CN109209283A - It is lower to drilling with boring plugging type slag-draining device and method - Google Patents
It is lower to drilling with boring plugging type slag-draining device and method Download PDFInfo
- Publication number
- CN109209283A CN109209283A CN201811332263.7A CN201811332263A CN109209283A CN 109209283 A CN109209283 A CN 109209283A CN 201811332263 A CN201811332263 A CN 201811332263A CN 109209283 A CN109209283 A CN 109209283A
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- drilling
- connecting rod
- deslagging
- conduit
- hollow connecting
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- 238000005553 drilling Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 238000007599 discharging Methods 0.000 claims abstract description 35
- 230000000694 effects Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 230000004888 barrier function Effects 0.000 claims description 23
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 13
- 239000003245 coal Substances 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 5
- 238000003915 air pollution Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002893 slag 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Marine Sciences & Fisheries (AREA)
- Earth Drilling (AREA)
Abstract
It is lower to drilling with boring plugging type slag-draining device, including vertically arranged upper hollow connecting rod, under hollow connecting rod, sealing bearing, block cushion rubber, upper deslagging conduit and lower dreg discharging conduit；Upper hollow connecting rod and under hollow connecting rod connect respectively with the upper port of bearing inner race and lower port, it blocks cushion rubber and is set in sealing bearing outer ring, upper deslagging conduit and lower dreg discharging conduit are provided with two, two lower dreg discharging conduits, which are assemblied in, to be blocked between cushion rubber set and sealing bearing outer ring, and two lower dreg discharging conduit upper ends correspond to two upper coaxial connections in deslagging conduit lower end.The invention also discloses lower to drilling with the Slagoff method for boring plugging type slag-draining device.Structure of the invention is compact, is convenient for operation, and construction method is simple, can guarantee method that is effective, stablizing deslagging power, for improving small-bore, the hole quality and deslagging effect of larger depth drilling reduce air pollution, it is small-bore, the innovation on deep drill Slagoff method.
Description
Technical field
The invention belongs to lane (tunnel) road support technology fields, and in particular to drilling with brill plugging type slag-draining device under a kind of
And method.
Background technique
Drilling is the important behaviour form of coal petrography cutting in coal and rock, and according to requirement of engineering, drilling depth, direction can not yet
Together.In the construction such as mine support, rock blasting, generally require to creep into several meters to tens meters depth and towards drilling not etc.,
The discharge that drilling at this time generates landwaste is then the key factor for influencing drilling efficiency.Deslagging during domestic and international drilling construction at present
Method mainly has: cutting pick-up with high pressure water, high-pressure blast deslagging and mechanical spiral deslagging.But the above deslagging mode is primarily adapted for use in large hole
Drilling of diameter such as geotechnical boring, gas extraction hole etc..Diameter downward for direction is smaller and the biggish drilling construction of depth, high
Water is pressed to influence vulnerable to drilling depth, as drilling depth increases, water conservancy gradient is gradually decreased, it is extremely difficult to ideal deslagging pressure,
And the influence of high-pressure blast and mechanical spiral deslagging mode vulnerable to hole wall integrity, in collapse hole area, deslagging power drops suddenly, easily causes
Plug-hole, armful brill, bit freezing etc., stablize effective deslagging power to not can guarantee, in addition, both deslagging modes also will cause sky
Gas seriously pollutes.Therefore, a kind of method that can guarantee effective, stable deslagging power is found, for improving small-bore, larger depth
The hole quality and deslagging effect for spending drilling, reduce air pollution, are of great significance.
Summary of the invention
The present invention provides that a kind of to be able to maintain constant negative pressure deslagging empty to solve shortcoming in the prior art
Between, to formed stablize effective deslagging power, improve Completion of Drilling Hole quality and deslagging effect it is lower to drilling with boring plugging type
Slag-draining device and method.
In order to solve the above technical problems, the present invention adopts the following technical scheme: it is lower to drilling with bore plugging type slag-draining device,
Including vertically arranged upper hollow connecting rod, under hollow connecting rod, sealing bearing, block cushion rubber, upper deslagging conduit and lower row
Slag conduit；
Upper hollow connecting rod lower end is protruded into and is threadedly coupled in the upper port of sealing bearing inner race, under hollow connecting rod upper end
Portion protrudes into and is threadedly coupled in the lower port of sealing bearing inner race, blocks cushion rubber and is set in sealing bearing outer ring, seals bearing
Outer ring in axial direction offers two transparent interior semicircle elongated slots, blocks cushion rubber set inner wall and in axial direction offers
Two transparent outer semicircle elongated slots, two interior semicircle elongated slots and two outer semicircle elongated slots correspond to form two cylinders
Hole, upper deslagging conduit and lower dreg discharging conduit are provided with two, and two lower dreg discharging conduit correspondences are assemblied in two cylindrical holes, and two
Lower dreg discharging conduit upper end corresponds to two upper coaxial connections in deslagging conduit lower end.
Sealing bearing and closure cushion rubber upper end are provided with the upper barrier piece covered outside upper hollow connecting rod, seal bearing
The lower barrier piece covered under outside hollow connecting rod, lower dreg discharging conduit upper and lower end are provided with cushion rubber lower end is blocked
It is each passed through barrier piece and lower barrier piece.
Upper hollow connecting rod upper end is connect with boring drilling rod coaxial line, under hollow connecting rod lower end and boring brill
Head coaxial line connection, the outer diameter of drill bit is equal with the outer diameter of cushion rubber is blocked, and the outer diameter of drill bit is greater than the outer diameter of drilling rod, upper hollow company
The outer diameter of extension bar, the drilling rod hollow connecting rod under is equal.
Two lower dreg discharging conduits are symmetrically arranged about sealing bearing axis, are provided between two upper deslagging conduits
The positioning ring outside upper hollow connecting rod is covered, positioning ring, two upper deslagging conduits have between upper hollow connecting rod outer wall
There is gap.
It is lower to include the following steps to drilling with the Slagoff method for boring plugging type slag-draining device,
(1) group is loaded to drilling with brill plugging type slag-draining device；
(2) by drill bit, hollow connecting rod lower end is connect under, and upper hollow connecting rod upper end is connect with drilling rod lower end；
(3) positioning ring of the upper deslagging conduit of several connections two, positioning ring, two upper deslagginves are respectively mounted outside drilling rod
Conduit has gap between drilling-rod external wall；
(4) two upper deslagging conduit upper ends are connected into negative pressure water pump by high pressure deslagging hose, drilling rod upper end is installed to drilling machine
On, drilling rod upper port is connected into water supply pump by high-pressure water inlet hose；
(5) starting drilling machine at the coal petrography of setting to drilling, while starting water supply pump and negative pressure water pump；
(6) drilling machine drive drilling rod high speed rotation, drilling rod pass sequentially through hollow connecting rod, sealing bearing inner race, under hollow connection
Bar drives drilling bit high-speed rotary, and drill bit cuts coal petrography, due to being provided with ball between the outer ring and inner ring of sealing bearing,
When sealing bearing inner race rotation, sealing bearing outer ring is maintained static, and lower dreg discharging conduit and upper deslagging conduit maintain static；It is boring
Into in the process, high pressure water by drilling rod, upper hollow connecting rod, sealing bearing inner race, under the inside of hollow connecting rod and drill bit it is logical
Road enters bottom hole, and the debris generated with bit cutting coal petrography is mixed to form slurries, and negative pressure water pump is by upper deslagging conduit under
Deslagging catheter interior provides negative pressure, and the slurries inside bottom hole are extracted upwards by lower dreg discharging conduit lower port, blocks cushion rubber packet
It is wrapped on the outside of sealing bearing, not only acts as the effect for fixing two lower dreg discharging conduits, and always with boring deeply drilling, and by hole
Bottom forms constant sealing space, to can guarantee that bottom hole has stable negative pressure deslagging power, guarantees that slurries continue upward row
Out；
(7) after drilling to set depth, brill is moved back, closes drilling machine, water supply pump and negative pressure water pump；
(8) step (5)-(7) are repeated, bore operation is carried out to next boring point.
By adopting the above technical scheme, the closure cushion rubber material in the present invention is high-intensitive, high tenacity rubber, is in hollow circuit cylinder
Shape structure is wrapped in sealing Bearing outer, and the cylindrical hole formed between sealing bearing outer ring is to accommodate and fix lower dreg discharging
Conduit.
Upper deslagging conduit and lower dreg discharging conduit are high duty metal pipe, are passed through between upper deslagging conduit and lower dreg discharging conduit
It is threadedly coupled.
Upper barrier piece and lower barrier piece are in disk form, and upper barrier piece, lower barrier piece are identical with the diameter of closure cushion rubber, on
Barrier piece and lower barrier piece material are high duty metal, and upper barrier piece and lower barrier on piece open that there are three round holes side by side, can be made
Upper hollow connecting rod, under hollow connecting rod and lower dreg discharging conduit pass through, being threadedly attached in the supravasal nut of lower dreg discharging will
Upper barrier piece and the fastening of lower barrier piece can effectively prevent blocking cushion rubber in drilling process and sealing bearing slip, thus deslagging
Component forms constant confined space with brill always, stable deslagging power has been effectively ensured, and when blocking cushion rubber aging,
Upper barrier piece and lower barrier piece can be dismantled, what fast reading more renewed works as closure cushion rubber.
The setting of positioning ring can avoid upper deslagging conduit generated with high-speed rotating drilling rod and upper hollow connecting rod contact and
It is worn.
In conclusion the principle of the invention is scientific, design is reasonable, compact-sized, convenient for operation, construction method is simple, investment
It is low in cost, it can guarantee method that is effective, stablizing deslagging power, for improving small-bore, the pore-forming matter of larger depth drilling
Amount and deslagging effect reduce air pollution, are small-bores, the innovation on deep drill Slagoff method, have it is good economical and
Social benefit.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is schematic diagram of the present invention in bore operation.
Specific embodiment
As shown in figure and Fig. 2, it is of the invention it is lower to drilling with plugging type slag-draining device is bored, including vertically arranged overhead
Heart connecting rod 1, under hollow connecting rod 2, sealing bearing 3, block cushion rubber 5, upper deslagging conduit 6 and lower dreg discharging conduit 7；
Upper hollow 1 lower end of connecting rod is protruded into and is threadedly coupled in the upper port of sealing 3 inner ring of bearing, under hollow connecting rod 2
Upper end is protruded into and is threadedly coupled in the lower port of sealing 3 inner ring of bearing, blocks cushion rubber 5 and is set in sealing 3 outer ring of bearing, close
Envelope 3 outer ring of bearing in axial direction offers two transparent interior semicircle elongated slots, blocks 5 sets of inner walls of cushion rubber along axial direction side
To two transparent outer semicircle elongated slots are offered, two interior semicircle elongated slots and two outer semicircle elongated slots correspond to be formed
Two cylindrical holes, upper deslagging conduit 6 and lower dreg discharging conduit 7 are provided with two, and two correspondences of lower dreg discharging conduit 7 are assemblied in two
In cylindrical hole, two 7 upper ends of lower dreg discharging conduit correspond to two upper coaxial connections in 6 lower end of deslagging conduit.
Sealing bearing 3 and closure 5 upper end of cushion rubber are provided with the upper barrier piece 8 covered outside upper hollow connecting rod 1, seal
Bearing 3 and closure 5 lower end of cushion rubber are provided with the lower barrier piece 4 covered under outside hollow connecting rod 2,7 upper end of lower dreg discharging conduit
Portion and lower end are each passed through barrier piece 8 and lower barrier piece 4.
Upper hollow 1 upper end of connecting rod is connect with 10 coaxial line of drilling rod of drilling 9, under hollow 2 lower end of connecting rod with drill 9
The connection of 11 coaxial line of drill bit, the outer diameter of drill bit 11 is equal with the outer diameter of cushion rubber 5 is blocked, and the outer diameter of drill bit 11 is greater than drilling rod 10
Outer diameter, upper hollow connecting rod 1, the outer diameter of the hollow connecting rod 2 under of drilling rod 10 are equal.
Two lower dreg discharging conduits 7 are symmetrically arranged about sealing 3 center line of bearing, set between two upper deslagging conduits 6
Be equipped with the positioning ring covered outside upper hollow connecting rod 1, positioning ring, two upper deslagging conduits 6 with upper hollow 1 outer wall of connecting rod
Between have gap.Appended drawing reference 13 in Fig. 2 be lower in the present invention to drilling with boring plugging type slag-draining device.
It is lower to include the following steps to drilling with the Slagoff method for boring plugging type slag-draining device,
(1) group is loaded to drilling with brill plugging type slag-draining device；
(2) by drill bit 11, hollow 2 lower end of connecting rod is connect under, and upper hollow 1 upper end of connecting rod is connect with 10 lower end of drilling rod；
(3) positioning ring 15 of the upper deslagging conduit 6 of several connections two, positioning ring 15, two are respectively mounted outside drilling rod 10
Deslagging conduit 6 has gap between 10 outer wall of drilling rod on item；
(4) two upper 6 upper ends of deslagging conduit are connected into negative pressure water pump by high pressure deslagging hose, 10 upper end of drilling rod is installed to brill
On machine, 10 upper port of drilling rod is connected into water supply pump by high-pressure water inlet hose；
(5) starting drilling machine at the coal petrography of setting to drilling, while starting water supply pump and negative pressure water pump；
(6) drilling machine drives 10 high speed rotation of drilling rod, and drilling rod 10 passes sequentially through hollow connecting rod 1, sealing 3 inner ring of bearing, lower sky
Heart connecting rod 2 drives 11 high speed rotation of drill bit, and drill bit 11 cuts coal petrography, due to the outer ring of sealing bearing 3 and inner ring it
Between be provided with ball, when sealing 3 inner ring of bearing rotation, sealing 3 outer ring of bearing is maintained static, and lower dreg discharging conduit 7 and upper deslagging are led
Pipe 6 maintains static；In drilling process, high pressure water 14 by drilling rod 10, upper hollow connecting rod 1, sealing 3 inner ring of bearing, under
The inner passage of hollow connecting rod 2 and drill bit 11 enters bottom hole, cuts the debris that coal petrography generates with drill bit 11 and is mixed to form slurry
Liquid 12, negative pressure water pump is by providing negative pressure inside upper deslagging conduit 6 and lower dreg discharging conduit 7, under the slurries 12 inside bottom hole pass through
7 lower port of deslagging conduit is extracted upwards, is blocked cushion rubber 5 and is wrapped in 3 outside of sealing bearing, not only acts as and fix two lower dreg dischargings
The effect of conduit 7, and 9 are deeply drilled with boring always, and bottom hole is formed to constant sealing space, to can guarantee bottom hole tool
There is stable negative pressure deslagging power, guarantees that slurries 12 continue upward discharge；
(7) after drilling to set depth, brill is moved back, closes drilling machine, water supply pump and negative pressure water pump；
(8) step (5)-(7) are repeated, bore operation is carried out to next boring point.
The present embodiment not makes any form of restriction shape of the invention, material, structure etc., all according to this hair
Bright technical spirit any simple modification, equivalent change and modification to the above embodiments, belong to the technology of the present invention side
The protection scope of case.
Claims (5)
- To drilling with brill plugging type slag-draining device under 1., it is characterised in that: including vertically arranged upper hollow connecting rod, lower sky Heart connecting rod, blocks cushion rubber, upper deslagging conduit and lower dreg discharging conduit at sealing bearing；Upper hollow connecting rod lower end is protruded into and is threadedly coupled in the upper port of sealing bearing inner race, under hollow connecting rod upper end Portion protrudes into and is threadedly coupled in the lower port of sealing bearing inner race, blocks cushion rubber and is set in sealing bearing outer ring, seals bearing Outer ring in axial direction offers two transparent interior semicircle elongated slots, blocks cushion rubber set inner wall and in axial direction offers Two transparent outer semicircle elongated slots, two interior semicircle elongated slots and two outer semicircle elongated slots correspond to form two cylinders Hole, upper deslagging conduit and lower dreg discharging conduit are provided with two, and two lower dreg discharging conduit correspondences are assemblied in two cylindrical holes, and two Lower dreg discharging conduit upper end corresponds to two upper coaxial connections in deslagging conduit lower end.
- 2. it is according to claim 1 it is lower to drilling with boring plugging type slag-draining device, it is characterised in that: sealing bearing and closure Cushion rubber upper end is provided with the upper barrier piece covered outside upper hollow connecting rod, and sealing bearing and closure cushion rubber lower end are provided with Cover the lower barrier piece under outside hollow connecting rod, lower dreg discharging conduit upper and lower end be each passed through barrier piece and under every Baffle.
- 3. it is according to claim 2 it is lower to drilling with boring plugging type slag-draining device, it is characterised in that: in upper hollow connecting rod End connect with boring drilling rod coaxial line, under hollow connecting rod lower end connect with boring drill bit coaxial line, drill bit outside Diameter is equal with the outer diameter of cushion rubber is blocked, and the outer diameter of drill bit is greater than the outer diameter of drilling rod, upper hollow connecting rod, drilling rod and under hollow connection The outer diameter of bar is equal.
- 4. it is according to claim 3 it is lower to drilling with bore plugging type slag-draining device, it is characterised in that: two lower dreg discharging conduits It is symmetrically arranged about sealing bearing axis, is provided with and is covered outside upper hollow connecting rod between two upper deslagging conduits Positioning ring, positioning ring, two upper deslagging conduits have gap between upper hollow connecting rod outer wall.
- 5. according to claim 4 lower to the Slagoff method to drill with brill plugging type slag-draining device, it is characterised in that: including Following steps,(1) group is loaded to drilling with brill plugging type slag-draining device；(2) by drill bit, hollow connecting rod lower end is connect under, and upper hollow connecting rod upper end is connect with drilling rod lower end；(3) positioning ring of the upper deslagging conduit of several connections two, positioning ring, two upper deslagginves are respectively mounted outside drilling rod Conduit has gap between drilling-rod external wall；(4) two upper deslagging conduit upper ends are connected into negative pressure water pump by high pressure deslagging hose, drilling rod upper end is installed to drilling machine On, drilling rod upper port is connected into water supply pump by high-pressure water inlet hose；(5) starting drilling machine at the coal petrography of setting to drilling, while starting water supply pump and negative pressure water pump；(6) drilling machine drive drilling rod high speed rotation, drilling rod pass sequentially through hollow connecting rod, sealing bearing inner race, under hollow connection Bar drives drilling bit high-speed rotary, and drill bit cuts coal petrography, due to being provided with ball between the outer ring and inner ring of sealing bearing, When sealing bearing inner race rotation, sealing bearing outer ring is maintained static, and lower dreg discharging conduit and upper deslagging conduit maintain static；It is boring Into in the process, high pressure water by drilling rod, upper hollow connecting rod, sealing bearing inner race, under the inside of hollow connecting rod and drill bit it is logical Road enters bottom hole, and the debris generated with bit cutting coal petrography is mixed to form slurries, and negative pressure water pump is by upper deslagging conduit under Deslagging catheter interior provides negative pressure, and the slurries inside bottom hole are extracted upwards by lower dreg discharging conduit lower port, blocks cushion rubber packet It is wrapped on the outside of sealing bearing, not only acts as the effect for fixing two lower dreg discharging conduits, and always with boring deeply drilling, and by hole Bottom forms constant sealing space, to can guarantee that bottom hole has stable negative pressure deslagging power, guarantees that slurries continue upward row Out；(7) after drilling to set depth, brill is moved back, closes drilling machine, water supply pump and negative pressure water pump；(8) step (5)-(7) are repeated, bore operation is carried out to next boring point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811332263.7A CN109209283A (en) | 2018-11-09 | 2018-11-09 | It is lower to drilling with boring plugging type slag-draining device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811332263.7A CN109209283A (en) | 2018-11-09 | 2018-11-09 | It is lower to drilling with boring plugging type slag-draining device and method |
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| Publication Number | Publication Date |
|---|---|
| CN109209283A true CN109209283A (en) | 2019-01-15 |
Family
ID=64995015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811332263.7A Pending CN109209283A (en) | 2018-11-09 | 2018-11-09 | It is lower to drilling with boring plugging type slag-draining device and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109209283A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593881A (en) * | 2020-11-30 | 2021-04-02 | 中国地质大学（北京） | Multifunctional shale geological exploration drill bit and working method thereof |
| CN113059705A (en) * | 2021-03-23 | 2021-07-02 | 上海建工一建集团有限公司 | Concrete cutting system for core area of end of structural beam column and control method |
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| US4354559A (en) * | 1980-07-30 | 1982-10-19 | Tri-State Oil Tool Industries, Inc. | Enlarged borehole drilling method and apparatus |
| CN202706945U (en) * | 2012-06-11 | 2013-01-30 | 煤炭科学研究总院沈阳研究院 | Spiral auxiliary slagging high pressure drill rod for hydrodynamic measures |
| CN203175461U (en) * | 2012-12-30 | 2013-09-04 | 沈阳北方重矿机械有限公司 | Novel in-hole deslagging and plugging device |
| CN103556944A (en) * | 2013-11-13 | 2014-02-05 | 河南理工大学 | Double-layer internal deslagging and anti-blocking drilling tool for soft and outburst coal seam drilling, and use method of drilling tool |
| CN105781419A (en) * | 2016-04-28 | 2016-07-20 | 重庆大学 | Injection type suction drilling tool for cutting removal of drilling center of weak formation and using method of drilling tool |
| CN205422527U (en) * | 2016-03-14 | 2016-08-03 | 中国矿业大学(北京) | A many power supplies combination drilling tool for soft coal creeps into on layer |
| CN106869798A (en) * | 2017-03-30 | 2017-06-20 | 河南理工大学 | The drilling guard aperture method of weak seam mash gas pumping drilling guard aperture drilling tool |
| CN108086930A (en) * | 2018-01-29 | 2018-05-29 | 吉林大学 | Soft rock stratum reacting cycle casing drilling tool and drilling process |
| CN209011790U (en) * | 2018-11-09 | 2019-06-21 | 河南理工大学 | It is lower to drilling with bore plugging type slag-draining device |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4354559A (en) * | 1980-07-30 | 1982-10-19 | Tri-State Oil Tool Industries, Inc. | Enlarged borehole drilling method and apparatus |
| CN202706945U (en) * | 2012-06-11 | 2013-01-30 | 煤炭科学研究总院沈阳研究院 | Spiral auxiliary slagging high pressure drill rod for hydrodynamic measures |
| CN203175461U (en) * | 2012-12-30 | 2013-09-04 | 沈阳北方重矿机械有限公司 | Novel in-hole deslagging and plugging device |
| CN103556944A (en) * | 2013-11-13 | 2014-02-05 | 河南理工大学 | Double-layer internal deslagging and anti-blocking drilling tool for soft and outburst coal seam drilling, and use method of drilling tool |
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| CN105781419A (en) * | 2016-04-28 | 2016-07-20 | 重庆大学 | Injection type suction drilling tool for cutting removal of drilling center of weak formation and using method of drilling tool |
| CN106869798A (en) * | 2017-03-30 | 2017-06-20 | 河南理工大学 | The drilling guard aperture method of weak seam mash gas pumping drilling guard aperture drilling tool |
| CN108086930A (en) * | 2018-01-29 | 2018-05-29 | 吉林大学 | Soft rock stratum reacting cycle casing drilling tool and drilling process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593881A (en) * | 2020-11-30 | 2021-04-02 | 中国地质大学（北京） | Multifunctional shale geological exploration drill bit and working method thereof |
| CN113059705A (en) * | 2021-03-23 | 2021-07-02 | 上海建工一建集团有限公司 | Concrete cutting system for core area of end of structural beam column and control method |
| CN113059705B (en) * | 2021-03-23 | 2023-03-03 | 上海建工一建集团有限公司 | Concrete cutting system for core area of end of structural beam column and control method |
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