CN106761925A - 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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- CN106761925A CN106761925A CN201710089635.7A CN201710089635A CN106761925A CN 106761925 A CN106761925 A CN 106761925A CN 201710089635 A CN201710089635 A CN 201710089635A CN 106761925 A CN106761925 A CN 106761925A
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- 239000003245 coal Substances 0.000 title claims abstract description 15
- 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 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 57
- 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
- 238000005273 aeration Methods 0.000 claims description 7
- 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
- 238000000605 extraction Methods 0.000 claims description 5
- 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
- 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
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 210000003709 heart valve Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000505 pernicious effect Effects 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 its structure mainly includes：Inner bladder, balloon outer, gas sample acquisition pipe.Closed air bag is using 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 ezpenditure of confined space inner side blast 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 technique that inside and outside air bag is inflated simultaneously, save manpower and time, are conducive to disaster relief personnel to complete airtight execution as early as possible and withdraw, safe and reliable.Additionally, during using closed gas bag sealing, the gas sample acquisition work of enclosed interior can be carried out, be conducive to analyzing the change of mine the condition of a disaster in time.
Description
Technical field
The invention belongs to prevention and control of mine disaster technical field, and in particular to a kind of explosion-proof closed air bag of coal mine roadway.
Background technology
In colliery industry production process, gas and fire are main natural calamities, and the loss caused to colliery industry is not
Can estimate.During coal mine gas disaster and the fire disaster relief, it is very common disaster relief technological means that tunnel is closed.By lane
Road is closed, intercepts air flow and heat exchange inside and outside closed point, prevents fire or gas explosion wider to mine
Inside spread, so that it is guaranteed that being smoothed out for disaster relief work, casualty loss is controlled in minimum.The closed skill in the existing tunnel of China
Art, predominantly sandstone fill explosion-proof closed means, and its construction technology is cumbersome, the engineering time is long, are unfavorable for that the rapid of personnel is removed
From the theory with emergency escape is not inconsistent.And existing gas bag sealing technology generally using individual layer air bag structure, its low intensity,
It is mostly used for during the mine fire disaster relief, blocks the flowing of pernicious gas, and cannot be explosion-proof.Therefore, this invention address that grinding
Send out the explosion-proof closed air bag of coal mine roadway a kind of, solve the defect that the closed technology in existing tunnel is present, preferably ensure that mine is rescued
Being smoothed out for calamity process, promotes the safe operation of colliery industry.
The content of the invention
The present invention discloses a kind of explosion-proof closed air bag of coal mine roadway, and its configuration is approximately a cylindrical rubber air bag,
Different according to specification, its length is 4~6m, and cross-sectional area is 8~14m3, its structure mainly includes：Inner bladder, outer layer gas
Capsule, gas sample acquisition pipe.
The inner bladder is located inside balloon outer, and inside and outside two-layer air bag is connected by multigroup 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 referred to as meeting quick-fried interlayer, is filled positioned at air bag
The interlayer at gas end is referred to as inflating interlayer, and remaining some interlayer of middle part are referred to as buffering interlayer.
Quick-fried interlayer, inner bladder, the inflation interlayer exterior material of meeting is made by high-strength nitrile butadiene rubber, with intensity
Height, impact resistance, resistance to elevated temperatures.Buffering interlayer exterior material, diaphragm of rubber are made by synthesizing butadiene rubber, with wear-resisting, bullet
Good, the fire-retardant performance of property.
2 spaced valves are installed between the balloon outer adjacent spacers, 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 filled to extraction one outside closed air bag
Airway, connects internal layer charge valve, for the inflation of inner bladder.Inner bladder and each interlayer of balloon outer are mounted on losing heart
Valve, inner bladder connects internal layer charge valve to a discouraged conduit is drawn outside closed air bag, for losing heart for inner bladder.
The gas sample acquisition pipe is metal bellows material, flexible, and with some strength, the pipe is adhered to by sling
In outside balloon outer, after airbag aeration, gas sample acquisition pipe is sandwiched between wall and gasbag outer surface, and ensure that it is managed
The connectedness on road.
The operating air pressure of the exterior airbag is conducive to the flexible and change that air bag is overall less than the operating air pressure of inner balloon
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, it is characterised in that main operational steps are as follows：
Step one, preparation
With reference to air bag specification, drift section actual conditions, it is determined that the gas volume of required injection, and inner bladder work
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 debris in closed place, and air bag is spread out, is laid in tunnel ground.
Step 2, airbag aeration
Ectonexine air bag is inflated simultaneously, such that it is able to greatly save the operating time.
The charge operation process of balloon outer is：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 elasticity for helping synthesis butadiene rubber good is brought into close contact with wall.
The charge operation process of inner bladder is：With loading line connect high-pressure nitrogen bottle and internal layer charge valve, directly by
Internal layer charge valve is by inflating catheter for inner bladder is inflated.
After the completion of inflation, high-pressure nitrogen bottle and loading line are pulled down, withdraw from personnel and auxiliary equipment.When the closed inner side in tunnel
Generation gas explosion, explosion gas impacts closed air bag, and compressing gasbag does work to it, so as to consume the energy of gas explosion, protects
Demonstrate,prove the safety of the closed outside in tunnel.When balloon outer section interlayer and the severe friction of wall cause rupture, in other interlayers
Layer air bag can continue to air-tightness, so as to keep the seal 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 ease of parameters such as the air themperature of real-time monitoring enclosed interior, gas density, oxygen concentrations,
Gas sample is extracted by gas sample acquisition pipe by staff's timing, the air using the closed inner side in chromatographic tunnel is joined
Number, so as to make further analysis to enclosed interior disasters danger.
Step 4, air bag are reclaimed
After closed end, closed area is broken seal, now reclaim closed air bag.Start letting out for inner bladder first
Air valve, carries out inner bladder and loses heart, and after terminating, balloon outer, to quick-fried interlayer direction is met, starts each interlayer successively from inflation interlayer
Gas bleeder valve, complete lose heart work, by closed airbag fold reclaim.
The present invention, to the form of air bag compressed action, makes the energy ezpenditure of blast totally, it is ensured that tunnel using explosion gas
The safety of closed outer space.Compared to the closed technology in existing tunnel, main useful achievement of the invention is：The colliery colliery
The explosion-proof closed air bag in tunnel fills explosion-proof closed means compared to traditional sandstone, and technique is simple and easy to operate, and inside and outside air bag fills simultaneously
Gas, saves manpower and time, is conducive to disaster relief personnel to complete airtight execution as early as possible and withdraw, and has ensured the life peace of personnel
Entirely.Closed airbag structure is using inside and outside double-layer air bag structure, and balloon outer is divided into multiple interlayers, safe and reliable.Additionally, making
During with closed gas bag sealing, the gas sample acquisition work of enclosed interior can be carried out, be conducive to analyzing the condition of a disaster change feelings in time.
Brief description of the drawings
Below in conjunction with the accompanying drawings, 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 reference numerals：
In figure：1st, quick-fried interlayer is met, 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, lose heart conduit, 14, inner bladder
Specific embodiment
The invention provides a kind of explosion-proof closed air bag of coal mine roadway, below by drawings and Examples, with certain ore deposit 2201
Technology application during working face extraction is engineering background, and technical scheme is 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, its configuration is approximately a cylindrical rubber air bag, according to specification not
Together, its length is 4~6m, and cross-sectional area is 8~14m2, its structure mainly includes：Inner bladder 14, balloon outer, gas sample are adopted
Collector 10.With reference to 2201 return airway actual sizes, from cross-sectional area 10m2, length is the explosion-proof closed air bag of 6m.
The inner bladder 14 is located inside balloon outer, and inside and outside two-layer air bag is connected by multigroup 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 referred to as meeting quick-fried interlayer 1, is filled positioned at air bag
The interlayer at gas end is referred to as inflating interlayer 3, and remaining some interlayer of middle part are referred to as buffering interlayer 2.Meet quick-fried interlayer 1, inner bladder 14, fill
The exterior material of air-casing 3 is made by high-strength nitrile butadiene rubber, with intensity is high, impact resistance, resistance to elevated temperatures.Outside buffering interlayer 2
Portion's material, diaphragm of rubber 9 are made by synthesizing butadiene rubber, with performance wear-resisting, that elasticity is good, fire-retardant.
2 spaced valves 8 are installed between balloon outer adjacent spacers, two charge valves is installed in inflation interlayer 3 tail end, respectively
It is outer layer charge valve 4 and internal layer charge valve 12, above-mentioned each valve is check valve.Inner bladder 14 is to extraction one outside closed air bag
Inflating catheter 11, connection internal layer charge valve 12, for the inflation of inner bladder.Inner bladder 14 and each interlayer of balloon outer are pacified
Equipped with gas bleeder valve, inner bladder 14 connects internal layer charge valve 12, for internal layer to a discouraged conduit 13 is drawn outside closed air bag
Air bag lose heart.
The gas sample acquisition pipe 10 is metal bellows material, flexible, and with some strength, the pipe is attached by sling
In outside balloon outer, after airbag aeration, gas sample acquisition pipe 10 is sandwiched between wall and gasbag outer surface, and be ensure that
The connectedness of its pipeline.
The operating air pressure of the exterior airbag is conducive to the flexible and change that air bag is overall less than the operating air pressure of inner balloon
Shape, and then can be closely sturdy with wall, it is ensured that obturation effect.
During certain working face extraction of ore deposit 2201, face gas concentration seriously transfinites, and according to associated safety code, it is right to plan
The working face is closed, closed together with air return way respectively construction in working face haulage gate, determines to be proposed using the present invention
The explosion-proof closed air bag of coal mine roadway.Technology 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 and designed by electric locomotive
Closed position, suitably clear up the debris in closed place, air bag is spread out, be laid in tunnel ground.
Inside and outside airbag aeration is each to be operated simultaneously by two staff, and the charge operation process of balloon outer is：With inflation
Pipeline connects high-pressure nitrogen bottle and outer layer charge valve, and outer layer gas is followed successively by by the spaced valve 8 between outer layer charge valve 4 and interlayer
Each section interlayer inflation of capsule.After inflation, balloon outer can closely be pasted by the good elasticity of synthesis butadiene rubber with wall
Close.The charge operation process of inner bladder 14 is：High-pressure nitrogen bottle and internal layer charge valve 12 are connected with loading line, directly by interior
Layer charge valve 12 is by inflating catheter 11 for inner bladder 14 is inflated.
When the closed inner side in tunnel occurs gas explosion, explosion gas impacts closed air bag, and compressing gasbag does work to it, from
And consume the energy of gas explosion, it is ensured that the safety of the closed outside in tunnel.When balloon outer section interlayer is violent with wall
Friction causes rupture, and other interlayer inner bladders 14 can continue to air-tightness, so as 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 pulled down, withdraw from personnel and auxiliary equipment.In closed period, it is
It is easy to the parameters such as air themperature, gas density, the oxygen concentration of real-time monitoring enclosed interior, is determined in air return way by staff
When gas sample is extracted by gas sample acquisition pipe 10, using the air parameter of the closed inner side in chromatographic tunnel, so as to close
Close internal disasters danger and make further analysis.
According to underground monitoring data, after closed 50 days, confined space inside gas density and index of correlation gas concentration are extensive
It is multiple to decide and closed area is broken seal to level of security, now reclaim closed air bag.Start internal layer gas bleeder valve 5 first, enter
Row inner bladder is lost heart, and after terminating, balloon outer, to the direction of quick-fried interlayer 1 is met, starts losing heart for each interlayer successively from inflation interlayer 3
Valve, completes work of losing heart, and closed airbag fold is reclaimed.
Claims (2)
1. the present invention discloses a kind of explosion-proof closed air bag of coal mine roadway, and its configuration is approximately a cylindrical rubber air bag, presses
Different according to specification, its length is 4~6m, and cross-sectional area is 8~14m3, its structure mainly includes：Inner bladder, balloon outer,
Gas sample acquisition pipe；
The inner bladder is located inside balloon outer, and inside and outside two-layer air bag is connected by multigroup 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 air bag is referred to as meeting quick-fried interlayer, positioned at airbag aeration end
Interlayer be referred to as inflate interlayer, remaining some interlayer of middle part be referred to as buffer interlayer；
Quick-fried interlayer, inner bladder, inflation interlayer exterior material is met to be made by high-strength nitrile butadiene rubber, with intensity is high, impact resistance,
Resistance to elevated temperatures；
Buffering interlayer exterior material, diaphragm of rubber are made by synthesizing butadiene rubber, with performance wear-resisting, that elasticity is good, fire-retardant；
2 spaced valves are installed between balloon outer adjacent spacers, two charge valves, respectively outer layer are installed in inflation interlayer tail end
Charge valve and internal layer charge valve, above-mentioned each valve are check valve.Inner bladder connects to an inflating catheter is drawn outside closed air bag
Internal layer charge valve is connect, for the inflation of inner bladder；
Inner bladder and each interlayer of balloon outer are mounted on gas bleeder valve, and inner bladder is led to extraction one outside closed air bag is discouraged
Pipe, connects internal layer charge valve, for losing heart for inner bladder；
The gas sample acquisition pipe is metal bellows material, flexible, and with some strength, the pipe is attached to outer by sling
Outside layer air bag, after airbag aeration, gas sample acquisition pipe is sandwiched between wall and gasbag outer surface, and ensure that its pipeline
It is connective；
The operating air pressure of the exterior airbag is conducive to the flexible and deformation that air bag is overall less than the operating air pressure of inner balloon,
And then can be closely sturdy with wall, it is ensured that obturation effect.
2. the explosion-proof closed air bag of a kind of coal mine roadway, it is characterised in that main operational steps are as follows：
Step one, preparation
With reference to air bag specification, drift section actual conditions, it is determined that the gas volume of required injection, and inner bladder work pressure
Force value P1With the working pressure P of balloon outer2.According to equation of gaseous state, high pressure bottled nitrogen specification and parameter are calculated, selected
The high-pressure nitrogen bottle of appropriate size.Explosion-proof closed air bag, high-pressure nitrogen bottle, loading line are transported to tunnel and designed by electric locomotive
Closed position, suitably clear up the debris in closed place, air bag is spread out, be laid in tunnel ground；
Step 2, airbag aeration
The charge operation process of balloon outer is：High-pressure nitrogen bottle and outer layer charge valve are connected with loading line, is 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 brought into close contact with wall into the good elasticity of butadiene rubber；
The charge operation process of inner bladder is：High-pressure nitrogen bottle and internal layer charge valve are connected with loading line, directly by internal layer
Charge valve is by inflating catheter for inner bladder is inflated；
After the completion of inflation, high-pressure nitrogen bottle and loading line are pulled down, withdraw from personnel and auxiliary equipment.When the closed inner side in tunnel occurs
Gas explosion, explosion gas impacts closed air bag, and compressing gasbag does work to it, so as to consume the energy of gas explosion, it is ensured that lane
The safety of the closed outside in road.When balloon outer section interlayer and the severe friction of wall cause rupture, other interlayer internal layer gas
Capsule can continue to air-tightness, so as to keep the seal 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 ease of parameters such as the air themperature of real-time monitoring enclosed interior, gas density, oxygen concentrations, by work
Make personnel's timing and gas sample is extracted by gas sample acquisition pipe, using the air parameter of the closed inner side in chromatographic tunnel, from
And further analysis is made to enclosed interior disasters danger；
Step 4, air bag are reclaimed
After closed end, closed area is broken seal, now reclaim closed air bag.Start losing heart for inner bladder first
Valve, carries out inner bladder and loses heart, and after terminating, balloon outer, to quick-fried interlayer direction is met, starts each interlayer successively from inflation interlayer
Gas bleeder valve, completes work of losing heart, and closed airbag fold is reclaimed.
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 |
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| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761925A true CN106761925A (en) | 2017-05-31 |
| CN106761925B CN106761925B (en) | 2019-01-29 |
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| CN201710089635.7A Expired - Fee Related CN106761925B (en) | 2017-02-20 | 2017-02-20 | A kind of explosion-proof closed air bag of coal mine roadway |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827070A (en) * | 2019-03-12 | 2019-05-31 | 西安科技大学 | A kind of rapid closing upper corner prevents the experimental provision and method of 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 |
| CN110985115A (en) * | 2019-12-25 | 2020-04-10 | 通用技术集团工程设计有限公司 | Filling device for coal mining of coal mine |
| CN110985098A (en) * | 2020-01-02 | 2020-04-10 | 中国矿业大学(北京) | Anti-explosion multi-bag quick-sealing air bag and using method thereof |
| CN112253243A (en) * | 2020-10-21 | 2021-01-22 | 济宁学院 | Automatic buffering system for tunnel collapse or gas explosion impact air wave |
| CN113914930A (en) * | 2021-10-29 | 2022-01-11 | 成都未来智隧科技有限公司 | Tunnel smoke dust treatment equipment and system |
| CN114033449A (en) * | 2021-10-11 | 2022-02-11 | 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 |
| CN116357942A (en) * | 2023-06-01 | 2023-06-30 | 山东智信光电有限公司 | Colliery explosion-proof LED lamp area |
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| CN103306725A (en) * | 2013-06-26 | 2013-09-18 | 安徽理工大学 | Flexible airbags for coal working face and method adopting same to block off corners |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827070A (en) * | 2019-03-12 | 2019-05-31 | 西安科技大学 | A kind of rapid closing upper corner prevents the experimental provision and method of 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 |
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| CN112253243A (en) * | 2020-10-21 | 2021-01-22 | 济宁学院 | Automatic buffering system for tunnel collapse or gas explosion impact air wave |
| CN112253243B (en) * | 2020-10-21 | 2022-09-27 | 济宁学院 | Automatic buffering system for tunnel collapse or gas explosion impact air wave |
| CN114033449A (en) * | 2021-10-11 | 2022-02-11 | 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 |
| 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 |
| CN113914930A (en) * | 2021-10-29 | 2022-01-11 | 成都未来智隧科技有限公司 | Tunnel smoke dust treatment equipment and system |
| 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 |
| CN116357942A (en) * | 2023-06-01 | 2023-06-30 | 山东智信光电有限公司 | Colliery explosion-proof LED lamp area |
| CN116357942B (en) * | 2023-06-01 | 2023-08-01 | 山东智信光电有限公司 | Colliery explosion-proof LED lamp area |
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| CN106761925B (en) | 2019-01-29 |
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