CN106761925B - A kind of explosion-proof closed air bag of coal mine roadway - Google Patents
A kind of explosion-proof closed air bag of coal mine roadway Download PDFInfo
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- CN106761925B CN106761925B CN201710089635.7A CN201710089635A CN106761925B CN 106761925 B CN106761925 B CN 106761925B CN 201710089635 A CN201710089635 A CN 201710089635A CN 106761925 B CN106761925 B CN 106761925B
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- 239000003245 coal Substances 0.000 title claims abstract description 16
- 239000011229 interlayer Substances 0.000 claims abstract description 61
- 239000010410 layer Substances 0.000 claims abstract description 43
- 238000004880 explosion Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 58
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 38
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 238000011068 loading method Methods 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 10
- 239000005060 rubber Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000005062 Polybutadiene Substances 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 229920002857 polybutadiene Polymers 0.000 claims description 6
- 239000002775 capsule Substances 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 230000003137 locomotive effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims 2
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000002356 single layer Substances 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/107—Dams, e.g. for ventilation inflatable
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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)
- Pipe Accessories (AREA)
Abstract
The present invention discloses a kind of explosion-proof closed air bag of coal mine roadway, belongs to prevention and control of mine disaster technical field, and structure specifically includes that inner bladder, balloon outer, gas sample acquisition pipe.Closed air bag uses inside and outside double-layer air bag structure, and balloon outer is divided into multiple interlayers, and the present invention, to the form of air bag compressed action, makes the energy consumption exploded on the inside of confined space totally, it is ensured that the safety of the closed outer space in tunnel using explosion gas.Closed means explosion-proof compared to traditional coal mine roadway, present invention employs the techniques that inside and outside air bag is inflated simultaneously, save manpower and time, are conducive to disaster relief personnel and complete airtight execution as early as possible and withdraw, securely and reliably.In addition, the gas sample acquisition work of enclosed interior can be carried out during using closed gas bag sealing, be conducive to analyze the variation of mine the condition of a disaster in time.
Description
Technical field
The invention belongs to prevention and control of mine disaster technical fields, and in particular to a kind of explosion-proof closed air bag of coal mine roadway.
Background technique
In colliery industry production process, gas and fire are main natural calamities, are lost not to caused by colliery industry
It can estimate.During coal mine gas disaster and the fire disaster relief, closed tunnel is very common disaster relief technological means.Pass through lane
Road is closed, obstructs air flowing and heat exchange inside and outside closed point, prevents fire or gas explosion wider to mine
Interior sprawling controls casualty loss in minimum so that it is guaranteed that disaster relief work is gone on smoothly.The closed skill in the existing tunnel in China
Art, predominantly sandstone fill explosion-proof closed means, and construction technology is cumbersome, the construction time is too long, are unfavorable for removing rapidly for personnel
From not being inconsistent with the theory of emergency escape.And existing gas bag sealing technology generallys use the structure of single layer air bag, and intensity is low,
It is mostly used for during the mine fire disaster relief, blocks the flowing of pernicious gas, and can not be explosion-proof.Therefore, this invention address that grinding
It sends out the explosion-proof closed air bag of coal mine roadway a kind of, solves defect existing for the closed technology in existing tunnel, preferably ensure that mine is rescued
Calamity process is gone on smoothly, and promotes the safe operation of colliery industry.
Summary of the invention
The present invention discloses a kind of explosion-proof closed air bag of coal mine roadway, and configuration is approximately a cylindrical rubber air bag,
According to specification difference, the length is 4~6m, cross-sectional area is 8~14m3, structure specifically includes that inner bladder, outer layer gas
Capsule, gas sample acquisition pipe.
The inner bladder is located inside balloon outer, and inside and outside two layers of air bag is connected by multiple groups diaphragm of rubber, thus will be outer
Layer air bag is divided into 4~6 section interlayers in the longitudinal direction, and the interlayer for meeting quick-fried face positioned at air bag is known as meeting quick-fried interlayer, fills positioned at air bag
The interlayer at gas end is known as inflating interlayer, remaining several interlayer of middle part are known as buffering interlayer.
Quick-fried interlayer, inner bladder, the inflation interlayer exterior material of meeting is made by high-strength nitrile butadiene rubber, has intensity
Height, impact resistance, high temperature resistance.Buffering interlayer exterior material, diaphragm of rubber are made by synthesizing butadiene rubber, have wear-resisting, bullet
Good, the fire-retardant performance of property.
2 spaced valves are installed between the balloon outer adjacent spacers, and two charge valves are installed in inflation interlayer tail end, point
Not Wei outer layer charge valve and internal layer charge valve, above-mentioned each valve is check valve.Inner bladder is drawn one to outside closed air bag and is filled
Airway connects internal layer charge valve, the inflation for inner bladder.Inner bladder and each interlayer of balloon outer are mounted on discouraged
Valve, inner bladder draw a discouraged conduit to outside closed air bag, connect internal layer charge valve, for losing heart for inner bladder.
The gas sample acquisition pipe is metal bellows material, flexible, and has some strength, which is adhered to by sling
In outside balloon outer, after air bag inflation, gas sample acquisition pipe is sandwiched between wall and gasbag outer surface, and can guarantee its pipe
The connectivity on road.
The operating air pressure of the exterior airbag is lower than the operating air pressure of inner balloon, is conducive to the whole flexible and change of air bag
Shape, and then can be closely sturdy with wall, it is ensured that obturation effect.
A kind of explosion-proof closed air bag of coal mine roadway, which is characterized in that main operational steps are as follows:
Step 1: preparation
In conjunction with air bag specification, drift section actual conditions, the work of the gas volume injected needed for determining and inner bladder
Make pressure value P1With the working pressure P of balloon outer2.According to equation of gaseous state, high pressure bottled nitrogen specification and parameter are calculated,
Select the high-pressure nitrogen bottle of appropriate size.Explosion-proof closed air bag, high-pressure nitrogen bottle, loading line are transported to tunnel by electric locomotive
The closed position of design suitably clears up the sundries in closed place, air bag is spread out, is laid in tunnel ground.
Step 2: air bag is inflated
Ectonexine air bag is inflated simultaneously, so as to greatly save the operating time.
The charge operation process of balloon outer are as follows: high-pressure nitrogen bottle and outer layer charge valve are connected with loading line, by outer
Spaced valve between layer charge valve and interlayer is followed successively by each section interlayer inflation of balloon outer.After inflation, balloon outer can be borrowed
The synthesis good elasticity of butadiene rubber is helped to fit closely with wall.
The charge operation process of inner bladder are as follows: connect high-pressure nitrogen bottle and internal layer charge valve with loading line, directly by
Internal layer charge valve is inner bladder inflation by inflating catheter.
After the completion of inflation, high-pressure nitrogen bottle and loading line are removed, withdraws from personnel and ancillary equipment.When the closed inside in tunnel
Gas explosion occurs, explosion gas impacts closed air bag, and compressing gasbag does work to it, to consume the energy of gas explosion, protects
Demonstrate,prove the safety of the closed outside in tunnel.When the severe friction that balloon outer saves interlayer and wall causes to rupture, in other interlayers
Layer air bag can continue to air-tightness, to keep the airtightness in tunnel to a certain extent, it is ensured that closed and explosion-proof effect.
Step 3: gas sample data monitoring
In closed period, for parameters such as air themperatures, gas density, oxygen concentration convenient for real-time monitoring enclosed interior,
Gas sample acquisition pipe is passed through by staff's timing and extracts gas sample, is joined using the air of the closed inside in chromatographic tunnel
Number, to make further analysis to enclosed interior disasters danger.
Step 4: air bag recycles
It after closed, breaks seal to closed area, recycles closed air bag at this time.Start letting out for inner bladder first
Air valve carries out inner bladder and loses heart, after, balloon outer successively starts each interlayer from inflation interlayer to quick-fried interlayer direction is met
Gas bleeder valve, complete lose heart work, closed airbag fold is recycled.
The present invention, to the form of air bag compressed action, makes the energy consumption of explosion totally, it is ensured that tunnel using explosion gas
The safety of closed outer space.Compared to the closed technology in existing tunnel, main beneficial achievement of the invention is: the coal mine coal mine
The explosion-proof closed air bag in tunnel fills explosion-proof closed means compared to traditional sandstone, and simple process is easy to operate, and inside and outside air bag fills simultaneously
Gas saves manpower and time, is conducive to disaster relief personnel and completes airtight execution as early as possible and withdraw, and has ensured the life peace of personnel
Entirely.Closed airbag structure uses inside and outside double-layer air bag structure, and balloon outer is divided into multiple interlayers, securely and reliably.In addition, making
It is worked with the gas sample acquisition that enclosed interior during closed gas bag sealing, can be carried out, is conducive to analyze the condition of a disaster variation feelings in time.
Detailed description of the invention
With reference to the accompanying drawing, further clear, complete explanation is made to the present invention:
Fig. 1 is the explosion-proof closed airbag structure schematic diagram of coal mine roadway
Description of symbols:
In figure: 1, meet quick-fried interlayer, 2, buffering interlayer, 3, inflation interlayer, 4, outer layer charge valve, 5, internal layer gas bleeder valve, 6, outer
Layer gas bleeder valve, 7, high-pressure nitrogen bottle, 8, spaced valve, 9, diaphragm of rubber, 10, gas sample acquisition pipe, 11, inflating catheter, 12, internal layer fills
Air valve, 13, discouraged conduit, 14, inner bladder
Specific embodiment
The present invention provides a kind of explosion-proof closed air bags of coal mine roadway, below by drawings and examples, with certain mine 2201
Technical application during working face extraction is engineering background, and technical scheme of the present invention will be described in further detail.
Closed air bag proposed by the invention is explained as follows first:
A kind of explosion-proof closed air bag of coal mine roadway, configuration are approximately a cylindrical rubber air bag, not according to specification
Together, the length is 4~6m, cross-sectional area is 8~14m2, structure specifically includes that inner bladder 14, balloon outer, gas sample are adopted
Collector 10.In conjunction with 2201 return airway actual sizes, cross-sectional area 10m is selected2, length is the explosion-proof closed air bag of 6m.
The inner bladder 14 is located inside balloon outer, and inside and outside two layers of air bag is connected by multiple groups diaphragm of rubber 9, thus will
Balloon outer is divided into 6 section interlayers in the longitudinal direction, and the interlayer for meeting quick-fried face positioned at air bag is known as meeting quick-fried interlayer 1, fills positioned at air bag
The interlayer at gas end is known as inflating interlayer 3, remaining several interlayer of middle part are known as buffering interlayer 2.It meets quick-fried interlayer 1, inner bladder 14, fill
3 exterior material of air-casing is made by high-strength nitrile butadiene rubber, has intensity height, impact resistance, high temperature resistance.It buffers outside interlayer 2
Portion's material, diaphragm of rubber 9 are made by synthesizing butadiene rubber, with the performance wear-resisting, elasticity is good, fire-retardant.
2 spaced valves 8 are installed between balloon outer adjacent spacers, two charge valves are installed in inflation 3 tail end of interlayer, respectively
For outer layer charge valve 4 and internal layer charge valve 12, above-mentioned each valve is check valve.Inner bladder 14 draws one to outside closed air bag
Inflating catheter 11 connects internal layer charge valve 12, the inflation for inner bladder.Inner bladder 14 and each interlayer of balloon outer are pacified
Equipped with gas bleeder valve, inner bladder 14 draws a discouraged conduit 13 to outside closed air bag, connects internal layer charge valve 12, is used for internal layer
Air bag loses heart.
The gas sample acquisition pipe 10 is metal bellows material, flexible, and has some strength, and the pipe is attached by sling
In outside balloon outer, after air bag inflation, gas sample acquisition pipe 10 is sandwiched between wall and gasbag outer surface, and can be guaranteed
The connectivity of its pipeline.
The operating air pressure of the exterior airbag is lower than the operating air pressure of inner balloon, is conducive to the whole flexible and change of air bag
Shape, and then can be closely sturdy with wall, it is ensured that obturation effect.
During certain 2201 working face extraction of mine, face gas concentration seriously transfinites, according to associated safety regulation, plan pair
The working face is closed, respectively construct in working face haulage gate with air return way together with it is closed, determine to propose using the present invention
The explosion-proof closed air bag of coal mine roadway.Technical application process is as follows:
First combine air bag specification, drift section actual conditions, determine inner bladder 14 working pressure 0.3MPa and
The working pressure 0.12MPa of balloon outer.According to equation of gaseous state, high pressure bottled nitrogen specification and parameter are calculated, selection is closed
The high-pressure nitrogen bottle 7 of suitable specification.Explosion-proof closed air bag, high-pressure nitrogen bottle 7, loading line are transported to tunnel design by electric locomotive
Closed position, suitably clear up the sundries in closed place, air bag spread out, be laid in tunnel ground.
Inside and outside air bag inflation is respectively operated by two staff simultaneously, the charge operation process of balloon outer are as follows: with inflation
Piping connection high-pressure nitrogen bottle and outer layer charge valve are followed successively by outer layer gas by the spaced valve 8 between outer layer charge valve 4 and interlayer
Each section interlayer of capsule is inflated.After inflation, balloon outer can closely be pasted by the good elasticity of synthesis butadiene rubber with wall
It closes.The charge operation process of inner bladder 14 are as follows: high-pressure nitrogen bottle and internal layer charge valve 12 are connected with loading line, directly by interior
Layer charge valve 12 is the inflation of inner bladder 14 by inflating catheter 11.
When gas explosion occurs for the closed inside in tunnel, explosion gas impacts closed air bag, and compressing gasbag does work to it, from
And the energy of gas explosion is consumed, guarantee the safety of the closed outside in tunnel.When balloon outer saves the violent of interlayer and wall
Friction causes to rupture, other interlayer inner bladders 14 can continue to air-tightness, to keep the close of tunnel to a certain extent
Closing property, it is ensured that closed and explosion-proof effect.
After the completion of inflation, high-pressure nitrogen bottle 7 and loading line are removed, personnel and ancillary equipment are withdrawn from.In closed period, it is
The parameters such as air themperature, gas density, oxygen concentration convenient for real-time monitoring enclosed interior are determined by staff in air return way
When by gas sample acquisition pipe 10 extract gas sample, using the air parameter of the closed inside in chromatographic tunnel, thus to close
It closes internal disasters danger and makes further analysis.
According to underground monitoring data, after closed 50 days, gas density and index of correlation gas concentration are extensive inside confined space
Again to level of security, decides and break seal to closed area, recycle closed air bag at this time.Start internal layer gas bleeder valve 5 first, into
Row inner bladder is lost heart, after, balloon outer successively starts losing heart for each interlayer from inflation interlayer 3 to quick-fried 1 direction of interlayer is met
Valve completes work of losing heart, closed airbag fold is recycled.
Claims (1)
1. a kind of application method of the explosion-proof closed air bag of coal mine roadway, it is characterised in that: described explosion-proof its entirety of closed air bag
Form is approximately a cylindrical rubber air bag, and according to specification difference, length is set as 4~6m, and cross-sectional area is set as 8~
14m3, structure specifically includes that inner bladder, balloon outer and gas sample acquisition pipe；
The inner bladder is located inside balloon outer, and inside and outside two layers of air bag is connected by multiple groups diaphragm of rubber, thus by outer layer gas
Capsule is divided into 4~6 section interlayers in the longitudinal direction, and the interlayer for meeting quick-fried face positioned at balloon outer is known as meeting quick-fried interlayer, is located at outer layer gas
The interlayer of capsule inflatable end is known as inflating interlayer, remaining several interlayer of middle part are known as buffering interlayer；
Meet quick-fried interlayer, inner bladder, inflation interlayer exterior material made by high-strength nitrile butadiene rubber, have intensity height, impact resistance,
High temperature resistance；
Buffering interlayer exterior material, diaphragm of rubber are made by synthesizing butadiene rubber, with the performance wear-resisting, elasticity is good, fire-retardant；
2 spaced valves are installed between balloon outer adjacent spacers, and two charge valves, respectively outer layer are installed in inflation interlayer tail end
Charge valve and internal layer charge valve, above-mentioned 2 spaced valves and outer layer charge valve and internal layer charge valve are check valve；Inner bladder
An inflating catheter is drawn to outside closed air bag, connects internal layer charge valve, the inflation for inner bladder；
Inner bladder and each interlayer of balloon outer are mounted on gas bleeder valve, and inner bladder, which draws one to outside closed air bag and loses heart, to be led
Pipe connects internal layer charge valve, for losing heart for inner bladder；
The gas sample acquisition pipe is metal bellows material, flexible, and has some strength, and gas sample acquisition pipe is attached by sling
In outside balloon outer, after balloon outer inflation, gas sample acquisition pipe is sandwiched between wall and balloon outer outer surface, and energy
Enough guarantee the connectivity of its pipeline；
The operating air pressure of the balloon outer is lower than the operating air pressure of inner bladder, is conducive to the flexible of explosion-proof closed air bag entirety
And deformation, and then can be closely sturdy with wall, it is ensured that obturation effect；
The application method main operational steps are as follows:
Step 1: preparation
In conjunction with explosion-proof closed air bag specification, drift section actual conditions, the gas volume and inner bladder that are injected needed for determining
Working pressure P1With the working pressure P of balloon outer2；According to equation of gaseous state, calculate high pressure bottled nitrogen specification and
Parameter selects the high-pressure nitrogen bottle of appropriate size；Explosion-proof closed air bag, high-pressure nitrogen bottle, loading line are transported by electric locomotive
The closed position designed to tunnel, suitably clears up the sundries in closed place, explosion-proof closed air bag is spread out, with being laid in tunnel
Face；
Step 2: explosion-proof closed air bag inflation
The charge operation process of balloon outer are as follows: connect high-pressure nitrogen bottle and outer layer charge valve with loading line, filled by outer layer
Spaced valve between air valve and interlayer is followed successively by each section interlayer inflation of balloon outer；After inflation, balloon outer can be by conjunction
It is fitted closely at the good elasticity of butadiene rubber with wall；
The charge operation process of inner bladder are as follows: high-pressure nitrogen bottle and internal layer charge valve are connected with loading line, directly by internal layer
Charge valve is inner bladder inflation by inflating catheter；
After the completion of inflation, high-pressure nitrogen bottle and loading line are removed, withdraws from personnel and ancillary equipment；When the closed inside in tunnel occurs
Gas explosion, explosion gas impact explosion-proof closed air bag, compress explosion-proof closed air bag, do work to it, to consume gas explosion
Energy, guarantee the closed outside in tunnel safety；When the severe friction that balloon outer saves interlayer and wall causes to rupture,
He can continue to air-tightness at interlayer inner bladder, to keep the airtightness in tunnel to a certain extent, it is ensured that closed and anti-
Quick-fried effect；
Step 3: gas sample data monitoring
In closed period, for convenient for the air themperature of real-time monitoring enclosed interior, gas density, oxygen concentration parameter, by working
Personnel's timing passes through gas sample acquisition pipe and extracts gas sample, using the air parameter of the closed inside in chromatographic tunnel, thus
Further analysis is made to enclosed interior disasters danger；
Step 4: explosion-proof closed air bag recycling
It after closed, breaks seal to closed area, recycles explosion-proof closed air bag at this time；Start letting out for inner bladder first
Air valve carries out inner bladder and loses heart, after, balloon outer successively starts each interlayer from inflation interlayer to quick-fried interlayer direction is met
Gas bleeder valve, complete work of losing heart, will explosion-proof closed airbag fold recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710089635.7A CN106761925B (en) | 2017-02-20 | 2017-02-20 | A kind of explosion-proof closed air bag of coal mine roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710089635.7A CN106761925B (en) | 2017-02-20 | 2017-02-20 | A kind of explosion-proof closed air bag of coal mine roadway |
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| Publication Number | Publication Date |
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| CN106761925A CN106761925A (en) | 2017-05-31 |
| CN106761925B true CN106761925B (en) | 2019-01-29 |
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| CN109827070B (en) * | 2019-03-12 | 2021-01-12 | 西安科技大学 | Experimental device and method for rapidly closing upper corner to prevent gas leakage |
| CN109869179A (en) * | 2019-04-18 | 2019-06-11 | 代连朋 | A kind of negative pressure stabilizing device for gas pumping under a coal mine |
| CN110318806A (en) * | 2019-04-24 | 2019-10-11 | 山东科技大学 | The temporarily isolating wall of double-layer air bag formula for underground coal mine closing wind path tunnel |
| CN110985115B (en) * | 2019-12-25 | 2021-06-15 | 通用技术集团工程设计有限公司 | Filling device for coal mining of coal mine |
| CN110985098B (en) * | 2020-01-02 | 2020-12-15 | 中国矿业大学(北京) | Anti-explosion multi-bag quick-sealing air bag and using method thereof |
| CN112253243B (en) * | 2020-10-21 | 2022-09-27 | 济宁学院 | Automatic buffering system for tunnel collapse or gas explosion impact air wave |
| CN114033449B (en) * | 2021-10-11 | 2024-02-27 | 中煤科工集团沈阳设计研究院有限公司 | End slope coal mining roadway air bag supporting device and method |
| CN113914930B (en) * | 2021-10-29 | 2024-04-05 | 成都未来智隧科技有限公司 | Tunnel smoke and dust treatment facility and system |
| CN116357942B (en) * | 2023-06-01 | 2023-08-01 | 山东智信光电有限公司 | Colliery explosion-proof LED lamp area |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2028894B (en) * | 1978-08-30 | 1982-07-07 | Coal Ind | Fire-limiting inflatable seals |
| CN103306725B (en) * | 2013-06-26 | 2016-12-28 | 安徽理工大学 | The method using coal-face flexible air-bag closure corner |
| CN203717031U (en) * | 2014-02-17 | 2014-07-16 | 李继水 | Quick sealing device for coal mine gobs |
| CN204552823U (en) * | 2015-03-19 | 2015-08-12 | 西安科技大学 | A kind of mine air filling type expansion brattice |
| CN106285779A (en) * | 2016-08-25 | 2017-01-04 | 山西晋煤集团技术研究院有限责任公司 | Underground coal mine environment-friendly type inflated type fire dam |
| CN206539373U (en) * | 2017-02-20 | 2017-10-03 | 中国矿业大学(北京) | A kind of explosion-proof closed air bag of coal mine roadway |
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