AU2014295717B2 - Anchoring and anti-blocking drill rod for coal mine floor - Google Patents
Anchoring and anti-blocking drill rod for coal mine floor Download PDFInfo
- Publication number
- AU2014295717B2 AU2014295717B2 AU2014295717A AU2014295717A AU2014295717B2 AU 2014295717 B2 AU2014295717 B2 AU 2014295717B2 AU 2014295717 A AU2014295717 A AU 2014295717A AU 2014295717 A AU2014295717 A AU 2014295717A AU 2014295717 B2 AU2014295717 B2 AU 2014295717B2
- Authority
- AU
- Australia
- Prior art keywords
- drill rod
- hollow
- coal mine
- disposed
- threaded connector
- 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.)
- Ceased
Links
- 239000003245 coal Substances 0.000 title claims abstract description 27
- 238000004873 anchoring Methods 0.000 title claims abstract description 18
- 238000005553 drilling Methods 0.000 abstract description 16
- 238000004140 cleaning Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000010865 sewage Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 230000002411 adverse Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0053—Anchoring-bolts in the form of lost drilling rods
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/18—Pipes provided with plural fluid passages
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
- Piles And Underground Anchors (AREA)
Abstract
An anchoring and anti-blocking drill rod for a coal mine floor comprises a hollow drill rod (1), a hollow sleeve (2), threaded connectors disposed at ends of the hollow drill rod, a prismatic wrench clamping groove (3) disposed in the outer surface of the hollow drill rod and located between a front end threaded connector (5) and a tail end threaded connector (6), a spiral connecting line (4) disposed between the hollow sleeve and the hollow drill rod, and a water-proof insertion groove (7) disposed in a tail end of the hollow sleeve. The device can drill the coal mine floor, and can simultaneously perform drilling, cleaning and dirt discharging. The device has a simple structure and good adaptation, is easy to operate, provides a good anti-blocking effect, and has wide practicability.
Description
PCT/CN2014/072184 wo 2015/010463
Anchoring and Anti-Blocking Drill Rod for Coal Mine Floor
Field of the Invention
The present invention relates to the technical field of floor anchoring equipment, in particular to a floor anchoring drill rod for coal mine, which can accomplish quick and clean construction while preventing blockage.
Background Art
As the economic construction in China is developed rapidly, the energy need becomes higher and higher; so, it is difficult to change the situation that the coal resource is a major source of energy in China in a long time in the future; hence, the coal industry is developed continuously towards the trend of mechanization and automation. In most coal mines in China, the roadway floor heave is severely damaged in most coal mines owing to coal rock properties, buried depth, and ground stress, etc.; consequently, the safe use of the roadways is affected adversely and the safe production in the coal mines is hampered. Therefore, the floor strengthening task is very hard.
At present, anchor bolt support is the most effective means for floor strengthening and control in coal mines in China. There is few research on anchoring equipment specially developed for roadway floor in coal mines in China at present. The wet drilling method used by typical anchoring equipment is to directly inject high pressure water supplied from a fixed water source into a rotating hollow drill rod, so as to extrude out the silt-water mixture from the clearance between the drill rod and the coal seam (rock strata). Such a wet drilling method has some technical problems in the floor drilling work in coal mines: firstly, the extruded silt-water mixture extruded out from the clearance splashes about as the drill rod is rotated and can not be collected, thus bringing adverse influences on the normal transportation and personnel movement in the roadways; in addition, the floor heave problem is aggravated by softened surrounding rocks soaked in water; secondly, conventional drilling methods may result in hole blocking phenomena in the floor drilling process, and the drill bit withdrawing and hole clearing work is very complicated during the drilling process; consequently, the efficiency of the floor anchoring work is severely affected; thirdly, during drilling the coal (rock) powder may enter into the roadway, increasing the difficulties in dust control in the roadways and endangering the physical health of the workers.
Therefore, it is of great significance to develop a floor anchoring drill rod that can be installed safely and simply and accomplish quick and clean construction for the present production in the coal mines.
Contents of the Invention
To overcome the drawbacks in the prior art, the present invention provides a floor anchoring and anti-blocking drill rod for coal mine, which is simple in structure, needs small investment, and integrates hole drilling, hole cleaning, and sewage removing functions.
The floor anchoring and anti-blocking drill rod for coal mine provided in the present invention comprises a hollow drill rod, wherein, a hollow sleeve is disposed in the PCT/CN2014/072184 wo 2015/010463 hollow drill rod, a front-end threaded connector is disposed on the front end of the hollow drill rod, a tail-end threaded connector is disposed on the tail end of the hollow drill rod, a connecting wire is wound helically on the hollow sleeve, the helical direction of the connecting wire is opposite to the working rotating direction of the drill rod, and helical clearance is formed between the connecting wire and the inner bore of the hollow drill rod; a waterproof slot is arranged in the tail of the hollow sleeve. A wrench clamping groove is arranged in the outer surface of the hollow drill rod at the front-end threaded connector and the tail-end threaded connector respectively; the wrench clamping groove is in a prismatic shape or square shape.
Beneficial effects: With the technical scheme described above, the drill rod provided in the present invention can not only be used to drill a floor efficiently in a coal mine, but also can realize hole drilling, hole cleaning, and sewage removing simultaneously. When the drill rod is working, clear water can be pressurized, the coal (rock) powder at the ends of the drill hole can be flushed and removed with pressurized clear water, and the sewage can be pumped out from the ends through the hollow sleeve, and then can be treated centrally. The apparatus effectively ensure anti-blocking effect of the floor anchoring drill rod for coal mine, solves the problem of hole blockage in floor construction with the conventional drilling method, eliminates complicated drill bit withdrawing and hole clearing procedures in the drilling process, and greatly improves the floor anchoring efficiency. The drill rod is simple in structure, has high adaptability, is easy to operate, and has wide practicability.
Description of the Drawings
Fig.l is a schematic structural diagram of the drill rod in the present invention;
Fig. 2 is a schematic structural diagram of the hollow sleeve in the present invention.
In the figures: 1 - hollow drill rod; 2 - hollow sleeve; 3 - wrench clamping groove; 4 -connecting wire; 5 - front-end threaded connector; 6 - tail-end threaded connector; 7 -waterproof slot.
Embodiments
Hereunder one example of the present invention will be described with reference to the accompanying drawings:
As shown in Figs. 1 and 2, the floor anchoring and anti-blocking drill rod for coal mine provided in the present invention mainly comprises a hollow drill rod 1 and a hollow sleeve 2, wherein, the hollow sleeve 2 is disposed in the hollow drill rod 1, a front-end threaded connector 5 is disposed on the front end of the hollow drill rod 1, a tail-end threaded connector 6 is disposed on the tail end of the hollow drill rod 1, a wrench clamping groove 3 is arranged in the outer surface of the hollow drill rod 1 at the front-end threaded connector 5 and the tail-end threaded connector 6 respectively, and the wrench clamping groove 3 is in a prismatic shape or square shape; a connecting wire 4 is wound helically on the hollow sleeve 2, the helical direction of the connecting wire 4 is opposite to the working rotating direction of the drill rod, and helical clearance is formed between the connecting wire 4 and the inner bore of the hollow drill rod 1; a waterproof slot 7 is arranged in the tail of the hollow sleeve 2.
Working process: After the drill rod is connected with a driller and a drill bit, the PCT/CN2014/072184 wo 2015/010463 hollow sleeve 2 is inserted into the waterproof slot 7, and the drill rod is tightened up with a wrench by coupling the wrench with the wrench clamping groove 3, so that the head and tail connection of the drill rod is realized and the drill rod is lengthened. The driller drives the drill rod to rotate via the tail-end threaded connector 6, so that the drilling work begins. At the same time, pressurized clear water is injected via the cavity between the hollow drill rod 1 and the hollow sleeve 2 into the drill rod, and is conveyed to the drill bit to wash the drilled hole as the helical connecting wire 4 between the hollow drill rod 1 and the hollow sleeve 2 rotates; the helical connecting wire 4 attains good effects for guiding the pressurized water and fixing the hollow sleeve 2; the channel in the hollow sleeve 2 is a sewage drainage channel. In the hole cleaning process, by a sewage draining device in the driller, the sewage is sucked from the drill bit into the hollow sleeve 2 of the floor anchoring and anti-blocking drill rod for coal mine, so that the sewage is drained out. The device solves the problem of hole blockage in floor construction with the conventional drilling method, eliminates complicated drill bit withdrawing and hole clearing procedures in the drilling process, and realizes hole drilling, hole cleaning, and sewage drainage simultaneously.
Claims (3)
- Claims1. A floor anchoring and anti-blocking drill rod for coal mine, comprising a hollow drill rod, wherein, a hollow sleeve is disposed in the hollow drill rod, a front-end threaded connector is disposed on the front-end of the hollow drill rod, a tail-end threaded connector is disposed on the tail end of the hollow drill rod so that the head and tail connection of the drill rod is realized and the drill rod is lengthened, a connecting wire is wound helically on the hollow sleeve, the helical direction of the connecting wire is opposite to the working rotating direction of the drill rod, and a helical clearance is formed between the connecting wire and the inner bore of the hollow drill rod; a waterproof slot is arranged in the tail end of the hollow sleeve.
- 2. The floor anchoring and anti-blocking drill rod for coal mine according to the claim 1, wherein: a wrench clamping groove is arranged in the outer surface of the hollow drill rod at the front-end threaded connector and the tail-end threaded connector respectively.
- 3. The floor anchoring and anti-blocking drill rod for coal mine according to the claim 2, wherein: the wrench clamping groove is in a prismatic shape or square shape.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310319386.8A CN103382817B (en) | 2013-07-26 | 2013-07-26 | Coal mine bottom plate anchoring anti-blocking drill rod |
| CN201310319386.8 | 2013-07-26 | ||
| PCT/CN2014/072184 WO2015010463A1 (en) | 2013-07-26 | 2014-02-18 | Anchoring and anti-blocking drill rod for coal mine floor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2014295717A1 AU2014295717A1 (en) | 2016-03-17 |
| AU2014295717B2 true AU2014295717B2 (en) | 2017-06-29 |
Family
ID=49490724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2014295717A Ceased AU2014295717B2 (en) | 2013-07-26 | 2014-02-18 | Anchoring and anti-blocking drill rod for coal mine floor |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20160138397A1 (en) |
| CN (1) | CN103382817B (en) |
| AU (1) | AU2014295717B2 (en) |
| RU (1) | RU2662831C2 (en) |
| WO (1) | WO2015010463A1 (en) |
| ZA (1) | ZA201601348B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382817B (en) * | 2013-07-26 | 2016-01-20 | 中国矿业大学 | Coal mine bottom plate anchoring anti-blocking drill rod |
| CN104806176A (en) * | 2015-04-24 | 2015-07-29 | 周延卿 | Low-resistance sliding type drill rod for geological horizontal drilling rig |
| CN105781456B (en) * | 2016-03-15 | 2018-04-13 | 泰安泰烁岩层控制科技有限公司 | Hand-held jumbolter dry drilling dust collector and dust removal method |
| CN107838139A (en) * | 2016-09-21 | 2018-03-27 | 河南理工大学 | A kind of colliery Roofbolt drill rod conduction method |
| CN106285481B (en) * | 2016-10-17 | 2018-07-31 | 华北理工大学 | A kind of broken coal hole-punching method of automatic screw type high pressure water |
| CN106437520B (en) * | 2016-10-17 | 2018-07-31 | 华北理工大学 | A kind of broken coal hole punched device of automatic screw type high pressure water |
| CN107237646B (en) * | 2017-06-28 | 2019-04-26 | 山东科技大学 | Large deformation constant resistance supporting grouted anchor bar, anchor cable and tunnel quantify method for protecting support |
| JP6955942B2 (en) * | 2017-09-22 | 2021-10-27 | 株式会社Ｔｆｔ | Ground buried steel pipe |
| CN109488365B (en) * | 2018-12-17 | 2024-06-18 | 中煤科工集团沈阳研究院有限公司 | Blocking prevention device and hole sealing method applied to soft coal seam extraction drilling wall protection |
| CN110219605A (en) * | 2019-07-16 | 2019-09-10 | 邹城兖矿泰德工贸有限公司 | The dedicated cutting drilling rod of erosion control release |
| CN111877981A (en) * | 2020-08-31 | 2020-11-03 | 中国科学院武汉岩土力学研究所 | Low-disturbance hole forming device and method for soft mudstone anchor rod/cable hole |
| CN114033315B (en) * | 2021-11-15 | 2023-09-15 | 河南理工大学 | Protruding coal seam shield pressure relief hole inner drilling tool and hole outer sealing system thereof |
| CN114753777B (en) * | 2022-04-28 | 2024-10-18 | 中煤科工集团西安研究院有限公司 | Double-spiral-groove externally-coated optical fiber drill rod and communication drilling machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4543019A (en) * | 1982-07-28 | 1985-09-24 | Tokyo Shibaura Denki Kabushiki Kaisha | Boring tool |
| US7152700B2 (en) * | 2003-11-13 | 2006-12-26 | American Augers, Inc. | Dual wall drill string assembly |
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| US3422913A (en) * | 1966-11-10 | 1969-01-21 | Val Dev Corp Du | Earth digging and conveying apparatus |
| BE795272A (en) * | 1972-05-16 | 1973-08-09 | Stork Conrad Bv | BOORINRICHTING |
| US4363366A (en) * | 1980-06-13 | 1982-12-14 | Keck Consulting Services, Inc. | Screened hollow stem auger for use in well drilling and testing process |
| SU1326730A1 (en) * | 1985-08-16 | 1987-07-30 | Московский Геологоразведочный Институт Им.Серго Орджоникидзе | Arrangement for hydraulic mining through wells |
| WO2004018828A1 (en) * | 2002-08-21 | 2004-03-04 | Presssol Ltd. | Reverse circulation directional and horizontal drilling using concentric coil tubing |
| US7147003B2 (en) * | 2003-06-03 | 2006-12-12 | Parker-Hannifin | Coaxial quick disconnect coupling |
| RU2248438C1 (en) * | 2004-05-25 | 2005-03-20 | Общество с ограниченной ответственностью "Сталь-Трест" | Drilling bar |
| RU2281381C2 (en) * | 2004-09-06 | 2006-08-10 | Открытое акционерное общество по буровому и транспортному оборудованию (ОАО "Рудгормаш") | Method and device for drill string assembling and disassembling |
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| CN101749039B (en) * | 2009-12-18 | 2011-07-06 | 河南理工大学 | Deep well drilling waterpower deslagging device of floor anchor rod hole of tunnel |
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| CN102345439A (en) * | 2010-08-03 | 2012-02-08 | 楚顺利 | Full-hydraulic double-rod soft coal drilling machine |
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| CN202417555U (en) * | 2012-01-05 | 2012-09-05 | 淮南市顺辉锚固有限公司 | Left-hand turning anchor rod |
| CN102678040B (en) * | 2012-05-11 | 2014-09-10 | 天地科技股份有限公司 | Drilling device and method for baseplate in coal mine roadway |
| CN103382817B (en) * | 2013-07-26 | 2016-01-20 | 中国矿业大学 | Coal mine bottom plate anchoring anti-blocking drill rod |
-
2013
- 2013-07-26 CN CN201310319386.8A patent/CN103382817B/en active Active
-
2014
- 2014-02-18 WO PCT/CN2014/072184 patent/WO2015010463A1/en active Application Filing
- 2014-02-18 RU RU2016106945A patent/RU2662831C2/en active
- 2014-02-18 AU AU2014295717A patent/AU2014295717B2/en not_active Ceased
-
2016
- 2016-01-25 US US15/006,035 patent/US20160138397A1/en not_active Abandoned
- 2016-02-26 ZA ZA2016/01348A patent/ZA201601348B/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4543019A (en) * | 1982-07-28 | 1985-09-24 | Tokyo Shibaura Denki Kabushiki Kaisha | Boring tool |
| US7152700B2 (en) * | 2003-11-13 | 2006-12-26 | American Augers, Inc. | Dual wall drill string assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA201601348B (en) | 2017-05-31 |
| AU2014295717A1 (en) | 2016-03-17 |
| RU2016106945A (en) | 2017-08-31 |
| CN103382817A (en) | 2013-11-06 |
| RU2662831C2 (en) | 2018-07-31 |
| US20160138397A1 (en) | 2016-05-19 |
| WO2015010463A1 (en) | 2015-01-29 |
| CN103382817B (en) | 2016-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |