CN106812550A - A kind of fully-mechanized mining working crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion - Google Patents
A kind of fully-mechanized mining working crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion Download PDFInfo
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- CN106812550A CN106812550A CN201710081015.9A CN201710081015A CN106812550A CN 106812550 A CN106812550 A CN 106812550A CN 201710081015 A CN201710081015 A CN 201710081015A CN 106812550 A CN106812550 A CN 106812550A
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- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005065 mining Methods 0.000 title claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 74
- 230000002265 prevention Effects 0.000 claims abstract description 43
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 36
- 238000005553 drilling Methods 0.000 claims abstract description 35
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001301 oxygen Substances 0.000 claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000011049 filling Methods 0.000 claims abstract description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000008267 milk Substances 0.000 claims abstract description 9
- 210000004080 milk Anatomy 0.000 claims abstract description 9
- 235000013336 milk Nutrition 0.000 claims abstract description 9
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 238000004079 fireproofing Methods 0.000 claims abstract description 7
- 230000010412 perfusion Effects 0.000 claims abstract description 6
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000011440 grout Substances 0.000 claims description 17
- 230000008901 benefit Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 1
- 229910002091 carbon monoxide Inorganic materials 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 9
- 238000003325 tomography Methods 0.000 description 6
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 230000000630 rising effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion is crossed the invention discloses a kind of fully-mechanized mining working, can prevent and eliminate spontaneous fire, the related data timing to working face is detected；To goaf continuous nitrogen injection, goaf is in the milk and water filling, after related data is exceeded, grouting water filling is carried out to goaf first, then using transporting suitable note nitrogen pipe to goaf liquid carbon dioxide, the temperature and oxygen content in goaf are reduced, while controlling face upper corner angle CO to be no more than 10ppm, frame shelves CO is no more than 20ppm；Occurs hidden danger region to working face simultaneously, using fire prevention drilling to hidden danger regional perfusion fireproofing extinguishing materials, the oxygen in isolation ignition hidden danger region eliminates ignition hidden danger.The present invention is parallel using multiple methods, mutually support, CO overall stabilitys during Coal Face Passing Through Fault can be controlled, it is ensured that the safety coal extraction of working face, also for the fireproofing of other similar Coal Face Passing Through major faults provides invaluable experience.
Description
Technical field
Major fault is crossed the present invention relates to a kind of method of coal mine fire preventing and treating, more particularly to a kind of fully-mechanized mining working
The method for preventing and treating Period of Coal Seam Spontaneous Combustion.
Background technology
Mine fire is called mine fire or underground fire.Refer to occur in coal mine down-hole tunnel, working face, chamber, adopt
The fire in the places such as dead zone.Can involve and threaten the superficial fire of downhole safety, also be mine fire.The fire that mine occurs
(including jeopardizing the superficial fire of underground), often causes casualties, and equipment loss, mine stops production, the destruction Of resources, or even causes watt
This, coal dust or dust of sulfide ore blast.
Spontaneously inflammable coal adsorbs the oxygen in air at normal temperatures, and unstable oxide is generated on the surface.Coal is opened
Caloric value is few when beginning to aoxidize, and can distribute in time, and coal temperature does not increase, but chemism increases, and the ignition temperature of coal is in a slight decrease,
This stage is spontaneous combustion incubation period.Then, the oxidation rate of coal is accelerated, and unstable oxide successively resolves into water, CO2With
CO, the increase of exothermic oxidation amount, when heat can not be distributed fully, coal temperature gradually rises, and this stage is referred to as the self-heating phase.Coal Wen Ji
Height of continuing rising, more than critical-temperature (usually 80 DEG C or so), oxidation rate increases severely, and coal temperature rises suddenly, reaches ignition temperature and starts
Burning.Before critical-temperature is reached, if stopping or reducing oxygen supply, or improve radiating condition, then self-heating stage interruption, coal temperature is gradually
Decline, tend to cooling down weathered state.
Fire is one of colliery major casualty, has a strong impact on efficient, the safety in production in colliery.It is wherein again disconnected with Coal Face Passing Through
Layer is easiest to be under fire during particularly crossing drop more than 10m major faults.Fire during preventing coal mine work area to cross major fault, be
One of emphasis of coal-mine fire preventing and treating.And use and prevent and treat Period of Coal Seam Spontaneous Combustion technology, it is to prevent during coal-face crosses major fault
Control the effective means of Period of Coal Seam Spontaneous Combustion.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of fully-mechanized mining working crosses major fault preventing and treating coal
The method of layer spontaneous fire, can prevent and eliminate spontaneous fire, eliminate the hidden danger of spontaneous fire.
The present invention is achieved by the following technical solutions, and the present invention is comprised the following steps：
(1) the related data timing to working face is detected；
(2) to goaf continuous nitrogen injection：
After coal mining terminates, before working face fortune is along passing fault, note nitrogen pipe is pre-buried, to goaf continuous nitrogen injection, during noting nitrogen
Nitrogen gas concn in whole goaf is more than or equal to 97%；
(3) goaf is in the milk and water filling
Before working face rail is along passing fault, grout pipe is pre-buried and is in the milk to goaf, while cut intraocular in working face benefit setting
Put fire prevention drilling so that fire prevention drilling extends to the edge and middle part in Yi Mei areas, be in the milk and note to goaf using fire prevention drilling
Water；
(4) after related data is exceeded in step (1), grouting water filling is carried out to goaf first, it is then suitable using transporting
Note nitrogen pipe reduces the temperature and oxygen content in goaf to goaf liquid carbon dioxide, while controlling work face goaf
Below 30 DEG C, goaf oxygen concentration is below 10% for temperature everywhere；
(5) while occurring hidden danger region to working face, using fire prevention drilling to hidden danger regional perfusion fireproofing extinguishing materials, isolation
The oxygen in ignition hidden danger region, eliminates ignition hidden danger.
In the step (1), timing detection working face, return, the gas in goaf, temperature and humidity relevant parameter,
Simultaneously to after up and down corners, the frame of working face and frame shelves temperature be measured, while work face frame shelves at set up an office check an oxygen
Change carbon situation.The corresponding data of periodic monitor, it can be ensured that control is arranged in rational scope once going beyond the scope and can take
Apply and remove a hidden danger.
In the step (2) and step (3), carry out noting nitrogen and grouting using fire prevention pipeline, the fire prevention pipeline includes setting
Put working face fortune along in note nitrogen pipe, be arranged on working face rail along in multiple grout pipes, be arranged on working face benefit cut intraocular
Multiple be parallel to each other fire prevention drilling.
The outlet ends of the note nitrogen pipe are provided with multiple threeways, according to actual condition can note the regulation and control of nitrogen.
Switching gate valve is provided with the import of the note nitrogen pipe, is provided for connecting liquid carbon dioxide pipe on the note nitrogen pipe
The short circuit mouthful on road, the short circuit mouthful is located at the exit of switching gate valve.Can utilize and note the note that nitrogen pipe completes liquid carbon dioxide
Enter, simplify equipment.
The grout pipe is lifted on back, and perfusion in floral tube, grout pipe is installed on the grout outlet of the grout pipe
The Tu Shui ratios of slurries are 1:4~1：5.
One group of each two of fire prevention drilling, every group of spacing is identical, height and the height of back that the fire prevention drills
Degree is consistent, every group of two fire prevention drillings, a middle part for being located at Yi Mei areas, and another is located at the edge in Yi Mei areas.
It is described fire prevention drilling from the plane of disruption to borehole bottom location set steel pipe, it is described each fire prevention drilling aperture add for
The snap joint of grouting.
The present invention has advantages below compared to existing technology：The present invention is parallel using multiple methods, mutually support, can control
CO overall stabilitys during Coal Face Passing Through Fault processed, it is ensured that the safety coal extraction of working face, also for other similar working faces are excessive disconnected
The fireproofing of layer provides invaluable experience.
Brief description of the drawings
Fig. 1 is the layout of fire prevention pipeline of the invention；
Fig. 2 is the partial schematic diagram in A portions in Fig. 1；
Fig. 3 is the schematic layout pattern of fire prevention drilling；
Fig. 4 is the sectional view of I in Fig. 3；
Fig. 5 is the sectional view of II in Fig. 3；
Fig. 6 is the sectional view of III in Fig. 3；
Fig. 7 be Coal Face Passing Through Fault during CO variation diagrams.
Specific embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed implementation method and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
By the present embodiment apply the fully-mechanized mining workings of Gu Qiaokuang (South) 1211 (3) cross FS99 normal faults (∠ 60~
80 °, H=13.0m, 1211 (3) working faces are southern two exploiting fields 13-1 coal seams Shou Cai faces, and underground is located at southern two exploiting field top, coal seam
2~9 ° of inclination angle, average 5 °；13-1 Coal Spontaneous Combustion Periods are 3~6 months.1211 (3) working faces are predicted according to ore deposit geology department
Working face rail along moving back chi point 880m at, transport and suitable will disclose FS99 normal faults (60~80 ° of ∠, H=12.0 moving back chi point 1020m
~13.0m), fault throw 13m, tendency runs through whole working face, moves towards to influence 140m, wherein working face middle part i.e. 50 framves extremely
120 framves are nearly tendency, are almost disclosed simultaneously.Working face total rock on a large scale, big by difficulty, Period of Coal Seam Spontaneous Combustion hidden danger is big.
Ignition hidden danger is controlled especially by following steps：
(1) the related data timing to working face is detected：
Full-time survey gas person is installed per bottom class and checks working face, return, the CH in goaf4、CO2, CO, the parameter such as temperature, it is right
Having the place for losing coal after frame carries out emphasis inspection, sets up and checks machine account；There is survey gas person per bottom class to the upper and lower corner of working face simultaneously
After angle, frame and frame shelves temperature be measured once.Check working face whether there is " extension sweat ", high temperataure phenomena at any time, will when noting abnormalities
Report without delay, and take measures to be processed.Ensure that dead angle is not stayed in fire check；A fire prevention is inserted in the every 10 frame frame shelves of working face
Observation tube (observation tube insertion goaf is no less than 500mm), set up an office inspection CO situations.
(2) to goaf continuous nitrogen injection：
After coal mining terminates, away from 1211 (3) working faces fortune along 60m before passing fault (to meeting the tendency of along moving back chi point 950m) before, note nitrogen
Pipe is pre-buried, and to goaf continuous nitrogen injection, the nitrogen gas concn during note nitrogen in whole goaf is more than or equal to 97%.Such as Fig. 1 and
Shown in Fig. 2, carry out noting nitrogen and grouting using fire prevention pipeline, the fire prevention pipeline includes the note nitrogen being arranged in working face fortune suitable 1
Pipe 4, be arranged on working face rail along three grout pipes 5 in 2, be arranged on working face and mend multiple fire prevention drillings 6 for cutting in eye 3.
The way outlet of note nitrogen pipe 4 will keep unimpeded, add a threeway 41 again every 10m outward from the end of note nitrogen pipe 4, altogether
There are three threeways 41, terminate to note the m of nitrogen quantity 570,000 altogether to tomography from into tomography3。
Switching gate valve 42 is provided with the import of note nitrogen pipe 4, is provided for connecting liquid carbon dioxide pipe on the note nitrogen pipe 4
The short circuit mouthful 43 on road, the short circuit mouthful 43 is located at the exit of switching gate valve 42.Liquid titanium dioxide can be completed using nitrogen pipe 4 is noted
The injection of carbon, simplifies equipment.
(3) goaf is in the milk and water filling
The grouting of old man's pipe laying, water filling.70m, preceding 40m, preceding 20m (correspondences before away from 1211 (3) working face rails along 2 passing faults
Rail moves back chi point 880m, 910m, 930m along 2), respectively by three grout pipes 5 it is pre-buried and to goaf be in the milk, during grouting slurries soil
Water compares 1: 4~1: 5.The outlet of grout pipe 5 will keep unimpeded, the grout pipe 5 is lifted on back, and the grout pipe 5 goes out
Floral tube is installed on slurry mouth.
As illustrated in figures 3-6, Fig. 3 is the top view of the whole layout of fire prevention drilling 6, for the something lost coal that passing fault is likely to occur
Region, cuts 19 groups of the construction of eye 3 totally 38 fire prevention drilling 6 in benefit in advance, and fire prevention drilling 6 is arranged in parallel in the horizontal direction,
Each fire prevention 6 in the vertical direction of drilling has different angles from horizontal plane.Fig. 4, Fig. 5 and Fig. 6 are respectively I in Fig. 3, II
Portion, the sectional view of III, section are cutd open respectively along the 6 parallel directions of fire prevention drilling that eye 3 is cut with benefit, transport suitable from working face
1 sees to working face rail along 2.
So that fire prevention drilling 6 extends to the edge and middle part in Yi Mei areas, it is in the milk and notes to goaf using fire prevention drilling 6
Water, one group of 6 each two of fire prevention drilling, every group of spacing is identical, the height one of the height and back of the drilling 6 of preventing fires
Cause, every group of two fire prevention drillings 6, a middle part for being located at Yi Mei areas 7, another is located at the edge in Yi Mei areas 7, the fire prevention
Drilling 6 sets steel pipe from the plane of disruption to borehole bottom location, and the aperture of each fire prevention drilling 6 adds and connect for the quick of grouting
Head, 1# to 38# represents 38 fire prevention drillings 6 in figure；
(4) after related data is exceeded in step (1), grouting water filling is carried out to goaf first, then using fortune along 1
Note nitrogen pipe 4 reduces the temperature and oxygen content in goaf to goaf liquid carbon dioxide, while controlling work face goaf
Below 30 DEG C, goaf oxygen concentration is below 10% for temperature everywhere；
(5) while occurring hidden danger region to working face, using fire prevention drilling 6 to hidden danger regional perfusion MEA fireproofing extinguishing materials,
The oxygen in isolation ignition hidden danger region, eliminates ignition hidden danger；
(6) goaf air leaking is reduced.
Away from 60m before tomography play passing fault after in the range of 20m (rail is moved back at chi point 890m~1032m along 2), up and down corners
Must continuously fill, and to fill it is tight, reduce most easily turn into leak out passage " twice " reduce goaf air leaking.
(7) working face extraction speed is accelerated.
During working face extraction, strengthen the maintenances of electromechanical equipment such as working face coal machine, transporter and prepare enough spare part,
Reduce electromechanical equipment and damage influence time, it is ensured that the serviceability rate of equipment.By a series of specific aim measure, substantially prevent
Equipment fault influence in production class, so as to accelerate working face extraction speed.For fortune along the fine and close of 1000~1035m exposure
Middle sandstone, construction drill, advanced loosening is carried out to rock and is crushed in advance, reduces loss and work of the coal machine cut sandstone to cutter pick
Make to blow out influence time in the face of face, accelerate working face extraction speed.
Drilling moves back 1000~1020m of chi point or so in 1211 (3) fortune along 1, and construct a row, altogether 6 blast holes, aperture
98mm, pitch of holes is 4m.
Explosive selects coal mine gas drainage glue powder column, specifications and models：5.0kg/ volumes of quality, this
Blow out consumption 800Kg explosives altogether.Using a two stifled notes, sealed borehole length is 10m to sealing of hole mode.
After hole-sealing grouting terminates 24 hours, bursting work is carried out.Using a powder charge, once detonation mode.
(8) to carrying out watering cooling after work face frame.
During passing fault, per tour must arrange personnel to having something lost coal or work face frame rear CO and temperature >=35 occur after frame
DEG C place watering be no less than 1 time, to work face frame after goaf lower the temperature.
(9) extraction is rationally controlled.
During working face enters tomography, according to 1211 (3) face gas situations, rationally control is carried out to extraction system and is taken out,
Balance extraction and fireproof relation.
(10) high side section front pre-grouting is reinforced.
Roof control at the upper and lower termination of working face, especially termination triangle, is a weight of fully-mechanized mining working field management
Point.It is enhancing coal seam resistance to overturning, height occurs during preventing back production and emit, rail is sprayed along 2 times side high side section tops in advance
Grouting and reinforcing.
As shown in fig. 7, after taking the effective fireproofing technique measure of the above, 1211 (3) working face rails along 2 from start into
Upper corner CO maximums are in 10ppm or so during entering tomography, back production；Frame shelves CO maximums are during 20ppm or so, Coal Face Passing Through Fault
CO overall stabilitys.After terminating to tomography, upper corner and frame shelves CO are 0ppm.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of fully-mechanized mining working crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion, it is characterised in that comprise the following steps：
(1) the related data timing to working face is detected；
(2) to goaf continuous nitrogen injection：
After coal mining terminates, before working face fortune is along passing fault, note nitrogen pipe is pre-buried, whole during noting nitrogen to goaf continuous nitrogen injection
Nitrogen gas concn in goaf is more than or equal to 97%；
(3) goaf is in the milk and water filling
Before working face rail is along passing fault, grout pipe is pre-buried and is in the milk to goaf, while mend to cut intraocular and set in working face preventing
Jet pierer hole so that fire prevention drilling extends to the edge and middle part in Yi Mei areas, using fire prevention drilling to goaf grouting and water filling；
(4) after related data is exceeded in step (1), grouting water filling is carried out to goaf first, then using transporting suitable note nitrogen
Pipe reduces the temperature and oxygen content in goaf to goaf liquid carbon dioxide, while controlling work face goaf everywhere
Below 30 DEG C, goaf oxygen concentration is below 10% for temperature；
(5) while occurring hidden danger region to working face, using fire prevention drilling to hidden danger regional perfusion fireproofing extinguishing materials, isolation is under fire
The oxygen in hidden danger region, eliminates ignition hidden danger.
2. a kind of fully-mechanized mining working according to claim 1 crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion, its feature
It is, in the step (1), timing detection working face, return, the gas in goaf, temperature and humidity relevant parameter, while
After up and down corners, frame to working face and frame shelves temperature is measured, while being set up an office inspection carbon monoxide at work face frame shelves
Situation.
3. a kind of fully-mechanized mining working according to claim 1 crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion, its feature
It is in the step (2) and step (3), to carry out noting nitrogen and grouting using fire prevention pipeline, the fire prevention pipeline includes being arranged on
Working face fortune along in note nitrogen pipe, be arranged on working face rail along in multiple grout pipes, be arranged on working face benefit cut many of intraocular
The individual fire prevention drilling being parallel to each other.
4. a kind of fully-mechanized mining working according to claim 3 crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion, its feature
It is that the outlet ends of the note nitrogen pipe are provided with multiple threeways.
5. a kind of fully-mechanized mining working according to claim 3 crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion, its feature
It is to be provided with switching gate valve at the import of the note nitrogen pipe, is provided for connecting liquid carbon dioxide pipeline on the note nitrogen pipe
Short circuit mouthful, the short circuit mouthful is located at the exit of switching gate valve.
6. a kind of fully-mechanized mining working according to claim 3 crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion, its feature
It is that the grout pipe is lifted on back, the slurries of perfusion in floral tube, grout pipe is installed on the grout outlet of the grout pipe
Tu Shui ratios be 1:4~1：5.
7. a kind of fully-mechanized mining working according to claim 3 crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion, its feature
It is that one group of each two of fire prevention drilling, every group of spacing is identical, height and the height one of back that the fire prevention drills
Cause, every group of two fire prevention drillings, a middle part for being located at Yi Mei areas, another is located at the edge in Yi Mei areas.
8. a kind of fully-mechanized mining working according to claim 7 crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion, its feature
It is that the fire prevention drilling sets steel pipe from the plane of disruption to borehole bottom location, the aperture of each fire prevention drilling is added for filling
The snap joint of slurry.
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| CN201710081015.9A CN106812550A (en) | 2017-02-15 | 2017-02-15 | A kind of fully-mechanized mining working crosses the method that major fault prevents and treats Period of Coal Seam Spontaneous Combustion |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678798A (en) * | 2018-03-01 | 2018-10-19 | 国家能源投资集团有限责任公司 | The control method of spontaneous combustion in goaf during being withdrawn for fully mechanized coal face |
| CN109854294A (en) * | 2019-03-29 | 2019-06-07 | 中国矿业大学 | A kind of flue gas displacement enhancing goaf gas extraction and goaf prevent and treat fire method |
| CN110905583A (en) * | 2019-12-16 | 2020-03-24 | 内蒙古上海庙矿业有限责任公司 | Three-step comprehensive fire extinguishing method |
| CN110985094A (en) * | 2019-12-16 | 2020-04-10 | 神华包头能源有限责任公司 | Comprehensive fire prevention and extinguishing method for goaf |
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| CN111677543A (en) * | 2020-06-23 | 2020-09-18 | 淮南矿业(集团)有限责任公司 | Comprehensive fire prevention method during recovery period of water-flooded easily spontaneous combustion coal face |
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| CN113863973A (en) * | 2021-10-27 | 2021-12-31 | 窑街煤电集团有限公司 | Nitrogen injection, grouting fire prevention and extinguishing process implemented by arranging drill holes in self-combustion coal seam |
| CN113863973B (en) * | 2021-10-27 | 2024-01-16 | 窑街煤电集团有限公司 | Process for implementing nitrogen injection, grouting and fire prevention by arranging drill holes in spontaneous combustion coal bed |
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