CN109184781A - Mine district gas drainage device - Google Patents
Mine district gas drainage device Download PDFInfo
- Publication number
- CN109184781A CN109184781A CN201811068989.4A CN201811068989A CN109184781A CN 109184781 A CN109184781 A CN 109184781A CN 201811068989 A CN201811068989 A CN 201811068989A CN 109184781 A CN109184781 A CN 109184781A
- Authority
- CN
- China
- Prior art keywords
- extraction
- gas
- drainage
- drainage tube
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention discloses mine district gas drainage devices, the present invention passes through setting high frequency oscillator, the thorough extraction to methane gas may be implemented, promote the flowing of methane gas, when carrying out extraction, installation positioning is carried out to drainage tube first with blocking component, and it blocks, guarantee preferable leakproofness, later, using extraction pump and control control valve, extraction first is carried out to gas, after drainage holes reache a certain level the extraction of gas, it is vibrated using the high frequency oscillator, continue extraction after a certain period of time, the impulse charge component is opened again, pour protective gas in a pulsed fashion into coal seam, pulse pour certain time make drilling in reach certain pressure after, continue to carry out extraction to the gas in drilling, in this way, promote the circulation of methane gas using high frequency oscillator, guarantee extracting result, recycle pulse Remaining less a part of gas is swapped circulation by the mode of inflation, is realized to the thorough extraction of methane gas.
Description
Technical field
The present invention relates to mine district gas drainage devices, belong to coal mine gas drainage equipment technical field.
Background technique
Currently, carrying out needing to carry out extraction to the gas in coal mine coal seam in recovery process to coal mine, to prevent watt
There is accident after drawing off in this.Current gas picking device to gas carry out extraction when, typically only by suction function to watt
This is extracted, and needs to be arranged drainage tube when extracting, and current drainage tube is usually to protrude into drilling, then utilizes hole sealing agent
Sealing of hole is carried out, the leakproofness of negative pressure extraction later, this extraction way drainage tube is bad, and extracting result is poor, moreover, being hidden in coal
Gas in layer is difficult to discharge completely, causes gas drainage to be not thorough, influences the effect of gas drainage.
The present invention improves the effect and extraction of gas drainage in view of the above problems, offer mine district gas drainage device
Completeness and safety.
Summary of the invention
To achieve the above object, the invention provides the following technical scheme: mine district gas drainage device comprising extraction
Component, blocking component, drainage tube and porous inner support component, wherein along its length direction spaced array on the drainage tube
Multiple porous inner support components are provided with, the drainage tube protrudes into the extraction borehole to extraction coal seam, the orifice end of the drilling
The blocking component is provided between the drainage tube, the extraction component is connected to the drainage tube so as to in drilling
Gas carries out extraction, is provided with high frequency oscillator in the inner support component.
Further, preferably, the porous inner support component uses there is porous frame structure to be made, the extraction
The aeration aperture of arrangement parallel with the center drainage holes of the drainage tube, the extraction are additionally provided on pipe along its length direction
The position that the porous inner support component is installed on pipe is provided with the multiple inflating ports being connected to aeration aperture, the aeration aperture and outer
The impulse charge component in portion is connected to, after drainage holes reache a certain level the extraction of gas, using the high frequency oscillator into
Row oscillation, continues extraction after a certain period of time, then open the impulse charge component, pours protection in a pulsed fashion into coal seam
Gas, pulse pour certain time make drilling in reach certain pressure after, continue in drilling gas carry out extraction.
Further, preferably, being provided with the groove protruded into along drainage tube radial direction, institute at the inflating port position
It states and is provided with supporting network girth sheets on groove, the porous inner support modular support is located on the supporting network girth sheets.
Further, preferably, being provided with the drainage holes with extraction tube hub on the inner wall of the inner terminal of the drainage tube
The interior extraction mouth being connected, direction is provided with multiple extraction mouths connection components axially along in the drainage tube, wherein described
It includes lateral extraction head and longitudinal extraction head that extraction mouth, which is connected to component, and the transverse direction extraction head and longitudinal extraction head are each along described
The radial direction of drainage tube extends, and the extraction pipe outer wall, institute are stretched out in the outer end of the lateral extraction head and longitudinal extraction head
It states the part that lateral extraction head and longitudinal extraction head are located in the drainage holes and is provided with connection drainage holes and the lateral extraction
The hole of head and longitudinal extraction head.
Further, preferably, the blocking component includes retaining ring, steel rim of spring, elastic sealing gasket and accommodates limit arc
Circle, wherein the position that the end of the drainage tube corresponds to the drilling end is fixedly installed spaced apart two groups of retaining rings, institute
The both ends of steel rim of spring are stated against being fixed between two groups of retaining rings, are provided between the steel rim of spring and the extraction pipe outer wall
Cavity one, the diameter of the retaining ring are adapted with the diameter of the drilling, towards the drill hole inner wall on the steel rim of spring
Side is fixedly installed elastic sealing gasket, the sky surrounded between the elastic sealing gasket and steel rim of spring and the drill hole inner wall
The receiving spacing collar being connected on the steel rim of spring is provided on chamber two, expansion packet is fixed on the receiving spacing collar, institute
The slip casting plugging hole for being provided on drainage tube and being connected to the cavity one is stated, when carrying out extraction closure to drainage holes, utilizes note
Starch plugging hole slip casting and realize and the slip casting of steel rim of spring is expanded, meanwhile, when the expansion packet expands, using elastic sealing gasket and
Swelling agent is fixed and blocks to drainage tube.
Further, preferably, being provided with convex on the drainage tube to be provided with positioning plate outside the drilling of extraction
Shoulder, the positioning convex shoulder are positioned on the positioning plate.
Further, preferably, the outer end of the drainage tube is provided with extraction connector positioning plate, the extraction connector is fixed
Extraction joint sealing on the plate of position protrudes into the drainage holes of the drainage tube, and extraction component is connected to the drainage holes.
Further, preferably, the extraction component includes extraction pump and extraction gas storage tanks, wherein the extraction
It is additionally provided with control valve between pump and the extraction connector, connects extraction gas storage tanks in the extraction pump.
Further, described to fill preferably, the inflatable component includes inflator pump, protective gas storage tank and control valve
One end of air pump is connected to protective gas storage tank, and the other end of the inflator pump is connected to the extraction by the control valve
Aeration aperture on pipe.
Further, preferably, further including controller, the controller control the extraction component, high frequency oscillator and
The movement of inflatable component.
Compared with prior art, the beneficial effects of the present invention are:
Drainage device of the invention can greatly improve extraction degree and completeness to gas, by the way that the higher-order of oscillation is arranged
Device may be implemented the thorough extraction to methane gas, promote the flowing of methane gas, when carrying out extraction, first with closure group
Part carries out installation positioning to drainage tube, and blocks, and guarantees preferable leakproofness, later, using extraction pump and controls control valve,
First extraction is carried out to gas to shake after drainage holes reache a certain level the extraction of gas using the high frequency oscillator
It swings, continues extraction after a certain period of time, then open the impulse charge component, pour protection gas in a pulsed fashion into coal seam
Body, pulse pour certain time make drilling in reach certain pressure after, continue in drilling gas carry out extraction, in this way,
Using high frequency oscillator promote methane gas circulation, guarantee extracting result, recycle the mode of impulse charge by it is remaining compared with
Few a part of gas swaps circulation, promotes gas trafficability performance, realizes to the thorough extraction of methane gas, in addition, this
The plugging effect of invention is preferable, has preferable shock resistance and anti-loosening property.
Detailed description of the invention
Fig. 1 is the overall structure diagram of gas drainage device in mine district of the present invention；
Fig. 2 is the drainage tube inner end structure schematic diagram of gas drainage device in mine district of the present invention；
Fig. 3 is structural schematic diagram at the porous inner support component of gas drainage device in mine district of the present invention；
Fig. 4 is the blocking component structural schematic diagram of gas drainage device in mine district of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution: mine district gas drainage device comprising extraction group
Part, blocking component 8, drainage tube 9 and porous inner support component 12, wherein along its length direction interval battle array on the drainage tube 9
Column are provided with multiple porous inner support components 12, and the drainage tube 9 protrudes into the extraction borehole 13 to extraction coal seam 11, the drilling
The blocking component 8 is provided between 13 orifice end and the drainage tube 9, the extraction component is connected by positioning component 7
To the drainage tube 9 to carry out extraction to the gas in drilling, high frequency oscillator 20 is provided in the inner support component 12.
In the present embodiment, the porous inner support component 12 is made of with porous 21 structure of frame, the pumping
Adopt the aeration aperture 18 for being additionally provided with arrangement parallel with the center drainage holes of the drainage tube on pipe 9 along its length direction, institute
It states and the position of the porous inner support component is installed on drainage tube 9 is provided with the multiple inflating ports 19 being connected to aeration aperture, it is described
Aeration aperture 18 is connected to external impulse charge component, after drainage holes reache a certain level the extraction of gas, using described
High frequency oscillator 20 is vibrated, and continues extraction after a certain period of time, then open the impulse charge component, into coal seam with pulse
Mode pour protective gas, pulse is poured certain time and is made after reaching certain pressure in drilling, continues to the gas in drilling
Body carries out extraction.
As preferred embodiment, it is provided with the groove protruded into along drainage tube radial direction at the inflating port position,
Supporting network girth sheets 17 is provided on the groove, the porous inner support modular support is located on the supporting network girth sheets 17.
As preferred embodiment, the extraction with extraction tube hub is provided on the inner wall of the inner terminal of the drainage tube 9
The interior extraction mouth 14 that hole is connected, direction is provided with multiple extraction mouths connection components axially along in the drainage tube, wherein
The extraction mouth connection component includes lateral extraction head 15 and longitudinal extraction head 16, the transverse direction extraction head 15 and longitudinal extraction head
16 extend each along the radial direction of the drainage tube, and the pumping is stretched out in the outer end of the lateral extraction head and longitudinal extraction head
Pipe outer wall is adopted, the transverse direction extraction head and longitudinal extraction head are located at the part in the drainage holes and are provided with connection drainage holes and institute
State the hole of lateral extraction head and longitudinal extraction head.
As preferred embodiment, the blocking component includes retaining ring 30, steel rim of spring 26, elastic sealing gasket 32 and accommodates
Limit loop-drive 25, wherein the position that the end of the drainage tube 9 corresponds to the drilling end is fixedly installed spaced apart two
Group retaining ring 30, the both ends of the steel rim of spring 26 are against being fixed between two groups of retaining rings 30, the steel rim of spring 26 and the pumping
It adopts and is provided with cavity one between pipe outer wall, the diameter of the retaining ring 30 is adapted with the diameter of the drilling, the steel rim of spring
On towards the side of the drill hole inner wall be fixedly installed elastic sealing gasket 32, the elastic sealing gasket 32 and steel rim of spring and
The receiving spacing collar 25 being connected on the steel rim of spring, expansion packet are provided on the cavity two surrounded between the drill hole inner wall
It is fixed on the receiving spacing collar 25, the slip casting plugging hole 27 being connected to the cavity one is provided on the drainage tube,
When carrying out extraction closure to drainage holes, realize that the slip casting to steel rim of spring expands using slip casting plugging hole slip casting, meanwhile, it is described swollen
When swollen packet expands, drainage tube is fixed and is blocked using elastic sealing gasket and swelling agent.
As preferred embodiment, positioning component includes positioning plate, positioning convex shoulder and extraction connector positioning plate, to extraction
Drilling is external to be provided with positioning plate 31, and positioning convex shoulder 29 is provided on the drainage tube, and the positioning convex shoulder 29 is positioned at described
On positioning plate 31.The outer end of the drainage tube is provided with extraction connector positioning plate 28, on the extraction connector positioning plate 28
What extraction connector 22 sealed protrudes into the drainage holes of the drainage tube, and extraction component is connected to the drainage holes 23.The extraction
Component includes extraction pump and extraction gas storage tanks 1, wherein is additionally provided between the extraction pump 5 and the extraction connector 22
Control valve 6 connects extraction gas storage tanks 1 in the extraction pump.The inflatable component includes inflator pump 4, protective gas storage
Tank 2 and control valve 6, one end of the inflator pump 4 are connected to protective gas storage tank 2, and the other end of the inflator pump 4 passes through institute
The aeration aperture that control valve 6 is connected on the drainage tube is stated, pressure gauge 3 is set between inflator pump 4 and protective gas storage tank 2.
As preferred embodiment, the invention also includes controller, the controller controls the extraction component, high frequency vibrating
Swing the movement of device and inflatable component.
Drainage device of the invention can greatly improve extraction degree and completeness to gas, by the way that high frequency is arranged
Oscillator may be implemented the thorough extraction to methane gas, promote the flowing of methane gas, when carrying out extraction, first with envelope
Blocking component carries out installation positioning to drainage tube, and blocks, and guarantees preferable leakproofness, later, using extraction pump and controls
Valve processed, first to gas carry out extraction, after drainage holes reache a certain level the extraction of gas, using the high frequency oscillator into
Row oscillation, continues extraction after a certain period of time, then open the impulse charge component, pours protection in a pulsed fashion into coal seam
Gas, pulse pour certain time make drilling in reach certain pressure after, continue in drilling gas carry out extraction, this
Sample promotes the circulation of methane gas using high frequency oscillator, guarantees extracting result, recycles the mode of impulse charge will be remaining
Less a part of gas swaps circulation, promotes gas trafficability performance, realizes to the thorough extraction of methane gas, in addition,
Plugging effect of the invention is preferable, has preferable shock resistance and anti-loosening property.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. mine district gas drainage device, which is characterized in that it includes extraction component, blocking component, drainage tube and porous interior
Support component, wherein its length direction spaced array is provided with multiple porous inner support components on the drainage tube, it is described
Drainage tube protrudes into the extraction borehole to extraction coal seam, and the closure is provided between the orifice end of the drilling and the drainage tube
Component, the extraction component are connected to the drainage tube to carry out extraction to the gas in drilling, in the inner support component
It is provided with high frequency oscillator.
2. gas drainage device in mine district according to claim 1, it is characterised in that: the porous inner support component is adopted
It is made of with porous frame structure, is additionally provided with the center with the drainage tube along its length direction on the drainage tube
The aeration aperture of the parallel arrangement of drainage holes, the position that the porous inner support component is installed on the drainage tube are provided with and inflate
Multiple inflating ports of hole connection, the aeration aperture is connected to external impulse charge component, when drainage holes reach the extraction of gas
It after to a certain extent, is vibrated using the high frequency oscillator, continues extraction after a certain period of time, then open the impulse charge
Component, pours protective gas into coal seam in a pulsed fashion, and pulse pours certain time and to reach certain pressure in drilling
Afterwards, continue to carry out extraction to the gas in drilling.
3. gas drainage device in mine district according to claim 1, it is characterised in that: be arranged at the inflating port position
There is the groove protruded into along drainage tube radial direction, supporting network girth sheets, the porous inner support component are provided on the groove
Support is located on the supporting network girth sheets.
4. gas drainage device in mine district according to claim 1, it is characterised in that: the inner terminal of the drainage tube
It is provided with the interior extraction mouth being connected with the drainage holes of extraction tube hub on inner wall, direction is set axially along in the drainage tube
It is equipped with multiple extraction mouth connection components, wherein the extraction mouth connection component includes lateral extraction head and longitudinal extraction head, described
Lateral extraction head and longitudinal extraction head extend each along the radial direction of the drainage tube, and the lateral extraction head is taken out with longitudinal
The extraction pipe outer wall is stretched out in the outer end for adopting head, and the transverse direction extraction head and longitudinal extraction head are located at the part in the drainage holes
It is provided with the hole of connection drainage holes and the lateral extraction head and longitudinal extraction head.
5. gas drainage device in mine district according to claim 1, it is characterised in that: the blocking component includes gear
Circle, steel rim of spring, elastic sealing gasket and receiving limit loop-drive, wherein the end of the drainage tube corresponds to the drilling end
Position is fixedly installed spaced apart two groups of retaining rings, and the both ends of the steel rim of spring are against being fixed between two groups of retaining rings, institute
It states and is provided with cavity one between steel rim of spring and the extraction pipe outer wall, the diameter of the retaining ring and the diameter of the drilling are mutually fitted
Match, be fixedly installed elastic sealing gasket towards the side of the drill hole inner wall on the steel rim of spring, the elastic sealing gasket with
The receiving limit being connected on the steel rim of spring is provided on the cavity two surrounded between steel rim of spring and the drill hole inner wall
Position circle, expansion packet are fixed on the receiving spacing collar, and the slip casting envelope being connected to the cavity one is provided on the drainage tube
Plug-hole realizes that the slip casting to steel rim of spring expands using slip casting plugging hole slip casting, together when carrying out extraction closure to drainage holes
When, when the expansion packet expands, drainage tube is fixed and is blocked using elastic sealing gasket and swelling agent.
6. gas drainage device in mine district according to claim 1, it is characterised in that: to setting outside the drilling of extraction
There is positioning plate, positioning convex shoulder is provided on the drainage tube, the positioning convex shoulder is positioned on the positioning plate.
7. gas drainage device in mine district according to claim 1, it is characterised in that: the outer end of the drainage tube is set
It is equipped with extraction connector positioning plate, the drainage holes for protruding into the drainage tube of the extraction joint sealing on the extraction connector positioning plate
Interior, extraction component is connected to the drainage holes.
8. gas drainage device in mine district according to claim 1, it is characterised in that: the extraction component includes extraction
Pump and extraction gas storage tanks, wherein control valve, the extraction pump are additionally provided between the extraction pump and the extraction connector
Upper connection extraction gas storage tanks.
9. gas drainage device in mine district according to claim 1, it is characterised in that: the inflatable component includes inflation
Pump, protective gas storage tank and control valve, one end of the inflator pump are connected to protective gas storage tank, the inflator pump it is another
One end is connected to the aeration aperture on the drainage tube by the control valve.
10. mine district gas drainage device described in -9 any one according to claim 1, it is characterised in that: further include control
Device processed, the controller control the movement of the extraction component, high frequency oscillator and inflatable component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068989.4A CN109184781B (en) | 2018-09-13 | 2018-09-13 | Gas extraction device for coal mining area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068989.4A CN109184781B (en) | 2018-09-13 | 2018-09-13 | Gas extraction device for coal mining area |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109184781A true CN109184781A (en) | 2019-01-11 |
| CN109184781B CN109184781B (en) | 2019-12-31 |
Family
ID=64910795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811068989.4A Active CN109184781B (en) | 2018-09-13 | 2018-09-13 | Gas extraction device for coal mining area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109184781B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156049A (en) * | 2020-02-24 | 2020-05-15 | 河南理工大学 | Coal mine gas extraction device |
| CN111188646A (en) * | 2020-01-13 | 2020-05-22 | 河南理工大学 | Low gas permeability coal seam gas drainage equipment |
| CN111852546A (en) * | 2020-07-20 | 2020-10-30 | 河南工程学院 | Underground extraction outburst elimination device and operation method thereof |
| CN111946389A (en) * | 2020-08-03 | 2020-11-17 | 河南工程学院 | Coal mine mining area gas extraction device and method |
| CN117432461A (en) * | 2023-12-15 | 2024-01-23 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003173A (en) * | 2010-10-29 | 2011-04-06 | 北京中矿天安科技发展有限公司 | System and method for automatically measuring and recording gas pressure during coal seam hole sealing |
| CN102704986A (en) * | 2012-06-26 | 2012-10-03 | 河北同成矿业科技有限公司 | Pressure-controlled hole sealing method for gas drainage hole |
| CN107313799A (en) * | 2017-08-16 | 2017-11-03 | 阳泉科汇瓦斯检测技术有限公司 | A kind of sealing and leakage plugging device and method for gas pumping |
| CN107676127A (en) * | 2017-10-20 | 2018-02-09 | 四川大学 | Variant-frequency vibration permeability-increasing gas pumping method and device in hole |
| CN107725020A (en) * | 2017-11-14 | 2018-02-23 | 中煤科工集团重庆研究院有限公司 | A kind of cherry coal rises to hydraulic fracturing anatonosis device and method step by step |
| CN207485465U (en) * | 2017-10-23 | 2018-06-12 | 山西潞安矿业(集团)有限责任公司 | New Coal Mine gas pumping device |
-
2018
- 2018-09-13 CN CN201811068989.4A patent/CN109184781B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003173A (en) * | 2010-10-29 | 2011-04-06 | 北京中矿天安科技发展有限公司 | System and method for automatically measuring and recording gas pressure during coal seam hole sealing |
| CN102704986A (en) * | 2012-06-26 | 2012-10-03 | 河北同成矿业科技有限公司 | Pressure-controlled hole sealing method for gas drainage hole |
| CN107313799A (en) * | 2017-08-16 | 2017-11-03 | 阳泉科汇瓦斯检测技术有限公司 | A kind of sealing and leakage plugging device and method for gas pumping |
| CN107676127A (en) * | 2017-10-20 | 2018-02-09 | 四川大学 | Variant-frequency vibration permeability-increasing gas pumping method and device in hole |
| CN207485465U (en) * | 2017-10-23 | 2018-06-12 | 山西潞安矿业(集团)有限责任公司 | New Coal Mine gas pumping device |
| CN107725020A (en) * | 2017-11-14 | 2018-02-23 | 中煤科工集团重庆研究院有限公司 | A kind of cherry coal rises to hydraulic fracturing anatonosis device and method step by step |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188646A (en) * | 2020-01-13 | 2020-05-22 | 河南理工大学 | Low gas permeability coal seam gas drainage equipment |
| CN111188646B (en) * | 2020-01-13 | 2021-04-27 | 河南理工大学 | Low gas permeability coal seam gas drainage equipment |
| CN111156049A (en) * | 2020-02-24 | 2020-05-15 | 河南理工大学 | Coal mine gas extraction device |
| CN111156049B (en) * | 2020-02-24 | 2021-04-27 | 河南理工大学 | Coal mine gas extraction device |
| CN111852546A (en) * | 2020-07-20 | 2020-10-30 | 河南工程学院 | Underground extraction outburst elimination device and operation method thereof |
| CN111852546B (en) * | 2020-07-20 | 2021-11-02 | 河南工程学院 | Underground extraction outburst elimination device and operation method thereof |
| CN111946389A (en) * | 2020-08-03 | 2020-11-17 | 河南工程学院 | Coal mine mining area gas extraction device and method |
| CN111946389B (en) * | 2020-08-03 | 2022-03-25 | 河南工程学院 | Coal mine mining area gas extraction device and method |
| CN117432461A (en) * | 2023-12-15 | 2024-01-23 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
| CN117432461B (en) * | 2023-12-15 | 2024-03-19 | 太原理工大学 | Drilling gas pulse type extraction device and extraction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109184781B (en) | 2019-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109184781A (en) | Mine district gas drainage device | |
| CN111692935A (en) | Blasting construction method of blasting equipment | |
| CN205980972U (en) | Blast hole blanking plug for open-cast mining | |
| CN208900072U (en) | A kind of novel bag type paste hole packer | |
| CN110894790A (en) | Internal inflation gas cracking tube | |
| CN110469290A (en) | Leakproof two-stage water injection packer | |
| CN108915760A (en) | To hole pumping and mining method under a kind of underground coal mine | |
| CN102794282A (en) | Isobaric inflatable seal joint device for cleaning internal wall of tube | |
| CN208168867U (en) | Heavy caliber test well is layered bailing test device and layering pumping device | |
| CN103743304B (en) | Demolition set | |
| CN110984908A (en) | Hole sealing equipment for gas extraction | |
| CN107676055B (en) | A kind of mash gas pumping drilling method for blocking using S-shaped structural traps bayonet | |
| CN102966371A (en) | Drainage borehole plugging device and method | |
| CN211824109U (en) | Device is clogged to tunnel blasting construction big gun hole | |
| CN208763599U (en) | A kind of petroleum drilling and mining expansion tube being easily installed | |
| CN214738079U (en) | Sleeve valve pipe slip casting rifle | |
| CN208441796U (en) | A kind of down-hole drilling water blockoff equipment | |
| CN109611057B (en) | Carbon dioxide fracturing and permeability increasing device for coal bed gas extraction | |
| CN209539320U (en) | A kind of coal mine gas extraction drill hole hole sealing agent orientation gatherer | |
| CN113153211A (en) | Two-plug two-injection hole sealing device and hole sealing method | |
| CN215594244U (en) | Air bag for air bag type pressure tank | |
| CN110219685A (en) | A kind of roof reinforcement grouting equipment and grouting method | |
| CN109611058A (en) | A kind of coal-bed gas exploitation ancillary equipment | |
| CN219869330U (en) | Dust fall device for open-air blasting | |
| CN216198277U (en) | Hole of bowing arranges sediment water trap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |