CN106593523B - Goaf air leaking control method in a kind of shallow embedding close-in seams recovery process - Google Patents
Goaf air leaking control method in a kind of shallow embedding close-in seams recovery process Download PDFInfo
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- CN106593523B CN106593523B CN201710049272.4A CN201710049272A CN106593523B CN 106593523 B CN106593523 B CN 106593523B CN 201710049272 A CN201710049272 A CN 201710049272A CN 106593523 B CN106593523 B CN 106593523B
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 239000003245 coal Substances 0.000 claims abstract description 43
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 230000002269 spontaneous effect Effects 0.000 claims abstract description 17
- 238000005065 mining Methods 0.000 claims abstract description 15
- 239000000700 radioactive tracer Substances 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 239000006260 foam Substances 0.000 claims description 13
- 238000013467 fragmentation Methods 0.000 claims description 8
- 238000006062 fragmentation reaction Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000011083 cement mortar Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000004567 concrete Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 229910003480 inorganic solid Inorganic materials 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- 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
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
- G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention provides goaf air leaking control methods in a kind of shallow embedding close-in seams recovery process.The technologies such as Air conduct measurement and closure that this method is mainly blocked including earth's surface air leaking crack, underground is leaked out, it first measures the width of earth's surface mining induced fissure and calculates crack and leak out speed, to width, the crack exceeded with the wind speed that leaks out blocks, and goaf inner top panel is difficult to so that it is caving using manual type across falling into, return aircourse, it reduces and leaks out into goaf；Secondly O in Tube Bundle Monitoring System monitoring goaf is utilized2Concentration, according to O2The size of concentration judges that goaf whether there is and leaks out；Then it using tracer gas technique detects underground coal column and into the channel of leaking out in the place such as, air return lane, and takes corresponding leaking-stopping measure；While leak stopping, using wind turbine air regulator joint voltage regulating method balance goaf and working face wind pressure, goaf air leaking is reduced, goaf coal spontaneous combustion is prevented.
Description
Technical field
The present invention relates to goaf air leaking control method during a kind of seam mining, specifically a kind of shallow embedding low coverage coal
Goaf air leaking control method in layer recovery process.Belong to Leaking Stoppage in Coal Mine preventing and extinguishing fire technology field, be by earth's surface leakage stopping technology with
A kind of goaf air leaking integrated control method that underground leakage stopping technology is combined.
Technical background
The coal left in goaf after pit mining is under conditions of working face and overlying coal and rock crack persistently supply oxygen
Spontaneous combustion easily occurs.A large amount of CO, C are will produce when the coal imperfect combustion of spontaneous combustion2H6Equal pernicious gases, cause underground to be harmful to gas
Bulk concentration is exceeded, influences the normal production of coal mine.In addition, in some highly gassy mines, the heat that coal spontaneous heating generates is lost
It is also easy to cause fire damp explosion after reaching gas explosion point, has even more seriously threatened the life security of miner.
The generation of spontaneous combustion in goaf accident is controlled, is removed when accident occurs using thick loess grouting, three-phase froth, note nitrogen
Outside equal fire extinguishing coolings measure, it should also inhibit the generation of spontaneous combustion of remaining coal accident by changing autoignition conditions before spontaneous combustion.Pass through reduction
It is the important means for inhibiting spontaneous combustion of remaining coal that goaf air leaking, which reduces oxygen supply,.Traditionally goaf air leaking control, which mainly has, presses
Wind turbine part pressure ventilation, the methods of goaf closed.But when implementing these methods in default of the step of a set of reasonable standard
Rapid measure, causing to leak out by control inhibits the method for coal spontaneous combustion unsatisfactory, spontaneous combustion in goaf problem still when have hair
It is raw.
The problem of shifting to western part, encountered in western coal recovery process with state coal strategy is also more prominent.Needle
To western shallow-reserved coal seam, since coal seam thickness is big, geological conditions is good, the general exploitation side for using fully mechanized mining high working face full-seam mining
Formula provides condition which results in Residual coal in goaf thickness is larger for spontaneous combustion in goaf.Further, since mine of western
Bury shallow in coal seam（30m~250m）, spacing it is close（20m~50m）, easy spontaneous combustion, basement rock it is thin, sandy soil geologic feature, after seam mining
Mining induced fissure, which is often developed, arrives earth's surface, forms earth's surface air leaking crack channel, exacerbates spontaneous combustion in goaf.Therefore, it controls
Goaf air leaking is particularly important during shallow coal scam.
Invention content
Technical problem to be solved by the present invention lies in overcome defect of the existing technology, it is proposed that a kind of shallow embedding is close
Away from goaf air leaking control method during seam mining, for goaf air leaking synthesis control in shallow embedding close-in seams recovery process
System.
The present invention is to realize the technical side that is proposed of goal of the invention, goaf in a kind of shallow embedding close-in seams recovery process
Air leakage control method, step are：
Step 1, it measures the width of earth's surface mining induced fissure and calculates crack and leak out speed, it is exceeded to width and the wind speed that leaks out
Crack is blocked, and is difficult to make it using the method for being manually caving tunnel across falling into, return aircourse to goaf inner top panel
It is caving, reduces and leak out into goaf.
Step 2, O in Tube Bundle Monitoring System monitoring goaf is utilized2Concentration, according to O2The size of concentration judges that goaf is
No presence is leaked out, and is blocked to air leaking crack.
Step 3, using tracer gas technique underground coal column is detected and into the channel of leaking out in the place such as, return aircourse, and to leakage
The leak stopping of wind channel；While leak stopping, adopted using wind turbine-air regulator joint voltage regulating method balance goaf and working face wind pressure, reduction
Dead zone is leaked out, and goaf coal spontaneous combustion is prevented.
It is described to judge Fracture Width and the exceeded criterion of the wind speed that leaks out, it longitudinal crack of the width more than 10cm and laterally splits
It is exceeded to regard as Fracture Width for gap；Width is split in the longitudinal cracks below 10cm and lateral crack using tracer gas technique calculating
Gap is leaked out wind speed, and the wind speed that will leak out is exceeded more than the crack of 0.05m/s wind speed of regarding as leaking out, and is considered as main air leaking crack.
The crack exceeded with the wind speed that leaks out to width blocks, and method for blocking is the exceeded crack of width, to its elder generation
It notes inorganic solidified aerated fluid to block and cure, then fills loess leak stopping；The exceeded crack of the wind speed that leaks out fills loess leak stopping.
The method that the tracer gas technique calculates the wind speed that leaks out, utilizes SF6Tracer gas technique will at earth's surface mining induced fissure
Steel pipe, which is inserted into crack, continuously discharges pure SF6Gas（Flow is 20ml/min）, the start and end time of release is recorded, is being released
Put SF6Sampled point continuously detects SF at working face Air return corner after gas6Gas, according to two point distances be initially received SF6
Gas time calculates the wind speed that leaks out.
The artificial method for being caving tunnel, the anchor cable exited in advance in two tunnels in mobile hydraulic support make top plate and
When be caving, stepping back the tunnel that cannot be still caving by the way of putting small big gun for anchor cable makes it be caving.
It is described according to O in goaf2The size of concentration judges that goaf whether there is the standard leaked out, away from work in goaf
O when making face more than 80m2Concentration is more than 8%, regards as goaf air leaking, need to be leaked out channel using trace gas detection underground, right
Air leaking crack is blocked.In addition, if O in goaf2Regional extent of the concentration more than 8% is more than 100m, then need to be in air return lane
Road pipe laying implements goaf in falling of the method goaf of nitrogen injection, reduces heterogeneous goaf band range.
It is described to be leaked out the method in channel using tracer gas technique detection underground, the cloth at 200 meters away from working face of intake
Point of release is set, arranges sampled point at 150 meters away from working face of return aircourse, one sampled point is set every 50m between 2 points.With
The speed of 20ml/min is in point of release continuous quantitative releasing SF6Then search gas acquires gas sample at each sampled point, by dividing
It analyses and collects SF at each sampled point6Concentration variation, determine between adjacent two sampled point with the presence or absence of channel of leaking out.
Described pair of channel leak stopping of leaking out, method be, to prevent Fragmentation Coal Pillar to goaf air leaking, is used in recovery process
The inorganic solidified foam of spray carries out consolidation process to Fragmentation Coal Pillar, i.e., inorganic by the note that drills to tunnel goaf side Fragmentation Coal Pillar
Cure foam, drill hole depth 2m, spacing 3m, and inorganic solidified foam volume is noted per hole and is not less than 2m3；It is prevention work face into, return air
Corner is carried out every 10~20m into setting spoil bag windbreak at, Air return corner to goaf air leaking in the advance of the face
Leak stopping；Crack and caving place to prevent the local places such as tunnel top, side are leaked out, to the local place crack such as tunnel top, side and
Caving place water spray cement mortar leak stopping.
The concrete measure for combining voltage regulating method pressure regulation using wind turbine-air regulator, according to the actually required air quantity of working face, to subtract
Regulating fan is arranged in intake, regulation wind window is arranged in return aircourse, in pressure regulation area for few working face and goaf pressure difference
Interior air regulator is disposed about the pressure difference that differential manometer measures Overburden gob area and air return lane, is adjusted by observing differential manometer registration to determine
Section air regulator crosses air port area, adjusts pressure regulation section and goaf pressure difference, leaks out to reach to reduce in goaf, prevents goaf
The purpose of coal spontaneous combustion.
The method of the present invention differentiates whether crack is leaked out exceeded and super to leaking out according to earth's surface Fracture Width and the wind speed that leaks out
Take corresponding waterproofing in mark crack.Underground is judged with the presence or absence of channel of leaking out according to goaf oxygen concentration, and uses tracer
Gas method determines that underground is leaked out channel position, is leaked out channel using inorganic solidified foam blocking, gives the specific implementation of measure
Step and parameter, this method can effectively block the upper and lower air leaking crack of well during the shallow embedding close-in seams advance of the face, ensure shallow
Bury the safety and high efficiency of close-in seams working face.The present invention is easy to operate, highly practical, and reliability is high, in shallow embedding low coverage coal
Layer exploitation mine has wide popularizing application prospect.
Description of the drawings
Fig. 1 goaf air leaking integrated control method flow charts
22305 working face earth's surface air leaking crack distribution map of Fig. 2 coal mines.Wherein, A is 22304 haulage gates, and B is 22305
Air return way, C are 22305 working faces, and D is 22305 haulage gates, and E is 22306 air return way.
Specific embodiment
Shown in FIG. 1 is that goaf synthesis Air leakage control method is implemented in a kind of shallow embedding close-in seams recovery process of the present invention
Flow chart makes further instructions the present invention with reference to example.
Backgrounds：Certain three panel of mine, 12 coal coal seam buried depth is 96 ~ 233m, coal seam thickness minimum 1.95m, maximum
8.03m, average 5.4m.Three panels, 12 coal started back production in 1999, until back production in 2007 terminates, arranged altogether in panel 6 it is comprehensive
Mining face cuts eye height 3.6m, and top coal leaves thickness 2.9m, and mating 5m holders carry out back production, average back production along seat earth
Height is 4.6m, and 12 coal seams are average in 43m or so with 22 coal seam spacing.
22305 working faces are after beginning back production on June 16, propulsion 4.3m in middle class in a kindergarten overhead caving on the 17th.Working face extraction
Afterwards, roof caving crack is connected with Overburden gob area, and upper and lower goaf is formed through Composite goaf area, leaks out in goaf tight
Weight, there is a possibility that spontaneous combustion, threaten to working face safety in production.
It leaks out to control in goaf, ensures the safety in production of mine, channel envelope of leaking out is provided using the method for the present invention
Stifled scheme, is as follows：
1）The occurrence such as gap wide, gap is long, the trend of earth's surface mining induced fissure, statistics are measured using compass, tape measure, GPS positioning instrument
Go out the distribution situation of Fracture Width, as shown in table 1.
1 different in width earth's surface mining induced fissure proportion of table
| Fracture Width（cm） | Item number | Ratio（%） |
| 1-10 | 57 | 40.43 |
| 10-50（Containing 10） | 37 | 26.24 |
| 50-100 contains（50） | 19 | 13.48 |
| 100 or more（Containing 100） | 27 | 19.15 |
2）According to statistics fractured situation, Fracture Width is counted out more than 10cm and wind speed splitting more than 0.05m/s of leaking out
Gap, as shown in Figure 2.Crack is the crack for currently needing to block in Fig. 2, to Fracture Width more than 10cm crack first note it is inorganic
Cure foam, after inorganic solidified foam and broken rock mass are consolidated the hard substrate to be formed and block crack, then covers
Sandy soil leak stopping；Directly use sandy soil leak stopping in crack to Fracture Width less than 10cm.
3）The anchor cable exited in advance in two tunnels in mobile hydraulic support makes top plate be caving in time, still cannot for stepping back
The tunnel being caving makes it be caving by the way of putting small big gun.
4）Using oxygen concentration in Tube Bundle Monitoring System monitoring goaf, find at 90 meters away from working face, goaf oxygen
A concentration of 10%, there is channel of leaking out in underground.It leaks out channel followed by tracer gas technique detection underground.In intake away from work
Make to arrange point of release at 200 meters of face, with the speed continuous quantitative releasing SF of 20ml/min6Search gas, then in the point toward work
Make that a sampled point is arranged every 50m on the direction of face, until the last one sampled point of 150 meters of air return lane place setting, passes through analysis
SF at each sampled point6Concentration changes, and finds to leak out into existing at, Air return corner and return aircourse coal column in working face.
5）Leak stopping at the coal column of return aircourse.To prevent Fragmentation Coal Pillar to goaf air leaking, in recovery process using spray without
Machine cures foam and carries out consolidation process to Fragmentation Coal Pillar, i.e., notes inorganic solidified bubble by drilling to tunnel goaf side Fragmentation Coal Pillar
Foam, drill hole depth 2m, spacing 3m, and inorganic solidified foam volume is noted per hole and is not less than 2m3.
6）Crack leak stopping of the working face into the local place such as, Air return corner and tunnel top, side.For prevention work face into, return
Wind corner to goaf air leaking, in the advance of the face every 10~20m into setting spoil bag windbreak at, Air return corner into
Row leak stopping；Crack and caving place to prevent the local place such as tunnel top, side are leaked out, to some areas cracks such as tunnel top, sides
With caving place water spray cement mortar leak stopping.
7）22305 working face actual air volumes are 1800m3/min, are determined according to actual air volume and use work(in intake
The booster that rate is 2 × 30kw carries out pressure regulation, while regulation wind window is arranged in return aircourse and carries out wind turbine-air regulator joint
Pressure regulation, after regulating fan operating, differential manometer registration is 94pa.Air port area is crossed by reducing air regulator, increases pressure regulation section pressure,
So that differential manometer registration is between 30~50pa, ensures that goaf is balanced with face pressure, reduce in goaf to reach
The purpose leaked out.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. goaf air leaking control method in a kind of shallow embedding close-in seams recovery process, step are：
Step 1, it measures the width of earth's surface mining induced fissure and calculates crack and leak out speed, to width and the exceeded crack of wind speed of leaking out
It is blocked, and goaf inner top panel is difficult to so that it is caving using the method for being manually caving tunnel across falling into, return aircourse,
It reduces and leaks out into goaf；
Step 2, O in Tube Bundle Monitoring System monitoring goaf is utilized2Concentration, according to O2The size of concentration judges whether goaf deposits
It is leaking out, and air leaking crack is blocked；
Step 3, using tracer gas technique underground coal column is detected and into the channel of leaking out of, return aircourse, and to channel leak stopping of leaking out；
While leak stopping, using wind turbine-air regulator joint voltage regulating method balance goaf and working face wind pressure, goaf air leaking is reduced, is prevented
Only goaf coal spontaneous combustion.
2. goaf air leaking control method in a kind of shallow embedding close-in seams recovery process according to claim 1, it is characterized in that：
Judge Fracture Width and criterion that the wind speed that leaks out is exceeded is, longitudinal crack of the width more than 10cm and lateral crack are regarded as splitting
Gap width is exceeded；Width calculates crack in the longitudinal cracks below 10cm and lateral crack, using tracer gas technique and leaks out wind speed,
The wind speed that will leak out is exceeded more than the crack of 0.05m/s wind speed of regarding as leaking out, and is considered as main air leaking crack.
3. goaf air leaking control method in a kind of shallow embedding close-in seams recovery process according to claim 1, it is characterized in that：
The crack exceeded with the wind speed that leaks out to width blocks, and method for blocking is that the exceeded crack of width first notes it inorganic solid
Change foam blocking and solidification, then fills loess leak stopping；The exceeded crack of the wind speed that leaks out fills loess leak stopping.
4. goaf air leaking control method in a kind of shallow embedding close-in seams recovery process according to claim 2, it is characterized in that：
The tracer gas technique calculates crack and leaks out the method for wind speed, utilizes SF6Tracer gas technique is at earth's surface mining induced fissure by steel pipe
It is inserted into crack and continuously discharges pure SF6Gas, flow 20ml/min record the start and end time of release, in release SF6
Sampled point continuously detects SF at working face Air return corner after gas6Gas, according to two point distances be initially received SF6Gas
Time calculates the wind speed that leaks out.
5. goaf air leaking control method in a kind of shallow embedding close-in seams recovery process according to claim 1, it is characterized in that：
The artificial method for being caving tunnel, the anchor cable exited in advance in two tunnels in mobile hydraulic support make roof caving, for
Anchor cable steps back the tunnel that cannot be still caving makes it be caving by the way of putting small big gun.
6. goaf air leaking control method in a kind of shallow embedding close-in seams recovery process according to claim 1, it is characterized in that：
Described pair of channel leak stopping of leaking out, method are reinforced to Fragmentation Coal Pillar using the inorganic solidified foam of spray in recovery process
Processing, i.e.,：Inorganic solidified foam is noted by drilling to tunnel goaf side Fragmentation Coal Pillar, drill hole depth 2m, spacing 3m, is noted per hole
Inorganic solidified foam volume is not less than 2m3；In the advance of the face, kept off into setting spoil bag at, Air return corner every 10~20m
Brattice carries out leak stopping；To tunnel top, side crack and caving place water spray cement mortar leak stopping.
7. goaf air leaking control method in a kind of shallow embedding close-in seams recovery process according to claim 1, it is characterized in that：
The concrete measure for combining voltage regulating method using wind turbine-air regulator, according to the actually required air quantity of working face, to reduce working face and adopting
Regulating fan is arranged in intake, regulation wind window is arranged in return aircourse, in pressure regulation section near air regulator for dead zone pressure difference
It arranges that differential manometer measures the pressure difference of Overburden gob area and air return lane, determines that regulation wind window crosses air port by observing differential manometer registration
Area adjusts pressure regulation section and goaf pressure difference.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710049272.4A CN106593523B (en) | 2017-01-23 | 2017-01-23 | Goaf air leaking control method in a kind of shallow embedding close-in seams recovery process |
| PCT/CN2017/102397 WO2018133435A1 (en) | 2017-01-23 | 2017-09-20 | Comprehensive method for controlling air leakage in goaf area during shallow and close coal seam mining process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710049272.4A CN106593523B (en) | 2017-01-23 | 2017-01-23 | Goaf air leaking control method in a kind of shallow embedding close-in seams recovery process |
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| CN106593523B true CN106593523B (en) | 2018-08-17 |
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| CN106593523B (en) * | 2017-01-23 | 2018-08-17 | 中国矿业大学 | Goaf air leaking control method in a kind of shallow embedding close-in seams recovery process |
| CN107620605A (en) * | 2017-08-10 | 2018-01-23 | 长春黄金研究院 | A kind of underground mine goaf large area air-leakage control method |
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| CN108801583B (en) * | 2018-06-05 | 2023-11-17 | 华北科技学院 | Goaf flow field simulation experiment device |
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| CN110566276B (en) * | 2019-09-05 | 2020-09-25 | 西安科技大学 | Method for distinguishing coal spontaneous combustion dangerous area by utilizing goaf air leakage |
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| CN113218616B (en) * | 2021-06-07 | 2022-05-17 | 太原理工大学 | Physical experiment platform for simulating grouting partition air leakage of coal mine goaf |
| CN113323710B (en) * | 2021-07-20 | 2021-12-21 | 中国矿业大学(北京) | Goaf nitrogen injection pressure-equalizing air leakage prevention structure, system and method |
| CN113567061B (en) * | 2021-07-23 | 2024-01-12 | 安徽理工大学 | Air leakage detection method for goaf group in close-range coal seam mining |
| CN113863984B (en) * | 2021-10-29 | 2024-03-22 | 安徽理工大学 | Method for preventing and controlling air leakage in exploitation of extremely-close coal seam group |
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| SU1105659A1 (en) * | 1983-01-13 | 1984-07-30 | Восточный научно-исследовательский институт по безопасности работ в горной промышленности | Composition for preventing endogenous fires |
| SU1221356A1 (en) * | 1984-09-04 | 1986-03-30 | Shtele Vladimir | Method of working thick gently-sloping ore deposits |
| CN103396075A (en) * | 2013-07-17 | 2013-11-20 | 中国矿业大学 | Flame-retardant paste material for coal mine underground air leakage stoppage and preparation method thereof |
| CN103396154A (en) * | 2013-07-17 | 2013-11-20 | 中国矿业大学 | Inorganic curing foam material for surface plugging of shallow coal seam mining area and preparation method thereof |
| CN104296944A (en) * | 2014-10-15 | 2015-01-21 | 中国神华能源股份有限公司 | Testing method for air leakage of goaf under mine in earth surface direction of shallow coal seam coal mine |
| CN104462654A (en) * | 2014-11-11 | 2015-03-25 | 中国矿业大学 | Shallow burial coal mining earth surface interpenetrated crack distribution and air leakage characteristic judgment method |
| CN104514577A (en) * | 2014-12-12 | 2015-04-15 | 中国矿业大学 | Method for efficiently treating spontaneous ignition of remaining coal in large area goaf of shallow-buried coal bed |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3413602C2 (en) * | 1984-04-11 | 1986-04-24 | Bergwerksverband Gmbh, 4300 Essen | Method for relocating the cavities of a fracture field |
| CN102828767A (en) * | 2012-07-19 | 2012-12-19 | 大同煤矿集团有限责任公司 | Gob natural fire control method |
| CN105134281B (en) * | 2015-09-08 | 2017-06-30 | 山东科技大学 | A kind of fire extinguishing method during multiaspect adjacent air space island face face digging for colliery |
| CN106593523B (en) * | 2017-01-23 | 2018-08-17 | 中国矿业大学 | Goaf air leaking control method in a kind of shallow embedding close-in seams recovery process |
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- 2017-09-20 WO PCT/CN2017/102397 patent/WO2018133435A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1105659A1 (en) * | 1983-01-13 | 1984-07-30 | Восточный научно-исследовательский институт по безопасности работ в горной промышленности | Composition for preventing endogenous fires |
| SU1221356A1 (en) * | 1984-09-04 | 1986-03-30 | Shtele Vladimir | Method of working thick gently-sloping ore deposits |
| CN103396075A (en) * | 2013-07-17 | 2013-11-20 | 中国矿业大学 | Flame-retardant paste material for coal mine underground air leakage stoppage and preparation method thereof |
| CN103396154A (en) * | 2013-07-17 | 2013-11-20 | 中国矿业大学 | Inorganic curing foam material for surface plugging of shallow coal seam mining area and preparation method thereof |
| CN104296944A (en) * | 2014-10-15 | 2015-01-21 | 中国神华能源股份有限公司 | Testing method for air leakage of goaf under mine in earth surface direction of shallow coal seam coal mine |
| CN104462654A (en) * | 2014-11-11 | 2015-03-25 | 中国矿业大学 | Shallow burial coal mining earth surface interpenetrated crack distribution and air leakage characteristic judgment method |
| CN104514577A (en) * | 2014-12-12 | 2015-04-15 | 中国矿业大学 | Method for efficiently treating spontaneous ignition of remaining coal in large area goaf of shallow-buried coal bed |
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| WO2018133435A1 (en) | 2018-07-26 |
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