CN109184786A - A kind of cranny development coal and rock draining slag-draining device - Google Patents
A kind of cranny development coal and rock draining slag-draining device Download PDFInfo
- Publication number
- CN109184786A CN109184786A CN201811415962.8A CN201811415962A CN109184786A CN 109184786 A CN109184786 A CN 109184786A CN 201811415962 A CN201811415962 A CN 201811415962A CN 109184786 A CN109184786 A CN 109184786A
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- cylinder
- draining
- slag
- compressed air
- rock
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- 239000003245 coal Substances 0.000 title claims abstract description 25
- 239000011435 rock Substances 0.000 title claims abstract description 23
- 238000011161 development Methods 0.000 title claims abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000002893 slag Substances 0.000 abstract description 17
- 238000013019 agitation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000035508 accumulation Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012279 drainage procedure Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 239000011799 hole material Substances 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone 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
- E21F16/00—Drainage
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
It further includes gas blow pipe, the outlet end of the gas blow pipe and the bottom of cylinder are concordant that the invention discloses a kind of cranny development coal and rock draining slag-draining devices including the cylinder slipped into downlink drilling and the drainpipe for being inserted into cylinder lower part；The top of the cylinder is equipped with capping, and bottom is equipped with one-way conduction mechanism；The cylinder is equipped with air intake-exhaust device；Ponding in drilling is drawn into cylinder in exhaust by one-way conduction mechanism by the air intake-exhaust device, and ponding is pressed onto outside drilling by drainpipe in air inlet.Compressed air using underground is power, and first by the ponding and accumulated slag in gas blow pipe agitation drilling, when air intake-exhaust device is in exhaust condition, the ponding for being mingled with accumulated slag enters in cylinder；Compressed air is filled with into cylinder by air intake-exhaust device again, the intracorporal ponding of cylinder and accumulated slag are easily discharged out of the hole.
Description
Technical field
The present invention relates to coal mine gas extraction equipment technical fields, and in particular in a kind of cranny development coal and rock
The downlink layer-through drilling of construction, the device used for discharge ponding accumulated slag.
Background technique
In safe coal recovery process, gas drainage is the essential measure for solving the disaster accidents such as coal and gas prominent.
Downlink crossing-hole gas extraction be exactly before the digging laneway of coal seam, in the stabilization rock stratum away from roof certain distance,
It constructs a rock gangway, and is constructed into coal seam digging laneway surrounding medium layer-through drilling by the tunnel, through after a period of time
It is pre- to take out, decrease up to the risk for eliminating the coal and gas prominent of driving face.The greatest problem that the technology encounters is: due to
Drilling construction downwards, it is difficult to ponding and accumulated slag in discharge drilling.With the increase of hole depth, after drilling construction, boring mud is being bored
Hole bottom precipitation cannot all be discharged, and ponding is even more to be full of drilling, seriously affected sealing quality, finally influenced gas drainage
Effect.Although scene takes many methods to drain deslagging, effect is unobvious.
For downlink drilling ponding accumulated slag problem, 102865104 A of Chinese patent literature CN is " to extraction borehole under coal seam
Drainage arrangement ", 202788934 U of CN " to hole drainage arrangement under underground coal mine ", 203035257 U of CN is " to drilling under a kind of
Hole deslagging drainage arrangement of bowing " etc. be all made of: orifice end be arranged sealer, drainpipe is inserted into hole, and closed into hole
Space afterwards is passed through pressure-air, and positive pressure is formed in hole, the technical solution that hole internal water accumulation is discharged.
According to mine pressure knowledge and borehole observation, there are a relaxation zone around stone head, the range is general
It is 3 ~ 5 times of tunnel radius.After phenomena such as rock generation absciss layer, the changing of the relative positions, expansion, have in the position rock close to aperture
A large amount of crack exists.After the downlink Completion of Drilling Hole constructed in cranny development coal and rock, when using above-mentioned positive pressuring drainage method,
There is the phenomenon that compressed air is revealed along crack, can not form positive pressure in hole, cannot effectively drain.
Summary of the invention
For the technical problems in the prior art, the purpose of the present invention is to provide a kind of easy to operate, efficient
Slag-draining device is drained, after solving the downlink Completion of Drilling Hole constructed in cranny development coal and rock, hole internal water accumulation accumulated slag influences to seal more
The problem of hole, improves gas extraction concentration to guarantee sealing quality.
In order to achieve the above objectives, using following technical scheme.
A kind of cranny development coal and rock draining slag-draining device, including the cylinder slipped into downlink drilling and is inserted into cylinder
The drainpipe of body lower part further includes gas blow pipe, and the outlet end of the gas blow pipe and the bottom of cylinder are concordant；The top of the cylinder
Equipped with capping, bottom is equipped with one-way conduction mechanism；The cylinder is equipped with air intake-exhaust device；The air intake-exhaust device is being arranged
The ponding in drilling is drawn into cylinder by one-way conduction mechanism when gas, ponding is pressed onto brill by drainpipe in air inlet
Outside hole.
In order to keep the apparatus structure more succinct, it is easily installed, the gas blow pipe is passed through out of described cylinder, with cylinder
Top and bottom be tightly connected.
The gas blow pipe include the first compressed air hose, the first quick coupling in capping and be located at inner barrel
Interior tracheae, the end of interior tracheae pass through the bottom of cylinder, the first compressed air hose and interior tracheae by the first quick coupling into
Row connection；First compressed air hose is equipped with the first gas source control switch.The outlet end of gas blow pipe is located at the bottom of cylinder,
The efficiency of air blowing is improved.
The air intake-exhaust device includes the second compressed air hose and the second quick coupling in capping, the second pressure
Contracting air hose passes through the capping and enters inner barrel, and second compressed air hose is equipped with the second gas source control switch, institute
Stating the second gas source control switch is three-way valve, and the three-way valve controls the second compressed air hose and is in straight-through and bypass atmosphere
Two states.When straight-through, air intake-exhaust device injecting compressed air into cylinder extrudes the intracorporal ponding of cylinder from drainpipe；
When bypassing atmosphere, the interior air of cylinder is discharged air intake-exhaust device, and the ponding in drilling is flowed into through one-way conduction mechanism
In cylinder.
The drainpipe includes internal drainage pipe, outer drainpipe and the third quick coupling in capping, the outlet
Water pipe is connected by third quick coupling with internal drainage pipe, and the end of internal drainage pipe is close to the bottom of cylinder.
The one-way conduction mechanism includes the bottom cover of valve and connector drum, and valve can be in contact with bottom cover, one side
Hinged with the upper surface of bottom cover, valve is corresponded on bottom cover multiple holes.The seam of ponding outside cylinder from valve and bottom cover
It is flowed into cylinder in gap；When reverse flow, valve can be pressed on pedestal to play the role of sealing.Hole plays filter
The effect of net, limitation bulky grain enter ontology, prevent from blocking in drainage procedure.
In order to guarantee the air-tightness of valve, the valve is made of rubber.
For the ease of in drilling from downlink into and out.The cylinder is cylindrical or multi-edge column-shaped, both ends of the surface
Edge is equipped with round-corner transition.
First compressed air hose, the second compressed air hose, outer drainpipe are flexible hose.When work, with cylinder
It is connected, when not used, is removed from quick coupling, disk is easy to carry in rolls.
The present apparatus overcomes aperture influence of the rock fracture to draining nearby, and the compressed air using underground is power, first
The ponding and accumulated slag mixing, air intake-exhaust device first passed through in gas blow pipe agitation drilling is in exhaust condition, makes to be mingled with accumulated slag
Ponding enter in cylinder；Compressed air is filled with into cylinder by air intake-exhaust device again, the intracorporal ponding of cylinder and accumulated slag
It is easily discharged out of the hole.Present apparatus structure is simple and convenient to operate, safety, draining deslagging are high-efficient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the partial enlarged view in Fig. 1；
Fig. 3 is A direction view in Fig. 2；
Fig. 4 is the perspective view of the embodiment.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
Please refer to Fig. 1.Structure, ratio, size depicted in this specification institute attached drawing etc., only to cooperate specification institute
The content of announcement is not intended to limit the invention enforceable qualifications so that those skilled in the art understands and reads,
Therefore not having technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing this hair
Under bright the effect of can be generated and the purpose that can reach, the model that disclosed technology contents can be covered should all be still fallen in
In enclosing.Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be also only
Convenient for being illustrated for narration, rather than to limit the scope of the invention, relativeness is altered or modified, in no essence
It changes under technology contents, when being also considered as the enforceable scope of the present invention.
As shown in Figure 1, a kind of cranny development coal and rock draining slag-draining device, including gas blow pipe 5, slip into downlink drilling 16
Interior cylinder 1 and the drainpipe 6 for being inserted into 1 lower part of cylinder, for the ease of from downlink drilling 16 into and out.The cylinder
Body 1 is that cylindrical or multi-edge column-shaped, the edge of both ends of the surface are equipped with round-corner transition.
The outlet end 11 of the gas blow pipe 5 is concordant with the bottom of cylinder 1；The top of the cylinder 1 is equipped with capping 10, bottom
Equipped with one-way conduction mechanism；The cylinder 1 is equipped with air intake-exhaust device 7；Air intake-exhaust device 7 into cylinder 1 for injecting
High pressure gas and exhaust or air-breathing.The air intake-exhaust device 7 exhaust when by one-way conduction mechanism will drill 16 in
Ponding is drawn into cylinder 1, is pressed onto ponding outside drilling 16 by drainpipe 6 in air inlet.
In order to keep the apparatus structure more succinct, it is easily installed, the gas blow pipe 5 is passed through out of described cylinder 1, with cylinder
The top and bottom of body 1 are tightly connected.The gas blow pipe 5 includes the first compressed air hose 51, first in capping 10 fast
The end of quick coupling 2 and the interior tracheae 52 inside cylinder 1, interior tracheae 52 passes through bottom namely the bottom cover 13 of cylinder 1, the
One compressed air hose 51 is attached with interior tracheae 52 by the first quick coupling 2；First compressed air hose 51 is equipped with
First gas source control switch 9.The outlet end 11 of gas blow pipe 5 is located at the bottom of cylinder 1, and the efficiency of air blowing is improved.
Second quick coupling 4 of the air intake-exhaust device 7 including the second compressed air hose 71 and in capping 10,
Second compressed air hose 71 passes through the capping 10 and enters inside cylinder 1, and second compressed air hose 71 is equipped with the second gas
Source control switch 12, the second gas source control switch 12 are three-way valve, and the three-way valve controls the second compressed air hose
71 in straight-through and bypass atmosphere two states.When straight-through, the injecting compressed air into cylinder 1 of air intake-exhaust device 7, by cylinder
Ponding in 1 is extruded from drainpipe 6；When bypassing atmosphere, the interior air of cylinder 1 is discharged air intake-exhaust device 7, in drilling 16
Ponding be flowed into cylinder 1 through one-way conduction mechanism.
The drainpipe 6 includes internal drainage pipe 62, outer drainpipe 61 and the third quick coupling 3 in capping 10,
The outer drainpipe 61 is connected by third quick coupling 3 with internal drainage pipe 62, and the end of internal drainage pipe 62 is close to cylinder 1
Bottom.
As shown in Figure 2 and Figure 3, the one-way conduction mechanism includes the bottom cover 13 of valve 14 and connector drum 1, valve 14
It can be in contact with bottom cover 13, one side and the upper surface of bottom cover 13 are hinged, in order to guarantee the air-tightness of valve 14, the valve 14
It is made of rubber.Valve 14 is corresponded on bottom cover 13 multiple holes 15.Ponding outside cylinder 1 is from valve 14 and bottom cover 13
It is flowed into gap in cylinder 1；When reverse flow, valve 14 can be pressed on pedestal to play the role of sealing.
First compressed air hose 51, the second compressed air hose 71, outer drainpipe 61 are flexible hose.When work,
It is connected, when not used, is removed from quick coupling, disk is easy to carry in rolls with cylinder 1.
In conjunction with Fig. 1 to Fig. 4, when practice of construction, downlink drills after 16 pore-formings, first by the first compressed air hose 51, draining
Pipe 6, air intake-exhaust device 7 are connected on cylinder 1 by quick coupling 2,3,4.Again by the first compressed air hose 51, air inlet
Exhaust apparatus 7 is connected respectively on down-hole high pressure air pipe line 8.The depth drained as needed, determine the first compressed air hose 51,
The length of drainpipe 6, air intake-exhaust device 7.
Cylinder 1 is inserted into inside drilling 16, the depth of draining depends on position of the cylinder 1 in hole.
The first gas source control switch 9 is opened, compressed air is allowed to pass through cylinder by the first compressed air hose 51, interior tracheae 52
1 enters in drilling 16, stirs ponding and accumulated slag.
The handle for moving the second gas source control switch 12 makes to be in bypassed exhaust gas state into the second compressed air hose 71.This
When, 16 internal water accumulations of drilling and accumulated slag open valve 14 in drilling 16 under the action of hydraulic pressure, enter cylinder 1 by the filtering of hole 15
It is internal.
The handle for moving the second gas source control switch 12 makes to be in straight-through inflated condition into the second compressed air hose 71.Cylinder
Form positive pressure inside body 1, under gas pressure, valve 14 close, into cylinder 1 ponding and accumulated slag pass through 6 row of drainpipe
To outside hole.
After drainpipe 6 is no longer discharged, the handle of the second gas source control switch 12 is moved, is made into the second compressed air hose 71
In bypassed exhaust gas state, cylinder 1 is intake, and starts new discharge cycle.
After draining, cylinder 1 and the first compressed air hose 51, drainpipe 6, air intake-exhaust device 7 out of drilling 16
It pulls out, completes draining deslagging work.
Standard machinery configuration switches can be used in first gas source control switch 9, the second gas source control switch 12, by controlling manually
System draining, can also be used the anti-explosion electric magnetic-type structure of PLC control, realize Auto-drainage, row according to the program set and time
Slag.
The device overcomes aperture influence of the rock fracture to draining nearby, and the compressed air using underground is power, first
The ponding and accumulated slag mixing, air intake-exhaust device 7 first passed through in the agitation of gas blow pipe 5 drilling 16 is in exhaust condition, makes to be mingled with
The ponding of accumulated slag enters in cylinder 1；Compressed air is filled with into cylinder 1 by air intake-exhaust device 7 again, the product in cylinder 1
Water and accumulated slag are easily discharged out of the hole.The apparatus structure is simple and convenient to operate, safety, draining deslagging are high-efficient.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of cranny development coal and rock draining slag-draining device, including the cylinder slipped into downlink drilling and is inserted into cylinder
The drainpipe of lower part, it is characterised in that: further include gas blow pipe, the outlet end of the gas blow pipe and the bottom of cylinder are concordant；It is described
The top of cylinder is equipped with capping, and bottom is equipped with one-way conduction mechanism；The cylinder is equipped with air intake-exhaust device；The air inlet row
Ponding in drilling is drawn into cylinder in exhaust by one-way conduction mechanism by device of air, and ponding is passed through row in air inlet
It is outer that water pipe is pressed onto drilling.
2. cranny development coal and rock draining slag-draining device according to claim 1, it is characterised in that: the gas blow pipe is from institute
It states in cylinder and passes through, be tightly connected with the top and bottom of cylinder.
3. cranny development coal and rock draining slag-draining device according to claim 2, it is characterised in that: the gas blow pipe includes
First compressed air hose, the first quick coupling in capping and the interior tracheae positioned at inner barrel, the interior tracheae
End passes through the bottom of cylinder, and the first compressed air hose is attached with interior tracheae by the first quick coupling；First pressure
Contracting air hose, which is equipped with, controls its logical the first gas source control switch only.
4. according to claim 1 or the 3 cranny development coal and rocks are used and drain slag-draining device, it is characterised in that: the air inlet row
Device of air includes the second compressed air hose and the second quick coupling in capping, and the second compressed air hose passes through the envelope
Lid enters the inner barrel, and second compressed air hose is equipped with the second gas source control switch, the second gas source control
Switch is three-way valve, and the three-way valve controls the second compressed air hose and switches straight-through and bypass atmosphere two states.
5. cranny development coal and rock draining slag-draining device according to claim 4, it is characterised in that: the drainpipe includes
Internal drainage pipe, outer drainpipe and the third quick coupling in capping, the outer drainpipe by third quick coupling with
Internal drainage pipe is connected, and the end of internal drainage pipe is close to the bottom of cylinder.
6. cranny development coal and rock draining slag-draining device according to claim 1, it is characterised in that: the one-way conduction machine
Structure includes the bottom cover of valve and connector drum, and valve can be in contact with bottom cover, and the upper surface of one side and bottom cover is hinged, bottom cover
Upper corresponding valve has multiple holes.
7. cranny development coal and rock draining slag-draining device according to claim 6, it is characterised in that: the valve is by rubber
It is made.
8. cranny development coal and rock draining slag-draining device according to claim 1, it is characterised in that: the cylinder is cylinder
The edge of shape or multi-edge column-shaped, both ends of the surface is equipped with round-corner transition.
9. cranny development coal and rock draining slag-draining device according to claim 5, it is characterised in that: first compression is empty
Tracheae, the second compressed air hose, outer drainpipe are flexible hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415962.8A CN109184786B (en) | 2018-11-26 | 2018-11-26 | Drainage and slag discharge device for fracture development coal rock mass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415962.8A CN109184786B (en) | 2018-11-26 | 2018-11-26 | Drainage and slag discharge device for fracture development coal rock mass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109184786A true CN109184786A (en) | 2019-01-11 |
| CN109184786B CN109184786B (en) | 2024-04-09 |
Family
ID=64938003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811415962.8A Active CN109184786B (en) | 2018-11-26 | 2018-11-26 | Drainage and slag discharge device for fracture development coal rock mass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109184786B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031713A (en) * | 2020-09-28 | 2020-12-04 | 河南理工大学 | Mining downward drilling drainage, deslagging and extraction integrated equipment and gas extraction method |
| CN112627873A (en) * | 2020-12-15 | 2021-04-09 | 西南交通大学 | Rock burst prevention and treatment device and prevention and treatment method |
| CN114908738A (en) * | 2022-06-08 | 2022-08-16 | 中铁一局集团(广州)建设工程有限公司 | Construction method of foundation pile of deep-water bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865104A (en) * | 2012-06-19 | 2013-01-09 | 淮南矿业(集团)有限责任公司 | Downward extraction drilling drainage device |
| CN203640770U (en) * | 2013-12-19 | 2014-06-11 | 新奥气化采煤有限公司 | Drainage device |
| CN105697053A (en) * | 2016-02-26 | 2016-06-22 | 安徽理工大学 | Pumping and pressing hybrid gas extraction downward drilling and water draining device |
| CN107387159A (en) * | 2017-09-06 | 2017-11-24 | 中煤科工集团重庆研究院有限公司 | Intelligent drainage and deslagging system for downward drilling of coal mine gas extraction and application of intelligent drainage and deslagging system |
| CN209277940U (en) * | 2018-11-26 | 2019-08-20 | 平顶山天安煤业股份有限公司勘探工程处 | A kind of cranny development coal and rock draining slag-draining device |
-
2018
- 2018-11-26 CN CN201811415962.8A patent/CN109184786B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865104A (en) * | 2012-06-19 | 2013-01-09 | 淮南矿业(集团)有限责任公司 | Downward extraction drilling drainage device |
| CN203640770U (en) * | 2013-12-19 | 2014-06-11 | 新奥气化采煤有限公司 | Drainage device |
| CN105697053A (en) * | 2016-02-26 | 2016-06-22 | 安徽理工大学 | Pumping and pressing hybrid gas extraction downward drilling and water draining device |
| CN107387159A (en) * | 2017-09-06 | 2017-11-24 | 中煤科工集团重庆研究院有限公司 | Intelligent drainage and deslagging system for downward drilling of coal mine gas extraction and application of intelligent drainage and deslagging system |
| CN209277940U (en) * | 2018-11-26 | 2019-08-20 | 平顶山天安煤业股份有限公司勘探工程处 | A kind of cranny development coal and rock draining slag-draining device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031713A (en) * | 2020-09-28 | 2020-12-04 | 河南理工大学 | Mining downward drilling drainage, deslagging and extraction integrated equipment and gas extraction method |
| CN112031713B (en) * | 2020-09-28 | 2023-08-15 | 河南理工大学 | Mining downward drilling drainage slag discharge extraction integrated equipment and gas extraction method |
| CN112627873A (en) * | 2020-12-15 | 2021-04-09 | 西南交通大学 | Rock burst prevention and treatment device and prevention and treatment method |
| CN112627873B (en) * | 2020-12-15 | 2021-11-30 | 西南交通大学 | Rock burst prevention and treatment device and prevention and treatment method |
| CN114908738A (en) * | 2022-06-08 | 2022-08-16 | 中铁一局集团(广州)建设工程有限公司 | Construction method of foundation pile of deep-water bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109184786B (en) | 2024-04-09 |
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