CN103334699A - Coal mine underground coal bed drilling and cave-building device and method of use - Google Patents

Coal mine underground coal bed drilling and cave-building device and method of use Download PDF

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Publication number
CN103334699A
CN103334699A CN2013102521456A CN201310252145A CN103334699A CN 103334699 A CN103334699 A CN 103334699A CN 2013102521456 A CN2013102521456 A CN 2013102521456A CN 201310252145 A CN201310252145 A CN 201310252145A CN 103334699 A CN103334699 A CN 103334699A
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China
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cave
cutting arm
transmission shaft
mine underground
power transmission
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CN2013102521456A
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CN103334699B (en
Inventor
赵继展
张俭
黑磊
张培河
孙四清
龙威成
牟全斌
陈冬冬
张阳
景兴鹏
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Xian Research Institute Co Ltd of CCTEG
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Xian Research Institute Co Ltd of CCTEG
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Abstract

The invention relates to a coal mine underground coal bed drilling and cave-building device and a method of use. The effect of extracting gas can be improved by increasing the diameter of a drill hole, and the diameter of the drill hole can be infinitely increased theoretically through a repeatedly reaming technique; but in practice, under the limitation of the power of a drilling machine and the strength of a drilling tool, multiple specifications of drill bits are needed, and during a repeatedly drilling operation, the drill bit needs to be changed to ream, so that the working procedure is complex, and the hold-up time is long. The coal mine underground coal bed drilling and cave-building device is characterized by comprising a tool joint, a transmission shaft, a pressure-loaded bearing and a shell, wherein an L-shaped cutting arm is arranged in the shell, and the bent part of the cutting arm is fixedly arranged on the shell through a pin shaft; one end of the transmission shaft is connected with the tool joint, the other end of the transmission shaft is movably connected with one end of the cutting arm through a state control connection rod, and the other end of the cutting arm is arranged in a strip-shaped opening of the shell; and a reset spring is arranged on the transmission shaft. The coal mine underground coal bed drilling and cave-building device disclosed by the invention has the advantages that the structure and the method of use are simple, and the diameter of the drill hole can be increased at a shorter time.

Description

Cave device and using method are made in a kind of coal mine underground coal bed boring
Technical field
The invention belongs to the coal bed drilling technical field, relate to a kind of coal mine underground coal bed boring and make cave device and using method.
Background technology
Because the coal seam permeability is generally lower, it is very difficult to cause China's coal-mine enterprise to adopt common gas pumping method will reach desirable effect in the limited extraction time, and there is exigence in enterprise to the raising of extraction efficient.
Increase bore diameter and can improve the mash gas extraction effect significantly, down-hole major diameter mash gas pumping drilling technology is promoted at present.But the one-step pore-creating large diameter borehole needs high-power rig and high strength drilling tool, and induces gas outstanding in projecting coal bed easily, so the bore diameter of one-step pore-creating is restricted.Repeatedly counter-boring techniques can infinitely increase bore diameter in theory, but be subjected to the restriction of rig power and drilling tool intensity in the practice, bore diameter generally is confined in the φ 300mm, need to adopt the drill bit of a plurality of specifications simultaneously, more bit change reaming repeatedly pulls out of hole, complex procedures, holding time is long, and practical operation is restricted.
Summary of the invention
Technical problem to be solved by this invention provides and a kind ofly can enlarge bore diameter and cave device and using method are made in the simple coal mine underground coal bed boring of using method.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: the cave device is made in a kind of coal mine underground coal bed boring, and its special feature is: described coal mine underground coal bed boring is made the cave device and is comprised tool joint, power transmission shaft, pressure-loaded bearing and housing; The cutting arm of " L " type is set in the described housing, and the bending part of cutting arm is fixed on the housing by bearing pin; In the described housing power transmission shaft is set, an end of power transmission shaft is connected with tool joint, and its other end flexibly connects by an end of state control link and cutting arm, and the other end of cutting arm is arranged in the strip gab of housing; At power transmission shaft back-moving spring is set, the front end of housing arranges pressure-loaded bearing, pressure-loaded bearing by the bearing adapter, locate drilling rod and set upright base and be connected.
Interconnected passage is set in described tool joint, power transmission shaft, bearing pin and the cutting arm, constitutes waterflood path, the delivery port of described waterflood path is positioned on the cutting arm.
One end of described state control link is connected with power transmission shaft by clamp nut, and its other end is connected with cutting arm by small clevis pin with head.
The described base of setting upright is connected with the location drilling rod by screw thread, and described location drilling rod is connected with the bearing adapter by screw thread, and described bearing adapter is connected with pressure-loaded bearing by screw thread.
The using method of cave device is made in above-mentioned a kind of coal mine underground coal bed boring, and its special feature is: may further comprise the steps:
One: determine the position, hole, fixedly rig and slush pump are built the circulatory mediator storage pool; Prepare circulatory mediator, drilling rod and make the cave device; Connect rig, slush pump power supply and pipeline;
Two, connect power supply, start rig and slush pump, conventional bit to be installed normally to be crept into, control speed of gyration and rate of penetration make drill hole wall level and smooth, carry brill after reaching extraction borehole design hole depth;
Three: make the degree of depth that put at the acupuncture point according to setting boring, determine tipping location drilling rod, the cave device is made in tipping, will make the cave device with drilling rod and send into boring;
Four: after making the cave device and in the hole, obtaining support force, slush pump is opened, and makes the cave device and feeds rotation, the back-moving spring compression, cutting arm opens and rotates cutting boring rib, begin to make the worker that spreads manuer in holes, speed of gyration is controlled at 80~120r/min, and rate of penetration is controlled at 0.001~0.005m/min, open fully until cutting arm, when making the cave, tool joint to filling pipe, realizes water supply water conservancy diversion in the drilling rod to supply water to the cooling of cutting arm and washing away of cinder;
Five: make after the cave finishes, return and remove drilling tool, drive power transmission shaft and pull out, back-moving spring is replied bullet and is stretched, and cutting arm resets, and withdraws from and makes the cave device.
Compared with prior art, beneficial effect of the present invention is:
1. coal mine underground coal bed boring of the present invention is made the cave device and is provided with cutting arm, driving cutting arm when power transmission shaft applies axial torque to housing is that axle is done the cutting that rotates in a circumferential direction with the drive shaft axis, can realize that diameter is greater than the cave of making of φ 300mm at the set depth of coal-bed gas extraction borehole, more bit change reaming, reach the anti-reflection effect of coal seam release, improve boring gas pumping efficient;
2. be provided with interconnected waterflood path in tool joint of the present invention, power transmission shaft, bearing pin and the cutting arm, in when work, by tool joint with water supply water conservancy diversion in the drilling rod to waterflood path, from the delivery port ejection of cutting arm, realization washing away cinder;
3. be provided with pressure-loaded bearing among the present invention, this pressure-loaded bearing is arranged on the housing, be connected with the location drilling rod by the bearing adapter, bear axial compression, realizing the location drilling rod simultaneously and set upright base can be along with housing rotates, weakened the location drilling rod, the resistance when setting upright base and housing and together rotating, prevent the wearing and tearing when setting upright base rotates with housing.
4. to make the using method of cave device simple for the coal mine underground coal bed boring of the present invention, improves the mash gas extraction effect thereby can increase bore diameter within a short period of time.
Description of drawings
Describe the present invention in detail below in conjunction with drawings and embodiments:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the course of work schematic diagram among the present invention;
Fig. 3 is filling pipe schematic diagram among the present invention.
Among the figure: 1. set upright base, 2. location drilling rod, 3. bearing adapter, 4. cutting arm, 5. bearing pin, 6. small clevis pin with head, 7. state control link, 8. clamp nut, 9. housing, 10. power transmission shaft, 11. tool joint, 12. pressure-loaded bearings, 13. back-moving springs, 14. filling pipes, 15. strip gabs.
The specific embodiment
As shown in Figure 1, the cave device is made in a kind of coal mine underground coal bed boring, comprise tool joint 11, power transmission shaft 10, pressure-loaded bearing 12 and housing 9, the cutting arm 4 of " L " type is set in the housing 9, the bending part of cutting arm 4 is fixed on the housing 9 by bearing pin, power transmission shaft 10 is set in the housing 9, back-moving spring 13 is set on the power transmission shaft 10, one end of power transmission shaft 10 stretches out housing 9 and is connected with tool joint 11, and its other end flexibly connects by the end of state control link 7 with cutting arm 4, and the other end of cutting arm 4 is arranged in the strip gab 15 of housing 9, like this, power transmission shaft 10 drives cutting arm 4 expansions by state control link 7 or shrinks under end thrust or pulling force effect.
The front end of housing 9 arranges pressure-loaded bearing 12, sets upright base 1 and is connected with location drilling rod 2 by screw thread, and location drilling rod 2 is connected with bearing adapter 3 by screw thread, and bearing adapter 3 is connected with pressure-loaded bearing 12 by screw thread.
One end of state control link 7 is fixedlyed connected with power transmission shaft 10 by clamp nut 8, and its other end flexibly connects by small clevis pin with head 6 and cutting arm 4.
Referring to Fig. 3, in order to realize the cooling of cutting arm 4 and washing away of cinder, in tool joint 11, power transmission shaft 10, bearing pin and the cutting arm 4 interconnected passage is set, constitute waterflood path 14, the delivery port of waterflood path 14 is positioned on the cutting arm 4, by tool joint 11 with the rotation of drilling rod with feed transmission of power and give power transmission shaft 10, tool joint 11 simultaneously with the water supply water conservancy diversion to waterflood path 14, water supply sprays from the delivery port of cutting arm 4, thereby has realized the cooling of cutting arm 4 and washing away of cinder.
Referring to Fig. 3, cave device operating principle is made in coal mine underground coal bed boring of the present invention: tool joint 11 is connected on the drilling rod, send into and wait to make in the hole in cave, to set upright base 1 holds out against with hole wall, start working, drilling rod by tool joint 11 with rotary power with feed transmission of power and give power transmission shaft 10, back-moving spring 13 on the power transmission shaft 10 is feeding the effect lower compression of power, the state control link 7 that is connected with power transmission shaft 10 is subjected to axial force and advances vertically, the cutting arm 4 that flexibly connects with state control link 7 also advances thereupon vertically, and power transmission shaft 10 drives housing 9 rotations simultaneously under the effect of rotary power.The bending part of cutting arm 4 is fixed on the housing 9 by big bearing pin 5.Cutting arm 4 other ends stretch out that strip gab 15 is expanded gradually and along with housing 9 rotation cutting boring ribs are made the cave; When making the cave, to filling pipe 14, it is right realize to supply water with water supply water conservancy diversion in the drilling rod in tool joint 11, the washing away of the cooling of cutting arm 4 and cinder.In entire work process, the pressure-loaded bearing 12 of housing 9 front ends bears axial compression, realize housing 9 rotation and location drilling rod 2 simultaneously and set upright base 1 and do not rotate, avoid locating drilling rod 2, set upright when base 1 together rotates with housing 9 and increase resistance, wearing and tearing when avoiding setting upright base 1 and together rotating.
The using method of cave device is made in a kind of coal mine underground coal bed boring, and its concrete operating procedure is:
The first step: determine the position, hole, fixedly rig and slush pump are built the circulatory mediator storage pool; Prepare circulatory mediator, drilling rod and make the cave device; Connect rig, slush pump power supply and pipeline;
Second step: connect power supply, start rig and slush pump, conventional bit is installed is normally crept into, control speed of gyration and rate of penetration make drill hole wall level and smooth, carry brill after reaching extraction borehole design hole depth;
The 3rd step: make the degree of depth that put at the acupuncture point according to setting boring, determine to make the location drilling rod that the cave device need be hinged with, will make the cave device with drilling rod then and send into boring;
The 4th step: after making the cave device and in the hole, obtaining support force, slush pump is opened, make the cave device and feed rotation, the back-moving spring compression, cutting arm opens and rotates cutting boring rib, begin to make the worker that spreads manuer in holes, speed of gyration control is at 80~120r/min, be 90r/min as speed of gyration, 100 r/min or 110 r/min, rate of penetration is controlled at 0.001~0.005m/min, controls at 0.002 m/min as rate of penetration, 0.003 m/min or 0.004 m/min, open fully until cutting arm, when making the cave, tool joint to filling pipe, realizes water supply water conservancy diversion in the drilling rod to supply water to the cooling of cutting arm and washing away of cinder;
The 5th step: make after the cave finishes, return and remove drilling tool, drive power transmission shaft and pull out, back-moving spring is replied bullet and is stretched, and cutting arm resets, and withdraws from and makes the cave device.

Claims (5)

1. the cave device is made in a coal mine underground coal bed boring, it is characterized in that: described coal mine underground coal bed boring is made the cave device and is comprised tool joint (11), power transmission shaft (10), pressure-loaded bearing (12) and housing (9); The cutting arm (4) of " L " type is set in the described housing (9), and the bending part of cutting arm (4) is fixed on the housing by bearing pin (5); Power transmission shaft (10) is set in the described housing (9), one end of power transmission shaft (10) is connected with tool joint (11), its other end flexibly connects by the end of state control link (7) with cutting arm (4), and the other end of cutting arm (4) is arranged in the strip gab (15) of housing (9); At power transmission shaft (10) back-moving spring (13) is set, the front end of housing (9) arranges pressure-loaded bearing (12), and pressure-loaded bearing (12) is by bearing adapter (3), location drilling rod (2) and set upright base (1) and be connected.
2. the cave device is made in a kind of coal mine underground coal bed boring according to claim 1, it is characterized in that: in described tool joint (11), power transmission shaft (10), bearing pin (5) and the cutting arm (4) interconnected passage is set, constitute waterflood path (14), the delivery port of described waterflood path (14) is positioned on the cutting arm (4).
3. the cave device is made in a kind of coal mine underground coal bed boring according to claim 1 and 2, it is characterized in that: an end of described state control link (7) is connected with power transmission shaft (10) by clamp nut (8), and its other end is connected with cutting arm (4) by small clevis pin with head (6).
4. the cave device is made in a kind of coal mine underground coal bed boring according to claim 3, it is characterized in that: the described base (1) of setting upright is connected with location drilling rod (2) by screw thread, described location drilling rod (2) is connected with bearing adapter (3) by screw thread, and described bearing adapter (3) is connected with pressure-loaded bearing (12) by screw thread.
5. the using method of cave device is made in a kind of coal mine underground coal bed boring according to claim 4, it is characterized in that: may further comprise the steps:
One: determine the position, hole, fixedly rig and slush pump are built the circulatory mediator storage pool; Prepare circulatory mediator, drilling rod and make the cave device; Connect rig, slush pump power supply and pipeline;
Two, connect power supply, start rig and slush pump, conventional bit to be installed normally to be crept into, control speed of gyration and rate of penetration make drill hole wall level and smooth, carry brill after reaching extraction borehole design hole depth;
Three: make the degree of depth that put at the acupuncture point according to setting boring, determine to make the location drilling rod that the cave device need be hinged with, will make the cave device with drilling rod and send into boring;
Four: after making the cave device and in the hole, obtaining support force, slush pump is opened, and makes the cave device and feeds rotation, the back-moving spring compression, cutting arm opens and rotates cutting boring rib, begin to make the worker that spreads manuer in holes, speed of gyration is controlled at 80~120r/min, and rate of penetration is controlled at 0.001~0.005m/min, open fully until cutting arm, when making the cave, tool joint to filling pipe, realizes water supply water conservancy diversion in the drilling rod to supply water to the cooling of cutting arm and washing away of cinder;
Five: make after the cave finishes, return and remove drilling tool, drive power transmission shaft and pull out, back-moving spring is replied bullet and is stretched, and cutting arm resets, and withdraws from and makes the cave device.
CN201310252145.6A 2013-06-24 2013-06-24 Coal mine underground coal bed drilling and cave-building device and method of use Active CN103334699B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104847260A (en) * 2015-05-21 2015-08-19 中煤科工集团重庆研究院有限公司 Underground coal mine reverse broaching and permeability increasing device and use method thereof
CN105370209A (en) * 2015-11-26 2016-03-02 中煤科工集团西安研究院有限公司 Drill pipe lifting and reaming drill and construction method thereof
CN107998537A (en) * 2017-12-06 2018-05-08 赵雪莲 A kind of mining gangue firebreak device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2616655Y (en) * 2003-05-08 2004-05-19 辛新平 Automatic reducing and broaching drilling tool
US6886633B2 (en) * 2002-10-04 2005-05-03 Security Dbs Nv/Sa Bore hole underreamer
CN101315021A (en) * 2007-05-29 2008-12-03 煤炭科学研究总院 Automatic reducing borehole-enlarging drilling tool
CN102155164A (en) * 2011-02-24 2011-08-17 平顶山五环实业有限公司 Thrust auxiliary reamer bit
CN201963202U (en) * 2011-02-24 2011-09-07 平顶山五环实业有限公司 Strong push subsidiary type reamer bit
CN202338203U (en) * 2011-11-02 2012-07-18 中国石油集团渤海钻探工程有限公司 Open-hole cave-making tool
CN203321324U (en) * 2013-06-24 2013-12-04 中煤科工集团西安研究院 Underground coal mine seam drilling and cavitating device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6886633B2 (en) * 2002-10-04 2005-05-03 Security Dbs Nv/Sa Bore hole underreamer
CN2616655Y (en) * 2003-05-08 2004-05-19 辛新平 Automatic reducing and broaching drilling tool
CN101315021A (en) * 2007-05-29 2008-12-03 煤炭科学研究总院 Automatic reducing borehole-enlarging drilling tool
CN102155164A (en) * 2011-02-24 2011-08-17 平顶山五环实业有限公司 Thrust auxiliary reamer bit
CN201963202U (en) * 2011-02-24 2011-09-07 平顶山五环实业有限公司 Strong push subsidiary type reamer bit
CN202338203U (en) * 2011-11-02 2012-07-18 中国石油集团渤海钻探工程有限公司 Open-hole cave-making tool
CN203321324U (en) * 2013-06-24 2013-12-04 中煤科工集团西安研究院 Underground coal mine seam drilling and cavitating device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104847260A (en) * 2015-05-21 2015-08-19 中煤科工集团重庆研究院有限公司 Underground coal mine reverse broaching and permeability increasing device and use method thereof
CN105370209A (en) * 2015-11-26 2016-03-02 中煤科工集团西安研究院有限公司 Drill pipe lifting and reaming drill and construction method thereof
CN105370209B (en) * 2015-11-26 2018-10-12 中煤科工集团西安研究院有限公司 It carries and bores reaming drilling tool and its construction method
CN107998537A (en) * 2017-12-06 2018-05-08 赵雪莲 A kind of mining gangue firebreak device
CN107998537B (en) * 2017-12-06 2020-12-18 徐州新南湖科技有限公司 Mining gangue fire protection device

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