CN204677114U - A kind of coal mine gas extraction drill hole Multifunctional drill - Google Patents

A kind of coal mine gas extraction drill hole Multifunctional drill Download PDF

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Publication number
CN204677114U
CN204677114U CN201520324953.3U CN201520324953U CN204677114U CN 204677114 U CN204677114 U CN 204677114U CN 201520324953 U CN201520324953 U CN 201520324953U CN 204677114 U CN204677114 U CN 204677114U
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CN
China
Prior art keywords
drill
weep hole
drill bit
bit
hole
Prior art date
Application number
CN201520324953.3U
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Chinese (zh)
Inventor
仝耀军
刘圣洁
白明锴
Original Assignee
河南永锦能源有限公司
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Publication date
Application filed by 河南永锦能源有限公司 filed Critical 河南永锦能源有限公司
Priority to CN201520324953.3U priority Critical patent/CN204677114U/en
Application granted granted Critical
Publication of CN204677114U publication Critical patent/CN204677114U/en

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Abstract

The utility model relates to a kind of coal mine gas extraction drill hole Multifunctional drill, comprise: bit body, bit body comprises front drill bit and rear drill bit, the port of front drill bit is provided with horizontal cutting knife, the inside of horizontal cutting knife offers port weep hole, the sidewall of front drill bit is provided with Buddha's warrior attendant composite sheet, the sidewall being provided with the front drill bit of Buddha's warrior attendant composite sheet offers front weep hole, at rear drill bit weep hole before the position of front drill bit offers, the middle part of rear drill bit offers middle weep hole, rear portion offers rear weep hole, bottom offers inlet opening, the position of inlet opening is provided with jointed rod screw thread, this Novel operating is simple, easy to maintenance, reduce difficulty of construction, ensure that tunneling construction safety, time saving and energy saving, the release being conducive to work front coal gas is effectively stopped because coal body exists the generation of the gas exceeding limit accident that local gas concentrates wall caving to cause, contribute to reducing coal dust and improve operating environment.

Description

A kind of coal mine gas extraction drill hole Multifunctional drill
Technical field
The utility model relates to control of coalmine gas technical field, is specifically related to a kind of coal mine gas extraction drill hole Multifunctional drill.
Background technology
Coal mine gas is also known as coal-bed gas (gas of coalseam), coal bed gas.The mist of the composition such as the methane of overflowing from coal and country rock, carbon dioxide and nitrogen.Gas is the adverse factor in coal production, and it is contaminated air not only, and when gas bearing capacity in air is 5% ~ 16%, meeting fire can set off an explosion, and causes the accident.Underground coal mine adopts layer-through drilling to take out in coal roadway stripe coal-bed gas work progress in advance, and due to gas bearing capacity and gas pressure impact, drilling construction progress is slow, and the phase of taking out does not reach regulation in advance to cause gas control, thus directly affects mine safety production.The simple hydraulic flushing in hole drill bit of general employing carries out coal mine gas extraction drill hole, need a dead lift rig, assembling rig, construction drill, replacing drill rod special drill bit like this, adopt high pressure water system to carry out hydraulic flushing in hole, front and back are dropped at least 3 hours, and difficulty of construction is large, and the cycle is long.
Therefore, produce a kind of simple to operate, easy to maintenance, reduce difficulty of construction, guarantee tunneling construction safety, time saving and energy saving, the release being conducive to work front coal gas is effectively stopped because coal body exists the generation of the gas exceeding limit accident that local gas concentrates wall caving to cause, contribute to reducing the coal mine gas extraction drill hole Multifunctional drill that coal dust improves operating environment, there are market prospects widely.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of simple to operate, easy to maintenance, reduce difficulty of construction, guarantee tunneling construction safety, time saving and energy saving, the release being conducive to work front coal gas effectively stops, because coal body exists the generation of the gas exceeding limit accident that local gas concentrates wall caving to cause, to contribute to reducing the coal mine gas extraction drill hole Multifunctional drill that coal dust improves operating environment.
The technical solution of the utility model is achieved in that a kind of coal mine gas extraction drill hole Multifunctional drill, comprise: bit body, it is characterized in that: described bit body comprises front drill bit and rear drill bit, the port of front drill bit is provided with horizontal cutting knife, the inside of horizontal cutting knife offers port weep hole, the sidewall of front drill bit is provided with Buddha's warrior attendant composite sheet, the sidewall being provided with the front drill bit of Buddha's warrior attendant composite sheet offers front weep hole, at rear drill bit weep hole before the position of front drill bit offers, the middle part of rear drill bit offers middle weep hole, rear portion offers rear weep hole, bottom offers inlet opening, the position of inlet opening is provided with jointed rod screw thread.
Described front weep hole is and is symmetrical arranged on front drill bit and rear drill bit, and middle weep hole and rear weep hole are and are symmetrical arranged on rear drill bit.
The quantity of described front weep hole is 4, and the quantity of middle weep hole is 2, and the quantity of rear weep hole is 2.
Described front weep hole is turn forward and be 30 ° with the angle of bit body center line, and the angle of middle weep hole and bit body center line is 90 °, and rear weep hole is that to tilt backwards with the angle of bit body center line be 30 °.
Described port weep hole, front weep hole, middle weep hole, rear weep hole and inlet opening adopt Buddha's warrior attendant composite sheet to carry out the process of thickening 20 ~ 30mm to perforate position before perforate.
Described bit body adopts the seamless steel pipe of 50mm to make.
The utility model has following good effect: a kind of coal mine gas extraction drill hole Multifunctional drill of the utility model, bit body comprises front drill bit and rear drill bit, the port of front drill bit is provided with horizontal cutting knife, rubbing surface can be reduced, the inside of horizontal cutting knife offers port weep hole, the sidewall of front drill bit is provided with Buddha's warrior attendant composite sheet, 4 front weep holes are provided with in the both sides at the rear of port weep hole, weep hole after 2 middle weep holes and 2, and the position of perforate carries out thickening to 20 ~ 30mm in advance on bit body, then perforate is carried out at thickening position, ensure the hole depth of drill bit position jet orifice, thus ensure that static pressure water can form jet after flowing out, therefore under hydraulic pressure (3MPa), current can reach 300 ~ 500mm by the jet length formed after this bit body, effect is fairly obvious, the drill bit of static pressure water reaming only needs to rely on artificial hand-held flow jet flow drill can carry out reaming by work plane local gas extraction boring, every hole pore-enlargement about 1 hours, relative hydraulic flushing in hole, technique is simple, the aperture after this novel reaming is adopted to reach 800-900mm, achieve fabulous reaming effect, release the stress in coal body on the one hand, effectively pressure release is carried out to front coal body, front stress in coal bed is effectively discharged, ensure that tunneling construction safety, the area of the rib gas release in reaming metapore increases, be conducive to the release of work plane front coal gas, can effectively stop because coal body exists the generation of the gas exceeding limit accident that local gas concentrates wall caving to cause, in addition after reaming, front coal body is moistening by static pressure water, contribute to reducing coal dust, serve and control gas, depositing dust double effects, good coal-bed flooding dust-laying effect, improve operating environment.
Accompanying drawing explanation
Fig. 1 is main structure schematic diagram of the present utility model.
In figure: 1, front drill bit 2, rear drill bit 3, horizontal cutting knife 4, Buddha's warrior attendant composite sheet 5, port weep hole, 6, front weep hole 7, middle weep hole 8, rear weep hole 9, inlet opening 10, jointed rod screw thread.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model will be further described.
As shown in Figure 1, a kind of coal mine gas extraction drill hole Multifunctional drill, comprise: bit body, described bit body comprises front drill bit 1 and rear drill bit 2, the port of front drill bit 1 is provided with horizontal cutting knife 3, the inside of horizontal cutting knife 3 offers port weep hole 5, the sidewall of front drill bit 1 is provided with Buddha's warrior attendant composite sheet 4, the sidewall being provided with the front drill bit of Buddha's warrior attendant composite sheet 4 offers front weep hole 6, at rear drill bit 2 weep hole 6 before the position of front drill bit 1 offers, the middle part of rear drill bit 2 offers middle weep hole 7, rear portion offers rear weep hole 8, bottom offers inlet opening 9, the position of inlet opening 9 is provided with jointed rod screw thread 10.Described front weep hole 6 is and is symmetrical arranged on front drill bit 1 and rear drill bit 2, and middle weep hole 7 and rear weep hole 8 are and are symmetrical arranged on rear drill bit 2.The quantity of described front weep hole 6 is 4, and the quantity of middle weep hole 7 is 2, and the quantity of rear weep hole 8 is 2.Described front weep hole 6 is for turning forward and be 30 ° with the angle of bit body center line, and middle weep hole 7 is 90 ° with the angle of bit body center line, and rear weep hole 8 is 30 ° for tilting backwards with the angle of bit body center line.Described port weep hole 5, front weep hole 6, middle weep hole 7, rear weep hole 8 and inlet opening 9 adopt Buddha's warrior attendant composite sheet to carry out the process of thickening 20 ~ 30mm to perforate position before perforate.Described bit body adopts the seamless steel pipe of 50mm to make.
The utility model in use, in the process of drilling, this bit body is from construction to punching, one-step pore-creating, midway does not need dead man to change bit body, drill bit punching and be directed to one, 4 anterior front weep holes 6 effectively can go out the coal petrography particle after fragmentation, prevent coal petrography Particle Blocking weep hole from causing drill-pipe-sticking-head body, middle weep hole 7 to the fragmentation of middle appearance of drilling with certain prevention effect, the impact of rear weep hole 8, can avoid producing pressure to bore, during seeing coal, the space of punching can be expanded, be conducive to discharging gas, rear portion weep hole is under the effect of water jet, hole drilling deslagging when being more conducive to creep into, this Novel operating is simple, easy to maintenance, reduce difficulty of construction, ensure that tunneling construction safety, time saving and energy saving, the release being conducive to work front coal gas is effectively stopped because coal body exists the generation of the gas exceeding limit accident that local gas concentrates wall caving to cause, contribute to reducing coal dust and improve operating environment.

Claims (6)

1. a coal mine gas extraction drill hole Multifunctional drill, comprise: bit body, it is characterized in that: described bit body comprises front drill bit and rear drill bit, the port of front drill bit is provided with horizontal cutting knife, the inside of horizontal cutting knife offers port weep hole, the sidewall of front drill bit is provided with Buddha's warrior attendant composite sheet, the sidewall being provided with the front drill bit of Buddha's warrior attendant composite sheet offers front weep hole, at rear drill bit weep hole before the position of front drill bit offers, the middle part of rear drill bit offers middle weep hole, rear portion offers rear weep hole, bottom offers inlet opening, the position of inlet opening is provided with jointed rod screw thread.
2. coal mine gas extraction drill hole Multifunctional drill according to claim 1, is characterized in that: described front weep hole is and is symmetrical arranged on front drill bit and rear drill bit, and middle weep hole and rear weep hole are and are symmetrical arranged on rear drill bit.
3. coal mine gas extraction drill hole Multifunctional drill according to claim 1, is characterized in that: the quantity of described front weep hole is 4, and the quantity of middle weep hole is 2, and the quantity of rear weep hole is 2.
4. coal mine gas extraction drill hole Multifunctional drill according to claim 1, it is characterized in that: described front weep hole is turn forward and be 30 ° with the angle of bit body center line, the angle of middle weep hole and bit body center line is 90 °, and rear weep hole is that to tilt backwards with the angle of bit body center line be 30 °.
5. coal mine gas extraction drill hole Multifunctional drill according to claim 1, is characterized in that: described port weep hole, front weep hole, middle weep hole, rear weep hole and inlet opening adopt Buddha's warrior attendant composite sheet to carry out the process of thickening 20 ~ 30mm to perforate position before perforate.
6. coal mine gas extraction drill hole Multifunctional drill according to claim 1, is characterized in that: described bit body adopts the seamless steel pipe of 50mm to make.
CN201520324953.3U 2015-05-20 2015-05-20 A kind of coal mine gas extraction drill hole Multifunctional drill CN204677114U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520324953.3U CN204677114U (en) 2015-05-20 2015-05-20 A kind of coal mine gas extraction drill hole Multifunctional drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520324953.3U CN204677114U (en) 2015-05-20 2015-05-20 A kind of coal mine gas extraction drill hole Multifunctional drill

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CN204677114U true CN204677114U (en) 2015-09-30

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105909172A (en) * 2016-04-22 2016-08-31 深圳市工勘岩土集团有限公司 Rock horizontal inclined hole dust-free drilling and static explosion construction method
CN106437531A (en) * 2016-08-26 2017-02-22 中国矿业大学 Disposable telescopic drilling tool used for fire preventing and extinguishing grouting in underground coal mine
CN107676124A (en) * 2017-09-25 2018-02-09 中煤科工集团重庆研究院有限公司 A kind of pneumatic gas pumping failure drilling prosthetic device
CN107838277A (en) * 2017-11-21 2018-03-27 嘉善信息技术工程学校 A kind of casting punch machines
CN107999603A (en) * 2017-11-21 2018-05-08 嘉善信息技术工程学校 A kind of casting punching unit
CN109184653A (en) * 2018-10-10 2019-01-11 山东科技大学 A kind of New Coal Mine hydraulic fracturing slotting device and method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105909172A (en) * 2016-04-22 2016-08-31 深圳市工勘岩土集团有限公司 Rock horizontal inclined hole dust-free drilling and static explosion construction method
CN106437531A (en) * 2016-08-26 2017-02-22 中国矿业大学 Disposable telescopic drilling tool used for fire preventing and extinguishing grouting in underground coal mine
CN106437531B (en) * 2016-08-26 2018-10-30 中国矿业大学 A kind of disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting
CN107676124A (en) * 2017-09-25 2018-02-09 中煤科工集团重庆研究院有限公司 A kind of pneumatic gas pumping failure drilling prosthetic device
CN107676124B (en) * 2017-09-25 2019-07-30 中煤科工集团重庆研究院有限公司 A kind of pneumatic gas drainage failure drilling prosthetic device
CN107838277A (en) * 2017-11-21 2018-03-27 嘉善信息技术工程学校 A kind of casting punch machines
CN107999603A (en) * 2017-11-21 2018-05-08 嘉善信息技术工程学校 A kind of casting punching unit
CN109184653A (en) * 2018-10-10 2019-01-11 山东科技大学 A kind of New Coal Mine hydraulic fracturing slotting device and method
CN109184653B (en) * 2018-10-10 2020-08-04 山东科技大学 Novel slotting device and method for coal mine hydraulic fracturing

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20150930

Termination date: 20160520