CN110529062A - A kind of prestress wire core barrel that can pulverize rock slag - Google Patents
A kind of prestress wire core barrel that can pulverize rock slag Download PDFInfo
- Publication number
- CN110529062A CN110529062A CN201910896925.1A CN201910896925A CN110529062A CN 110529062 A CN110529062 A CN 110529062A CN 201910896925 A CN201910896925 A CN 201910896925A CN 110529062 A CN110529062 A CN 110529062A
- Authority
- CN
- China
- Prior art keywords
- screw thread
- core
- rail screw
- inner tube
- tube
- 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.)
- Pending
Links
- 239000011435 rock Substances 0.000 title claims abstract description 62
- 239000002893 slag Substances 0.000 title claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 210000000078 claw Anatomy 0.000 claims abstract description 13
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 241001449342 Chlorocrambe hastata Species 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 24
- 239000000843 powder Substances 0.000 abstract description 18
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000000116 mitigating effect Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 7
- 238000010298 pulverizing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- -1 as pressure weakens Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012360 testing method Methods 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
-
- 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Marine Sciences & Fisheries (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of prestress wire core barrels that can pulverize rock slag, it is combined by steel strand wires fisher, the assembly of core outer tube, core inner tube assembly composition, the core inner tube assembly includes that both-end becomes rail screw thread core inner tube, become rail screw thread inner pipe joint, become rail screw thread clip spring seat, it fishes out spearhead and connects recovery tube, it is packed into inside recovery tube and plays claw, the connection of recovery tube one end plays card holder, playing card holder one end has adjusting to be threadedly coupled change rail screw thread inner pipe joint, become rail screw thread inner pipe joint one end connection both-end and becomes rail screw thread core inner tube, both-end becomes rail screw thread core inner tube one end and reconnects change rail screw thread clip spring seat.The present invention rotated drilling rod with 1-2 minutes, can pulverize the rock powder of rock slag cleaning accumulation, the significantly abrasion of the labor intensity and machine of mitigation operator, increase the economic benefit of worker and mine.
Description
The present invention relates to during multi-angle boring coring, can pulverize rock in change prestress wire for technical field
The prestress wire core barrel of slag.
Background technique needs to go out rock powder to drill bit cooling with water, because of the deep meeting that drills in horizontal drilling location of the coring procedure
It is oblique to lead to bottom hole water, when repeating coring every time, after pulling off core, core inner tube is proposed with prestress wire fisher
When, core inner tube and drilling rod annular gap is small can generate negative pressure, some rock slags of suck-back, rock powder, as pressure weakens, rock slag rock powder
It can sink to inside drilling rod, when waiting again with the empty core inner tube of prestress wire feeding, rock slag, rock powder can hinder in core
Pipe reaches bottom hole, if rotary drill rod, core inner tube assembly does not turn, and core inner tube is helped to pulverize the rock powder of rock slag cleaning accumulation,
It just can solve the problem of core inner tube is sent less than bottom hole.Because having bearing, core between conventional core pipe assembly and core inner tube
Inner tube is blocked by rock slag and drilling rod, can be rotated together, cannot be pulverized rock slag with drilling rod, and core inner tube is just sent less than bottom hole, this
Sample must manually extract whole drilling rods, after clearing up the rock slag rock powder blocked, then whole drilling rods are sent into hole and continue to creep into, such as
300 meters of drilling rods, which put forward to be sent into, to be gone, and 2-3 hour must be wasted.
Summary of the invention technical problem solved by the present invention is with prestress wire fisher be sent into core inner tube when, meeting
The obstruction for encountering rock slag rock powder, the problem of causing core inner tube to be sent less than bottom hole, the annular gap of core inner tube and drilling rod only has 2
Core inner tube can be sent to 300 meters of depths although prestress wire toughness, intensity are very high by mm-3mm, more arrive hole bed rock slag
Rock powder is more, can block core inner tube, if probing task when being 400 meters or more of hole, will generate feed rate slow, rock slag
Blocking core inner tube can't get into.If solving the rock powder for pulverizing rock slag, cleaning is accumulated, conventional core by rotary drill rod
Pipe assembly and core inner tube, which can separate, to be rotated, and can't resolve rock slag, rock powder blocks the problem of core inner tube is advanced, this hair
It is bright to disclose a kind of prestress wire core barrel that pulverize rock slag, dextrorotation is rotated forward using the dextrorotation of prestress wire and drilling rod
The same rotation direction, rotation drilling rod achieve the purpose that core inner tube does not turn that rock slag can be pulverized.
Technical solution disclosed by the invention is as follows:
A kind of prestress wire core barrel that can pulverize rock slag is combined, the assembly of core outer tube, rock by steel strand wires fisher
In-core pipe assembly composition, it is characterised in that: the core inner tube assembly includes that both-end becomes rail screw thread core inner tube, becomes in rail screw thread
Pipe fitting becomes rail screw thread clip spring seat, and the both-end becomes rail screw thread core inner tube, becomes rail screw thread inner pipe joint, becomes rail screw thread circlip
Change rail screw thread on seat is in core inner tube and clip spring seat, and intersection processes flat thread right-hand thread and flat thread left-hand thread, spiral shell
Line bottom is than the screw thread of land width, and fishing spearhead connection recovery tube, recovery tube inside, which is packed into, plays claw, and recovery tube one end connects bullet card
Frame, playing card holder one end has adjusting to be threadedly coupled change rail screw thread inner pipe joint, is locked with clamping screw, becomes rail screw thread inner tube and connects
First end connection both-end becomes rail screw thread core inner tube, and both-end becomes rail screw thread core inner tube one end and reconnects change rail screw thread clip spring seat.
The flighting front end for becoming rail screw thread inner pipe joint, processing limit, is locked with clamping screw.
The steel strand wires fisher combination includes prestress wire lockset, prestress wire, fisher, prestress steel
Twisted wire lockset locks prestress wire and reconnects fisher, and fishing lance pawl blocks fishing spearhead on fisher, and the insertion of anti-rotation claw is anti-
Turn card slot.
The core outer tube assembly includes centralizer, reamer one, reamer two, core outer tube, connects bullet by centralizer
Card room, bullet card room connect reamer one, and reamer one end connects core outer tube, and the core outer tube other end connects reamer two, expand
Device two one end in hole connects drill bit, and the assembly of core outer tube finishes, core inner tube assembly is packed into core outer tube, is blocked by bullet claw
Bullet card room.
The present invention has the advantages that 1, pulverize the prestress wire core barrel of rock slag using steel strand wires, fisher and rock
The design of core pipe assembly anti-rotation, core inner tube assembly inner elastic cartridge frame connect anti-rotation design and core inner tube connection screw thread with inner pipe joint
The design of anti-rotation, so that prestress wire, fisher and core inner tube form one, positive and negative rotation, which is not released, to fall off；2, it utilizes
Rotation direction of the dextrorotation of prestress wire as drilling rod rotating forward dextrorotation, rotation drilling rod reach core inner tube and do not turn that rock slag can be pulverized
Purpose；3, the present invention rotated drilling rod with 1-2 minutes, can pulverize the rock powder of rock slag cleaning accumulation, mitigate operation significantly
The abrasion of the labor intensity and machine of person increases the economic benefit of worker and mine.
Detailed description of the invention Fig. 1 steel strand wires fisher and core pipe assembly anti-rotation schematic diagram；
Fig. 2 core pipe assembly inner elastic cartridge frame and inner pipe joint anti-rotation structure figure；
Fig. 3 clamping screw sectional drawing；
Fig. 4 becomes rail screw thread schematic diagram；
Fig. 5 core pipe assembly diagrammatic cross-section；
1, prestress wire in figure；2, prestress wire lockset；3, fisher；4, lance pawl is fished out；5, anti-rotation claw；6,
Fish out spearhead；7, anti-rotation card slot；8, centralizer；9, recovery tube；10, bullet card room；11, claw is played；12, card holder is played；13, locking screw
Bolt；14, become rail screw thread inner pipe joint；15, reamer one；16, both-end becomes rail screw thread core inner tube；17, core outer tube；18, expand
Hole device two；19, become rail screw thread clip spring seat；20, circlip；21, drill bit；22, screw thread is adjusted.
Specific embodiment
It is as follows that one kind pulverizing rock slag rock powder core barrel assembly mounting structure:
Prestress wire lockset 2 locks prestress wire 1 and reconnects fisher 3, and fishing lance pawl 4 blocks on fisher
Spearhead 6 is fished out, anti-rotation claw 5 is embedded in anti-rotation card slot 7, and the combination of fisher anti-rotation is completed.
Core inner tube assembly connects recovery tube 9 by fishing spearhead 6, is packed into inside recovery tube 9 and plays claw 11,9 one end of recovery tube
Connection plays card holder 12, and playing 12 one end of card holder has adjusting threaded connection to become rail screw thread inner pipe joint 14, regulates inner tube length, uses
Clamping screw 13 is locked, plays the role of anti-rotation, becomes 14 one end of rail screw thread inner pipe joint connection both-end and becomes rail screw thread core inner tube 16,
Both-end becomes 16 one end of rail screw thread core inner tube and reconnects change rail screw thread clip spring seat 19, becomes inside rail screw thread clip spring seat 19 and loads onto card
Spring 20 is the assembly of core inner tube above.
The assembly of core outer tube connects bullet card room 10 by centralizer 8, and bullet card room 10 connects reamer 1, plays support core
Outer tube is not by rock frictional test, and one 15 one end of reamer connects core outer tube 17, and 17 other end of core outer tube is in connection reamer two
18,2 18 one end of reamer connects drill bit 21, and the assembly of core outer tube finishes, core inner tube assembly is packed into core outer tube, by
It plays claw 11 and blocks bullet card room 10.
The prestress wire core barrel of rock slag is pulverized using steel strand wires, fisher and the design of core pipe assembly anti-rotation, rock
In-core pipe assembly inner elastic cartridge frame connects the design of anti-rotation design and core inner tube connection screw thread anti-rotation with inner pipe joint, so that answering in advance
Power steel strand wires, fisher and core inner tube form one, and positive and negative rotation, which is not released, to fall off:
1, steel strand wires, fisher and core pipe assembly anti-rotation:
When core inner tube is blocked by rock slag rock powder, the dextrorotation of prestress wire 1 itself, drilling rod rotates forward and dextrorotation, and two
Rotating Vortex, prestress wire 1 will not be deformed loosely, instead can be tight strong to change because of dextrorotation.Prestress wire 1 one exists
It is fixed in steel strand wires winder, is placed in ground, one is lockked fisher 3 by steel strand wires lockset 2, and latching does not turn.Fisher
Anti-rotation claw 5 and the anti-rotation card slot 7 of core pipe assembly fishing spearhead block, control core inner tube assembly and steel strand wires fisher not
Turn.(see Fig. 1)
2, core inner tube assembly inner elastic cartridge frame connects anti-rotation with inner pipe joint:
For bullet card holder 12 and inner pipe joint in core inner tube assembly by being threadedly coupled, screw thread is to adjust core inner tube front end card
Long short air gap between spring abutment and drill bit, Guo Shuiyong.When using metric thread, gap can be finely tuned, but encountering rock slag and block,
Drilling rod rotates forward, and if inner pipe joint screw thread is that reversion is left-handed, can release and fall off.It is normal to bore if inner pipe joint screw thread is to rotate forward dextrorotation
It when not broken into core, is blocked by the circlip in clip spring seat, forms one, left-hand thread, which can also release, to fall off.Former routine core
The design of pipe is to mix up gap to be locked with double nut, can only a steering use.It is now connected using right-hand thread, in interior pipe joint screw thread
Front end processes several anti-rotation limits, after (see Fig. 2, Fig. 3) mixes up inner tube gap, is lockked with bolt, plays positive and negative rotation and prevents transferring to
With.(gap 3-5mm must be retained between core inner tube leading portion clip spring seat and drill bit, often change a drill bit and just adjust once)
3, core inner tube connection screw thread anti-rotation:
Core inner tube is all right-hand thread dextrorotation installation when normal drilling, and when rock slag rock powder blocks core inner tube, at this moment drilling rod is being just
Turn, if it is right-hand thread, core inner tube and drilling rod when rock slag is stuck that core inner tube is connected with inner pipe joint, rotates forward, hold simultaneously very much
Easy shackle falls off.If drilling rod rotates forward using left-hand thread screw thread, rock slag blocks core inner tube, and left-hand thread will not fall off.But it is normally boring
Into when, core inner tube and the equidirectional rotation of core outer tube are turned right, and core enters core inner tube, when core is not detached from rock stratum, card
Circlip in spring abutment blocks core and does not turn, and has reversely firmly, left-hand thread screw thread can also fall off.
Change rail screw thread of the invention, in the core inner tube and clip spring seat of thin-walled, intersection process flat thread right-hand thread and
Flat thread left-hand thread, (see Fig. 4) screw thread bottom width, screw thread top is narrow, and screw thread bottom is than land width, since positive left-hand thread left-right rotary is to cutting
Angle, just reserves the crosspoint of thread tracks, such as encounters right-hand thread tripping, when the stress of front end, can change to left-hand thread locking, left-hand thread automatically
When tripping, right-hand thread locking can be also changed to.
When prestress wire pushes core inner tube, rock slag is such as encountered, rock powder blocks core inner tube, rotating forward rotation brill
Bar, it is locked to left-hand thread screw thread that core inner tube can become rail.Core Internal Pipe Thread will not be made to fall off because of the rotating forward of drilling rod and core outer tube,
Core inner tube does not turn, and drilling rod and core outer tube turn, and can just pulverize rock slag in this way.When dismantling change rail screw thread, with portable female thread, it will become
Rail screw thread goes to right-hand thread dextrorotation or left-hand thread is left-handed, can both dismantle and become rail screw thread box and pin.In summary actual conditions, the present invention are pre-
Prestress steel strand core barrel, when pulverizing rock slag rock powder, drilling rod and core outer tube turn, and core inner tube does not turn to pulverize rock slag and clear
Rock powder is managed, will not just be threaded off with the core inner tube and clip spring seat that become rail screw thread.
Claims (4)
1. a kind of prestress wire core barrel that can pulverize rock slag is combined, the assembly of core outer tube, core by steel strand wires fisher
Inner tube assembly composition, it is characterised in that: the core inner tube assembly includes that both-end becomes rail screw thread core inner tube (16), becomes rail screw thread
Inner pipe joint (14) becomes rail screw thread clip spring seat (19), and the both-end becomes rail screw thread core inner tube, becomes rail screw thread inner pipe joint, becomes
Change rail screw thread on rail screw thread clip spring seat is in core inner tube and clip spring seat, and intersection processes flat thread right-hand thread and rectangular spiral shell
Line left-hand thread, screw thread of the screw thread bottom than land width, fishing spearhead (6) connection recovery tube (9), internal be packed into of recovery tube (9) play claw
(11), recovery tube (9) one end connection plays card holder (12), and playing card holder (12) one end has adjusting screw thread (22) connection to become rail screw thread inner tube
Connector is locked with clamping screw (13), is become rail screw thread inner pipe joint (14) one end connection both-end and is become rail screw thread core inner tube
(16), both-end becomes rail screw thread core inner tube (16) one end reconnection and becomes rail screw thread clip spring seat (19).
2. a kind of prestress wire core barrel that can pulverize rock slag according to claim 1, it is characterised in that: the change
The flighting front end of rail screw thread inner pipe joint, processing limit, is locked with clamping screw.
3. a kind of prestress wire core barrel that can pulverize rock slag according to claim 1, it is characterised in that: the steel
The combination of twisted wire fisher includes prestress wire lockset (2), prestress wire (1), fisher (3), prestress wire
Lockset (2) locks prestress wire (1) and reconnects fisher (3), and fishing spearhead (6) is blocked in fishing lance pawl (4) on fisher (3),
Anti-rotation claw (5) is embedded in anti-rotation card slot (7).
4. a kind of prestress wire core barrel that can pulverize rock slag according to claim 1, it is characterised in that: the rock
The assembly of core outer tube includes centralizer (8), reamer one (15), reamer two (18), core outer tube (17), is connected by centralizer (8)
Bullet card room (10) is connect, bullet card room (10) connects reamer one (15), and reamer one (15) one end connects core outer tube (17), core
Outer tube (17) other end connects reamer two (18), and reamer two (18) one end connects drill bit (21), and the assembly of core outer tube finishes,
Core inner tube assembly is packed into core outer tube, bullet card room (10) is blocked by bullet claw (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896925.1A CN110529062A (en) | 2019-09-23 | 2019-09-23 | A kind of prestress wire core barrel that can pulverize rock slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896925.1A CN110529062A (en) | 2019-09-23 | 2019-09-23 | A kind of prestress wire core barrel that can pulverize rock slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110529062A true CN110529062A (en) | 2019-12-03 |
Family
ID=68669580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910896925.1A Pending CN110529062A (en) | 2019-09-23 | 2019-09-23 | A kind of prestress wire core barrel that can pulverize rock slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110529062A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191416212A (en) * | 1914-07-07 | 1915-06-17 | Alexander Mcnamara | Improvements in Means for Connecting the Drill Rod, Core Barrel and Sediment Tube of Rotary Boring Apparatus. |
| GB339426A (en) * | 1928-11-12 | 1930-12-11 | Chicago Pneumatic Tool Co | Boring apparatus |
| GB816271A (en) * | 1956-06-15 | 1959-07-08 | Longyear E J Co | Improved rotary core drill |
| FR1518714A (en) * | 1966-12-21 | 1968-03-29 | Method and device for measuring orogenic movements occurring transversely to a borehole | |
| SU981574A1 (en) * | 1981-04-20 | 1982-12-15 | За витель | Double-core-drilling tool |
| SU1521854A1 (en) * | 1988-02-18 | 1989-11-15 | Московский Геологоразведочный Институт Им.Серго Орджоникидзе | Core tool |
| JPH11256974A (en) * | 1998-03-09 | 1999-09-21 | Nlc:Kk | Core barrel for extracting rock-core, drill rod and swivel joint |
| CN101864916A (en) * | 2010-05-27 | 2010-10-20 | 吉林大学 | Hole bottom freezing cord coring drill and coring method thereof |
| CN102268970A (en) * | 2011-07-05 | 2011-12-07 | 江苏省无锡探矿机械总厂有限公司 | Core catching mechanism |
| CN104653134A (en) * | 2014-12-16 | 2015-05-27 | 吉林大学 | Liquid-nitrogen natural-gas hydrate hole bottom freezing and rope coring drill bit |
| CN205297423U (en) * | 2016-01-28 | 2016-06-08 | 吉林大学 | Inner tube of coring from adaptive type |
| CN106194088A (en) * | 2016-07-28 | 2016-12-07 | 北京振冲工程股份有限公司 | A kind of drilling deep hole system and improve deep hole grout curtain borehole accuracy and the method for work efficiency |
| CN106609662A (en) * | 2015-10-24 | 2017-05-03 | 天津华勘钻探机具有限公司 | Novel tunnel drilling tool |
| CN210564434U (en) * | 2019-09-23 | 2020-05-19 | 赤峰市浩峰钻机有限责任公司 | Prestressed steel strand rock core pipe capable of grinding rock slag |
-
2019
- 2019-09-23 CN CN201910896925.1A patent/CN110529062A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191416212A (en) * | 1914-07-07 | 1915-06-17 | Alexander Mcnamara | Improvements in Means for Connecting the Drill Rod, Core Barrel and Sediment Tube of Rotary Boring Apparatus. |
| GB339426A (en) * | 1928-11-12 | 1930-12-11 | Chicago Pneumatic Tool Co | Boring apparatus |
| GB816271A (en) * | 1956-06-15 | 1959-07-08 | Longyear E J Co | Improved rotary core drill |
| FR1518714A (en) * | 1966-12-21 | 1968-03-29 | Method and device for measuring orogenic movements occurring transversely to a borehole | |
| SU981574A1 (en) * | 1981-04-20 | 1982-12-15 | За витель | Double-core-drilling tool |
| SU1521854A1 (en) * | 1988-02-18 | 1989-11-15 | Московский Геологоразведочный Институт Им.Серго Орджоникидзе | Core tool |
| JPH11256974A (en) * | 1998-03-09 | 1999-09-21 | Nlc:Kk | Core barrel for extracting rock-core, drill rod and swivel joint |
| CN101864916A (en) * | 2010-05-27 | 2010-10-20 | 吉林大学 | Hole bottom freezing cord coring drill and coring method thereof |
| CN102268970A (en) * | 2011-07-05 | 2011-12-07 | 江苏省无锡探矿机械总厂有限公司 | Core catching mechanism |
| CN104653134A (en) * | 2014-12-16 | 2015-05-27 | 吉林大学 | Liquid-nitrogen natural-gas hydrate hole bottom freezing and rope coring drill bit |
| CN106609662A (en) * | 2015-10-24 | 2017-05-03 | 天津华勘钻探机具有限公司 | Novel tunnel drilling tool |
| CN205297423U (en) * | 2016-01-28 | 2016-06-08 | 吉林大学 | Inner tube of coring from adaptive type |
| CN106194088A (en) * | 2016-07-28 | 2016-12-07 | 北京振冲工程股份有限公司 | A kind of drilling deep hole system and improve deep hole grout curtain borehole accuracy and the method for work efficiency |
| CN210564434U (en) * | 2019-09-23 | 2020-05-19 | 赤峰市浩峰钻机有限责任公司 | Prestressed steel strand rock core pipe capable of grinding rock slag |
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