CN203655220U - Device for sealing drill hole for gas extraction through air bag blocking and grouting under pressure - Google Patents
Device for sealing drill hole for gas extraction through air bag blocking and grouting under pressure Download PDFInfo
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- CN203655220U CN203655220U CN201320772436.3U CN201320772436U CN203655220U CN 203655220 U CN203655220 U CN 203655220U CN 201320772436 U CN201320772436 U CN 201320772436U CN 203655220 U CN203655220 U CN 203655220U
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- China
- Prior art keywords
- air bag
- drainage tube
- termination
- extraction
- pipe
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- 238000007789 sealing Methods 0.000 title claims abstract description 53
- 238000000605 extraction Methods 0.000 title abstract description 24
- 230000000903 blocking effect Effects 0.000 title abstract 3
- 239000000463 material Substances 0.000 claims description 20
- 238000005553 drilling Methods 0.000 claims description 18
- 238000005086 pumping Methods 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000003814 drug Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 210000004712 air sac Anatomy 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 9
- 239000011440 grout Substances 0.000 abstract 6
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 239000011368 organic material Substances 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 5
- 239000004814 polyurethane Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 229910010272 inorganic material Inorganic materials 0.000 description 4
- 239000011147 inorganic material Substances 0.000 description 4
- 229920002521 macromolecule Polymers 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000003818 cinder Substances 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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Abstract
The utility model relates to a device for sealing a drill hole for gas extraction through air bag blocking and grouting under pressure. The device for sealing the drill hole for gas extraction through air bag blocking and grouting under pressure is characterized by comprising extraction pipes, a first end air bag, a second end air bag, a grout outlet pipe and a grout filling pipe, the extraction pipes are composed of a first extraction pipe, a second extraction pipe and a third extraction pipe, the first extraction pipe is sleeved with the first end air bag, the first end air bag is provided with a one-way needle valve, the grout outlet pipe penetrates through the first end air bag, a one-way check valve is arranged inside the grout outlet pipe, the outer end of the grout outlet pipe is communicated with the grout filling pipe, the third extraction pipe is sleeved with the second end air bag, the second end air bag is provided with a one-way needle valve, the two ends of the second extraction pipe are connected with one end of the first extraction pipe and one end of the third extraction pipe respectively, a plurality of sieve pores used for allowing gas to flow in are formed in the other end of the third extraction pipe, and expansion agents are pre-contained in the first end air bag and the second end air bag. The device can be widely used for permanent sealing of drill holes for gas extraction of underground coal mines.
Description
Technical field
The utility model relates to a kind of hole sealing device of coal mine gas extraction drill hole, particularly about a kind of mash gas pumping drilling air bag shutoff injection hole sealing device with pressure.
Background technology
Gas pumping is one of important channel of control of coalmine gas, but because of China's condition of coal seam occurrence complexity, Completion of Drilling Hole condition is undesirable, efficiently, sealing boring is a technical barrier always closely.At present, China's coal bed gas extraction drilling and sealing technology mainly contains the macromolecule organic material sealing of holes such as inorganic material sealing of hole, the polyurethane such as mechanical type hole packer sealing of hole, cement paste and multiple material assemblage zone pressure grouting sealing of hole etc.
Mechanical type hole packer sealing of hole is had relatively high expectations to drilling quality, and the boring of sealing of hole section is necessary smooth and without collapse hole phenomenon, sealing of hole cost is high, recycles and reuses rate low, is only suitable for interim rapid hole sealing.The inorganic material sealing of holes such as cement paste easily form crescent blind area for gentle dip or nearly horizontal drilling, and light water mud solidifies rear easy contraction and generate crack, cause outside air to bleed.The macromolecule organic material sealing of holes such as polyurethane are easy to operate, but black and white material mixing post-foaming solidifies too fast, easily the situation that solidify in boring precalculated position is not sent in generation, and its mechanical property cannot provide enough support forces for boring after solidifying, cause the extraction life-span because hole wall subsides, section shrinkage distortion produces new crack and greatly reduces.Multiple material assemblage zone pressure grouting method for sealing is current main development direction, general form confined space by the beautiful organic expanded material such as loose of polyurethane, horse in two ends shutoff, again the inorganic material such as cement paste are injected wherein, make full use of that organic material reaction is fast, expansion multiple is high and inorganic material compressive resistance is high, to the large characteristic of boring supporting power, and can realize injection hole sealing with pressure, but boring innermost end adopts organic material as plug, plug still can occur, and not deliver to precalculated position be the situation that foaming and intumescing causes the not good even useless hole of sealing quality.In addition, the macromolecule organic materials such as polyurethane all have certain toxicity, can cause certain harm to workman is healthy.Therefore, be necessary to provide a kind of and can be applicable to the permanent sealing of hole operation in any sealing of hole of arbitrarily angled mash gas pumping drilling position under coal mine again without the injection hole sealing device with pressure of health hazard.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of sealing material of researching and developing by air bag expansion plugging, injection with pressure, realize extraction borehole and the positiver sealing in crack around, the thoroughly blocking-up air passage that bleeds, can be applicable to a kind of mash gas pumping drilling air bag shutoff injection hole sealing device with pressure of the permanent sealing of hole in arbitrarily angled mash gas pumping drilling any sealing of hole position under coal mine.
For achieving the above object, the utility model is taked following technical scheme: a kind of mash gas pumping drilling air bag shutoff injection hole sealing device with pressure, is characterized in that: it comprises drainage tube, the first termination air bag, the second termination air bag, outlet pipe and Grouting Pipe, described drainage tube is by the first drainage tube, the second drainage tube and the 3rd drainage tube composition, described the first termination Air sac cover is located on described the first drainage tube, and there is a unidirectional needle-valve on described the first termination air bag, the described outlet pipe that inside is provided with one way stop peturn valve runs through described the first termination air bag, and the outer end of described outlet pipe is communicated with described Grouting Pipe, described the second termination Air sac cover is located on described the 3rd drainage tube, and there is a unidirectional needle-valve on described the second termination air bag, the two ends of described the second drainage tube connect respectively one end of described the first drainage tube and described the 3rd drainage tube, and the end of described the 3rd drainage tube other end is provided with some sieve apertures for flowing into for gas, in described the first termination air bag and described the second termination air bag, be preinstalled with expansion medicament.
The outer end that described outlet pipe runs through described the first termination air bag is communicated with described Grouting Pipe by the automatic separating joint of a level pressure.
The two ends of described the second drainage tube are respectively by lead to the one end that connects described the first drainage tube and described the 3rd drainage tube always.
All the serve as reasons annular closed air bag of inside and outside materials at two layers composition of described the first termination air bag and described the second termination air bag, inner layer material is rubber, cladding material is screw thread cloth cover.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model is realized the desirable seal to sealing of hole section two ends by the efficient expansion of termination air bag, forms the annular sealed space being surrounded by termination gasbag ektexine, borehole wall, drainage tube outer wall; And be connected hole-sealing grouting material is injected to above-mentioned annular sealed space with the outlet pipe arranging on the air bag of termination by Grouting Pipe, after hole-sealing grouting material solidification, can form the powerful supporting to sealing of hole section drill hole wall, finally greatly improve drilling and sealing tightness, effectively prevent extraction later stage boring crack that creep produces.Drainage tube end is sealed with plug, and the sieve aperture that gas can only arrange by drainage tube afterbody end flows into drainage tube, effectively prevents that the foreign material such as cinder from entering obstruction extraction pipeline, finally significantly improves extracting result.The utility model without particular/special requirement, therefore can be applicable to the permanent sealing of hole of any sealing of hole of arbitrarily angled mash gas pumping drilling position under coal mine to the required boring of carrying out sealing of hole operation.2, the utility model arranges two termination air bags at hole-sealing grouting section two ends, and in the air bag of termination, insert in advance expansion medicament, inject certain water gaging hole sealing device being sent in boring forward direction air bag, expansion medicament in the air bag of termination reacts with water, the gas producing impels the efficient expansion of termination air bag timing level pressure, the macromolecule organic material foaming and intumescings such as polyurethane can effectively be solved fast, send problem not in place, and air bag expansion medicament is by quicklime 15～25 weight portions, aluminium powder 5～10 weight portions, citric acid 0.3～0.45 weight portion, calcium chloride 0.2～0.3 weight portion, sodium acid carbonate 0.2～0.3 weight portion, polyacrylamide 0.1～0.15 weight portion composition, material formulation is raw materials used is commercially available conventional material, nontoxic and with low cost.The utility model can be widely used in the permanent sealing of hole of coal mine gas extraction borehole.
Brief description of the drawings
Fig. 1 is the application state schematic diagram of the utility model device
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the utility model device comprises drainage tube 1, the first termination air bag 2, the second termination air bag 3, outlet pipe 4, Grouting Pipe 5 and straight-through 6.
Drainage tube 1 is made up of the first drainage tube 7, the second drainage tube 8 and the 3rd drainage tube 9, the first termination air bag 2 is set on the first drainage tube 7, and on the first termination air bag 2, there is a unidirectional needle-valve 10, the outlet pipe 4 that inside is provided with one way stop peturn valve (not shown) runs through the first termination air bag 2, and the outer end of outlet pipe 4 is communicated with Grouting Pipe 5 by the automatic separating joint 11 of a level pressure.The second termination air bag 3 is set on the 3rd drainage tube 9, and on the second termination air bag 3, also has a unidirectional needle-valve 10.The two ends of the second drainage tube 8 are respectively by one end of straight-through 6 connection first drainage tubes 7 and the 3rd drainage tube 9, and the end of the 3rd drainage tube 9 other ends is provided with some sieve apertures 12 for flowing into for gas.Straight-through 6 is those skilled in the art's common components, therefore no longer describe in detail.
All the serve as reasons annular closed air bag of inside and outside materials at two layers composition of the first termination air bag 2 and the second termination air bag 3, inner layer material is made up of the good top-quality rubber of tightness, and cladding material is the screw thread cloth cover with certain ductility.In the first termination air bag 2 and the second termination air bag 3, add in advance expansion medicament, expansion medicament is the expansion component being made up of quicklime 15～25 weight portions and aluminium powder 5～10 weight portions and mixes the regulation and control component being made up of citric acid 0.3～0.45 weight portion, calcium chloride 0.2～0.3 weight portion, sodium acid carbonate 0.2～0.3 weight portion, polyacrylamide 0.1～0.15 weight portion.
Adopt the method for sealing of the utility model device to comprise the following steps:
1) when site operation, construction drill in coal body 13, pore-forming proposes after drilling tool, the cinder coal dust in boring 14 to be cleaned out;
2) the first termination air bag 2 and the second termination air bag 3 are set in respectively on the first drainage tube 7 and the 3rd drainage tube 9, and be connected to according on the second drainage tube 8 of actual sealing of hole parameter (comprising hole sealing depth and sealed borehole length) designated length by straight-through 6 respectively, the end of the 3rd drainage tube 9 is sealed with plug, so that when the utility model device is put into boring 14 and carries out extraction operation, the foreign material such as cinder cannot enter the extraction system of stopping up by drainage tube, Gas-Flow can only flow into drainage tube 1 by sieve aperture 12, one Grouting Pipe 5 is communicated with by the automatic separating joint 11 of level pressure with the outlet pipe 4 of prepackage on the first termination air bag 2, by unidirectional needle-valve 10 respectively to injected water 200～300 weight portions in the first termination air bag 2 and the second termination air bag 3, then the utility model device is sent into precalculated position in boring 14,
3) medicament that expands in the first termination air bag 2 and the second termination air bag 3 impels air bag to expand to reach (pressure condition is known according to the amount of the first termination air bag 2 and interior the added expansion medicament of the second termination air bag 3) after certain pressure for reacting with water, by Grouting Pipe 5, outlet pipe 4 injects hole-sealing grouting material by the first termination air bag 2 outer walls, 14 hole walls of holing, in the annular sealed space that the second drainage tube 8 outer walls and the second termination air bag 3 outer walls form, until reaching (predetermined pressure is that the required grouting pressure of the sealing of hole through calculating is determined) after predetermined pressure in annular sealed space, Grouting Pipe 5 with outlet pipe 4 automatic separation the in level pressure automatic separating joint 11 places, drainage tube 1 in the utility model device, the first termination air bag 2, the second termination air bag 3, outlet pipe 4 and straight-through 6 is all stayed in boring 14 and is completed sealing of hole, finally clean grouting equipment and scene, for sealing of hole is ready next time.
The various embodiments described above are only for illustrating the utility model; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (5)
1. a mash gas pumping drilling air bag shutoff injection hole sealing device with pressure, is characterized in that: it comprises drainage tube, the first termination air bag, the second termination air bag, outlet pipe and Grouting Pipe;
Described drainage tube is by the first drainage tube, the second drainage tube and the 3rd drainage tube composition, described the first termination Air sac cover is located on described the first drainage tube, and there is a unidirectional needle-valve on described the first termination air bag, the described outlet pipe that inside is provided with one way stop peturn valve runs through described the first termination air bag, and the outer end of described outlet pipe is communicated with described Grouting Pipe, described the second termination Air sac cover is located on described the 3rd drainage tube, and there is a unidirectional needle-valve on described the second termination air bag, the two ends of described the second drainage tube connect respectively one end of described the first drainage tube and described the 3rd drainage tube, and the end of described the 3rd drainage tube other end is provided with some sieve apertures for flowing into for gas, in described the first termination air bag and described the second termination air bag, be preinstalled with expansion medicament.
2. a kind of mash gas pumping drilling air bag as claimed in claim 1 shutoff injection hole sealing device with pressure, is characterized in that: the outer end that described outlet pipe runs through described the first termination air bag is communicated with described Grouting Pipe by the automatic separating joint of a level pressure.
3. a kind of mash gas pumping drilling air bag as claimed in claim 1 shutoff injection hole sealing device with pressure, is characterized in that: the two ends of described the second drainage tube are respectively by lead to the one end that connects described the first drainage tube and described the 3rd drainage tube always.
4. a kind of mash gas pumping drilling air bag as claimed in claim 2 shutoff injection hole sealing device with pressure, is characterized in that: the two ends of described the second drainage tube are respectively by lead to the one end that connects described the first drainage tube and described the 3rd drainage tube always.
5. a kind of mash gas pumping drilling air bag shutoff injection hole sealing device with pressure as claimed in claim 1 or 2 or 3 or 4, it is characterized in that: all the serve as reasons annular closed air bag of inside and outside materials at two layers composition of described the first termination air bag and described the second termination air bag, inner layer material is rubber, and cladding material is screw thread cloth cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772436.3U CN203655220U (en) | 2013-11-28 | 2013-11-28 | Device for sealing drill hole for gas extraction through air bag blocking and grouting under pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772436.3U CN203655220U (en) | 2013-11-28 | 2013-11-28 | Device for sealing drill hole for gas extraction through air bag blocking and grouting under pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655220U true CN203655220U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320772436.3U Expired - Fee Related CN203655220U (en) | 2013-11-28 | 2013-11-28 | Device for sealing drill hole for gas extraction through air bag blocking and grouting under pressure |
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| Country | Link |
|---|---|
| CN (1) | CN203655220U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884624A (en) * | 2017-03-29 | 2017-06-23 | 淮南矿业(集团)有限责任公司 | A kind of area of stress concentration crushed zone drilling and sealing device and method for sealing |
| CN108060903A (en) * | 2017-11-24 | 2018-05-22 | 山东科技大学 | Coal-bed gas pressure measurement dynamic self-balance pressurization hole sealing device and method |
| CN108180024A (en) * | 2018-03-07 | 2018-06-19 | 中铁二院昆明勘察设计研究院有限责任公司 | A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction |
| CN113790081A (en) * | 2021-09-16 | 2021-12-14 | 山西晋煤集团技术研究院有限责任公司 | Replacement filling method for coal seam roof caving region |
-
2013
- 2013-11-28 CN CN201320772436.3U patent/CN203655220U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884624A (en) * | 2017-03-29 | 2017-06-23 | 淮南矿业(集团)有限责任公司 | A kind of area of stress concentration crushed zone drilling and sealing device and method for sealing |
| CN108060903A (en) * | 2017-11-24 | 2018-05-22 | 山东科技大学 | Coal-bed gas pressure measurement dynamic self-balance pressurization hole sealing device and method |
| CN108180024A (en) * | 2018-03-07 | 2018-06-19 | 中铁二院昆明勘察设计研究院有限责任公司 | A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction |
| CN113790081A (en) * | 2021-09-16 | 2021-12-14 | 山西晋煤集团技术研究院有限责任公司 | Replacement filling method for coal seam roof caving region |
| CN113790081B (en) * | 2021-09-16 | 2023-12-01 | 山西晋煤集团技术研究院有限责任公司 | Replacement filling method for caving region of coal seam roof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 |
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| CF01 | Termination of patent right due to non-payment of annual fee |