CN202884290U - 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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- CN202884290U CN202884290U CN 201220491324 CN201220491324U CN202884290U CN 202884290 U CN202884290 U CN 202884290U CN 201220491324 CN201220491324 CN 201220491324 CN 201220491324 U CN201220491324 U CN 201220491324U CN 202884290 U CN202884290 U CN 202884290U
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Abstract
The utility model relates to a gas draining pipe, in particular to a structure of a duplex pipe for gas draining and hole sealing by grouting, and belongs to the technical field of the gas draining pipe for a 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 parallel with each other, and the gas draining pipe and the grouting pipe are arranged in the same direction and are attached to each other and connected into a whole. The application method of the duplex pipe is that a pipe mouth of the grouting pipe is plugged by a rubber rod at an inserting end of the duplex pipe for gas draining and hole sealing by grouting, one or more grouting holes are drilled in a pipe wall of the grouting pipe, and the hole diameter of the grouting hole is the same as the internal diameter of the grouting pipe. The other end of the grouting pipe is connected with a quantitative grouting pump, so that grouting liquid is enabled to enter a gap between the outer side of the draining pipe and the inner wall of a draining drill hole from the grouting hole of the grouting pipe. The duplex pipe for gas draining and hole sealing by grouting has the advantages of being not only simple in structure, capable of being shaped once on an extruder and convenient to manufacture but also convenient to use, capable of greatly simplifying a subsequent hole sealing construction craft and good in gas tightness.
Description
Technical field
The utility model relates to a kind of gas drainage pipe, and 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 using method of described twin-tube, belongs to the coal mine gas drainage pipe technical field.
Background technique
China's coal-mine is along with the continuous extension of mining depth and the increasing of mining rate, and mine gas emission rate is corresponding increase also, cause the Gas Disaster accident especially coal and Gas Outburst disaster 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 from now on very important work.The factor that affects the gas pumping effect is a lot, all affects the extracting result of gas such as the position in drilling depth, pore size, extraction hole, the density in extraction hole etc.
At present gas drainage pipe only is used for gas extraction, at first in boring, place gas drainage 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 rear its contraction of cement is larger, and the sealing of hole effect is bad; 2) cement slurry polyurethane compound hole sealing: at first dip in the polyurethane slurries at the two ends at needs sealing position with towel plug is set, bury slurry injection pipe underground again and carry out grout pouring, 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 or slip casting machine injection hole sealing, because the gap between gas drainage 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 in addition slurry injection pipe by the slip casting machine injection hole sealing, all be difficult to extend into along the gap between gas drainage pipe and the boring depths of boring, can't guarantee hole sealing depth and length.
Because defective and the backwardness of the sealing of hole construction process that generally adopt at present in the colliery cause gas extraction concentration low, extracting result is undesirable.
Summary of the invention
The purpose of this utility model is the defective that overcomes the sealing of hole construction process that generally adopts in present colliery, gas drainage pipe and slurry injection pipe are united two into one, a kind of gas extraction and injection hole sealing twin-tube are provided, except the function with gas drainage pipe, the function that has simultaneously injection hole sealing, simple in structure, easy to use, sealing quality is good.
For achieving the above object, the technological scheme that Bian uses is: a kind of gas extraction and injection hole sealing twin-tube, comprise gas drainage pipe and slurry injection pipe, it is characterized in that: the medial axis of described gas drainage pipe and described slurry injection pipe is parallel to each other in the same way and arranges, and described gas drainage pipe and described slurry injection pipe are connected mutually.
The internal diameter of described gas drainage pipe is greater than the external diameter of described slurry injection pipe, and described slurry injection pipe places in the pipe of described gas drainage pipe, and the outer surface of described slurry injection pipe is connected mutually with the internal surface of described gas drainage pipe.
Described slurry injection pipe places the outside of described gas drainage pipe, and mutually is connected.
The using method of described gas extraction and injection hole sealing twin-tube:
(1) in the insertion end of described gas extraction and injection hole sealing twin-tube, with the plug at end part of rubber rod with described slurry injection pipe, and bore injected hole at the tube wall of described slurry injection pipe, injected hole quantity can be one or more;
(2) at the two ends of described 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, approximately 10cm stop grouting plug of length is set;
(3) with the jammed insertion boring of the insertion end of above-mentioned gas extraction with stop grouting plug and injection hole sealing twin-tube, the other end of the slurry injection pipe that exposes is connected with grouting pump, injection slurry enters between two stop grouting plugs by 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 drainage pipe that exposes is used for gas extraction.
Good effect of the present utility model is: the axis of described gas drainage pipe and described slurry injection pipe is parallel to each other and arranges in the same way, and bonded to each other being connected consists of 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 drainage pipe is preset with the hole-sealing grouting tube 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 greatly simplify the technological problems of follow-up sealing of hole construction.Even the hole occurs slightly collapsing, as long as gas extraction and injection hole sealing twin-tube can insert boring, just can guarantee sealed borehole length and sealing quality.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, the utility model is described in further detail.
Fig. 1 is one of the utility model structural representation (slurry injection pipe places the inboard of gas drainage 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 drainage pipe) of the utility model structural representation
Fig. 4 is that the B of Fig. 3 is to structural representation.
Among the figure, 1-slurry injection pipe; 2-gas drainage pipe; 3-injected hole; 4-rubber rod.
Embodiment
Fig. 1 is one of the utility model structural representation (slurry injection pipe places the inboard of gas drainage 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 drainage pipe) of the utility model structural representation, and Fig. 4 is that the B of Fig. 3 is to structural representation.Clearly show that a kind of gas extraction of the utility model and injection hole sealing twin-tube among the figure, comprise gas drainage pipe 2 and slurry injection pipe 1, it is characterized in that: the medial axis of described gas drainage pipe 2 and described slurry injection pipe 1 is parallel to each other and arranges in the same way, and described gas drainage pipe 2 and described slurry injection pipe 1 bonded to each other being connected.Structure illustrated in figures 1 and 2 be the internal diameter of described gas drainage pipe 2 greater than the external diameter of described slurry injection pipe 1, described slurry injection pipe 1 places in the pipe of described gas drainage pipe 2, and described slurry injection pipe 1 is connected mutually with described gas drainage pipe 2.Fig. 3 and Fig. 4 show the outside that described slurry injection pipe 1 places described gas drainage pipe 2, and mutually are connected.The utility model is not only simple in structure as seen from the figure, can once be shaped on plastic extruder, makes easily.
The using method of described gas extraction injection hole sealing twin-tube:
(1) in the insertion end of described gas extraction and injection hole sealing twin-tube, to use rubber rod 4 with the plug at end part of described slurry injection pipe 1, and bore injected hole 3 at the tube wall of described slurry injection pipe 1, injected hole quantity can be one or more (Fig. 2 and Fig. 4);
(2) at the two ends of described 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, approximately 10cm stop grouting plug of length is set;
(3) with the jammed insertion boring of the insertion end of above-mentioned gas extraction with stop grouting plug and injection hole sealing twin-tube, the other end of the slurry injection pipe that exposes is connected with grouting pump, injection slurry enters between two stop grouting plugs interval by 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 drainage 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 the rock stratum broken 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 and injection hole sealing twin-tube comprise gas drainage pipe and slurry injection pipe, it is characterized in that: the medial axis of described gas drainage pipe and described slurry injection pipe is parallel to each other and arranges in the same way, and described gas drainage pipe and described slurry injection pipe are connected mutually.
2. according to claim 1 described a kind of gas extraction and injection hole sealing twin-tube, it is characterized in that: the internal diameter of described gas drainage pipe is greater than the external diameter of described slurry injection pipe, described slurry injection pipe places in the pipe of described gas drainage pipe, and the outer surface of described slurry injection pipe is connected mutually with the internal surface of described gas drainage pipe.
3. according to claim 1 described a kind of gas extraction and injection hole sealing twin-tube, it is characterized in that: described slurry injection pipe places the outside of described gas drainage pipe, and mutually is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220491324 CN202884290U (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 |
|---|---|---|---|
| CN 201220491324 CN202884290U (en) | 2012-09-25 | 2012-09-25 | Duplex pipe for gas draining and hole sealing by grouting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202884290U true CN202884290U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220491324 Expired - Fee Related CN202884290U (en) | 2012-09-25 | 2012-09-25 | Duplex pipe for gas draining and hole sealing by grouting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202884290U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829261A (en) * | 2012-09-25 | 2012-12-19 | 上海米维矿业科技有限公司 | Duplex pipe for gas draining and hole sealing by grouting |
| CN107762548A (en) * | 2017-10-13 | 2018-03-06 | 大连理工大学 | A kind of rock body quality of mine drilling transmission increasing gas closure pumping method |
-
2012
- 2012-09-25 CN CN 201220491324 patent/CN202884290U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829261A (en) * | 2012-09-25 | 2012-12-19 | 上海米维矿业科技有限公司 | Duplex pipe for gas draining and hole sealing by grouting |
| CN107762548A (en) * | 2017-10-13 | 2018-03-06 | 大连理工大学 | A kind of rock body quality of mine drilling transmission increasing gas closure pumping method |
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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: 20130417 Termination date: 20150925 |
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| EXPY | Termination of patent right or utility model |