CN104533336B - Process and device for pre-grouting rubber matrix to seal soft coal seam gas drainage borehole - Google Patents
Process and device for pre-grouting rubber matrix to seal soft coal seam gas drainage borehole Download PDFInfo
- Publication number
- CN104533336B CN104533336B CN201410839217.1A CN201410839217A CN104533336B CN 104533336 B CN104533336 B CN 104533336B CN 201410839217 A CN201410839217 A CN 201410839217A CN 104533336 B CN104533336 B CN 104533336B
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- China
- Prior art keywords
- capsule
- sebific duct
- back segment
- extraction
- pump
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- 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.)
- Expired - Fee Related
Links
- 239000003245 coal Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000011159 matrix material Substances 0.000 title abstract 2
- 239000002775 capsule Substances 0.000 claims abstract description 122
- 238000000605 extraction Methods 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims description 47
- 239000007924 injection Substances 0.000 claims description 47
- 239000012530 fluid Substances 0.000 claims description 39
- 239000003292 glue Substances 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- 238000007569 slipcasting Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 239000000084 colloidal system Substances 0.000 claims description 10
- 230000037452 priming Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003818 cinder Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims description 2
- 238000001764 infiltration Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 2
- 239000003566 sealing material Substances 0.000 description 6
- 238000005086 pumping Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 210000002969 egg yolk Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- 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
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a process and device for pre-grouting rubber matrix to seal a soft coal seam gas drainage borehole. The device comprises a front section capsule, a middle section capsule and a rear section capsule which are connected in sequence. The front section capsule and the rear section capsule are communicated by a liquid filling rubber tube, and the rear section capsule is connected to a liquid filling pump by a liquid filling rubber tube. A liquid filling rubber tube is arranged on the middle section capsule, and the liquid filling rubber tube axially penetrates through the rear section capsule to be connected with the liquid filling pump. A grouting rubber tube further axially penetrates through the rear section capsule, and the liquid inlet end of the rear section capsule is connected with a grouting pump. The device is further provided with an extraction tube which sequentially and axially penetrates through the front section capsule, the middle section capsule and the rear section capsule, and the outer end of the extraction tube is connected with an extraction pipeline. The extraction tube is in sealing connection with all the capsules through sliding sealing connectors. According to the process and device, compact filling is conducted in the whole extraction process, the gas leakage phenomenon is avoided, and the sealing effect of the gas drainage borehole is effectively improved. The process and device are suitable for sealing rock drill holes and hard coal seam holes, and particularly suitable for sealing the soft coal seam gas drainage borehole, and has the advantage of being wide in application range.
Description
Technical field
The present invention relates to a kind of drainage from coal seam borehole sealing technique and device, particularly a kind of pre- glue injection body sealing yolk coal
The technique of layer extraction borehole and device.
Background technology
At present, conventional Firedamp precaution measures mainly have two methods of ventilation and extraction, and wherein, extraction is preventing and treating gas calamity
One fundamental measure of evil." safety regulations in coal mine " (revised edition in 2011), " preventing and treating coal and gas prominent regulation ", " colliery
Gas pumping temporary provisions up to standard " and " coal mine gas drainage engineering design code " etc. all coal mine gas drainage work is proposed
Clear stipulaties.
Compared with rock stratum and hard coal, borehole sealing does not sternly lead to the too low exception of gas extraction concentration prominent.With Zhengzhou Mining Area
As a example, this mining area two1Exactly this typical high-ground stress of the existing production zone in coal seam, high methane pressure, soft low-permeable
Projecting coal bed；Concordant drilling gas extraction concentration only has 10% about.
Under extraction condition of negative pressure, mainly include sealing material itself the reason roadway air can enter gas pumping room
Have between crackle, sealing material and borehole wall and there is gap or fail to be close together and the presence of sealing material surrounding medium
Crack.For the sealing materials such as capsule, polyurethane and expanding cement, under the conditions of sealing of hole with pressure, first two air leaks
Passage can eliminate substantially, and the initial fissure of sealing material surrounding medium also tends to closure state substantially；And, gas pumping
Negative pressure typically in 13kpa, than relatively low；Theoretically it should be not in large-scale air leakage.This illustrates gas
Also there are other gas leak path, this approach is the secondary interstice of sealing material surrounding medium during extraction.High
Although water material can injection hole surrounding medium crack, easily dry and cracked；Solid phase particles size in secondary hole sealing method is again difficult
To mate completely with the size in this crack.
Therefore, in order to improve sealing and the gas pumping efficiency of weak seam extraction borehole, for the gas in such coal seam
Diaster prevention and control work provides technical guarantee；Explore a kind of new sealing of hole mode of suitable weak seam borehole characteristic and just seem outstanding
For urgent.
Content of the invention
It is an object of the invention to provide a kind of pre- glue injection body seals technique and the device of weak seam extraction borehole, can be right
Weak seam extraction borehole is realized effectively sealing.
For achieving the above object, the present invention takes technical scheme below: a kind of pre- glue injection body sealing weak seam extraction is bored
Aperture apparatus, including the leading portion capsule being linked in sequence, stage casing capsule and back segment capsule, between described leading portion capsule and back segment capsule by
Fluid injection sebific duct connects, and back segment capsule is connected to topping-up pump by fluid injection sebific duct；Described stage casing capsule is provided with a fluid injection sebific duct, and should
Fluid injection sebific duct is connected with topping-up pump axially across back segment capsule；Also axially across a slip casting sebific duct, slip casting on described back segment capsule
Sebific duct liquid feeding end connects grouting pump；This device is additionally provided with a drainage tube, and described drainage tube is successively axially across leading portion capsule, stage casing
Capsule and back segment capsule, its outer end connects extraction pipeline；Described drainage tube by slipper seal connector respectively with leading portion capsule, in
Section capsule and back segment capsule are tightly connected.
Described slipper seal connector includes two relative concave shape conventional seals circles of opening and is flush-mounted in conventional seals
Sliding ring in circle, described conventional seals circle is sealed with capsule respectively and fixes, and sliding ring can slide along drainage tube.
Described slip casting sebific duct and fluid injection sebific duct are connected with capsule by nipple.
The front end of described drainage tube is provided with extraction hole, and pipeline can be avoided to be blocked by cinder.
The length of the described fluid injection sebific duct being connected between leading portion capsule and back segment capsule is slightly larger than the length of stage casing capsule.
A kind of pre- glue injection body seals the technique of weak seam extraction borehole, comprises the following steps:
(1) during workman drills to coal seam, connect extraction borehole device, and get out macromolecular material, consolidate
Agent, water and emulsion；After construction terminates, into boring, send into this device；
(2) priming pump, injects inflation fluid by fluid injection sebific duct to back segment capsule, and, inflation fluid passes through fluid injection glue
Pipe injects leading portion capsule, forces back segment capsule and leading portion capsule to expand, and closes topping-up pump；
(3) start grouting pump, to Implanted Polymer between back segment capsule and leading portion capsule and consolidated by slip casting sebific duct
Agent mixture, this mixture to the crack infiltration of boring surrounding medium, closes grouting pump under a certain pressure；
(4) after the mixture of macromolecular material and curing agent is changed into colloid, priming pump, by fluid injection sebific duct and
Inject inflation fluid to stage casing capsule, make stage casing capsule expand rib and colloid around extruding, close topping-up pump；
(5) drainage tube and extraction pipeline are connected, the gas in boring along drainage tube and extraction pipeline outwardly, is realized watt
This effective extraction.
The invention has the beneficial effects as follows: a kind of pre- glue injection body seals technique and the device of weak seam extraction borehole, is taking out
Before borehole sealing, extraction borehole is sealed using the mixture of macromolecular material and curing agent so that boring surrounding medium splits
Gap is tightly enriched during whole extraction, does not produce gas leak phenomenon；Using leading portion capsule and back segment capsule to extraction borehole
Tentatively sealed, liquid macroimolecule material can be prevented random along boring or boring surrounding medium crack with the mixture of curing agent
Flowing is it is ensured that the directionality of migration direction；Pass through to expand compressing borehole wall using stage casing capsule, by biography continual and steady for pressure
Pass boring surrounding medium, force sealing of hole capsule and borehole wall to oppress the colloid of hole wall surface, boring surrounding medium oppresses it
Colloid within crack, effectively increases the sealing effectiveness of extraction borehole；Due to extraction borehole surrounding medium is sealed using colloid
Crack, both can abundant filling borehole surrounding medium crack, again can according to the space geometry structure change in crack auto Deformation；No
It is only applicable to rockhole and the sealing of hard coal seam boring, be particularly suited for the sealing of weak seam extraction borehole, therefore, have suitable
With the wide advantage of scope.
Brief description
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Fig. 1 is that a kind of pre- glue injection body seals the technique of weak seam extraction borehole and the enforcement structural representation of device.
Fig. 2 is the structural representation that a kind of pre- glue injection body seals weak seam extraction borehole device.
In figure, 1. leading portion capsule, 2. stage casing capsule, 3. back segment capsule, 4. drainage tube, 5. fluid injection sebific duct, 6. slip casting sebific duct,
7. extraction pipeline, 8. topping-up pump, 9. grouting pump, 10. slipper seal connector, 11. borings, 12. coal seams, 13. cracks, 14. liquid
State macromolecular material and curing agent mixture.
Specific embodiment
In the accompanying drawings, a kind of pre- glue injection body seals weak seam extraction borehole device, including the leading portion capsule being linked in sequence
1st, stage casing capsule 2 and back segment capsule 3, is connected by fluid injection sebific duct 5 between described leading portion capsule 1 and back segment capsule 3, and back segment capsule
3 are connected to topping-up pump 8 by fluid injection sebific duct 5；Described stage casing capsule 2 is provided with a fluid injection sebific duct 5, and this fluid injection sebific duct 5 axially across
Back segment capsule 3 is connected with topping-up pump 8；Also axially across a slip casting sebific duct 6 on described back segment capsule 3, slip casting sebific duct 6 liquid feeding end is even
Connect grouting pump 9；This device is additionally provided with a drainage tube 4, and described drainage tube 4 is successively axially across leading portion capsule 1, stage casing capsule 2 and
Back segment capsule 3, its outer end connects extraction pipeline 7；Described drainage tube 4 by slipper seal connector 10 respectively with leading portion capsule 1, in
Section capsule 2 and back segment capsule 3 are tightly connected.
Described slipper seal connector 10 includes two relative concave shape conventional seals circle 10-1 of opening and is flush-mounted in general
Sliding ring 10-2 in logical sealing ring 10-1, described conventional seals circle 10-1 are sealed with capsule respectively and fix, slipper seal
Circle 10-2 can slide along drainage tube 4.
Described slip casting sebific duct 6 and fluid injection sebific duct 5 are connected with capsule by nipple.
The front end of described drainage tube 4 is provided with extraction hole, and pipeline can be avoided to be blocked by cinder.
The length of the described fluid injection sebific duct 5 being connected between leading portion capsule 1 and back segment capsule 3 is slightly larger than stage casing capsule 2
Length.
During sealing extraction borehole, open topping-up pump 8, allow leading portion capsule 1 and back segment capsule 3 first to expand, leading portion capsule 1 and after
Form sealing area between section capsule 3 and boring 11, then open grouting pump 9 to slip casting in sealing area, liquid can be prevented high
Molecular material is arbitrarily flowed along boring 11 or boring 11 surrounding medium cracks 13 with curing agent mixture 14；Macromolecular material with solid
Agent mixture 14 is initially liquid, under a certain pressure, can fully infiltrate through boring 11 surrounding medium cracks 13, curing reaction
Forming colloid afterwards, then open topping-up pump 8 makes stage casing capsule 2 expand, and under the extruding of stage casing capsule 2, can achieve to extraction borehole
11 effective sealing；Drainage tube 4 passes through from the inside of leading portion capsule 1, stage casing capsule 2 and back segment capsule 3, and connected mode is to slide
Sealing, can be good at adapting to expansion and the contraction of capsule, can slide along drainage tube 4 during capsule retractable, and swollen in capsule
Swollen liquid will not leak；The length being connected to the fluid injection sebific duct between leading portion capsule 1 and back segment capsule 3 is slightly larger than stage casing capsule 2, both
Can prevent because it is not parallel with the axis of stage casing capsule 2 leads to sebific duct not connect, and can avoid the occurrence of in hole sealing device again
The messy phenomenon of portion's pipeline.
A kind of pre- glue injection body seals the technique of weak seam extraction borehole, comprises the following steps:
(1) during workman drills to coal seam, connect extraction borehole device, and get out macromolecular material, consolidate
Agent, water and emulsion；After construction terminates, into boring 11, send into this device；
(2) priming pump 8, injects inflation fluid by fluid injection sebific duct 5 to back segment capsule 3, and, inflation fluid passes through fluid injection
Sebific duct 5 injects leading portion capsule 1, forces back segment capsule 3 and leading portion capsule 1 to expand, and closes topping-up pump 8；
(3) start grouting pump 9, by slip casting sebific duct 6 to Implanted Polymer between back segment capsule 6 and leading portion capsule 2
With curing agent mixture 14, this mixture permeates to the crack 13 of 11 surrounding medium of holing under a certain pressure, closes grouting pump
9；
(4) after the mixture 14 of macromolecular material and curing agent is changed into colloid, priming pump 8, by fluid injection glue
Pipe 5 and to stage casing capsule 2 inject inflation fluid, make stage casing capsule 2 expand extruding around rib and colloid, close topping-up pump 8；
(5) connect drainage tube 4 and extraction pipeline 7, the gas in boring 11 along drainage tube 4 and extraction pipeline 7 outwardly,
Realize effective extraction of gas.
Claims (5)
1. a kind of pre- glue injection body seals weak seam extraction borehole device, it is characterized in that, including the leading portion capsule being linked in sequence, in
Section capsule and back segment capsule, are connected by fluid injection sebific duct between described leading portion capsule and back segment capsule, and back segment capsule are by fluid injection glue
Pipe connects to topping-up pump；Described stage casing capsule is provided with a fluid injection sebific duct, and this fluid injection sebific duct is axially across back segment capsule and fluid injection
Pump connects；Also axially across a slip casting sebific duct on described back segment capsule, slip casting sebific duct liquid feeding end connects grouting pump；This device also sets
There is a drainage tube, successively axially across leading portion capsule, stage casing capsule and back segment capsule, its outer end connects drainage tube to described drainage tube
Road；Described drainage tube is tightly connected with leading portion capsule, stage casing capsule and back segment capsule respectively by slipper seal connector；Described cunning
Dynamic sealing connector includes two relative concave shape conventional seals circles of opening and the slipper seal being flush-mounted in conventional seals circle
Circle, described conventional seals circle is sealed with capsule respectively and fixes, and sliding ring can slide along drainage tube.
2. a kind of pre- glue injection body according to claim 1 seals weak seam extraction borehole device, it is characterized in that, described note
Slurry sebific duct and fluid injection sebific duct are connected with capsule by nipple.
3. a kind of pre- glue injection body according to claim 1 seals weak seam extraction borehole device, it is characterized in that, described takes out
The front end adopting pipe is provided with extraction hole, and pipeline can be avoided to be blocked by cinder.
4. a kind of pre- glue injection body according to claim 1 seals weak seam extraction borehole device, it is characterized in that, described company
The length being connected to the fluid injection sebific duct between leading portion capsule and back segment capsule is slightly larger than the length of stage casing capsule.
5. a kind of pre- glue injection body seals the technique of weak seam extraction borehole, comprises the following steps:
(1) during workman drills to coal seam, connect extraction borehole device, and be ready to macromolecular material, curing agent,
Water and emulsion；After construction terminates, into boring, send into this device；
(2) priming pump, injects inflation fluid by fluid injection sebific duct to back segment capsule, and, inflation fluid is noted by fluid injection sebific duct
Enter leading portion capsule, force back segment capsule and leading portion capsule to expand, close topping-up pump；
(3) start grouting pump, by slip casting sebific duct to Implanted Polymer and curing agent between back segment capsule and leading portion capsule
Mixture, this mixture to the crack infiltration of boring surrounding medium, closes grouting pump under a certain pressure；
(4) after the mixture of macromolecular material and curing agent is changed into colloid, priming pump, by fluid injection sebific duct and in
Section capsule injection inflation fluid, makes stage casing capsule expand rib and colloid around extruding, closes topping-up pump；
(5) drainage tube and extraction pipeline are connected, the gas in boring along drainage tube and extraction pipeline outwardly, realizes gas
Effectively extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839217.1A CN104533336B (en) | 2014-12-30 | 2014-12-30 | Process and device for pre-grouting rubber matrix to seal soft coal seam gas drainage borehole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839217.1A CN104533336B (en) | 2014-12-30 | 2014-12-30 | Process and device for pre-grouting rubber matrix to seal soft coal seam gas drainage borehole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104533336A CN104533336A (en) | 2015-04-22 |
| CN104533336B true CN104533336B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410839217.1A Expired - Fee Related CN104533336B (en) | 2014-12-30 | 2014-12-30 | Process and device for pre-grouting rubber matrix to seal soft coal seam gas drainage borehole |
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| Country | Link |
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| CN (1) | CN104533336B (en) |
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| CN106468153B (en) * | 2015-08-15 | 2019-08-23 | 辽宁兰特科技发展有限公司 | Wall rock drill-hole high-pressure fluid locks pressure system |
| CN106499359A (en) * | 2015-09-07 | 2017-03-15 | 辽宁兰特科技发展有限公司 | A kind of wall rock drill-hole high-pressure fluid locks the using method of pressure system |
| CN106968633B (en) * | 2017-03-31 | 2019-06-21 | 中国矿业大学 | Gas extraction drilling and hole sealing device and hole sealing method |
| CN108060903B (en) * | 2017-11-24 | 2019-01-08 | 山东科技大学 | Coal-bed gas pressure measures dynamic self-balance pressurization hole sealing device and method |
| CN108868871B (en) * | 2018-05-18 | 2024-03-29 | 河南能源化工集团研究总院有限公司 | Method for quickly balancing stress after hydraulic punching |
| CN113756742B (en) * | 2021-08-23 | 2023-04-28 | 山西兰花科创玉溪煤矿有限责任公司 | Secondary hole sealing method for underground coal mine gas drainage borehole |
| CN117703299B (en) * | 2024-02-06 | 2024-05-14 | 山东科技大学 | Visual sealing device and sealing method for gas extraction drilling |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1610052A1 (en) * | 1988-07-06 | 1990-11-30 | Государственный Макеевский Научно-Исследовательский Институт По Безопасности Работ В Горной Промышленности | Method of sealing gas drainage hole drilled into adjoining seams |
| RU2221146C1 (en) * | 2002-07-17 | 2004-01-10 | Институт горного дела СО РАН (статус государственного учреждения) | Device sealing well-head |
| CN103075128A (en) * | 2012-12-31 | 2013-05-01 | 中国矿业大学 | Method for sealing gas extraction drill holes |
| CN103195390A (en) * | 2013-04-10 | 2013-07-10 | 山西潞安环保能源开发股份有限公司 | Mining-coal bed nearly horizontal gas extraction borehole sealing method |
| CN103452525A (en) * | 2013-09-06 | 2013-12-18 | 河南理工大学 | Gas pumping fixing occluder and use method thereof |
| CN103485747A (en) * | 2013-09-23 | 2014-01-01 | 陕西煤业化工技术研究院有限责任公司 | Automatic pressure-adding borehole sealing device and method |
| CN204386550U (en) * | 2014-12-30 | 2015-06-10 | 华北科技学院 | A kind of pre-glue injection body sealing weak seam extraction borehole device |
-
2014
- 2014-12-30 CN CN201410839217.1A patent/CN104533336B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1610052A1 (en) * | 1988-07-06 | 1990-11-30 | Государственный Макеевский Научно-Исследовательский Институт По Безопасности Работ В Горной Промышленности | Method of sealing gas drainage hole drilled into adjoining seams |
| RU2221146C1 (en) * | 2002-07-17 | 2004-01-10 | Институт горного дела СО РАН (статус государственного учреждения) | Device sealing well-head |
| CN103075128A (en) * | 2012-12-31 | 2013-05-01 | 中国矿业大学 | Method for sealing gas extraction drill holes |
| CN103195390A (en) * | 2013-04-10 | 2013-07-10 | 山西潞安环保能源开发股份有限公司 | Mining-coal bed nearly horizontal gas extraction borehole sealing method |
| CN103452525A (en) * | 2013-09-06 | 2013-12-18 | 河南理工大学 | Gas pumping fixing occluder and use method thereof |
| CN103485747A (en) * | 2013-09-23 | 2014-01-01 | 陕西煤业化工技术研究院有限责任公司 | Automatic pressure-adding borehole sealing device and method |
| CN204386550U (en) * | 2014-12-30 | 2015-06-10 | 华北科技学院 | A kind of pre-glue injection body sealing weak seam extraction borehole device |
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|---|---|
| CN104533336A (en) | 2015-04-22 |
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Granted publication date: 20170118 Termination date: 20191230 |