CN107269311A - The impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment - Google Patents
The impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment Download PDFInfo
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- CN107269311A CN107269311A CN201710449710.6A CN201710449710A CN107269311A CN 107269311 A CN107269311 A CN 107269311A CN 201710449710 A CN201710449710 A CN 201710449710A CN 107269311 A CN107269311 A CN 107269311A
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- air
- inlet pipe
- air bag
- bag
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000003245 coal Substances 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000007789 gas Substances 0.000 claims abstract description 34
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
- 229920000742 Cotton Polymers 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims abstract description 4
- 239000011521 glass Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims abstract description 3
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 claims abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 10
- 230000035939 shock Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003643 water by type 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
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment, device used in this method includes air bag, fixator and can be with the PLC of Remote, air bag is weaved cotton cloth as enclosed material using Kapton composite high-strength glass, a height of 10m × 3m of length and width × 2.5m；Fixator is connected by fixing band with the upper end of air bag, and fixator is connected with electric wire, and air bag is connected by air inlet pipe with air pump, is connected by water inlet pipe with water pump；Air pump is connected by air intake duct with nitrogen source, and a magnetic valve is separately installed with air inlet pipe, water inlet pipe and air intake duct；The side of air bag is provided with gas pressure sensor, and opposite side is provided with safety valve, and lower end is provided with level sensor, draining valve.The present invention is during the entire process of tunnel rapid sealing is realized, it is possible to achieve far distance automatic controlling, without personnel on site's operation, has the advantages that to form short seal time, efficiency high, air leak rate of air curtain small.
Description
Technical field
The present invention relates to the technical field that coal mine roadway is closed, and in particular to coal mine roadway is long-range certainly under a kind of Disastrous environment
The impact-resisting air-bag formula enclosure method of dynamic control.
Background technology
The danger such as fire, coal dust, bump and gas explosion are the common disasters of mine, once occurring, disaster region is expanded
Exhibition is fast, and coverage is big, directly threatens mine and its life security of underground work personnel, to prevent the expansion of disaster, reduce
Loss, ensures the life security of rescue personnel, it is necessary to fast and effectively set up closed divider wall by easy spontaneous combustion area, pernicious gas
Source or gas accumulation area are isolated.Presently, there are flyash filling rapid sealing, spraying polyurethane foam leak stopping formula it is closed,
It is fast as the gasbag-type rapid sealing of source of the gas, parachute-type rapid sealing, the explosion-proof fire dam of quick colloid etc. using gas cylinder
The closed technology of speed, these technologies are big due to closed formation time length, air leak rate of air curtain, need manual site to grasp during airtight execution
Make, closed high methane flame range has explosion hazard, it is impossible to ensure the life security of staff.
The content of the invention
To solve the above problems, the invention provides a kind of shock resistance of coal mine roadway remote auto control under Disastrous environment
Airbag type closed method, during the entire process of tunnel rapid sealing is realized, it is possible to achieve far distance automatic controlling, without personnel
Execute-in-place, impact-resisting air-bag formula sealing method has the advantages that short tunnel formation seal time, efficiency high, air leak rate of air curtain are small, together
When can bear the shock wave that is produced by blast, prevent the transmission of shock wave.
To achieve the above object, the technical scheme taken of the present invention is：
The impact-resisting air-bag formula locking device of coal mine roadway remote auto control under Disastrous environment, including air bag, fixator
With can be with the PLC of Remote, the air bag be weaved cotton cloth as enclosed material using Kapton composite high-strength glass, long
Wide a height of 10m × 3m × 2.5m；Fixator is connected by fixing band with the upper end of air bag, and fixator is connected with electric wire, air bag
It is connected by air inlet pipe with air pump, is connected by water inlet pipe with water pump；The air pump is connected by air intake duct with nitrogen source, described
A magnetic valve is separately installed with air inlet pipe, water inlet pipe and air intake duct；The side of air bag is provided with gas pressure sensor, separately
Side is provided with safety valve, and lower end is provided with level sensor, draining valve；Fixator, magnetic valve, gas pressure sensor, water
Level sensor, water pump, air pump are connected by electric wire with PLC, and by PLC controls.
Preferably, the air inlet pipe uses DN150 air inlet pipe, and the water inlet pipe uses DN100 water inlet pipes,
Preferably, the magnetic valve uses SH magnetic valves
Preferably, the gas pressure sensor uses PT604Z gas pressure sensors, and the safety valve uses A24Y-
320P safety valves, discharge pressure is 30kPa, it is ensured that air bag internal pressure is not over 30kPa；The level sensor uses XS-
PCM280 level sensors；The water pump uses ISG100-160 water pumps, and power is that 15kW, lift are that 32m, flow are 100m3/
h；The air pump uses MDL55-2 air pumps, and power is that 55kW, pressure at expulsion are that 0.12MPa-0.25MPa, capacity are 21m3/
min。
Preferably, the air inlet pipe, water inlet pipe, electric wire are fixed on the top in tunnel by pipe clamp.
The invention provides a kind of impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment,
Comprise the following steps：
S1, the top that tunnel will be secured the air-bag to by fixator and fixing band, and by any one of claim 1-5 institute
The structure stated completes the assembling of locking device；
S2, send instruction by control centre, PLC is received to be controlled fixator to discharge fixing band to make air bag after instruction by electric wire
One end hang naturally on tunnel ground；
S3, by PLC control air inlet pipe on magnetic valve and air intake duct on magnetic valve make they be in open mode, together
When air pump start, by air inlet pipe to air bag supplying nitrogen, the nitrogen pressure in air bag is monitored by gas pressure sensor；
S4, when the gas pressure in air bag reaches 30kPa, PLC control air pump be stopped, close air inlet pipe and air-breathing
Magnetic valve on pipe, the magnetic valve started on water pump and control water inlet pipe makes water enter in air bag in open mode, and water level is passed
Height of water level in sensor monitoring air bag；
S5, when the gas pressure of air bag is more than 30kPa, safety valve automatically open up release nitrogen enter tunnel in so that drop
Oxygen concentration in low tunnel, makes the gas pressure of air bag be maintained at 30kPa；When height of water level reaches 2.45m, water pump stops
Only work, while the closed electromagnetic valve on water inlet pipe；
After S6, disaster are successfully administered, open water and nitrogen in the draining valve on air bag, discharge air bag to realize air bag
Repeatedly utilize.
The invention has the advantages that：
During the entire process of tunnel rapid sealing is realized, the shock resistance of coal mine roadway remote auto control under Disastrous environment
Airbag type closed method can realize that the progress tunnel leak stopping of remote auto control air bag is closed and resistance to compression is closed, while complete in tunnel
The far distance automatic switching and operation of leak stopping sealing function and resistance to compression sealing function are realized in the case of totally-enclosed, it is existing without personnel
Field operation, gas bag sealing method has the advantages that short tunnel formation seal time, efficiency high, air leak rate of air curtain are small simultaneously, in 5 minutes
Air bag makes air bag internal pressure be maintained at 30kPa full of nitrogen, and the first tunnel of completion is closed, can effectively prevent flame range CO etc. is poisonous to have
The leakage of evil gas and air seal in flame range, and the nitrogen that air bag can be discharged in water filling in air bag enters in tunnel, and then reduces
Oxygen concentration in tunnel, the shock wave produced by blast can be born after air bag is full of water, the transmission of shock wave is prevented,
Effectively shorten fire life, reduce causality loss, it is to avoid the generation of secondary disaster, carried to permanent closed operating personnel
Safety guarantee is supplied.
Brief description of the drawings
Fig. 1 is the structural representation under patent unused state of the present invention.
Fig. 2 is the structural representation under patent use state of the present invention.
In figure：1- tunnels；2- air bags；3- electric wires；4- fixators；5- fixing bands；6- air inlet pipe；7- water inlet pipes；8- pipe clamps；
9- magnetic valves；10- gas pressure sensors；11- safety valves；12- level sensors；13- draining valves；14- water pumps；15- air pumps；
16-PLC；17- air intake ducts；18- nitrogen sources.
Embodiment
In order that objects and advantages of the present invention are more clearly understood, the present invention is carried out with reference to embodiments further
Describe in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
As Figure 1-Figure 2, the embodiments of the invention provide coal mine roadway remote auto control under a kind of Disastrous environment
Impact-resisting air-bag formula locking device, including air bag 2, fixator 4 and polyamides can be used with the PLC16 of Remote, the air bag 2
Imines Film laminated high intensity glass is weaved cotton cloth as enclosed material, a height of 10m × 3m of length and width × 2.5m；The fixator 4 passes through
Fixing band 5 is connected with air bag 2, and fixator is connected with the lower end of electric wire 3, and air bag 2 is connected by air inlet pipe 6 with air pump 15, is passed through
Water inlet pipe 7 is connected with water pump 14；The air pump 15 is connected by air intake duct 17 with nitrogen source 18, the air inlet pipe 6, water inlet pipe 7
With a magnetic valve 9 is separately installed with air intake duct 17；The side of air bag 2 is provided with gas pressure sensor 10, opposite side peace
Equipped with safety valve 11, lower end is provided with level sensor 12, draining valve 13；Described level sensor 12 is to be used to measure air bag
The height of 2 reclaimed waters；Described draining valve 13 can discharge the water and nitrogen of air bag 2 in the case of manual unlocking, in colliery calamity
Do harm to after successfully administering, discharge the water and nitrogen in air bag 2, air bag 2 can be utilized repeatedly；Fixator 4, magnetic valve 9, gas
Pressure sensor 10, level sensor 12, water pump 14, air pump 15 are connected by electric wire 3 with PLC16, and by PLC16
Control.
The air inlet pipe 6 uses DN150 air inlet pipe, and the water inlet pipe 7 uses DN100 water inlet pipes,
The magnetic valve 9 is using SH magnetic valves
The gas pressure sensor 10 uses PT604Z gas pressure sensors, and the safety valve 11 uses A24Y-
320P safety valves, discharge pressure is 30kPa, it is ensured that the internal pressure of air bag 2 is not over 30kPa；The level sensor uses XS-
PCM280 level sensors；The water pump 14 uses ISG100-160 water pumps, and power is that 15kW, lift are that 32m, flow are
100m3/h；The air pump 15 uses MDL55-2 air pumps, and power is that 55kW, pressure at expulsion are 0.12MPa-0.25MPa, capacity
For 21m3/min。
The air inlet pipe 6, water inlet pipe 7, electric wire 3 are fixed on the top in tunnel 1 by pipe clamp 8.
The embodiments of the invention provide a kind of impact-resisting air-bag formula envelope of coal mine roadway remote auto control under Disastrous environment
Method is closed, is comprised the following steps：Air bag 2 is fixed on to the top in tunnel 1 with fixator 4 and fixing band 5, as shown in Figure 1.Make
During with patent of the present invention, instruction is sent by control centre, PLC16 is received after instruction by the control release fixation of fixator 4 of electric wire 3
The one end for making air bag 2 with 5 hangs on the ground of tunnel 1, as shown in Figure 2 naturally.PLC16 controls the electricity in air inlet pipe 6 by electric wire 3
Magnetic valve 9 on magnet valve 9 and air intake duct 17 makes them be in open mode, while PLC16 control air pumps 15 start, passes through air inlet
Pipe 6 monitors the nitrogen pressure in air bag 2 to the supplying nitrogen of air bag 2 by gas pressure sensor 10.When the gas pressure in air bag 2
When power reaches 30kPa, the magnetic valve 9 that PLC16 control air pumps 15 are stopped, closed in air inlet pipe 6 and air intake duct 17 starts water
Magnetic valve 9 on pump 14 and control water inlet pipe 7, which is in open mode, makes water enter in air bag, the monitoring air bag 2 of level sensor 12
In height of water level.When the gas pressure of air bag 2 is more than 30kPa, safety valve 11 automatically opens up release nitrogen and entered in tunnel
And then the oxygen concentration in tunnel is reduced, the gas pressure of air bag 2 is maintained at 30kPa.When height of water level reaches 2.45m
When, water pump 14 is stopped, while the magnetic valve 9 on water inlet pipe 7 is closed.After disaster is successfully administered, it can open on air bag 2
Draining valve 13, water and nitrogen in discharge air bag 2 are repeatedly utilized so as to patent of the present invention.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. the impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment, it is characterised in that including such as
Lower step：
S1, the top that tunnel will be secured the air-bag to by fixator and fixing band, and as described in claim any one of 1-5
Structure completes the assembling of locking device；
S2, send instruction by control centre, PLC is received to be controlled fixator to discharge fixing band to make the one of air bag after instruction by electric wire
End nature hangs on tunnel ground；
S3, by PLC control air inlet pipe on magnetic valve and air intake duct on magnetic valve make they be in open mode, while gas
Pump startup, by air inlet pipe to air bag supplying nitrogen, the nitrogen pressure in air bag is monitored by gas pressure sensor；
S4, when the gas pressure in air bag reaches 30kPa, PLC control air pump be stopped, close in air inlet pipe and air intake duct
Magnetic valve, start water pump and control water inlet pipe on magnetic valve be in open mode make water enter air bag in, level sensor
Monitor the height of water level in air bag；
S5, when the gas pressure of air bag is more than 30kPa, safety valve automatically open up release nitrogen enter tunnel in so that reduce
Oxygen concentration in tunnel, makes the gas pressure of air bag be maintained at 30kPa；When height of water level reaches 2.45m, water pump stops work
Make, while the closed electromagnetic valve on water inlet pipe；
After S6, disaster are successfully administered, open water and nitrogen in the draining valve on air bag, discharge air bag to realize the multiple of air bag
Utilize.
2. the impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment as claimed in claim 1,
It is characterized in that：Device used in the enclosure method includes air bag, fixator and can be with the PLC of Remote, the air bag
Weaved cotton cloth using Kapton composite high-strength glass as enclosed material, a height of 10m × 3m of length and width × 2.5m；Fixator leads to
Fixing band is crossed with the upper end of air bag to be connected, and fixator is connected with electric wire, air bag is connected by air inlet pipe with air pump, passes through water inlet
Pipe is connected with water pump；The air pump is connected by air intake duct with nitrogen source, is pacified respectively on the air inlet pipe, water inlet pipe and air intake duct
Equipped with a magnetic valve；The side of air bag is provided with gas pressure sensor, and opposite side is provided with safety valve, and lower end is provided with water
Level sensor, draining valve；Fixator, magnetic valve, gas pressure sensor, level sensor, water pump, air pump by electric wire with
PLC is connected, and by PLC controls.
3. the impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment as claimed in claim 1,
It is characterized in that：The air inlet pipe uses DN150 air inlet pipe, and the water inlet pipe uses DN100 water inlet pipes.
4. the impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment as claimed in claim 1,
It is characterized in that：The magnetic valve uses SH magnetic valves.
5. the impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment as claimed in claim 1,
It is characterized in that：The gas pressure sensor uses PT604Z gas pressure sensors, and the safety valve uses A24Y-320P
Safety valve, discharge pressure is 30kPa, it is ensured that air bag internal pressure is not over 30kPa；The level sensor uses XS-PCM280
Level sensor；The water pump uses ISG100-160 water pumps, and power is that 15kW, lift are that 32m, flow are 100m3/h；It is described
Air pump uses MDL55-2 air pumps, and power is that 55kW, pressure at expulsion are that 0.12MPa-0.25MPa, capacity are 21m3/min。
6. the impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment as claimed in claim 1,
It is characterized in that：The air inlet pipe, water inlet pipe, electric wire are fixed on the top in tunnel by pipe clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710449710.6A CN107269311A (en) | 2017-06-09 | 2017-06-09 | The impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710449710.6A CN107269311A (en) | 2017-06-09 | 2017-06-09 | The impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107269311A true CN107269311A (en) | 2017-10-20 |
Family
ID=60067646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710449710.6A Withdrawn CN107269311A (en) | 2017-06-09 | 2017-06-09 | The impact-resisting air-bag formula enclosure method of coal mine roadway remote auto control under Disastrous environment |
Country Status (1)
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| CN (1) | CN107269311A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268069A (en) * | 2018-11-19 | 2019-01-25 | 西安科技大学 | A kind of catastrophe region preset umbrella wing formula rapid sealing device and sealing method |
| CN110410147A (en) * | 2019-07-20 | 2019-11-05 | 宿州市金鼎安全技术股份有限公司 | A kind of mine city system based on geographical information technology |
| CN110763726A (en) * | 2019-11-15 | 2020-02-07 | 中南大学 | Dust explosion parameter experiment method |
| CN110821562A (en) * | 2018-08-07 | 2020-02-21 | 栗磊 | Stacked bag type rapid tunnel closing system and using method thereof |
| CN112253241A (en) * | 2020-10-21 | 2021-01-22 | 济宁学院 | Mining goaf collapse impact air wave automatic buffering protection system |
| CN112780301A (en) * | 2021-01-13 | 2021-05-11 | 温州职业技术学院 | Mine structural strength and emergency support enhancement system and construction method thereof |
| 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 |
-
2017
- 2017-06-09 CN CN201710449710.6A patent/CN107269311A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821562A (en) * | 2018-08-07 | 2020-02-21 | 栗磊 | Stacked bag type rapid tunnel closing system and using method thereof |
| CN109268069A (en) * | 2018-11-19 | 2019-01-25 | 西安科技大学 | A kind of catastrophe region preset umbrella wing formula rapid sealing device and sealing method |
| CN110410147A (en) * | 2019-07-20 | 2019-11-05 | 宿州市金鼎安全技术股份有限公司 | A kind of mine city system based on geographical information technology |
| CN110763726A (en) * | 2019-11-15 | 2020-02-07 | 中南大学 | Dust explosion parameter experiment method |
| CN110763726B (en) * | 2019-11-15 | 2021-06-01 | 中南大学 | Dust explosion parameter experiment method |
| CN112253241A (en) * | 2020-10-21 | 2021-01-22 | 济宁学院 | Mining goaf collapse impact air wave automatic buffering protection system |
| CN112780301A (en) * | 2021-01-13 | 2021-05-11 | 温州职业技术学院 | Mine structural strength and emergency support enhancement system and construction method thereof |
| 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 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20171020 |