CN202249825U - Outburst coal seam group crossing drilling device - Google Patents
Outburst coal seam group crossing drilling device Download PDFInfo
- Publication number
- CN202249825U CN202249825U CN2011203492103U CN201120349210U CN202249825U CN 202249825 U CN202249825 U CN 202249825U CN 2011203492103 U CN2011203492103 U CN 2011203492103U CN 201120349210 U CN201120349210 U CN 201120349210U CN 202249825 U CN202249825 U CN 202249825U
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- China
- Prior art keywords
- drilling
- coal seam
- seam group
- outburst coal
- drilling device
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- Expired - Fee Related
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Abstract
The utility model discloses an outburst coal seam group crossing drilling device, which comprises a round drill rod (1) and a steel strip (2), wherein the steel strip (2) is wound on the round drill rod (1); the round drill rod (1) and the steel strip (2) form a whole by a welding mode; and the steel strip (2) is wound on the round drill rod (1) in a threaded shape. By using the outburst coal seam group crossing drilling device, the problem of difficult crossing drilling construction under the condition of an outburst coal seam group can be solved, the construction under the condition that water is not returned during drilling is avoided, a high-strength orifice spraying condition during drilling construction is relieved, the drilling efficiency is improved, and safe, efficient and fast drilling of a high gas outburst coal seam group is realized.
Description
Technical field
The utility model relates to a kind of coal seam layer-through drilling device, relates in particular to a kind of projecting coal bed crowd's layer-through drilling device.
Background technology
For effectively solving gas and problem of gas outburst, need the construction layer-through drilling to carry out the zone before the projecting coal bed excavation operation and take out in advance.
When there is projecting coal bed crowd's needs construction multilayer coal seam layer-through drilling situation in mine, adopt round bur bar hydraulic slag discharging to creep into mode generally speaking.Adopt this kind round bur bar drill to advance, because projecting coal bed gas bearing capacity is big, desorption of mash gas speed is fast after passing the first floor coal seam; The coal seam is soft, when continuing upwards to penetrate all the other coal seam groups, coal body can occur and stride the obstruction boring way of escape; Cause methane accumulation, the situation that water is not returned in boring takes place; When gas pressure in the hole and hydraulic pressure were elevated to certain value simultaneously, way of escape obstruction was broken through, and spray orifice occurs; When processing is not returned water, often need not carry brill repeatedly, wear brill, easy like this bit bouncing, bury drills, the burning of bits, the breaking of rod accident of causing causes drilling efficiency low.Adopt this round bur bar drill to advance construction, cause gas management work difficulty, bring potential safety hazard, suppressed construction speed.
The utility model content
The technical problem that the utility model will solve provides a kind of projecting coal bed crowd's layer-through drilling device that the regimen condition spray orifice intensity takes place, alleviates, improves drilling efficiency of can stopping not return.
For solving the problems of the technologies described above, a kind of projecting coal bed crowd's layer-through drilling device of the utility model comprises round bur bar and steel band, it is characterized in that: be wound with steel band on the round bur bar; Round bur bar and steel band are integrally formed through welding manner; Steel band is wrapped on the round bur bar and is shape of threads.
Compared with prior art, the beneficial effect that the utlity model has is:
1, the utility model drives the coal petrography powder and directly discharges through being wrapped in external connection screw steel band rotation on the round bur bar, has guaranteed in the hole unimpededly, has stopped boring and under the situation of not returning water, has constructed.
2, because the utility model can guarantee in the hole unimpededly, prevent that the coal petrography powder from gathering to stop up boring, make free gas that the passage that discharges arranged, thereby it can alleviate projecting coal bed crowd's layer-through drilling spray orifice intensity of construction period.
3, do not need the workman to carry brill repeatedly, wear brill owing to the utility model, thereby it can realize that rig creeps into continuously and healthily, has improved drilling efficiency under projecting coal bed crowd's condition.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of a kind of projecting coal bed crowd's layer-through drilling device of the utility model.
The specific embodiment
As shown in Figure 1, a kind of projecting coal bed crowd's layer-through drilling device comprises round bur bar 1 and steel band 2, is wound with steel band 2 on the round bur bar 1; Round bur bar 1 and steel band 2 are integrally formed through welding manner; Steel band 2 is wrapped on the round bur bar 1 and is shape of threads.
Winding steel 2 on the basis of traditional round drilling rod 1, and the hydraulic slag discharging mode of creeping into is constructed, after drill bit gets into the coal seam; Drive the coal petrography powder through external steel band 2 rotations it is directly discharged, because the existence of frictional force is arranged, the coal petrography drilling cuttings can continue outside the hole, to discharge; Guaranteed in the hole unimpededly, prevented that the coal petrography powder from gathering to stop up boring that free gas has had the passage that discharges; Alleviated boring spray orifice intensity, stopped boring and under the situation of not returning water, constructed, drilling rod can continue to creep into.
Use a kind of projecting coal bed crowd's layer-through drilling device of the utility model; Can solve layer-through drilling constructional difficulties situation under projecting coal bed crowd's condition; Improve drilling efficiency, alleviate high strength spray orifice situation during the drilling construction, realize that the projecting coal bed crowd of high gas is safe and efficient to creep into fast.
Claims (1)
1. projecting coal bed crowd's layer-through drilling device comprises round bur bar (1) and steel band (2), it is characterized in that: be wound with steel band (2) on the round bur bar (1); Round bur bar (1) is integrally formed through welding manner with steel band (2); Steel band (2) is wrapped on the round bur bar (1) and is shape of threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203492103U CN202249825U (en) | 2011-09-16 | 2011-09-16 | Outburst coal seam group crossing drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203492103U CN202249825U (en) | 2011-09-16 | 2011-09-16 | Outburst coal seam group crossing drilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202249825U true CN202249825U (en) | 2012-05-30 |
Family
ID=46111084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203492103U Expired - Fee Related CN202249825U (en) | 2011-09-16 | 2011-09-16 | Outburst coal seam group crossing drilling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202249825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927149A (en) * | 2016-07-07 | 2016-09-07 | 华北科技学院 | Coal seam drilling device and method capable of quickly penetrating through coal gangue |
-
2011
- 2011-09-16 CN CN2011203492103U patent/CN202249825U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927149A (en) * | 2016-07-07 | 2016-09-07 | 华北科技学院 | Coal seam drilling device and method capable of quickly penetrating through coal gangue |
| CN105927149B (en) * | 2016-07-07 | 2018-07-06 | 华北科技学院 | The coal bed drilling burrowing device and method of a kind of quick penetration gangue |
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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: 20120530 Termination date: 20120916 |