CN106968633B - Gas extraction drilling and hole sealing device and hole sealing method - Google Patents
Gas extraction drilling and hole sealing device and hole sealing method Download PDFInfo
- Publication number
- CN106968633B CN106968633B CN201710205746.XA CN201710205746A CN106968633B CN 106968633 B CN106968633 B CN 106968633B CN 201710205746 A CN201710205746 A CN 201710205746A CN 106968633 B CN106968633 B CN 106968633B
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- Prior art keywords
- chuck
- sealing
- hole
- cloth bag
- drainage
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/1204—Packers; Plugs permanent; drillable
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
Abstract
A hole sealing device and a hole sealing method for a gas extraction drill hole are disclosed, wherein the hole sealing device comprises a cloth bag (3), a front chuck (2), a rear chuck (4) and an extraction pipe (6), the cloth bag (3) is made of elastic thin-wall microporous materials, and two ends of the cloth bag (3) are respectively fixed on the front chuck (2) and the rear chuck (4); two ends of the extraction pipe (6) respectively penetrate through the front chuck (2) and the rear chuck (4), the front chuck (2) is fixedly connected with the extraction pipe (6), and the rear chuck (4) is connected with the extraction pipe (6) in a sliding manner; an axial grouting pipe socket (12) is arranged on the rear chuck (4); the hole sealing device is quickly connected with a gas extraction pipe on an operation site, hole sealing materials are injected into the cloth bag (3), the hole sealing materials expand in the later period and seep out of the cloth bag (3) to fill cracks around the drill hole, a sealed support is formed for the drill hole, and the cracks around the drill hole are prevented from leaking gas. The method is simple to operate, economical, environment-friendly and good in safety.
Description
Technical field
The present invention relates to a kind of hole sealing device and method for sealing, fill more particularly to a kind of coal mine gas extraction drill hole sealing of hole
It sets and method for sealing, belongs to control of coalmine gas technical field.
Background technique
Gas Disaster seriously threatens mine safety production.Currently, the prevention and treatment most effective measure of coal mine gas disaster is
Gas drainage, and 95% or more high methane of China and projecting mine belong to low air permeability coal seam, permeability coefficient only has 10-3~
10-4MD, gas permeability of coal seam is poor, and current mash gas pumping drilling sealing of hole does not cause sternly gas leakage during extraction serious in addition, drilling
Gas extraction concentration decaying is very fast, and gas drainage is difficult, gas drainage low efficiency is the generally existing technology of domestic projecting mine
Problem.
The hole sealing technology of China's coal-mine mash gas pumping drilling mainly has at present: cement mortar sealing of hole, polyurethane sealing of hole, mining
Hole packer sealing of hole etc. is all widely applied in these technology regular periods but all there is certain deficiencies, such as cement mortar
When water shutoff is flat or near-horizontal hole, due to gravity mortar precipitate and drill between form gap, sealing effect is bad；Polyurethane
The sealing material reaction time is very fast, waste of material, environmental pollution is easily caused in operating process, and expensive；The envelope of hole packer
Hole depth is limited, etc..
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of mash gas pumping drilling hole sealing device and method for sealing, can be right
The drilling of each tilt angle carries out effectively permanent sealing of hole.The invention enables the effective extraction time of drilling it is long and easy to operate,
It is economic and environment-friendly, safety is good.
In order to achieve the above object, the invention adopts the following technical scheme: a kind of mash gas pumping drilling hole sealing device, including
Cloth bag, front chuck, rear chuck and drainage tube, the elastic thin-wall poromerics system that the bag main body is 30~40 by mesh number
At cloth bag front end is fixed in front chuck, rear end is fixed in rear chuck；The drainage tube front end passes through front chuck, rear end
Across rear chuck, front chuck is fixedly connected with drainage tube, and rear chuck is slidably connected with the extraction seal of tube, and drainage tube both ends are quick
Pipe joint structure；Rear chuck is equipped with axial Grouting Pipe socket；
Further, the drainage tube is the special extraction short tube that both ends set hickey；
Further, the front chuck and rear chuck are made of rubber, and front chuck on its hollow hole hole wall by being arranged
Two circular protrusion structures be fixed on drainage tube；
Further, the front chuck and rear chuck outer circle are equipped with the fixing groove of annular, and cloth bag both ends pass through annular
Cassette tape is fixed in the fixing groove of front chuck and rear chuck；
Further, non-return valve is set on the Grouting Pipe socket of the rear chuck, and non-return valve and rear chuck are integrally formed.
A kind of mash gas pumping drilling method for sealing, includes the following steps:
(a) according to the data parameters in coal seam, construction forms drilling；
(b) the gas drainage Guan Lian in quick coupling and the operation field drilling that drainage device is passed through drainage tube front end
It connects, connects new section gas drainage pipe in the rear end of drainage device in the same way；
(c) slide backward in rear chuck to the gas drainage pipe newly accessed, by all gas drainage pipes connected to
It is pushed in drilling；The gas drainage pipe for continuing to access a new section, continues to slide backward chuck；It operates repeatedly, until cloth bag
It is straightened；
(d) after Grouting Pipe being inserted into the Grouting Pipe socket in rear chuck, entire hole sealing device is sent into the sealing of hole of plan
Section, then Grouting Pipe is accessed into grouting system；
(e) prepare sealing material and start slip casting, when reaching the grouting pressure of setting, by Grouting Pipe and hole sealing device and note
Equipment is starched to be detached from；
(f) Grouting Pipe, grouting pump are arranged and is cleaned, in case next time uses.
Further, the sealing material is the thick slurry mixed by sealing of hole powder and water according to 1:1.5~1:2,
Sealing of hole powder by parts by weight be 90~100 parts of portland cement, 0.5~1 part of quick lime, 0.15~0.3 part of iron powder and
Oxide mixture, 0.3~0.6 part of magnesium powder, 8~15 parts of sodium metasilicate composition, portland cement are the main of sealing of hole powder
Ingredient, quick lime, iron powder and oxide mixture, magnesium powder are as swelling agent, and sodium metasilicate is as accelerator；
Further, after sealing material solidification, expansion multiple is 1.2~2 times, compression strength 35MPa；
Further, sealing section is 8 meters~15 meters at a distance from aperture.
Compared with prior art, the present invention has the advantage that
(1) this hole sealing device by the way that front chuck is fixed on drainage tube, rear chuck and drainage tube are slidably connected so that cloth
Bag, which can fold, to be covered on drainage tube, so that present apparatus self-contained complete set device, convenient for storage and transport；Scene only needs logical
It crosses quick coupling to connect with other gas drainage pipes, then slip casting, without other operations, process is simple and quick, is easy to
Grasp promote and it is cheap (only 50 yuan of every covering device cost).
(2) cloth bag is made of elastic thin-wall poromerics, and sealing material, which is injected into the later period in cloth bag, can expand extruding,
It is formed in the crack that certain pressure enables intracavitary sealing material to penetrate into drilling surrounding rock outward and is carried out in bag chamber
It blocks, so that slip casting chamber be made to combine closely with surrounding rock, sealing supporting can either be formed to drilling, can also be effectively prevented
Drill surrounding gas leakage.
(3) present invention uses inorganic expansive material as sealing material, makes simple and environmentally-friendly and cheap, economy
It is good.
(4) sealing of hole can be realized without high-pressure slip-casting in the present invention, and safety is good.
Detailed description of the invention
Fig. 1 is the device of the invention structural schematic diagram.
Fig. 2 is front chuck structural schematic diagram.
Fig. 3 is rear chuck structural schematic diagram.
Fig. 4 is embodiment of the present invention figure.
In figure: 2, front chuck, 3, cloth bag, 4, rear chuck, 6, drainage tube, 7, annular snap band, 8, Grouting Pipe, 10, fixing groove,
11, raised structures, 12, Grouting Pipe socket, 13, drilling, 14, crack.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figures 1 to 4, a kind of mash gas pumping drilling hole sealing device, including cloth bag 3, front chuck 2, rear chuck 4 and pumping
Pipe 6 is adopted, 3 main body of cloth bag is made of mesh number of 30~40 elastic thin-wall poromerics, and both ends are made of sleeve cloth, cloth
3 front ends are fixed in front chuck 2 bag, rear end is fixed in rear chuck 4；6 front end of drainage tube passes through front chuck 2, rear end
Across rear chuck 4, front chuck 2 is fixedly connected with drainage tube 6, and rear chuck 4 is slidably connected with the sealing of drainage tube 6,6 both ends of drainage tube
For quick pipe connecting header structure；Rear chuck 4 is equipped with axial Grouting Pipe socket 12, in case connecting with Grouting Pipe 8.The cloth bag
3 pore size is greater than the partial size of sealing material, and after sealing material is injected into cloth bag 3, sealing material after expansion can be
To 3 exosmosis of cloth bag under the effect of 3 internal pressure of cloth bag, to block to the crack 14 around drilling 13, drilling 13 is realized
Permanently stable sealing.
The drainage tube 6 is the special extraction short tube that both ends set hickey, and length is 0.4 meter；3 foldable integral of cloth bag
On drainage tube 6, the length after 3 folding shrinking of cloth bag is good is 0.11 meter, and the length to trail is 5 meters~10 meters, is convenient for and shows
Other drainage tubes of field are quickly seamlessly connected, and convenient transportation is stored.
The front chuck 2 and rear chuck 4 is made of rubber, and front chuck 2 passes through two be arranged on its hollow hole hole wall
Circular protrusion structure 11 is fixed on drainage tube 6；Rubber is the high elastic polymer material of reversible deformation, has good bullet
Property, fixed and sealing effect is preferable, can guarantee that drainage tube 6 can also realized easily across chuck with Grouting Pipe 8 with it simultaneously
Seamless combination, pulling out 8 rear slurry of Grouting Pipe will not flow back.
The front chuck 2 and 4 outer circle of rear chuck is equipped with the fixing groove 10 of annular, and 3 both ends of cloth bag pass through annular snap band 7
It is fixed in the fixing groove 10 of front chuck 2 and rear chuck 4；Such structure connection is reliable, when pressure is higher in avoidable cloth bag 3,
Cloth bag 3 is detached from front chuck 2 and rear chuck 4.
Non-return valve (being not drawn into figure) is set on the Grouting Pipe socket 12 of the rear chuck 4, non-return valve and rear chuck 4 one
It is body formed, it without specially connecting, can more efficiently prevent from after pulling out Grouting Pipe 8, sealing of hole slurry reflux.
A kind of mash gas pumping drilling method for sealing, includes the following steps:
(a) according to the data parameters in coal seam, construction forms drilling 13；
(b) gas drainage in quick coupling and the operation field drilling 13 that drainage device is passed through 6 front end of drainage tube
Pipe connection connects new section gas drainage pipe in the rear end of drainage device in the same way；
(c) slide backward in rear chuck 4 to the gas drainage pipe newly accessed, by all gas drainage pipes connected to
It is pushed in drilling 13；The gas drainage pipe for continuing to access a new section, continues to slide backward chuck 4；It operates repeatedly, until cloth
Bag 3 is straightened；
(d) after Grouting Pipe 8 being inserted into the Grouting Pipe socket 12 in rear chuck 4, entire hole sealing device is sent into plan
Sealing section, then Grouting Pipe 8 is accessed into grouting system；
(e) prepare sealing material and to start slip casting, when reaching the grouting pressure of setting, by Grouting Pipe 8 and hole sealing device and
Grouting equipment is detached from；
(f) Grouting Pipe 8, grouting pump are arranged and is cleaned, in case next time uses.
The sealing material is the thick slurry mixed by sealing of hole powder and water according to 1:1.5~1:2, sealing of hole powder by
Parts by weight are 90~100 parts of portland cement, 0.5~1 part of quick lime, 0.15~0.3 part of iron powder and oxide mixing
Object, 0.3~0.6 part of magnesium powder, 8~15 parts of sodium metasilicate composition, portland cement are the main component of sealing of hole powder, raw stone
Ash, iron powder and oxide mixture, magnesium powder generate hydrogen and dilatancy crystal hydroxide as swelling agent during the reaction
Magnesium, the volume contraction generated after effective compensation hydrated cementitious, and make material that there is good dilatancy, during the reaction
Water is consumed, the setting time of material is shortened；Sodium metasilicate further shortens the setting time of slurries as accelerator.Institute
The sealing material percentage of water loss stated is low, starts reaction expansion after half an hour, can seal real drilling (particularly with horizontal almost horizontal
Drilling envelope is real reliable), the presetting period is that can start gas drainage after 2 hours, slip casting 24 hours.Using the sealing of hole slurries
When sealing of hole, grouting pressure is less than 0.5MPa, has prevented the risk of operations involving high pressure, process efficiency is also than using other sealing of hole slurries
The process efficiency of sealing of hole is high.
After the sealing material solidification, expansion multiple is 1.2~2 times, compression strength 35MPa；It can guarantee effectively
Ground blocks gas pre-drainage drilling and surrounding crack, and guarantees the permanent and stability of sealing of hole.
Sealing section is 8 meters~15 meters at a distance from aperture, using hole sealing device and method of the invention in this position sealing of hole,
It can satisfy the working conditions such as crustal stress, coal strength.
Claims (8)
1. a kind of mash gas pumping drilling method for sealing, used hole sealing device includes cloth bag (3), front chuck (2), rear chuck
(4) it is made with drainage tube (6), the cloth bag (3) main body of mesh number of 30~40 elastic thin-wall poromerics, cloth bag (3)
Front end is fixed on front chuck (2), rear end is fixed on rear chuck (4)；Drainage tube (6) front end pass through front chuck (2),
Rear end passes through rear chuck (4), and front chuck (2) is fixedly connected with drainage tube (6), and rear chuck (4) and drainage tube (6) sealing sliding connect
It connects, drainage tube (6) both ends are quick pipe connecting header structure；Rear chuck (4) is equipped with axial Grouting Pipe socket (12), and feature exists
In including the following steps:
(a) according to the data parameters in coal seam, construction forms drilling (13)；
(b) gas drainage in quick coupling and the operation field drilling (13) that drainage device is passed through drainage tube (6) front end
Pipe connection connects new section gas drainage pipe in the rear end of drainage device in the same way；
(c) it slides backward in rear chuck (4) to the gas drainage pipe newly accessed, by all gas drainage pipes connected to brill
It is pushed in hole (13)；The gas drainage pipe for continuing to access a new section, continues to slide backward chuck (4)；It operates repeatedly, until
Cloth bag (3) is straightened；
(d) after Grouting Pipe (8) being inserted into the Grouting Pipe socket (12) on rear chuck (4), entire hole sealing device is sent into and is planned
Sealing section, then by Grouting Pipe (8) access grouting system；
(e) prepare sealing material and start slip casting, when reaching the grouting pressure of setting, by Grouting Pipe (8) and hole sealing device and note
Equipment is starched to be detached from；
(f) Grouting Pipe (8), grouting pump are arranged and is cleaned, in case next time uses.
2. a kind of mash gas pumping drilling method for sealing according to claim 1, it is characterized in that: the sealing material is served as reasons
The thick slurry that sealing of hole powder and water are mixed according to 1:1.5~1:2, the silicate that sealing of hole powder is 90~100 parts by parts by weight
Cement, 0.5~1 part of quick lime, 0.15~0.3 part of iron powder and oxide mixture, 0.3~0.6 part of magnesium powder, 8~15
The sodium metasilicate composition of part, portland cement are the main component of sealing of hole powder, quick lime, iron powder and oxide mixture, magnesium powder
As swelling agent, sodium metasilicate is as accelerator.
3. a kind of mash gas pumping drilling method for sealing according to claim 2, it is characterized in that: the sealing material solidifies
Afterwards, expansion multiple is 1.2~2 times, compression strength 35MPa.
4. a kind of mash gas pumping drilling method for sealing according to claim 3, it is characterized in that: sealing section is at a distance from aperture
It is 8 meters~15 meters.
5. a kind of mash gas pumping drilling method for sealing according to claim 1, it is characterized in that: the drainage tube (6) is
Both ends set the special extraction short tube of hickey.
6. a kind of mash gas pumping drilling method for sealing according to claim 1 or 5, it is characterized in that: the front chuck (2)
It is made of rubber with rear chuck (4), front chuck (2) is solid by two circular protrusion structures (11) being arranged on its hollow hole hole wall
It is scheduled on drainage tube (6).
7. a kind of mash gas pumping drilling method for sealing according to claim 6, it is characterized in that: the front chuck (2) and
Rear chuck (4) outer circle is equipped with the fixing groove (10) of annular, and cloth bag (3) both ends are fixed on front chuck (2) by annular snap band (7)
In the fixing groove (10) of rear chuck (4).
8. a kind of mash gas pumping drilling method for sealing according to claim 7, it is characterized in that: the rear chuck (4)
Non-return valve is set on Grouting Pipe socket (12), and non-return valve and rear chuck (4) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710205746.XA CN106968633B (en) | 2017-03-31 | 2017-03-31 | Gas extraction drilling and hole sealing device and hole sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710205746.XA CN106968633B (en) | 2017-03-31 | 2017-03-31 | Gas extraction drilling and hole sealing device and hole sealing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106968633A CN106968633A (en) | 2017-07-21 |
| CN106968633B true CN106968633B (en) | 2019-06-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710205746.XA Active CN106968633B (en) | 2017-03-31 | 2017-03-31 | Gas extraction drilling and hole sealing device and hole sealing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106968633B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101483A (en) * | 2017-12-26 | 2018-06-01 | 阳泉煤业（集团）有限责任公司 | It is a kind of for early-strength cement base sealing material of gas pumping and preparation method thereof |
| CN110685638A (en) * | 2019-11-07 | 2020-01-14 | 周春雷 | New two-plug one-injection hole packer |
| CN111550281B (en) * | 2020-05-11 | 2021-07-16 | 平顶山天安煤业股份有限公司 | Drilling and hole sealing structure for coal mine gas drainage |
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| KR20010044812A (en) * | 2001-03-27 | 2001-06-05 | 임철웅 | Net bag type fiber-concrete pile and construction method thereof |
| CN201241344Y (en) * | 2008-08-05 | 2009-05-20 | 中国京冶工程技术有限公司 | Controllable capsule type expansion device |
| CN104533336A (en) * | 2014-12-30 | 2015-04-22 | 华北科技学院 | Process and device for pre-grouting rubber matrix to seal soft coal seam gas drainage borehole |
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| CN204920900U (en) * | 2015-09-16 | 2015-12-30 | 中国矿业大学 | Horizontal hole reaches and delays angling hole hole sealing device in pit |
| CN204920895U (en) * | 2015-07-07 | 2015-12-30 | 河南省煤炭科学研究院有限公司 | Scalable quick sealed hole sealing device |
| CN105840134A (en) * | 2016-04-08 | 2016-08-10 | 河南理工大学 | Single-bag grouting hole sealing device for upward crossing boreholes and hole sealing method adopting single-bag grouting hole sealing device |
-
2017
- 2017-03-31 CN CN201710205746.XA patent/CN106968633B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010044812A (en) * | 2001-03-27 | 2001-06-05 | 임철웅 | Net bag type fiber-concrete pile and construction method thereof |
| CN201241344Y (en) * | 2008-08-05 | 2009-05-20 | 中国京冶工程技术有限公司 | Controllable capsule type expansion device |
| CN104533336A (en) * | 2014-12-30 | 2015-04-22 | 华北科技学院 | Process and device for pre-grouting rubber matrix to seal soft coal seam gas drainage borehole |
| CN204729047U (en) * | 2015-05-06 | 2015-10-28 | 河南省瓦安矿用设备有限公司 | A kind of rich water boring pouch slip casting type hole packer |
| CN204920895U (en) * | 2015-07-07 | 2015-12-30 | 河南省煤炭科学研究院有限公司 | Scalable quick sealed hole sealing device |
| CN204920900U (en) * | 2015-09-16 | 2015-12-30 | 中国矿业大学 | Horizontal hole reaches and delays angling hole hole sealing device in pit |
| CN105840134A (en) * | 2016-04-08 | 2016-08-10 | 河南理工大学 | Single-bag grouting hole sealing device for upward crossing boreholes and hole sealing method adopting single-bag grouting hole sealing device |
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| CN106968633A (en) | 2017-07-21 |
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Address after: No. 1, Tongshan University Road, Xuzhou, Jiangsu Province, Jiangsu Applicant after: China University of Mining & Technology Address before: 221000 Xuzhou University Road, Jiangsu, No. 1 Applicant before: China University of Mining & Technology |
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Effective date of registration: 20171226 Address after: No. 1, Tongshan University Road, Xuzhou, Jiangsu Province, Jiangsu Applicant after: China University of Mining & Technology Applicant after: The large Mine Safety Technology of Xuzhou chats and equipment research and development centre Address before: No. 1, Tongshan University Road, Xuzhou, Jiangsu Province, Jiangsu Applicant before: China University of Mining & Technology |
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