kPa and it is stable when, the step of stopping the regulation of regulation wind window, repeating 3., obtains another temperature field cloud atlas of goaf 12.
For the utility model atmospheric pressure 100.3kPa when goaf thermo parameters method figure.
Sixth embodiment, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of spontaneous combustion in goaf for considering atmospheric pressure
The test method of model test platform, including by taking certain working face of colliery one as an example, feature is：1. open experimental box body top to open
Plate is opened, by 1:50 likelihoods ratio, the pit coal body 40 is carried out to experimental box body and goaf crushes coal petrography 50 and mated formation, while is being adopted
Each coordinate grid that dead zone 12 divides（600 millimeters of abscissa interval, 500 millimeters of ordinate interval, 80 grids is divided altogether）
Air velocity transducer 20, temperature sensor 21, gas sensor 22 are laid on node（Carbon monoxide transducer）, humidity sensor
23rd, data collecting card 100, simulation spontaneous combustion in goaf position are accessed after pressure sensor 27（2700 millimeters, 1250 millimeters）
It is distributed into thermocouple 19 and accesses PLC, cover experimental box body top opening board, starts industrial computer, pit coal inclination layer θ is set（10
Degree）, working face blast (inlet side machinery blast 0.66kPa, the kPa of return side machinery blast 0.79), work surface humidity（45%）、
Working face temperature（21 degree）, spontaneous fire point temperature（60 degree, i.e. electric thermo-couple temperature）Parameter, close the twice wind of testing gallery 31
Door, regulation wind window is opened, industrial computer sends instruction and passes through PLC（Programmable controller）Control hydraulic prop 60 makes seam inclination
θ is set as the ore deposit value（10 degree）, 2. start positive pressure fan 3, the aperture of manual adjustment damper 7, when barometer 30 is setting
Atmospheric value 99.3kPa and it is stable when, stop the regulation of regulation wind window, 3. by ore deposit parameter Boot Model ventilation blower 16, the air
Humidifier 17, air heater 18, thermocouple 19, after reaching identical with the ore deposit parameter and stable, certain time（5 minutes）
Afterwards, each sensing data is gathered, the temperature field cloud atlas of goaf 12 is drawn using finite element difference method.For the utility model air
Goaf thermo parameters method figure when pressing 99.3kPa.
Wherein：4. obtain another 12 temperature field cloud atlas of atmospheric value 100.3kPa goafs again, weight after industrial computer is closed
It is new to start, directly initiate positive pressure fan 3, the aperture of manual adjustment damper 7, when barometer 30 is another setting atmospheric value
100.3kPa and it is stable when, the step of stopping the regulation of regulation wind window, repeating 3., obtains another temperature field cloud atlas of goaf 12.
For the utility model atmospheric pressure 100.3kPa when goaf thermo parameters method figure.
Wherein：Next temperature field cloud atlas of goaf 12 can be obtained by repeating 4. step.
7th embodiment, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of spontaneous combustion in goaf for considering atmospheric pressure
The test method of model test platform, including by taking certain working face of colliery one as an example, feature is：1. open experimental box body top to open
Plate is opened, by 1:50 likelihoods ratio, the pit coal body 40 is carried out to experimental box body and goaf crushes coal petrography 50 and mated formation, while is being adopted
Each coordinate grid that dead zone 12 divides（600 millimeters of abscissa interval, 500 millimeters of ordinate interval, 80 grids is divided altogether）
Air velocity transducer 20, temperature sensor 21, gas sensor 22 are laid on node（Carbon monoxide transducer）, humidity sensor
23rd, data collecting card 100, simulation spontaneous combustion in goaf position are accessed after pressure sensor 27（2700 millimeters, 1250 millimeters）
It is distributed into thermocouple 19 and accesses PLC, cover experimental box body top opening board, starts industrial computer, pit coal inclination layer θ is set（10
Degree）, working face blast (inlet side machinery blast 0.66kPa, the kPa of return side machinery blast 0.79), work surface humidity（45%）、
Working face temperature（21 degree）, spontaneous fire point temperature（60 degree, i.e. electric thermo-couple temperature）Parameter, close the twice wind of testing gallery 31
Door, regulation wind window is opened, industrial computer sends instruction and passes through PLC（Programmable controller）Control hydraulic prop 60 makes seam inclination
θ is set as the ore deposit value（10 degree）, 2. start positive pressure fan 3, the aperture of manual adjustment damper 7, when barometer 30 is setting
Atmospheric value 99.3kPa and it is stable when, stop the regulation of regulation wind window, 3. by ore deposit parameter Boot Model ventilation blower 16, the air
Humidifier 17, air heater 18, thermocouple 19, after reaching identical with the ore deposit parameter and stable, certain time（5 minutes）
Afterwards, each sensing data is gathered, the temperature field cloud atlas of goaf 12 is drawn using finite element difference method.For the utility model air
Goaf thermo parameters method figure when pressing 99.3kPa.
Wherein：4. obtain another 12 temperature field cloud atlas of atmospheric value 100.3kPa goafs again, weight after industrial computer is closed
It is new to start, directly initiate positive pressure fan 3, the aperture of manual adjustment damper 7, when barometer 30 is another setting atmospheric value
100.3kPa and it is stable when, the step of stopping the regulation of regulation wind window, repeating 3., obtains another temperature field cloud atlas of goaf 12.
For the utility model atmospheric pressure 100.3kPa when goaf thermo parameters method figure.
Wherein：Next temperature field cloud atlas of goaf 12 can be obtained by repeating 4. step.
8th embodiment, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of spontaneous combustion in goaf for considering atmospheric pressure
The test method of model test platform, including by taking certain working face of colliery one as an example, feature is：1. open experimental box body top to open
Plate is opened, by 1:50 likelihoods ratio, the pit coal body 40 is carried out to experimental box body and goaf crushes coal petrography 50 and mated formation, while is being adopted
Each coordinate grid that dead zone 12 divides（600 millimeters of abscissa interval, 500 millimeters of ordinate interval, 80 grids is divided altogether）
Air velocity transducer 20, temperature sensor 21, gas sensor 22 are laid on node（Carbon monoxide transducer）, humidity sensor
23rd, data collecting card 100, simulation spontaneous combustion in goaf position are accessed after pressure sensor 27（2700 millimeters, 1250 millimeters）
It is distributed into thermocouple 19 and accesses PLC, cover experimental box body top opening board, starts industrial computer, pit coal inclination layer θ is set（10
Degree）, working face blast (inlet side machinery blast 0.66kPa, the kPa of return side machinery blast 0.79), work surface humidity（45%）、
Working face temperature（21 degree）, spontaneous fire point temperature（60 degree, i.e. electric thermo-couple temperature）Parameter, close the twice wind of testing gallery 31
Door, regulation wind window is opened, industrial computer sends instruction and passes through PLC（Programmable controller）Control hydraulic prop 60 makes seam inclination
θ is set as the ore deposit value（10 degree）, 2. start positive pressure fan 3, the aperture of manual adjustment damper 7, when barometer 30 is setting
Atmospheric value 99.3kPa and it is stable when, stop the regulation of regulation wind window, 3. by ore deposit parameter Boot Model ventilation blower 16, the air
Humidifier 17, air heater 18, thermocouple 19, after reaching identical with the ore deposit parameter and stable, certain time（5 minutes）
Afterwards, each sensing data is gathered, the temperature field cloud atlas of goaf 12 is drawn using finite element difference method.For the utility model air
Goaf thermo parameters method figure when pressing 99.3kPa.
Wherein：4. obtain another 12 temperature field cloud atlas of atmospheric value 100.3kPa goafs again, weight after industrial computer is closed
It is new to start, directly initiate positive pressure fan 3, the aperture of manual adjustment damper 7, when barometer 30 is another setting atmospheric value
100.3kPa and it is stable when, the step of stopping the regulation of regulation wind window, repeating 3., obtains another temperature field cloud atlas of goaf 12.
For the utility model atmospheric pressure 100.3kPa when goaf thermo parameters method figure.
Wherein：Next temperature field cloud atlas of goaf 12 can be obtained by repeating 4. step.
Wherein：Can also finite element difference method be used to obtain carbon monoxide gas concentration distribution map.When gas sensor 22
Finite element difference method is used to obtain oxygen demand distribution map using during oxygen sensor.
Claims (3)
1. a kind of spontaneous combustion in goaf model test platform for considering atmospheric pressure, including control system and model system, feature
It is：Control system is electrically connected PLC, data collecting card by industrial computer, PLC be electrically connected thermocouple, model ventilation blower,
Positive pressure fan, air humidifier, hydraulic prop, air heater, data collecting card is electrically connected barometer, some wind speed pass
If sensor, dry temperature sensor, some gas sensors, some humidity sensors, some pressure sensors, model system is by trying
Test the facility that tunnel side is provided with experiment chamber to form, the facility in testing gallery includes one end second air door and regulation wind
Window is blocked, and the other end is blocked with first of air door, and first of air door is provided with the positive pressure wind pipe for connecting positive pressure fan, tests chamber
Interior facility includes bottom support bracket side and is hinged experimental box body model, and opposite side is provided with the hydraulic prop of fixed pulley by two tops
Withstand, be additionally provided with barometer, experimental box body model includes intake entrance and is provided with air humidifier, air heater, work
Pressure sensor is set at face, return aircourse end sets model ventilation blower, and working face coal mining direction is provided with coal body, sets and adopt in goaf
Dead zone crushes coal petrography, if while at the coordinate grid of goaf set dry temperature sensor, gas sensor, air velocity transducer,
Humidity sensor, the actual position in proportion in simulation mine set thermocouple.
2. a kind of spontaneous combustion in goaf model test platform for considering atmospheric pressure according to claim 1, is characterised by：
θ is simulation mine seam inclination, degree, a pressure sensor is set again in return aircourse and working face junction.
3. a kind of spontaneous combustion in goaf model test platform for considering atmospheric pressure according to claim 1 or 2, feature exist
In：Experimental box body top sets be hinged opening board, and bottom sets be hinged stripper.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247127A (en) * | 2017-06-29 | 2017-10-13 | 煤科集团沈阳研究院有限公司 | Consider the spontaneous combustion in goaf model test platform and test method of atmospheric pressure |
| CN109060867A (en) * | 2018-08-15 | 2018-12-21 | 辽宁工程技术大学 | Study deep-well causes calamity source to act on lower spontaneous combustion of remaining coal characteristic multifunction emulation experimental bench more |
| CN113030372A (en) * | 2021-03-24 | 2021-06-25 | 西安科技大学 | Drought area environment simulation coal natural ignition test device and method |
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2017
- 2017-06-29 CN CN201720775897.4U patent/CN207020169U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247127A (en) * | 2017-06-29 | 2017-10-13 | 煤科集团沈阳研究院有限公司 | Consider the spontaneous combustion in goaf model test platform and test method of atmospheric pressure |
| CN109060867A (en) * | 2018-08-15 | 2018-12-21 | 辽宁工程技术大学 | Study deep-well causes calamity source to act on lower spontaneous combustion of remaining coal characteristic multifunction emulation experimental bench more |
| CN109060867B (en) * | 2018-08-15 | 2020-10-09 | 辽宁工程技术大学 | Multifunctional simulation experiment table for researching spontaneous combustion characteristics of residual coal under action of multiple disaster sources of deep well |
| CN113030372A (en) * | 2021-03-24 | 2021-06-25 | 西安科技大学 | Drought area environment simulation coal natural ignition test device and method |
| CN113030372B (en) * | 2021-03-24 | 2024-04-12 | 西安科技大学 | Device and method for testing natural ignition of simulated coal in arid region environment |
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