CN106437531A - Disposable telescopic drilling tool used for fire preventing and extinguishing grouting in underground coal mine - Google Patents
Disposable telescopic drilling tool used for fire preventing and extinguishing grouting in underground coal mine Download PDFInfo
- Publication number
- CN106437531A CN106437531A CN201610742341.5A CN201610742341A CN106437531A CN 106437531 A CN106437531 A CN 106437531A CN 201610742341 A CN201610742341 A CN 201610742341A CN 106437531 A CN106437531 A CN 106437531A
- Authority
- CN
- China
- Prior art keywords
- grouting
- sleeve
- coal mine
- inner core
- drilling tool
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 26
- 239000003245 coal Substances 0.000 title claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 50
- 238000007569 slipcasting Methods 0.000 claims description 17
- 238000010276 construction Methods 0.000 abstract description 8
- 230000001066 destructive effect Effects 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000002269 spontaneous effect Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B11/00—Other drilling tools
- E21B11/06—Other drilling tools with driven cutting chains or similarly driven tools
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a disposable telescopic drilling tool used for fire preventing and extinguishing grouting in an underground coal mine. A front leading drill bit comprises three wing panels, joints of the three wing panels are in hollowed-out design, three top cutting disks located at the topmost end of the front leading drill bit rotate by 15 degrees towards the same direction along the side boundaries of the three wing panels correspondingly, and the projection portions of the three top cutting disks on a plane perpendicular to the axis of a rod body are overlapped; a flat key is arranged on the surface of the front portion of an inner core in the length direction, and a key groove matched with the flat key is formed in the inner wall of a sleeve in the length direction; and the rear end of the key groove makes contact with a clamping component, and a plurality of grouting holes are formed in the sleeve and the inner core. According to the disposable telescopic drilling tool used for the fire preventing and extinguishing grouting in the underground coal mine, under the precondition that hole-drilling construction is not influenced, a grouting way is extended from dot grouting to line grouting, and thick liquid is grouted from the multiple distributed grouting holes to a drilling rod, so that the grouting quantity is increased, the hole blocking probability is lowered, and grouting efficiency is improved; and full cutting is achieved, thus, the hole forming speed is greatly increased, and the three top cutting disks share the destructive power of a rock body to a single top cutting disk, so that the situation that hole drilling is successfully conducted is guaranteed.
Description
Technical field
The present invention relates to a kind of drilling tool, specifically a kind of disposably telescopic brill for underground coal mine fire extinguishing slip casting
Tool, belongs to mining equipment.
Background technology
Coal mine gob often occurs the situation of coal spontaneous combustion, badly influences downhole safety.In order to prevent coal certainly
Combustion, generally using to materials such as coal bed drilling grouting, note frothy gel, foams.At present when using drill-pouring above-mentioned material,
Firstly, there are the little problem of groundwater increment, and slurries can only the colored hole (floral tube) from drill end or drilling rod flow out it is easy to
It is blocked, have impact on slip casting efficiency；Secondly, it is being difficult the ignition region construction drill of pore-forming to broken coal body or soft seam etc.
When, because one-tenth porosity is low or is difficult pore-forming, have impact on grouting, reduce the efficiency of fire extinguishing；3rd, existing chisel edge one
As all there is cutting blind spot or blind area, achievement unit cutting can only be slit into hole, directly reduce cutting efficiency, and run into hard
Coal body when be easy to situation that cutting part tipping occurs, affect efficiency of construction.
Content of the invention
The problem existing for above-mentioned prior art is it is an object of the invention to provide one kind can improve one-tenth porosity, permissible
Improve slip casting efficiency, reduce slurries plug-hole probability, cutting blind spot can be eliminated simultaneously, increase cutting speed, ensure that drill bit is normal
Use, improve the disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting of coal spontaneous combustion regulation effect.
For achieving the above object, the technical solution used in the present invention is：A kind of for the one of underground coal mine fire extinguishing slip casting
Secondary property Telescopic drilling tool, including leading drill bit and the body of rod, described leading drill bit is located at rod end, and described leading drill bit includes
Three wing plates, the junction of described wing plate is designed for hollow out, and each wing plate is all arranged from top to bottom along side and is provided with top cutting
Piece, middle cutting sheet and undercutting pitch cutting；Three positioned at leading drill bit top are pushed up cutting sheets respectively along three pieces of wing plate sidelines to together
One direction rotates 15 degree, and the projection section in the plane vertical with body of rod axis is overlapping；The described body of rod includes sleeve and interior
Core, sleeve is set on inner core, and sleeve and the cooperation of inner core rear portion are provided with engaging part, and described inner core anterior face is along its length
It is provided with flat key, sleeve lining is provided with keyway with flat key cooperation along its length, and described keyway rear end is contacted with engaging part, described
Multiple injected holes are distributed with sleeve and inner core.
Preferably, described injected hole has four row, is circumferentially uniformly laid on sleeve and inner core.
Preferably, described engaging part is to cooperate the spline of setting.
Preferably, described top cutting sheet, middle cutting sheet and undercutting pitch cutting are respectively welded at wing plate side.
Preferably, a diameter of 13.4mm of described top cutting sheet.
Preferably, described sleeve outer diameter is 40-45mm.
With respect to prior art, it is an advantage of the invention that：
(1) on the premise of not affecting drilling construction, grouting mode is expanded to line note by a note, from the note of multiple distributions
Slurry hole is to slip casting in drilling rod, the wing plate of slurries hollow out on each injected hole sleeve and inner core and leading drill bit of injection
Junction is flowed out, and slurries are uniformly distributed in the borehole, and on the one hand the wing plate junction of equally distributed injected hole and hollow out increases
Grouting quantity, expands perfusion scope；On the other hand, in the higher fireproofing extinguishing materials of perfusion viscosity, the cloth of multiple injected holes
Put and greatly reduce plug-hole probability, slip casting efficiency can be improved,
(2) drill end after, device entirety indwelling in the borehole, even if being difficult pore-forming to broken coal body or soft seam etc.
Ignition region construction drill after, be also not in the phenomenon of collapse hole it is ensured that can smoothly slip casting, improve comprehensive fire extinguishing effect
Rate is it is ensured that the safety of coal spontaneous combustion is administered；
(3) because three top cutting sheets positioned at leading drill bit top are revolved along three pieces of wing plate sidelines to same direction respectively
Turn 15 degree, and the projection section in the plane vertical with body of rod axis be overlapping, eliminates the cutting blind spot of leading chisel edge,
Achieve full cutting, in the case that drilling diameter is constant, full cutting substantially increases speed of fulfiling hole, and three top cutting sheets away from
From closer to the destructive power having shared rock mass in drilling to single top cutting sheet is it is ensured that boring is smoothed out.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 be the present invention drill terminate recession inner core construction schematic diagram；
Fig. 3 is the schematic diagram of truncation part sleeve in Fig. 2；
Fig. 4 is the front view that the present invention removes leading drill bit；
Fig. 5 is the schematic perspective view of leading drill bit of the present invention；
Fig. 6 is the front view of leading drill bit；
Fig. 7 is the top view of leading drill bit；
In figure, 10. leading drill bit, 11. wing plates, 12. top cutting sheets, cutting sheet in 13., 14. undercutting pitch cuttings, 20. bodies of rod,
21. sleeves, 211. keyways, 22. inner cores, 221. flat keys, 30. injected holes, 40. splines.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail.
As illustrated, a kind of disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting, including leading drill bit 10
With the body of rod 20, described leading drill bit 10 is located at the body of rod 20 end, and described leading drill bit 10 includes three wing plates 11, described wing plate
11 junction is designed for hollow out, and each wing plate 11 is all arranged from top to bottom along side and is provided with top cutting sheet 12, middle cutting sheet
13 and undercutting pitch cutting 14；Positioned at three of leading drill bit 10 top top cutting sheets 12 respectively along three pieces of wing plate 11 sidelines to same
Direction rotates 15 degree, and the projection section in the plane vertical with the body of rod 20 axis is overlapping；The described body of rod 20 includes sleeve 21
With inner core 22, sleeve 21 is set on inner core 22, and sleeve 21 and the cooperation of inner core 22 rear portion are provided with engaging part, before described inner core 22
Portion surface is provided with flat key 221 along its length, and sleeve 21 inwall is provided with keyway 211 with flat key 221 cooperation along its length, described
Keyway 211 rear end is contacted with engaging part, and described sleeve 21 and inner core 22 are provided with multiple injected holes 30.
Preferably, in order to ensure uniformly to be in the milk, described injected hole 30 has four row, is circumferentially uniformly laid in sleeve 21 and interior
On core 22.
Preferably, in order that design is succinct, reduce manufacturing cost, described engaging part is to cooperate the spline of setting
40.
Preferably, described top cutting sheet 12, middle cutting sheet 13 and undercutting pitch cutting 14 are respectively welded at wing plate 11 side.
Preferably, a diameter of 13.4mm of described top cutting sheet 12.
Preferably, described sleeve 21 external diameter is 40-45mm.
During construction, this drill rod body 20 integral-rotation is driven by rig, the body of rod 20 drives leading drill bit 10 rotation construction
Boring, the spline 40 at sleeve 21 and inner core 22 rear portion is interconnected to constitute moment transferring structure, inner core 22 anterior face edge simultaneously
The flat key 221 of length direction setting is also used for transmitting moment, thus ensureing that sleeve 21 and inner core 22 can be rotated with secure synchronization；By
Rotate in the same direction 15 degree in three top cutting sheets 12 positioned at leading drill bit 10 top along three pieces of wing plate 11 sidelines respectively,
And the projection section in the plane vertical with the body of rod 20 axis is overlapping, eliminate the cutting blind spot of leading drill bit 10 front end, real
Showed full cutting, in the case that drilling diameter is constant, full cutting substantially increases speed of fulfiling hole, and three top cutting sheets 12 away from
From closer to the destructive power having shared rock mass in drilling to single top cutting sheet 12 is it is ensured that boring is smoothed out；Drill end
Afterwards, whole device indwelling in the borehole, according to the body of rod 20 axis direction drop back inner core 22, when the flat key 221 on inner core 22 is along set
Keyway 211 Receding Contact on cylinder 21 inwalls, to after the spline 40 at sleeve 21 rear portion, stops removing brill, then begins through injected hole
30 to slip casting in drilling rod；The slurries of injection hollow out on each injected hole 30 sleeve 21 and inner core 22 and leading drill bit 10
Wing plate 11 junction flow out, distribution in the borehole it is ensured that will not plug-hole, considerably increase grouting quantity, improve grouting efficiency.
Claims (6)
1. a kind of disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting, including leading drill bit and the body of rod, described before
Draw drill bit and be located at rod end it is characterised in that described leading drill bit includes three wing plates, the junction of described wing plate is to engrave
Sky designs, and each wing plate is all arranged from top to bottom along side and is provided with top cutting sheet, middle cutting sheet and undercutting pitch cutting；Positioned at leading
Three top cutting sheets of drill bit top rotate in the same direction 15 degree along three pieces of wing plate sidelines respectively, and are hanging down with body of rod axis
Projection section in straight plane is overlapping；The described body of rod includes sleeve and inner core, and sleeve is set on inner core, after sleeve and inner core
Portion's cooperation is provided with engaging part, and described inner core anterior face is provided with flat key along its length, sleeve lining along its length with flat
Key cooperation is provided with keyway, and described keyway rear end is contacted with engaging part, and described sleeve and inner core are distributed with multiple injected holes.
2. the disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting according to claim 1 it is characterised in that
Described injected hole has four row, is circumferentially uniformly laid on sleeve and inner core.
3. the disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting according to claim 1 it is characterised in that
Described engaging part is to cooperate the spline of setting.
4. the disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting according to claim 1 it is characterised in that
Described top cutting sheet, middle cutting sheet and undercutting pitch cutting are respectively welded at wing plate side.
5. the disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting according to claim 1 it is characterised in that
A diameter of 13.4mm of described top cutting sheet.
6. the disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting according to claim 1 it is characterised in that
Described sleeve outer diameter is 40-45mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610742341.5A CN106437531B (en) | 2016-08-26 | 2016-08-26 | A kind of disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610742341.5A CN106437531B (en) | 2016-08-26 | 2016-08-26 | A kind of disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106437531A true CN106437531A (en) | 2017-02-22 |
| CN106437531B CN106437531B (en) | 2018-10-30 |
Family
ID=58182646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610742341.5A Active CN106437531B (en) | 2016-08-26 | 2016-08-26 | A kind of disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437531B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201003379Y (en) * | 2006-09-06 | 2008-01-09 | 西安森兰科贸有限责任公司 | Glue injection fire extinguishing-proof drilling tool for coal mine |
| CN201265353Y (en) * | 2008-10-09 | 2009-07-01 | 陈淑英 | Full-hydraulic mining rescue drill rig |
| CN201363096Y (en) * | 2009-03-07 | 2009-12-16 | 中国矿业大学 | Drilling tool for coal pit fire extinguishing |
| CN202900165U (en) * | 2012-11-23 | 2013-04-24 | 王帅领 | Fire-proof and fire extinguishing drilling tool for short hole grouting of fully mechanized caving face |
| US20150096806A1 (en) * | 2013-08-15 | 2015-04-09 | Shell Oil Company | Mechanized slot drilling |
| CN204677114U (en) * | 2015-05-20 | 2015-09-30 | 河南永锦能源有限公司 | A kind of coal mine gas extraction drill hole Multifunctional drill |
| CN205349389U (en) * | 2015-11-24 | 2016-06-29 | 山东科技大学 | Reducing cavity slip casting stock that adds protective sleeve |
| CN205370450U (en) * | 2015-11-30 | 2016-07-06 | 徐州吉安矿业科技有限公司 | Colliery fire prevention drilling tool for slip casting |
| CN205977106U (en) * | 2016-08-26 | 2017-02-22 | 中国矿业大学 | A disposable telescopic drilling tool for colliery fire prevention slip casting in pit |
-
2016
- 2016-08-26 CN CN201610742341.5A patent/CN106437531B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201003379Y (en) * | 2006-09-06 | 2008-01-09 | 西安森兰科贸有限责任公司 | Glue injection fire extinguishing-proof drilling tool for coal mine |
| CN201265353Y (en) * | 2008-10-09 | 2009-07-01 | 陈淑英 | Full-hydraulic mining rescue drill rig |
| CN201363096Y (en) * | 2009-03-07 | 2009-12-16 | 中国矿业大学 | Drilling tool for coal pit fire extinguishing |
| CN202900165U (en) * | 2012-11-23 | 2013-04-24 | 王帅领 | Fire-proof and fire extinguishing drilling tool for short hole grouting of fully mechanized caving face |
| US20150096806A1 (en) * | 2013-08-15 | 2015-04-09 | Shell Oil Company | Mechanized slot drilling |
| CN204677114U (en) * | 2015-05-20 | 2015-09-30 | 河南永锦能源有限公司 | A kind of coal mine gas extraction drill hole Multifunctional drill |
| CN205349389U (en) * | 2015-11-24 | 2016-06-29 | 山东科技大学 | Reducing cavity slip casting stock that adds protective sleeve |
| CN205370450U (en) * | 2015-11-30 | 2016-07-06 | 徐州吉安矿业科技有限公司 | Colliery fire prevention drilling tool for slip casting |
| CN205977106U (en) * | 2016-08-26 | 2017-02-22 | 中国矿业大学 | A disposable telescopic drilling tool for colliery fire prevention slip casting in pit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106437531B (en) | 2018-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203097720U (en) | Concentric slide block simultaneous casing drilling tool, central drill bit and centralizer | |
| AU2017301079B2 (en) | Supporting Method of An Extensible Reaming Self-Anchoring Anchor Rod | |
| CN104314482B (en) | Closed type helical hole-protecting drill and using method thereof for drilling of soft coal bed | |
| US10794136B2 (en) | Reverse rotary sprinkler drilling pipe system with anti-sticking function and its application method | |
| CA2994061C (en) | Supporting method of an extensible reaming self-anchoring anchor rod | |
| CN206845098U (en) | A kind of down-hole hammer rig of pipe-following drilling | |
| CN105089499B (en) | Underground coal mine waterpower sprays tree-shaped drilling guide device and guidance method | |
| CN103321222B (en) | Recoverable type anchor rod, pressure-bearing plate type anchor pile and anchoring method | |
| CN203716841U (en) | Double-layer internal slag discharging and plugging prevention drilling tool for soft outburst coal seam drilling | |
| CN205977106U (en) | A disposable telescopic drilling tool for colliery fire prevention slip casting in pit | |
| CN201025046Y (en) | Driller for followed tube of wing expansion hole bushing | |
| CN204572026U (en) | A kind of Multifunctional anchor rod device | |
| CN106089173A (en) | A kind of completion mode with protection reservoir packing function | |
| CN203321328U (en) | Reamer bit for construction long screw pile machine | |
| CN106437531A (en) | Disposable telescopic drilling tool used for fire preventing and extinguishing grouting in underground coal mine | |
| CN104762958B (en) | Hexagon agitation driller | |
| CN213063513U (en) | Sleeve pipe coring drilling device | |
| CN205330556U (en) | Soft coal creeps into on layer open bionical falling of multiple wing indent and hinders guard aperture drilling rod | |
| CN112610255B (en) | Tunnel construction method for penetrating through weak and broken surrounding rock | |
| CN212743932U (en) | Drifting drilling tool combination that meets of inclined shaft section mud rock and hinder | |
| CN109209274B (en) | Double-layer casing directional perforation auxiliary windowing method | |
| CN108278079B (en) | Strengthen cherry coal rock intensity layered cutting drilling method and drilling tool | |
| CN112595192A (en) | Variable-diameter cut structure and method for roadway excavation | |
| CN205713988U (en) | A kind of efficient rotary digs rock drill bit | |
| CN105545218B (en) | The open bionical drop resistance guard aperture drilling rod of soft seam drilling multiple wing indent and drilling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |