CN104880543B - Underground coal mine CO source mechanism and disappearance study mechanism are experimentally - Google Patents
Underground coal mine CO source mechanism and disappearance study mechanism are experimentally Download PDFInfo
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- CN104880543B CN104880543B CN201510332744.8A CN201510332744A CN104880543B CN 104880543 B CN104880543 B CN 104880543B CN 201510332744 A CN201510332744 A CN 201510332744A CN 104880543 B CN104880543 B CN 104880543B
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Abstract
The invention discloses a kind of underground coal mine CO source mechanism and disappearance study mechanism experimentally, the experimental provision that the method uses includes seal box, cutting tool is placed in seal box, disintegrating machine is had in seal box, crushing chamber is set on disintegrating machine, heater is set on crushing chamber, seal box arranges exhaustor, takes trachea and two air inlet pipe.This experimental provision provides to fill for research underground coal mine CO source and disappearance mechanism wants experimental situation；Research underground coal mine CO source mechanism experiment method is: by processing coal sample reduction under anoxybiotic environment, under the conditions of uniform temperature, the concentration of CO gas in the gas that detection is discharged by crushing chamber, its experimental technique is easy；Research underground coal mine CO disappearance mechanism experiment method is: by processing coal sample reduction under anoxybiotic environment, after crushing chamber is carried out inflated with nitrogen process, then heat coal sample, and then detects the concentration of CO gas in the gas discharged by crushing chamber.Its experimental technique is easy.
Description
Technical field
The invention belongs to underground coal mine CO source mechanism and disappearance study mechanism technical field, specifically relate to
And one underground coal mine CO source mechanism and disappearance study mechanism are experimentally.
Background technology
Can produce substantial amounts of toxic and harmful during the spontaneous combustion of remaining coal of coal mine gob, CO gas problem is the most
Prominent.In order to control the goaf condition of a fire timely and effectively, can close work surface if desired, minimizing is leaked out,
And related syndrome fire suppression measures is taked in ignition region, to reach the purpose of fire extinguishing.Now, goaf
It is the formation of a space the most airtight.Practice have shown that, goaf CO gas in fire extinguishing procedure
Can rapidly disappear, and the most indefinite to its disappearance mechanism, scholars have two kinds of viewpoints: one be by
Distinguished and admirable dilute CO gas in leaking out, and take it out of goaf from return；Two is in goaf
CO lost coal absorption, thus can't detect.
It addition, for the research in goaf CO source, relevant scholar holds a different view.Have thinks
In coalification course, raw coal is composed and has CO gas；Somebody then thinks, when raw coal is disclosed for,
With air contact, oxidation generates CO.How to study underground coal mine CO source, and goaf CO
Disappearance mechanism, is various equivalent modifications technical problem urgently to be resolved hurrily.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency of the prior art, it is provided that a kind of underground coal mine CO
Source mechanism and disappearance study mechanism experimental provision.This experimental provision in use can be effectively real
Existing anoxybiotic environment, and can also be able to realize coal sample effectively realizing coal sample is crushed simultaneously
Heat, thus provide for research underground coal mine CO source mechanism and disappearance mechanism necessary with sufficiently
Experimental situation, its simple in construction, experiment effectiveness is high.
For achieving the above object, underground coal mine CO of the present invention source mechanism and disappearance study mechanism are real
Experiment device the technical scheme is that underground coal mine CO source mechanism and the experiment of disappearance study mechanism
Device, it is characterised in that: including seal box, described seal box is by the casing of one end open and is used for sealing
The sealed platform cover closing described opening is constituted, and described seal box offers two handle holes, described operation
It is sealedly connected with glove on hole, is placed with in described seal box for having on described glove for operator
The cutting tool cut away by coal sample surface coal body, is provided with in described seal box for removing surface coal
The coal sample of body carries out the disintegrating machine of break process, described disintegrating machine is provided with for holding the broken of coal sample
Broken room, described crushing chamber is provided with for heating it and then making coal sample intensification add hot charging
Put, described seal box is provided with the first air inlet pipe for nitrogen leads to seal box, is used for CO
Gas and the mixed gas of nitrogen or nitrogen lead to the second air inlet pipe of described crushing chamber, for by institute
State the gas in seal box and be discharged to the exhaustor outside seal box and for by the gas in described crushing chamber
Body be discharged to outside seal box for detection CO gas concentration take trachea.
Above-mentioned underground coal mine CO source mechanism and disappearance study mechanism experimental provision, its feature exists
In: described disintegrating machine includes the base being arranged in casing and the motor being arranged on described base, institute
State crushing chamber to be arranged in the casing of described motor, the output shaft of described motor stretch into described crushing chamber and
Broken blade is installed at the position stretching into described crushing chamber, described crushing chamber is provided with crushing chamber close
Capping.
Above-mentioned underground coal mine CO source mechanism and disappearance study mechanism experimental provision, its feature exists
In: including the temperature sensor for measuring coal sample temperature, described crushing chamber seals to cover and is provided with confession
The jack that described temperature sensor is inserted.
Above-mentioned underground coal mine CO source mechanism and disappearance study mechanism experimental provision, its feature exists
In: described heater uses and is wrapped in the electrical heating wire on described crushing chamber outer wall.
Above-mentioned underground coal mine CO source mechanism and disappearance study mechanism experimental provision, its feature exists
In: described electrical heating wire includes nichrome alloy belt and is wrapped in the insulation outside described nichrome alloy belt
Body, described insulator is made up of multilamellar alkali-free glass fibre.
Above-mentioned underground coal mine CO source mechanism and disappearance study mechanism experimental provision, its feature exists
In: described casing is transparent configuration.
Above-mentioned underground coal mine CO source mechanism and disappearance study mechanism experimental provision, its feature exists
In: described casing and described sealed platform cover Flange joint.
The invention also discloses a kind of experimental technique studying underground coal mine CO source mechanism, this experiment
Method by carrying out break process, and then Analysis for CO at different temperatures to the identical coal sample in same colliery
Gas concentration changes, and then research is for identical coal sample in a certain specific colliery, its CO gas
Concentration is to be produced by departing from coal body adsorbed state, or is produced by chemical bond rupture.This experiment
Method, easy and simple to handle, it is possible to effectively completely cutting off the interference of extraneous factor, experimental result is accurately and reliably.
For achieving the above object, the present invention studies the experimental technique employing of underground coal mine CO source mechanism
Technical scheme be: a kind of study underground coal mine CO source mechanism experimental technique, it is characterised in that:
By utilizing above-mentioned experimental provision that coal sample is tested under the conditions of temperature T, temperature T pair
Answering a coal sample gradually to test multiple identical coal samples, described temperature T is with the increase of experiment number
And be gradually incremented by, the experimental technique of the most each coal sample comprises the following steps:
Step one, coal sample to be measured is loaded in seal box, then sealed platform cover is sealingly mounted at casing
On；
Step 2, in seal box, it is filled with nitrogen by the first air inlet pipe, and will be sealed by exhaustor
Air emptying in case；
Step 3, operator stretch in seal box after putting on the glove being connected on handle hole, and make
With cutting tool, the coal body on described coal sample surface is cut away；
Step 4, the coal sample that surface coal body cuts away is put into crushing chamber, and by the second air inlet pipe to
Being continually fed into nitrogen in crushing chamber, the air in crushing chamber is by taking trachea emptying；
Crushing chamber is heated so that coal sample is warming up to temperature T by step 5, startup heater；
Step 6, startup disintegrating machine carry out break process to the coal sample in crushing chamber；
Step 7, collection take trachea expellant gas, and detect the CO gas in the described gas of discharge
Bulk concentration C；
After using above-mentioned steps one to step 7 that multiple identical coal samples are tested, with temperature T as horizontal stroke
Coordinate, with CO gas concentration C as vertical coordinate, draws CO gas concentration C bent with the change of temperature T
Line, if having peak value to occur on described change curve, then illustrates to comprise by taking off in the CO gas produced
The CO gas produced from coal body adsorbed state；If straightway or flat occurs on described change curve
Sliding curved section, then illustrate to comprise, in the CO gas produced, the CO gas produced by chemical bond rupture.
The invention also discloses a kind of experimental technique studying underground coal mine CO disappearance mechanism, this experiment
Method by analyzing the CO gas concentration of discharge at different temperatures to the identical coal sample in same colliery
Change, and then detection coal body is to CO gas sorption ability, and then research is in a certain specific colliery
For identical coal sample, whether its CO gas disappears is because the reason of absorption.This experimental technique, behaviour
Make simplicity, it is possible to effectively completely cutting off the interference of extraneous factor, experimental result is accurately and reliably.
For achieving the above object, the present invention studies the experimental technique employing of underground coal mine CO disappearance mechanism
Technical scheme be: the research method of a kind of underground coal mine CO disappearance mechanism, it is characterised in that logical
Crossing and utilize above-mentioned experimental provision to test coal sample under the conditions of temperature T, temperature T is corresponding
Multiple identical coal samples are gradually tested by one coal sample, described temperature T with experiment number increase and
Gradually being incremented by, the experimental technique of the most each coal sample comprises the following steps:
Step one, coal sample to be measured is loaded in seal box, then sealed platform cover is sealingly mounted at casing
On；
Step 2, in seal box, it is filled with nitrogen by the first air inlet pipe, by exhaustor by seal box
Interior air emptying；
Step 3, operator stretch in seal box after putting on the glove being connected on handle hole, use
Coal sample surface coal body is cut away by cutting tool；
Step 4, the coal sample that surface coal body cuts away is put into crushing chamber, and start disintegrating machine to broken
Indoor coal sample carries out break process；
Step 5, in crushing chamber, it is passed through nitrogen by the second air inlet pipe, crushes by taking trachea emptying
Indoor air；
Crushing chamber is heated so that coal sample is warming up to temperature T by step 6, startup heater；
Step 7, in crushing chamber, it is passed through nitrogen and the mixed gas of CO gas by the second air inlet pipe；
Step 8, collection take trachea expellant gas, and detect the CO gas in the described gas of discharge
Bulk concentration C；
After using above-mentioned steps one to step 8 that multiple coal samples are tested, according to the CO recorded
The change in value of gas concentration C observes the ability of coal body CO absorption gas, i.e. CO gas concentration C
The ability of change in value big explanation coal body CO absorption gas strong, the change in value of CO gas concentration C
The ability of little explanation coal body CO absorption gas is weak, and the numerical value of CO gas concentration C is unchanged, and coal is described
Body to CO gas without absorption, thus judge underground coal mine CO disappear whether be owing to coal body is to CO gas
Body and disappear.
The present invention compared with prior art has the advantage that
1, the simple in construction of experimental provision of the present invention, novel in design reasonable.
2, experimental provision of the present invention realizes anoxybiotic environment by seal box and by the way of being filled with nitrogen,
By being provided with the break process that coal sample is realized under anoxybiotic environment by the disintegrating machine of crushing chamber, and by adding
Thermal carries out heat treated to coal sample, thus effectively meets research underground coal mine CO source machine
Prerequisite experimental situation when reason and the experiment of disappearance mechanism, its simple in construction, it is simple to operate.
3, crusher structure of the present invention is simple, it is possible to effectively realize the break process to coal body,
Easy to operate.
4, casing of the present invention is transparent configuration.Concrete, described casing is made up of lucite.
Operator so can be facilitated to observe, such as have gloves on coal sample is cut time, can
With facilitate observation effectively to cut, when coal sample is put into crushing chamber, it is also possible to conveniently observe into
Row fast operating.
5, the experimental technique of research underground coal mine CO of the present invention source mechanism, it is by anoxybiotic
Carry out break process under environment and under the conditions of uniform temperature to coal sample, and then detection is released by crushing chamber
The concentration of CO gas in the gas released, by testing to observe CO gas to different coal samples
The change of concentration, and then research underground coal mine CO is to be produced by departing from coal body adsorbed state, also
Being produced by chemical bond rupture, its experimental technique is easy, simple to operate.
6, the experimental technique of research underground coal mine CO disappearance mechanism of the present invention, it is by anoxybiotic
Under environment, coal sample is carried out break process, after subsequently crushing chamber being carried out inflated with nitrogen process, then to coal sample
Heating, and then detect the concentration of CO gas in the gas discharged by crushing chamber, by difference
Coal sample carries out the change testing to observe the concentration of CO gas, and then can be derived that coal sample is to CO gas
Absorbability, and then whether the disappearance of research underground coal mine CO be because of the coal sample absorption to CO gas
Causing, its experimental technique is easy, simple to operate.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of experimental provision of the present invention.
Fig. 2 is the structural representation of disintegrating machine of the present invention.
Fig. 3 is the cross-sectional structure schematic diagram of electrical heating wire of the present invention.
Fig. 4 be the present invention study underground coal mine CO source mechanism experimental technique in each coal sample is tested
Time method flow diagram.
It is real to each coal sample that Fig. 5 is that the present invention studies in the experimental technique of underground coal mine CO disappearance mechanism
Method flow diagram when testing.
Description of reference numerals:
1 seal box；1-1 casing；1-2 sealed platform cover；
2 handle holes；3 glove；4 first air inlet pipe；
5 take trachea；6 second air inlet pipe；7 exhaustors；
8 crushing chambers；9 bases；10 motors；
11 crush blade；12 electrical heating wires；12-1 nichrome alloy belt；
12-2 insulator；13 crushing chambers seal lid；14 jacks；
15 air inlet pipe joints；16 take gas-tpe fitting.
Detailed description of the invention
A kind of underground coal mine CO source mechanism as shown in Figure 1 and disappearance study mechanism experimental provision,
Including seal box 1, described seal box 1 is by the casing 1-1 of one end open and is used for closing described opening
Sealed platform cover 1-2 constitute, described seal box 1 offers two handle holes 2, described handle hole
It is sealedly connected with glove 3 on 2, is placed with for having on for operator described in described seal box 1
The cutting tool that coal sample surface coal body is cut away by glove 3, is provided with for going in described seal box 1
The coal sample falling surface coal body carries out the disintegrating machine of break process, and described disintegrating machine is provided with for holding
The crushing chamber 8 of coal sample, described crushing chamber 8 is provided with for heating it and then making coal sample liter
The heater of temperature, described seal box 1 is provided with and first enters for what nitrogen led to seal box 1
Trachea 4, for CO gas and the mixed gas of nitrogen or nitrogen being led to the of described crushing chamber 8
Two air inlet pipe 6, for the gas in described seal box 1 is discharged to the exhaustor 7 outside seal box 1
Outside for detection CO gas concentration with for the gas in described crushing chamber 8 being discharged to seal box 1
Take trachea 5.
In the present embodiment, this experimental provision can effectively realize anoxybiotic environment in use, and can
To effectively realizing coal sample is crushed, the heating to coal sample can also be realized simultaneously, thus be Study on Coal
Under mine, CO source mechanism and disappearance mechanism provide necessary and sufficient experimental situation, its structure letter
Single, experiment effectiveness is high.
In the present embodiment, described first air inlet pipe the 4, second air inlet pipe 6, exhaustor 7 and take trachea 5
On the most threaded have block.Described cutting tool uses minitype cutting machine.Rubber selected by described glove 3
Rubber gloves.
As in figure 2 it is shown, described disintegrating machine includes the base 9 being arranged in casing 1-1 and is arranged on institute
Stating the motor 10 on base 9, described crushing chamber 8 is arranged in the casing of described motor 10, described
The output shaft of motor 10 stretches into described crushing chamber 8 and is provided with at the position stretching into described crushing chamber 8
Broken blade 11, described crushing chamber 8 is provided with crushing chamber and seals lid 13.
In the present embodiment, described crusher structure is simple, it is possible to effectively realize the broken place to coal body
Reason, easy to operate.Described crushing chamber seal lid 13 on be provided with for the first air inlet pipe
The 4 air inlet pipe joints 15 connected and for take that trachea 5 is connected take gas-tpe fitting 16.
As in figure 2 it is shown, this underground coal mine CO source mechanism and disappearance study mechanism experimental provision bag
Including the temperature sensor for measuring coal sample temperature, described crushing chamber seals and is provided with for institute on lid 13
State the jack 14 that temperature sensor is inserted.By arranging temperature sensor, can effectively detect and produce coal
The actual temp of sample, so can with under the cooperation of temperature controller, and then control heater 12
Work or stopping.
In the present embodiment, described heater uses and is wrapped in the electrical heating on described crushing chamber 8 outer wall
Silk 12.As it is shown on figure 3, concrete, described electrical heating wire 12 includes nichrome alloy belt 12-1 and bag
Be rolled in the insulator 12-2 outside described nichrome alloy belt 12-1, described insulator 12-2 by multilamellar without
Alkali containing glass fibre is made.Wherein, it is fast that described nichrome alloy belt 12-1 has heating, and the thermal efficiency is high,
Service life the feature such as length, the insulator 12-2 being made up of multilamellar alkali-free glass fibre, have good
Resistance to elevated temperatures and reliable insulating properties.Its structurally flexible, heats is good, can be direct during use
The outer surface being wrapped in described crushing chamber 8 easily heats.
In the present embodiment, described casing 1-1 is transparent configuration.Concrete, described casing 1-1 is by having
Machine glass is made.Operator so can be facilitated to observe, such as in the 3 pairs of coal samples that have gloves on
When cutting, can conveniently observe effectively to cut, when coal sample is put into crushing chamber 8,
Observation can also be facilitated to carry out fast operating.
In the present embodiment, described casing 1-1 and described sealed platform cover 1-2 Flange joint.So can
Realize quickly being opened or closed by described seal box 1.
A kind of experimental technique studying underground coal mine CO source mechanism as shown in Figure 4, by temperature
Utilize described experimental provision that coal sample is tested under the conditions of degree T, a corresponding coal of temperature T
Multiple identical coal samples are gradually tested by sample, and described temperature T is gradually passed with the increase of experiment number
Increasing, the experimental technique of the most each coal sample comprises the following steps:
Step one, coal sample to be measured is loaded in seal box 1, then sealed platform cover 1-2 is sealed and install
On casing 1-1.
Step 2, in seal box 1, it is filled with nitrogen by the first air inlet pipe 4, and by exhaustor 7
By the air emptying in seal box 1；Its effect is by being filled with nitrogen, Jin Erpai in seal box 1
Walk the gas in seal box 1, and then be in nitrogen environment in making seal box 1, it is achieved seal box 1
Anoxybiotic.
Step 3, operator stretch in seal box 1 after putting on the glove 3 being connected on handle hole 2,
And use cutting tool to be cut away by the coal body on described coal sample surface；The step for purpose be by by coal
The coal body on sample surface cuts away, it is to avoid experimental result is caused shadow by the oxygen that the coal body on coal sample surface carries
Ring, it is achieved comprehensively anoxic condition.
Step 4, the coal sample that surface coal body cuts away is put into crushing chamber 8, and by the second air inlet pipe
6 are continually fed into nitrogen in crushing chamber 8, and the air in crushing chamber 8 is by taking trachea 5 emptying；This
Time can stop in seal box 1, being filled with nitrogen by the first air inlet pipe 4.In the step for of, pass through
It is passed through nitrogen, it can be ensured that crushing chamber 8 is in anoxybiotic environment in crushing chamber 8.
Crushing chamber 8 is heated so that coal sample is warming up to temperature T by step 5, startup heater.
Step 6, startup disintegrating machine carry out break process to the coal sample in crushing chamber 8；By to coal sample
Carry out effective break process, make coal body Middle molecule active function groups rupture under anoxic condition.
Step 7, collection take trachea 5 expellant gas, and detect the CO in the described gas of discharge
Gas concentration C；Concrete, by chromatographic gas componant, and record the dense of CO gas
Degree C.
After using above-mentioned steps one to step 7 that multiple identical coal samples are tested, with temperature T as horizontal stroke
Coordinate, with CO gas concentration C as vertical coordinate, draws CO gas concentration C bent with the change of temperature T
Line, if having peak value to occur on described change curve, then illustrates to comprise by taking off in the CO gas produced
The CO gas produced from coal body adsorbed state；If straightway or flat occurs on described change curve
Sliding curved section, then illustrate to comprise, in the CO gas produced, the CO gas produced by chemical bond rupture.
In the present embodiment, described coal sample is to take from coal sample identical in identical colliery, identical coal seam.This
In embodiment, choosing seven coal samples and test, temperature T during experiment is 30 DEG C for the first time, described
Temperature T is gradually incremented by 1 DEG C with experiment number, and i.e. temperature T during second time experiment is 31 DEG C, and the 3rd
Temperature T during secondary experiment is 32 DEG C, and temperature T during the 4th experiment is 33 DEG C, the 5th experiment
Time temperature T be 34 DEG C, the 6th time experiment time temperature T be 35 DEG C, the 7th time experiment time temperature
Degree T is 36 DEG C.
Owing to underground coal mine CO gas mainly has three sources, be an off coal body adsorbed state respectively and
Produce；Chemical bond rupture and produce；Coal body aoxidizes and produces, and the present embodiment is only probed at underground coal mine
CO gas is by departing from the generation of coal body adsorbed state or chemical bond rupture generation.The present embodiment root
According to " when CO gas concentration C is smoothed curve with the change curve of temperature T or straight line then represents CO gas
Body is to be produced by chemical bond rupture, when CO gas concentration C is non-smooth with the change curve of temperature T
Curve then represents that CO gas is to produce by departing from coal body absorption " this principle of experience judges.
In the present embodiment, the experimental technique of this research underground coal mine CO source mechanism, by same
The identical coal sample in colliery carries out break process, and then the change of Analysis for CO gas concentration at different temperatures,
And then research is for identical coal sample in a certain specific colliery, its CO gas concentration is by departing from coal
Body adsorbed state and produce, or produced by chemical bond rupture.This experimental technique, easy and simple to handle,
Can effectively completely cut off the interference of extraneous factor, experimental result is accurately and reliably.
The research method of a kind of underground coal mine CO disappearance mechanism as shown in Figure 5, by temperature T
Under the conditions of utilize described experimental provision that coal sample is tested, the corresponding coal sample of temperature T by
Secondary testing multiple identical coal samples, described temperature T is gradually incremented by with the increase of experiment number,
The experimental technique of the most each coal sample comprises the following steps:
Step one, coal sample to be measured is loaded in seal box 1, then sealed platform cover 1-2 is sealed and install
On casing 1-1.
Step 2, in seal box 1, it is filled with nitrogen by the first air inlet pipe 4, will by exhaustor 7
Air emptying in seal box 1；Its effect is by being filled with nitrogen in seal box 1, and then drains
Gas in seal box 1, and then be in nitrogen environment in making seal box 1, it is achieved seal box 1 exhausted
Oxygen.
Step 3, operator stretch into after putting on the glove being connected on handle hole 2 in seal box 1,
Cutting tool is used to be cut away by coal sample surface coal body；The step for purpose by by coal sample surface
Coal body cuts away, it is to avoid experimental result is impacted by the oxygen that the coal body on coal sample surface carries, it is achieved complete
The anoxic condition in face.
Step 4, the coal sample that surface coal body cuts away is put into crushing chamber 8, and start disintegrating machine to broken
Coal sample in broken room 8 carries out break process；By coal sample is carried out break process so that coal sample is abundant
Broken, increase can the surface area of coal sample, and then improve the contact area of coal body and gas.
Step 5, in crushing chamber 8, it is passed through nitrogen by the second air inlet pipe 6, by taking trachea 5 row
Air in clean crushing chamber 8；Now, by being passed through nitrogen in crushing chamber 8, can effectively arrange
Go out the gas being made coal body evaporate by crushing, it is ensured that be full of by nitrogen in crushing chamber 8, and then keep away
Exempt from the impact on experimental result of other gas.
Crushing chamber 8 is heated so that coal sample is warming up to temperature T by step 6, startup heater；
Step 7, in crushing chamber 8, it is passed through nitrogen and the mixing of CO gas by the second air inlet pipe 6
Gas；By under the conditions of described temperature T, it is passed through nitrogen and the mixed gas of CO gas, thus
Test the coal body absorbability to CO gas at a certain temperature.
Step 8, collection take trachea 5 expellant gas, and detect the CO in the described gas of discharge
Gas concentration C；Concrete, by chromatographic gas componant, and record by taking trachea 5
The concentration of CO gas in expellant gas, owing to, in above-mentioned steps seven, the CO gas concentration being passed through is
Known, and then the concentration of the CO gas that the coal sample absorption being broken is walked can be calculated.
After using above-mentioned steps one to step 8 that multiple coal samples are tested, according to the CO recorded
The change in value of gas concentration C observes the ability of coal body CO absorption gas, i.e. CO gas concentration C
The ability of change in value big explanation coal body CO absorption gas strong, the change in value of CO gas concentration C
The ability of little explanation coal body CO absorption gas is weak, and the numerical value of CO gas concentration C is unchanged, and coal is described
Body to CO gas without absorption, thus judge underground coal mine CO disappear whether be owing to coal body is to CO gas
Body and disappear.
In the present embodiment, described coal sample is to take from coal sample identical in identical colliery, identical coal seam.This
In embodiment, choosing seven coal samples and test, temperature T during experiment is 30 DEG C for the first time, described
Temperature T is gradually incremented by 1 DEG C with experiment number, and i.e. temperature T during second time experiment is 31 DEG C, and the 3rd
Temperature T during secondary experiment is 32 DEG C, and temperature T during the 4th experiment is 33 DEG C, the 5th experiment
Time temperature T be 34 DEG C, the 6th time experiment time temperature T be 35 DEG C, the 7th time experiment time temperature
Degree T is 36 DEG C.
In the present embodiment, the experimental technique of this research underground coal mine CO disappearance mechanism, by same
The identical coal sample in colliery analyzes the CO gas concentration change of discharge, and then detection at different temperatures
Coal body is to CO gas sorption ability, and then research is for identical coal sample in a certain specific colliery,
Whether its CO gas disappears is because the reason of absorption.This experimental technique, easy and simple to handle, it is possible to have
The interference of effect isolation extraneous factor, experimental result is accurately and reliably.
The above, be only presently preferred embodiments of the present invention, not impose any restrictions the present invention, all
It is any simple modification, change and equivalence above example made according to the technology of the present invention essence
Reconfiguration, all still falls within the protection domain of technical solution of the present invention.
Claims (7)
1. experimentally, the method uses for underground coal mine CO source mechanism and disappearance study mechanism
Experimental provision includes seal box (1), and described seal box (1) is by the casing (1-1) of one end open
With sealed platform cover (1-2) composition for closing described opening, described seal box offers on (1)
Two handle holes (2), described handle hole (2) is sealedly connected with glove (3), described sealing
It is placed with in case (1) for having on described glove (3) for operator coal sample surface coal body is cut away
Cutting tool, be provided with in described seal box (1) for the coal sample removing surface coal body is carried out
The disintegrating machine of break process, described disintegrating machine is provided with the crushing chamber (8) for holding coal sample,
Described crushing chamber is provided with the heater for heating it and then make coal sample heat up on (8),
Be provided with on described seal box (1) the first air inlet pipe (4) for nitrogen being led to seal box (1),
Enter for the mixed gas of CO gas and nitrogen or nitrogen being led to the second of described crushing chamber (8)
Trachea (6), for the gas in described seal box (1) being discharged to the row that seal box (1) is outside
Trachea (7) and for the gas in described crushing chamber (8) is discharged to seal box (1) outside for
That detects CO gas concentration takes trachea (5), it is characterised in that:
Underground coal mine CO originates study mechanism experimentally: by utilizing under the conditions of temperature T
Coal sample is tested by described experimental provision, and a corresponding coal sample of temperature T is gradually to multiple phases
Testing with coal sample, described temperature T is gradually incremented by with the increase of experiment number, the most each coal
The experimental technique of sample comprises the following steps:
Step one, coal sample to be measured is loaded in seal box (1), then by close for sealed platform cover (1-2)
Envelope is arranged on casing (1-1)；
Step 2, in seal box (1), it is filled with nitrogen by the first air inlet pipe (4), and by row
Trachea (7) is by the air emptying in seal box (1)；
Step 3, operator stretch into sealing after putting on the glove (3) being connected on handle hole (2)
In case (1), and cutting tool is used to be cut away by the coal body on described coal sample surface；
Step 4, the coal sample that surface coal body cuts away is put into crushing chamber (8), and enter by second
Trachea (6) is continually fed into nitrogen in crushing chamber (8), and the air in crushing chamber (8) is by taking
Trachea (5) emptying；
Crushing chamber (8) is heated so that coal sample is warming up to temperature T by step 5, startup heater；
Step 6, startup disintegrating machine carry out break process to the coal sample in crushing chamber (8)；
Step 7, collection take trachea (5) expellant gas, and detect in the described gas of discharge
CO gas concentration C；
After using above-mentioned steps one to step 7 that multiple identical coal samples are tested, with temperature T as horizontal stroke
Coordinate, with CO gas concentration C as vertical coordinate, draws CO gas concentration C bent with the change of temperature T
Line, if having peak value to occur on described change curve, then illustrates to comprise by taking off in the CO gas produced
The CO gas produced from coal body adsorbed state；If straightway or flat occurs on described change curve
Sliding curved section, then illustrate to comprise, in the CO gas produced, the CO gas produced by chemical bond rupture；
Underground coal mine CO disappearance study mechanism is experimentally: by utilizing under the conditions of temperature T
Coal sample is tested by described experimental provision, and a corresponding coal sample of temperature T is gradually to multiple phases
Testing with coal sample, described temperature T is gradually incremented by with the increase of experiment number, the most each coal
The experimental technique of sample comprises the following steps:
Step one, coal sample to be measured is loaded in seal box (1), then by close for sealed platform cover (1-2)
Envelope is arranged on casing (1-1)；
Step 2, in seal box (1), it is filled with nitrogen by the first air inlet pipe (4), passes through aerofluxus
Pipe (7) is by the air emptying in seal box (1)；
Step 3, operator stretch into seal box (1) after putting on the glove being connected on handle hole (2)
In, use cutting tool to be cut away by coal sample surface coal body；
Step 4, the coal sample that surface coal body cuts away is put into crushing chamber (8), and start disintegrating machine
Coal sample in crushing chamber (8) is carried out break process；
Step 5, in crushing chamber (8), it is passed through nitrogen by the second air inlet pipe (6), by taking gas
Air in pipe (5) emptying crushing chamber (8)；
Crushing chamber (8) is heated so that coal sample is warming up to temperature T by step 6, startup heater；
Step 7, in crushing chamber (8), it is passed through nitrogen and CO gas by the second air inlet pipe (6)
Mixed gas；
Step 8, collection take trachea (5) expellant gas, and detect in the described gas of discharge
CO gas concentration C；
After using above-mentioned steps one to step 8 that multiple coal samples are tested, according to the CO recorded
The change in value of gas concentration C observes the ability of coal body CO absorption gas, i.e. CO gas concentration C
The ability of change in value big explanation coal body CO absorption gas strong, the change in value of CO gas concentration C
The ability of little explanation coal body CO absorption gas is weak, and the numerical value of CO gas concentration C is unchanged, and coal is described
Body to CO gas without absorption, thus judge underground coal mine CO disappear whether be owing to coal body is to CO gas
Body and disappear.
Underground coal mine CO the most according to claim 1 source mechanism and disappearance study mechanism are real
Proved recipe method, it is characterised in that: described disintegrating machine includes the base (9) being arranged in casing (1-1)
With the motor (10) being arranged on described base (9), described crushing chamber (8) is arranged on described electricity
In the casing of machine (10), the output shaft of described motor (10) stretch into described crushing chamber (8) and
The position stretching into described crushing chamber (8) is provided with broken blade (11), on described crushing chamber (8)
It is provided with crushing chamber and seals lid (13).
Underground coal mine CO the most according to claim 2 source mechanism and disappearance study mechanism are real
Proved recipe method, it is characterised in that: include the temperature sensor for measuring coal sample temperature, described crushing chamber
Seal and on lid (13), be provided with the jack (14) inserted for described temperature sensor.
Underground coal mine CO the most according to claim 1 source mechanism and disappearance study mechanism are real
Proved recipe method, it is characterised in that: described heater uses and is wrapped on described crushing chamber (8) outer wall
Electrical heating wire (12).
Underground coal mine CO the most according to claim 4 source mechanism and disappearance study mechanism are real
Proved recipe method, it is characterised in that: described electrical heating wire (12) includes nichrome alloy belt (12-1) and bag
It is rolled in the insulator (12-2) in described nichrome alloy belt (12-1) outside, described insulator (12-2)
It is made up of multilamellar alkali-free glass fibre.
Underground coal mine CO the most according to claim 1 source mechanism and disappearance study mechanism are real
Proved recipe method, it is characterised in that: described casing (1-1) is transparent configuration.
Underground coal mine CO the most according to claim 1 source mechanism and disappearance study mechanism are real
Proved recipe method, it is characterised in that: described casing (1-1) and described sealed platform cover (1-2) Flange joint.
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