CN202249825U - Outburst coal seam group crossing drilling device - Google Patents

Outburst coal seam group crossing drilling device Download PDF

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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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CN
China
Prior art keywords
drilling
coal seam
seam group
outburst coal
drilling device
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
Application number
CN2011203492103U
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Chinese (zh)
Inventor
刘延俊
董昌伟
孙玉峰
汪宏伟
程军
梁坤柱
刘朋超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI WOLONGHU COAL MINE Co Ltd
Original Assignee
ANHUI WOLONGHU COAL MINE Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANHUI WOLONGHU COAL MINE Co Ltd filed Critical ANHUI WOLONGHU COAL MINE Co Ltd
Priority to CN2011203492103U priority Critical patent/CN202249825U/en
Application granted granted Critical
Publication of CN202249825U publication Critical patent/CN202249825U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

A kind of projecting coal bed crowd's layer-through drilling device
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.
CN2011203492103U 2011-09-16 2011-09-16 Outburst coal seam group crossing drilling device Expired - Fee Related CN202249825U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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