CN102829261A - Duplex pipe for gas draining and hole sealing by grouting - Google Patents
Duplex pipe for gas draining and hole sealing by grouting Download PDFInfo
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- CN102829261A CN102829261A CN2012103599398A CN201210359939A CN102829261A CN 102829261 A CN102829261 A CN 102829261A CN 2012103599398 A CN2012103599398 A CN 2012103599398A CN 201210359939 A CN201210359939 A CN 201210359939A CN 102829261 A CN102829261 A CN 102829261A
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Abstract
The invention relates to a gas draining pipe, and in particular to a structure of a duplex pipe for gas draining and hole sealing by grouting, belonging to the technical field of the gas draining pipe for coal mine. The duplex pipe is characterized in that the central axis of the gas draining pipe and the central axis of a grouting pipe are arranged in parallel in the same direction; the gas draining pipe and the grouting pipe are clung to each other and are connected integrally; the duplex pipe is operated by a method as follows: the orifice of the grouting pipe is plugged by a rubber rod at the plugging end of the duplex pipe; one or more grouting holes are drilled in the wall of the grouting pipe; the aperture of the grouting hole is the same as the internal diameter of the grouting pipe; and the other end of the grouting pipe is connected with a quantitative grouting pump, so that grouting liquid enters a gap between the outer side of the draining pipe and the inner wall of a drilled draining hole from the grouting hole of the grouting pipe. The duplex pipe for gas draining and hole sealing by grouting provided by the invention has the beneficial effects that the duplex pipe has a simple structure, can be formed in one step on an extruder, and is convenient to manufacture; and the duplex pipe also has the beneficial effects that the duplex pipe is convenient to operate, the subsequent hole sealing construction process is greatly simplified, and the duplex pipe has good gas tightness.
Description
Technical field
The present invention relates to a kind of gas extraction pipe, particularly a kind of have the gas extraction of gas extraction and injection hole sealing dual functions and the structure of injection hole sealing twin-tube, and the method for using of said twin-tube, belongs to gas discharge in mine Manifold technology field.
Background technique
China's coal-mine is along with the continuous extension of mining depth and the increasing of mining rate, the also corresponding increase of mine gas emission rate, cause the gas disaster accident especially coal and the outstanding disaster of gas be on the rise, situation of production is still very severe.Gas extraction is the basic means of gas development and use, also is an important safety measure of highly gassy mine simultaneously.Therefore, adhere to arranging more and develop simultaneously, further improve the gas pumping effect, remain crucial work from now on.The factor that influences the gas pumping effect is a lot, all affects the extraction effect of gas such as the position in drilling depth, pore size, extraction hole, the density in extraction hole or the like.
At present the gas extraction pipe only is used for gas extraction, at first in boring, place the gas extraction pipe after, also need in extraction boring, to settle slurry injection pipe separately, carry out the shutoff of gas extraction hole, process step is numerous and diverse.Undoubtedly, in the process of gas pumping, sealing of hole is a vital link, and the quality of sealing quality directly has influence on the effect of gas pumping.
The shutoff of gas extraction hole mainly contains following several method: 1) cement slurry sealing of hole: fixed its contraction of back of cement is bigger, and the sealing of hole effect is bad; 2) cement slurry polyurethane compound hole sealing: at first dip in the polyurethane slurries with towel plug is set at the two ends at needs sealing position; Bury slurry injection pipe again underground and carry out the cement slurry perfusion, construction finishes 48 hours ability mash gas extractions, complex process; Long in time limit, and transportation by lighter and cost of labor are higher; 3) polyurethane foam material sealing of hole: no matter manual sealing of hole still is the slip casting machine injection hole sealing; Because the gap between gas extraction pipe and the boring is less; Usually between 15～20mm, and still have the part residue in the boring, no matter speckle with the towel of slurries or establish slurry injection pipe in addition by the slip casting machine injection hole sealing; All be difficult to extend into the depths of boring, can't guarantee hole sealing depth and length along the gap between gas extraction pipe and the boring.
Because the defective and the backwardness of the sealing of hole construction process that generally adopt at present in the colliery cause gas pumping concentration low, the extraction effect is undesirable.
Summary of the invention
The objective of the invention is to overcome the defective of the sealing of hole construction process that generally adopts in present colliery; Gas extraction pipe and slurry injection pipe are united two into one; A kind of gas extraction and injection hole sealing twin-tube are provided, except that function, have the function of injection hole sealing simultaneously with gas extraction pipe; Simple in structure, easy to use, sealing quality is good.
To achieve these objectives, preclude the use of the technical solution is: A gas drainage and grouting sealing twin tubes, including gas drainage pipes and grouting pipe, wherein: said gas drainage tube and the injection slurry pipe central axis parallel to each other in the same direction is set, and said gas drainage pipe and the grouting pipe each piece.
The internal diameter of said gas extraction pipe is greater than the external diameter of said slurry injection pipe, and said slurry injection pipe places in the pipe of said gas extraction pipe, and the internal surface of the outer surface of said slurry injection pipe and said gas extraction pipe fuses each other.
Said slurry injection pipe places the outside of said gas extraction pipe, and fuses each other.
The method for using of said gas extraction and injection hole sealing twin-tube:
(1) in the insertion end of said gas extraction and injection hole sealing twin-tube, with the plug at end part of rubber rod with said slurry injection pipe, and on the tube wall of said slurry injection pipe, bore injected hole, injected hole quantity can be one or more;
(2) at the two ends of said gas extraction and injection hole sealing twin-tube, twine with the polyurethane porous elastomers, make the external diameter of polyurethane porous elastomers be slightly larger than the internal diameter of boring, the about 10cm stop grouting plug of length is set;
(3) with the gas extraction of above-mentioned band stop grouting plug and the jammed insertion boring of insertion end of injection hole sealing twin-tube; The other end of the slurry injection pipe that exposes is connected with grouting pump; Injection slurry gets between two stop grouting plugs through the slip casting of slurry injection pipe injected hole; Fill in the slit between twin-tube and the boring, form hermetic seal; The other end of the gas extraction pipe that exposes is used for gas extraction.
Good effect of the present invention is: the axis of said gas extraction pipe and said slurry injection pipe is parallel to each other and is provided with in the same way; And fitting each other fuses constitutes gas extraction and injection hole sealing twin-tube, not only simple in structure, can on extruder, once be shaped; Easily manufactured, and use also very convenient.One side of gas extraction pipe is preset with sealing of hole slurry injection pipe passage; Integrate gas extraction and injection hole sealing function; Therefore in rib boring, so long as any position that gas extraction and injection hole sealing twin-tube can arrive all need not to settle in addition slurry injection pipe; Can realize fixed point, multiple spot, orientation, quantitative filling, thereby simplify the technological problems of follow-up sealing of hole construction greatly.Even the hole occurs slightly collapsing,, just can guarantee sealed borehole length and sealing quality as long as gas extraction and injection hole sealing twin-tube can insert boring.Stopped owing to lose in the useless hole that cause in the hole of collapsing.As run into the rock stratum broken especially, can realize low-pressure grouting shutoff crack when cranny development enriches, thereby guarantee tightness.Greatly promoted the sealing of hole effect.
Description of drawings
Below in conjunction withDescription of drawings and embodiment are described further the present invention.
Fig. 1 is one of structural representation of the present invention (slurry injection pipe places the inboard of gas extraction pipe);
Fig. 2 is that the A of Fig. 1 is to structural representation;
Fig. 3 is two (slurry injection pipe places the outside of gas extraction pipe) of structural representation of the present invention
Fig. 4 is that the B of Fig. 3 is to structural representation.
Among the figure, 1-slurry injection pipe; 2-gas extraction pipe; 3-injected hole; The shutoff of 4-rubber rod.
Embodiment
Fig. 1 is one of structural representation of the present invention (slurry injection pipe places the inboard of gas extraction pipe), and Fig. 2 is that the A of Fig. 1 is to structural representation; Fig. 3 is two (slurry injection pipe places the outside of gas extraction pipe) of structural representation of the present invention, and Fig. 4 is that the B of Fig. 3 is to structural representation.Clearly show that a kind of gas extraction of the present invention and injection hole sealing twin-tube among the figure; Comprise gas extraction pipe 2 and slurry injection pipe 1; It is characterized in that: the medial axis of said gas extraction pipe 2 and said slurry injection pipe 1 is parallel to each other and is provided with in the same way, and said gas extraction pipe 2 fuses with said slurry injection pipe 1 mutual the applying.Structure illustrated in figures 1 and 2 is the external diameter of the internal diameter of said gas extraction pipe 2 greater than said slurry injection pipe 1, and said slurry injection pipe 1 places in the pipe of said gas extraction pipe 2, and said slurry injection pipe 1 fuses with said gas extraction pipe 2 each other.Fig. 3 and Fig. 4 show the outside that said slurry injection pipe 1 places said gas extraction pipe 2, and fuse each other.Not only simple in structure by the visible the present invention of figure, can on plastic extruder, once be shaped, make easily.
The method for using of said gas extraction injection hole sealing twin-tube:
(1) in the insertion end of said gas extraction and injection hole sealing twin-tube, with the plug at end part of rubber rod 4 with said slurry injection pipe 11, and on the tube wall of said slurry injection pipe 1, bore injected hole 3, injected hole quantity can be one or more (Fig. 2 and Fig. 4);
(2) at the two ends of said gas extraction and injection hole sealing twin-tube, twine with the polyurethane porous elastomers, make the external diameter of polyurethane porous elastomers be slightly larger than the internal diameter of boring, the about 10cm stop grouting plug of length is set;
(3) with the gas extraction of above-mentioned band stop grouting plug and the jammed insertion boring of insertion end of injection hole sealing twin-tube; The other end of the slurry injection pipe that exposes is connected with grouting pump; Injection slurry gets between two stop grouting plugs interval through the slip casting of slurry injection pipe injected hole; Fill in the slit between twin-tube and the boring, form hermetic seal; The other end of the gas extraction pipe that exposes is used for gas extraction.
This shows; Boring to various different amount; As long as gas extraction and injection hole sealing twin-tube can insert boring, can both guarantee sealed borehole length and sealing quality, as run into rock stratum fragmentation especially, also can realize low-pressure grouting shutoff crack when cranny development enriches; Thereby guarantee tightness, greatly promoted the sealing of hole effect.
Claims (3)
1. a gas extraction injection hole sealing twin-tube comprises gas extraction pipe and slurry injection pipe, it is characterized in that: the medial axis of said gas extraction pipe and said slurry injection pipe is parallel to each other in the same way and is provided with, and said gas extraction pipe and said slurry injection pipe fuse each other.
2. according to the said a kind of gas extraction injection hole sealing twin-tube of claim 1; It is characterized in that: the internal diameter of said gas extraction pipe is greater than the external diameter of said slurry injection pipe; Said slurry injection pipe places in the pipe of said gas extraction pipe, and the internal surface of the outer surface of said slurry injection pipe and said gas extraction pipe fuses each other.
3. according to the said a kind of gas extraction injection hole sealing twin-tube of claim 1, it is characterized in that: said slurry injection pipe places the outside of said gas extraction pipe, and fuses each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103599398A CN102829261A (en) | 2012-09-25 | 2012-09-25 | Duplex pipe for gas draining and hole sealing by grouting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103599398A CN102829261A (en) | 2012-09-25 | 2012-09-25 | Duplex pipe for gas draining and hole sealing by grouting |
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| Publication Number | Publication Date |
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| CN102829261A true CN102829261A (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012103599398A Pending CN102829261A (en) | 2012-09-25 | 2012-09-25 | Duplex pipe for gas draining and hole sealing by grouting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850697A (en) * | 2014-03-18 | 2014-06-11 | 周春雷 | Hole packer for drawing out methane and grouting |
| CN104006230A (en) * | 2014-06-07 | 2014-08-27 | 董顺杰 | Combined water pipe for wall-mounted pure water machine |
| CN104149303A (en) * | 2014-07-23 | 2014-11-19 | 张家港市万雄机械有限公司 | Mold for producing mine gas pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294500A (en) * | 2008-05-12 | 2008-10-29 | 淮南矿业(集团)有限责任公司 | Heavy pressure slip-casting hole-sealing method for large-diameter extraction borehole |
| US7661476B2 (en) * | 2006-11-15 | 2010-02-16 | Exxonmobil Upstream Research Company | Gravel packing methods |
| CN201723245U (en) * | 2010-05-26 | 2011-01-26 | 义马煤业集团股份有限公司千秋煤矿 | Liquid injection type hole plugging device in gas drainage |
| CN102287218A (en) * | 2011-08-16 | 2011-12-21 | 贵州永聚恒丰科技发展有限公司 | Gas drainage hole-sealing device |
| CN202220617U (en) * | 2011-09-01 | 2012-05-16 | 淮南矿业(集团)有限责任公司 | Drilling extraction hole plugging device |
| CN202884290U (en) * | 2012-09-25 | 2013-04-17 | 上海米维矿业科技有限公司 | Duplex pipe for gas draining and hole sealing by grouting |
-
2012
- 2012-09-25 CN CN2012103599398A patent/CN102829261A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7661476B2 (en) * | 2006-11-15 | 2010-02-16 | Exxonmobil Upstream Research Company | Gravel packing methods |
| CN101294500A (en) * | 2008-05-12 | 2008-10-29 | 淮南矿业(集团)有限责任公司 | Heavy pressure slip-casting hole-sealing method for large-diameter extraction borehole |
| CN201723245U (en) * | 2010-05-26 | 2011-01-26 | 义马煤业集团股份有限公司千秋煤矿 | Liquid injection type hole plugging device in gas drainage |
| CN102287218A (en) * | 2011-08-16 | 2011-12-21 | 贵州永聚恒丰科技发展有限公司 | Gas drainage hole-sealing device |
| CN202220617U (en) * | 2011-09-01 | 2012-05-16 | 淮南矿业(集团)有限责任公司 | Drilling extraction hole plugging device |
| CN202884290U (en) * | 2012-09-25 | 2013-04-17 | 上海米维矿业科技有限公司 | Duplex pipe for gas draining and hole sealing by grouting |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850697A (en) * | 2014-03-18 | 2014-06-11 | 周春雷 | Hole packer for drawing out methane and grouting |
| CN103850697B (en) * | 2014-03-18 | 2015-03-11 | 周春雷 | Hole packer for drawing out methane and grouting |
| CN104006230A (en) * | 2014-06-07 | 2014-08-27 | 董顺杰 | Combined water pipe for wall-mounted pure water machine |
| CN104149303A (en) * | 2014-07-23 | 2014-11-19 | 张家港市万雄机械有限公司 | Mold for producing mine gas pipe |
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Application publication date: 20121219 |