CN201687511U - Wall-protecting shock tube of extraction drill hole - Google Patents
Wall-protecting shock tube of extraction drill hole Download PDFInfo
- Publication number
- CN201687511U CN201687511U CN2009202993530U CN200920299353U CN201687511U CN 201687511 U CN201687511 U CN 201687511U CN 2009202993530 U CN2009202993530 U CN 2009202993530U CN 200920299353 U CN200920299353 U CN 200920299353U CN 201687511 U CN201687511 U CN 201687511U
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- China
- Prior art keywords
- pipe
- extraction
- drill hole
- wall
- utility
- Prior art date
- 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
- 238000000605 extraction Methods 0.000 title claims abstract description 28
- 230000035939 shock Effects 0.000 title abstract 3
- 238000007789 sealing Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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Abstract
The utility model discloses a wall-protecting shock tube of an extraction drill hole, which is characterized in that eyelets are arranged on a side wall of a pipe fitting of a hole-protecting tube. The wall-protecting shock tube is embedded in the drill hole after the extraction drill hole construction is finished, thereby reducing the blocking of the drill hole caused by collapsed holes, meanwhile increasing the contact area of the drill hole and coals and improving the extraction effect of the extraction drill hole.
Description
Technical field
The utility model relates to a kind of being applied in and stops up the pipe fitting of raising extraction borehole extraction effect for reducing boring after down-hole extraction borehole construction finishes.
Background technology
In the coal mine excavation process, for reducing coal seam gas-bearing capacity, construction drill penetrates the coal seam, carries out gas pumping.After the extraction borehole construction, ponding appears easily, phenomenon such as the hole that collapses, cause boring to stop up, have in boring and be lowered to the guard aperture pipe, this guard aperture tube wall sealing, just managing front end is the extraction mouth of pipe, but largely reduced the contact area of boring and coal, directly influence the gas pumping effect, prolong and find time in advance, seriously restrict the development speed of mine safety, High-efficient Production.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of extraction borehole retaining wall floral tube is provided, by existing extraction borehole guard aperture pipe is improved, increase the contact area of boring and coal, improving the extraction effect of extraction borehole.
The utility model technical solution problem adopts following technical scheme:
The design feature of the utility model extraction borehole retaining wall floral tube is on the pipe fitting sidewall of guard aperture pipe eyelet to be set.
Design feature of the present utility model also is:
It is the more piece pipe that described guard aperture pipe is set, and the front end of first pipe joint is tapered, is the sealing mouth of pipe; Each pipe joint between with union formation be threaded, be perforation between each pipe joint thereafter.
The diameter that described eyelet is set is 12-18mm.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, on the utility model pipe fitting sidewall eyelet the contact area that has increased boring and coal is set, as calculated, if the length of guard aperture pipe is 3m, diameter 50mm, sectional area only are 1962.5mm
2, and when leaving on the guard aperture pipe after 36 diameters are the eyelet of 16mm, total sectional area reaches 7234mm
2, therefore greatly improved extraction single hole extraction amount, reduced in advance and found time.
2, the utility model is simple in structure, and effect is remarkable, the equipment handling ease.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model user mode schematic diagram.
Number in the figure: 1 guard aperture pipe, 1a first pipe joint, 2 eyelets, 3 unions.
Below pass through the specific embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
The specific embodiment
Referring to Fig. 1, Fig. 2, in the present embodiment, on the pipe fitting sidewall of guard aperture pipe 1, eyelet 2 is set.
According to the degree of depth of boring, it is the more piece pipe that the guard aperture pipe is set, and the front end of the first pipe joint 1a is tapered, is the sealing mouth of pipe; Each pipe joint between with union 3 formation be threaded, be perforation between each pipe joint thereafter.
The diameter that each eyelet 2 is set is 12-18mm.
In concrete the enforcement, after the extraction borehole construction finished, to the omnidistance guard aperture pipe down of holing, the tapered sealing of the front end of first pipe joint utilized union 3 that each pipe joint is thereafter connected one by one, was lowered to bottom, hole in boring until the first pipe joint 1a.This form of structure can keep holing unobstructed on the one hand, guarantees the moulding of holing, and it is blocked to avoid holing; Can increase the contact area of boring and coal on the other hand greatly.
Field trial shows that the guard aperture pipe compares in use utility model and the prior art, guaranteeing that both extraction change in concentration are little under the tight prerequisite of sealing of hole, but single hole extraction amount difference is bigger.The extraction flow maximum of the utility model in No. 1 hole reaches 0.71m
3/ min, average out to 0.5m
3/ min.And in the existing technology pipe that protects also of eye not with holes though extraction concentration is also than higher in No. 2 holes, the extraction flow is very low, maximum only is 0.11m
3/ min, average out to 0.07m
3/ min, the average discharge in No. 1 hole are 7 times of No. 2 holes, and the utility model extraction effect is extremely remarkable.
Claims (3)
1. extraction borehole retaining wall floral tube is characterized in that being provided with eyelet (2) on the pipe fitting sidewall of guard aperture pipe (1).
2. extraction borehole retaining wall floral tube according to claim 1, it is characterized in that being provided with described guard aperture pipe is the more piece pipe, the front end of first pipe joint (1a) is tapered, is the sealing mouth of pipe; Each pipe joint between with union (3) formation be threaded, be perforation between each pipe joint thereafter.
3. extraction borehole retaining wall floral tube according to claim 1, the diameter that it is characterized in that being provided with described eyelet (2) is 12-18mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202993530U CN201687511U (en) | 2009-12-17 | 2009-12-17 | Wall-protecting shock tube of extraction drill hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202993530U CN201687511U (en) | 2009-12-17 | 2009-12-17 | Wall-protecting shock tube of extraction drill hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687511U true CN201687511U (en) | 2010-12-29 |
Family
ID=43375796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202993530U Expired - Fee Related CN201687511U (en) | 2009-12-17 | 2009-12-17 | Wall-protecting shock tube of extraction drill hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687511U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587961A (en) * | 2012-04-10 | 2012-07-18 | 中国矿业大学 | Feeding method and device for hole protecting pipe for soft coal seam gas extraction hole |
| CN102606190A (en) * | 2011-01-20 | 2012-07-25 | 淮南矿业(集团)有限责任公司 | Method and device for using downward crossing hole to eliminate outburst in mining of coal mine |
| CN102619476A (en) * | 2012-04-10 | 2012-08-01 | 中国矿业大学 | Pipe body structure of step type hole protecting pipe for gas extraction hole in soft coal bed |
| CN102747953A (en) * | 2012-03-06 | 2012-10-24 | 中国矿业大学 | Multiple step type drilling and protecting integrated system and process for soft coal seam |
| CN109899005A (en) * | 2019-03-22 | 2019-06-18 | 淮南矿业(集团)有限责任公司 | Casing for drilling gas extraction |
| CN112593906A (en) * | 2020-12-17 | 2021-04-02 | 辽宁工程技术大学 | Coal body heating device and method for promoting gas extraction |
-
2009
- 2009-12-17 CN CN2009202993530U patent/CN201687511U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606190A (en) * | 2011-01-20 | 2012-07-25 | 淮南矿业(集团)有限责任公司 | Method and device for using downward crossing hole to eliminate outburst in mining of coal mine |
| CN102747953A (en) * | 2012-03-06 | 2012-10-24 | 中国矿业大学 | Multiple step type drilling and protecting integrated system and process for soft coal seam |
| CN102747953B (en) * | 2012-03-06 | 2014-07-30 | 中国矿业大学 | Multiple step type drilling and protecting integrated system and process for soft coal seam |
| CN102587961A (en) * | 2012-04-10 | 2012-07-18 | 中国矿业大学 | Feeding method and device for hole protecting pipe for soft coal seam gas extraction hole |
| CN102619476A (en) * | 2012-04-10 | 2012-08-01 | 中国矿业大学 | Pipe body structure of step type hole protecting pipe for gas extraction hole in soft coal bed |
| CN102619476B (en) * | 2012-04-10 | 2014-03-26 | 中国矿业大学 | Pipe body structure of step type hole protecting pipe for gas extraction hole in soft coal bed |
| CN109899005A (en) * | 2019-03-22 | 2019-06-18 | 淮南矿业(集团)有限责任公司 | Casing for drilling gas extraction |
| CN109899005B (en) * | 2019-03-22 | 2020-03-10 | 淮南矿业(集团)有限责任公司 | Casing for borehole gas extraction |
| CN112593906A (en) * | 2020-12-17 | 2021-04-02 | 辽宁工程技术大学 | Coal body heating device and method for promoting gas extraction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20121217 |