CN106639877A - Track varying drilling method and device - Google Patents
Track varying drilling method and device Download PDFInfo
- Publication number
- CN106639877A CN106639877A CN201611268942.3A CN201611268942A CN106639877A CN 106639877 A CN106639877 A CN 106639877A CN 201611268942 A CN201611268942 A CN 201611268942A CN 106639877 A CN106639877 A CN 106639877A
- Authority
- CN
- China
- Prior art keywords
- drilling
- pipe
- change
- rail
- anchor cable
- 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 149
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000003245 coal Substances 0.000 claims abstract description 22
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000605 extraction Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005070 sampling 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a track varying drilling method and device. Firstly drilling is conducted on a coal bed, then a track varying drilling pipe is inserted into a main drill hole, the front part of the track varying drilling pipe is provided with a tilting guide mechanism, an anchor cable drill of which a drill rod is capable of crooking is arranged in the track varying drilling pipe in a sleeved mode, and tilting drilling is conducted on the side wall of the main drill hole according to the various depths degree to which the track varying drilling pipe penetrates into the main drill hole. On the basis of the main drill hole and through a reasonable track varying drilling device, a drill hole area in which the main drill hole is regarded as a center, and a lateral drill hole is regarded as the radius is finally formed, in this way, a coal body can be loosened, the gas can be extracted, thus the extraction quantity of the gas in the drill hole is increased, and the gas extraction effect in the coal bed can be improved.
Description
Technical field
The invention belongs to the modified drilling tool of coal mine gas drainage technical field, and in particular to one kind is by changing drilling tool rail
The mode of mark forms a method and device for drilling.
Background technology
Some seam gas contents are big, the poor air permeability in coal seam, and to gas preventing and control work difficulty is brought, exist coal with watt
This danger for projecting, the safety of dangerous miner.Gas pre-drainage is the important measures of gas preventing and control, but soft coal seam, breathe freely
Property is poor, effect is taken out in advance poor.At present, China is less than 120mm with regard to the exit orifice diametric requirements of projecting coal bed drilling, and bore inner can
To carry out reaming, the outer little interior big structure of drilling advantageously forms one layer of coal wall, if bore inner is because of the big generation of gas pressure
Prominent event, coal wall plays a protective role.
The patent of invention for having various technological means with regard to reaming, such as A of Publication No. CN 101315021 " becomes automatically
Footpath borehole-enlarging drilling tool ", describes a kind of drilling tool of fixed drill bit in combination with detachable bit, and wherein detachable bit includes inside and outside suit
Drilling rod and can with the knife rest of radial expansion, centrifugal force that the technical scheme be produced by detachable bit in rotary course and oneself
It is dynamic to launch, reach extension detachable bit diameter and then reach the purpose of reaming.It is well known that centrifugal force formula F=m × ω2× r,
The centrifugal force size of object is relevant with quality m of object, angular velocity omega and radius of turn r, and drilling tool does not almost have in original drilling
It is unfolded, so radius of turn r is close to zero, quality m of detachable bit is definite value, and no matter how angular velocity omega improves, institute
The centrifugal force of formation is all less, and the detachable bit in drilling is difficult to launch by the centrifugal force of itself.On the other hand, due to
Coal seam internal pressure is larger, and coal seam is higher by the lower hardness of long-term high pressure effect, even if after detachable bit is launched by low-angle, it is limited
Centrifugal force be difficult to provide enough drilling pressure, need to keep original place for a long time that at a high speed rotation can just progressively reach reaming effect
Really, and drilling rod can not be quickly propelled, otherwise detachable bit can shrink automatically, so the program does not have quickly smashes coal hole
Effect, efficiency is very low.
During using drilling tool to coal bed drilling, the injection water under high pressure in drilling rod is needed to suppress expansion to coal seam inside
Hole.The utility model patent " diameter changeable drill bit " of the U of Publication No. CN 202596582 is although be provided with positioning knot to detachable bit
Structure, the complex structure described in the patent document, drill bit internal cannot realize water transport channel, it is difficult to reach preferable reaming effect
Really.And, the location structure is the positioning principle of the similar umbrella of sampling, but locking member can not be completely locked by detachable bit, no
Then need a unlocking action goed deep into inside drill body.So the program can not reach the work(to detachable bit stable position
Energy.
The content of the invention
The present invention is single for the form that drills in existing gas discharge in mine field, causes the not thorough problem of gas drainage under suction,
A kind of change track drilling method and device are provided, a drilling is formed by way of change drilling tool track, take out so as to improve gas
Adopt effect.
The present invention solves the technical scheme of its technical problem：One kind becomes track drilling method, comprises the steps：First
Step, using drilling tool drilling tool is taken out to after the internal drilling of coal seam, forms main borehole of a diameter of D0 depth for L0；Second step, to
Main borehole is inserted into the change rail drilling pipe of a diameter of D1, and D1 ＜ D0 are provided with oriented mechanism in front of the change rail drilling pipe；3rd
Step, becoming the anchor cable brill that drilling rod can bend is set with rail drilling pipe, the anchor cable that can be bent is drilled into and is setting foremost less
The drill bit that can be swung is equipped with, and drilling trace can be changed along the oriented mechanism；4th step, according to change rail drilling pipe depth
Enter depth L in main borehole1、L2、……、Ln-1、L n, n is the natural number more than or equal to 1, L1＜ L2＜ ... ＜ Ln-1＜
L0；It is respectively started the anchor cable driller to make, inclined drill is carried out further according to different depth to main borehole side wall；In arbitrary drilling
During operation, carry out inclined drill and formed after a drilling, pulling out anchor cable brill makes the drill bit that anchor cable is bored be hidden in change rail drilling pipe,
Next bore operation is carried out again, ultimately forms multilayer drilling.The quantity of per layer drilling is 3～4, adjacent drilling
Interlamellar spacing is 0.5～2m.
One kind becomes track drilling apparatus, including drilling tool, and drilling tool includes that becoming rail drilling pipe and anchor cable bores, before the change rail drilling pipe
Side is provided with oriented mechanism, and, loaded on becoming in rail drilling pipe, the drilling rod that the anchor cable is bored is at least foremost for the anchor cable drill bushing
The drill bit for swinging is provided with, and the drill bit that can be swung can change drilling trace along the oriented mechanism.
The oriented mechanism is that the side foremost for becoming rail drilling pipe is provided with inclination side port, inclines side port center line
There is angle α with the axial line for becoming rail drilling pipe.It is 25 °～60 ° in the range of the angle α.
The oriented mechanism is to be fixed with leading truck foremost in change rail drilling pipe, and leading truck is led including an inclination
To plate, there is angle β in the oriented plate with the axial line for becoming rail drilling pipe.The inclination angle of the oriented plate can be adjusted.Institute
State in the range of angle β is 25 °～60 °.
The drilling rod that the anchor cable is bored is that have multistage short drill pipe to link together by universal joint.Drill bit and foremost
Short drill pipe is fixedly connected.Or, the drilling rod that the anchor cable is bored is made up of rigid hose.
The drilling rod that the anchor cable is bored is made up of rigid hose.Bullet is connected between oriented plate and change rail drilling pipe end
Spring；Spring is sleeved on guide post, and guide post being capable of telescopic slide with change rail drilling pipe.
Beneficial effect：The present invention is drilled again, finally on the basis of main borehole further through the rational track arrangement that becomes
Formed centered on main borehole, sidetracking hole is the drilling region of radius, can loosen coal body, and drainage gas increases drilling Neva
This extraction amount, so as to improve coal seam in gas pumping effect.
The present invention by arranging guiding mechanism to becoming rail drilling pipe front end, the anchor pole that utilization can be turned to bore with become rail drilling pipe and
Guiding mechanism coordinates, and realizes that guide digging works.Become rail drilling pipe can guide anchor pole be drilled in main borehole different depth stop and
It is oriented to, forms many drilling that multilayer has divergent shape, each drilling converges at main borehole, forms large-scale bore area
Domain.The present invention can significantly improve gas pumping effect, be especially suitable for promotion and implementation.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is that the first becomes track drilling apparatus generalized section
Fig. 3 is second change track drilling apparatus generalized section
Fig. 4 is that drilling schematic diagram is formed after operation
In figure, to become rail drilling pipe, 2 is drilling pipe end to label 1, and 3 to incline side port, and 4 is oriented plate, and 5 is guide post,
6 is compression spring, and 7 are anchor cable brill, and 8 is drill bit, and 9 is universal joint, and 10 is main borehole, and 11 are a drilling.
Specific embodiment
Embodiment 1：One kind becomes track drilling method, comprises the steps：The first step, diameter is pierced with drilling tool into coal seam
For the 100m deep holes of 113mm, drilling tool is taken out, form main borehole 10.Second step, is inserted into a diameter of 89mm's to the main borehole 10
Become rail drilling pipe 1, the front of the change rail drilling pipe 1 is provided with inclination side port 3, inclines the center line of side port 3 and the axle center for becoming rail drilling pipe 1
There is angle α in line, angle α takes 45 °.3rd step, becoming the anchor cable brill 7 that can be bent is set with rail drilling pipe 1, the anchor cable is bored
7 be provided with foremost swing drill bits and drilling trace can be changed along the oriented mechanism；4th step, according to change
Rail drilling pipe 1 gos deep into the different depth of main borehole 10, is respectively started the anchor cable and bores 7 work, and the side wall of main borehole 10 is inclined again
Inclined borehole, forms a drilling 11.The long 0.5m of side drilling, is distributed around main borehole 10, in same plane, symmetrical three sides
Drilling, interplanar spacing 0.5m.Ultimately form centered on main borehole 10, sidetracking hole is the drilling region of radius, can loosen coal
Body, drainage gas increases gas pumping amount in drilling, so as to improve coal seam in gas pumping effect.
In arbitrary 11 operation of drilling, carry out inclined drill and formed after a drilling 11, pulling out anchor cable brill 7 makes anchor cable
The drill bit for boring 7 is hidden in change rail drilling pipe 1, then carries out next 11 operations of drilling, ultimately forms multilayer drilling 11.
Embodiment 2：One kind becomes track drilling apparatus, referring to Fig. 1 and Fig. 2, including becomes rail drilling pipe 1 and anchor cable brill 7, becomes rail and bores
The front of pipe 1 is provided with oriented mechanism, and the anchor cable bores 7 and is set in change rail drilling pipe 1.It is have many that anchor cable bores 7 drilling rod
Section short drill pipe is linked together by universal joint, and anchor cable bores the drill bit that 7 drilling rod is provided with swinging, and the brill that can be swung
Head can change drilling trace along the oriented mechanism.
Oriented mechanism is that the side foremost for becoming rail drilling pipe 1 is provided with inclination side port 3, inclines the center line of side port 3
There is angle α with the axial line for becoming rail drilling pipe 1.It is 25 °～60 ° in the range of angle α.
Embodiment 3：By the drilling rod that anchor cable bores 7 it is made up of rigid hose on the basis of embodiment 2.
Embodiment 4：Oriented mechanism makes a change.Oriented mechanism is to become being fixed with foremost for rail drilling pipe 1
Leading truck, leading truck includes an oriented plate 4, and the oriented plate 4 has angle β with the axial line for becoming rail drilling pipe 1.
Embodiment 5：On the basis of embodiment 2, oriented mechanism makes a change.Oriented mechanism is to become rail drilling pipe
1 is fixed with foremost leading truck, and leading truck includes an oriented plate 4, the oriented plate 4 and the axle for becoming rail drilling pipe 1
There is angle β in heart line.
The inclination angle of the oriented plate 4 can be adjusted.The drilling rod of anchor cable brill 7 is in the brill for being provided with swinging foremost
Head, and the drill bit that can be swung can change drilling trace along the oriented mechanism.
Referring to Fig. 3, between oriented plate 4 and the end of change rail drilling pipe 1 compression spring 6 is connected with；Compression spring 6 is sleeved on
On guide post 5, guide post 5 being capable of telescopic slide with change rail drilling pipe 1.
Claims (10)
1. it is a kind of to become track drilling method, it is characterised in that to comprise the steps：
The first step, using drilling tool drilling tool is taken out to after the internal drilling of coal seam, forms main borehole of a diameter of D0 depth for L0；
Second step, to main borehole the change rail drilling pipe of a diameter of D1 is inserted into, and D1 ＜ D0 are provided with inclination in front of the change rail drilling pipe
Guiding mechanism；
3rd step, becoming the anchor cable brill that drilling rod can bend is set with rail drilling pipe, the anchor cable that can be bent is drilled into few existing
The drill bit for swinging is provided with foremost, and can change drilling trace along the oriented mechanism；
4th step, according to depth L that change rail drilling pipe gos deep into main borehole1、L2、……、Ln-1、L n, n is oneself more than or equal to 1
So count, L1＜ L2＜ ... ＜ Ln-1＜ L0；It is respectively started the anchor cable driller to make, main borehole side wall is entered further according to different depth
Line tilt drills；In arbitrary bore operation, carry out inclined drill and formed after a drilling, pulling out anchor cable brill bores anchor cable
Drill bit be hidden in change rail drilling pipe, then carry out next bore operation, ultimately form multilayer drilling.
2. change track according to claim 1 drilling method, it is characterised in that the quantity of per layer drilling is 3～4,
Adjacent drilling interlamellar spacing is 0.5～2m.
3. it is a kind of to become track drilling apparatus, including drilling tool, it is characterised in that drilling tool includes that becoming rail drilling pipe and anchor cable bores, the change
Oriented mechanism is provided with front of rail drilling pipe, loaded on becoming in rail drilling pipe, the drilling rod that the anchor cable is bored is extremely for the anchor cable drill bushing
Less in the drill bit for being provided with swinging foremost, and the drill bit that can be swung can change drilling along the oriented mechanism
Track.
4. change track according to claim 3 drilling apparatus, it is characterised in that the oriented mechanism is bored becoming rail
The side foremost of pipe is provided with inclination side port, inclines side port center line with the axial line for becoming rail drilling pipe and there is angle α.
5. change track according to claim 3 drilling apparatus, it is characterised in that the oriented mechanism is bored becoming rail
Pipe is fixed with foremost leading truck, and leading truck includes an oriented plate, the oriented plate and the axle center for becoming rail drilling pipe
There is angle β in line.
6. change track according to claim 5 drilling apparatus, it is characterised in that the inclination angle of the oriented plate can adjust
Section.
7. change track drilling apparatus according to claim 4 or 5, it is characterised in that be 25 ° in the range of the angle α
～60 °, be 25 °～60 ° in the range of angle β.
8. change track according to claim 3 drilling apparatus, it is characterised in that the drilling rod that the anchor cable is bored is that have multistage short
Drilling rod is linked together by universal joint.
9. change track according to claim 3 drilling apparatus, it is characterised in that the drilling rod that the anchor cable is bored is that have rigidity soft
Pipe is constituted.
10. change track according to claim 5 drilling apparatus, it is characterised in that oriented plate with become rail drilling pipe end
Between be connected with spring；Spring is sleeved on guide post, and guide post being capable of telescopic slide with change rail drilling pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268942.3A CN106639877B (en) | 2016-12-31 | 2016-12-31 | Variable-track drilling method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268942.3A CN106639877B (en) | 2016-12-31 | 2016-12-31 | Variable-track drilling method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106639877A true CN106639877A (en) | 2017-05-10 |
| CN106639877B CN106639877B (en) | 2019-12-20 |
Family
ID=58838073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611268942.3A Expired - Fee Related CN106639877B (en) | 2016-12-31 | 2016-12-31 | Variable-track drilling method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106639877B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270586A (en) * | 2017-06-29 | 2017-10-20 | 依科瑞德（北京）能源科技有限公司 | Ground buried pipe of ground source heat pump pipe laying structure |
| CN108555891A (en) * | 2018-07-09 | 2018-09-21 | 杨程飞扬 | A kind of mine working machine people |
| CN110700867A (en) * | 2019-10-30 | 2020-01-17 | 神华神东煤炭集团有限责任公司 | Roof support method |
| CN111677450A (en) * | 2020-05-22 | 2020-09-18 | 中煤科工集团西安研究院有限公司 | Device and method for drilling branch hole of underground directional drilling of coal mine |
| CN112176995A (en) * | 2020-09-27 | 2021-01-05 | 中冶天工集团有限公司 | Arc-shaped anchor rod construction method |
| CN113062692A (en) * | 2021-03-15 | 2021-07-02 | 中煤科工集团西安研究院有限公司 | Short-distance multi-branch sidetrack drilling tool and drilling method for coal mine underground directional hole |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270586A (en) * | 2017-06-29 | 2017-10-20 | 依科瑞德（北京）能源科技有限公司 | Ground buried pipe of ground source heat pump pipe laying structure |
| CN108555891A (en) * | 2018-07-09 | 2018-09-21 | 杨程飞扬 | A kind of mine working machine people |
| CN108555891B (en) * | 2018-07-09 | 2021-12-31 | 玉环市梓鑫机械有限公司 | Underground excavation robot |
| CN110700867A (en) * | 2019-10-30 | 2020-01-17 | 神华神东煤炭集团有限责任公司 | Roof support method |
| CN111677450A (en) * | 2020-05-22 | 2020-09-18 | 中煤科工集团西安研究院有限公司 | Device and method for drilling branch hole of underground directional drilling of coal mine |
| CN111677450B (en) * | 2020-05-22 | 2022-03-15 | 中煤科工集团西安研究院有限公司 | Device and method for drilling branch hole of underground directional drilling of coal mine |
| CN112176995A (en) * | 2020-09-27 | 2021-01-05 | 中冶天工集团有限公司 | Arc-shaped anchor rod construction method |
| CN113062692A (en) * | 2021-03-15 | 2021-07-02 | 中煤科工集团西安研究院有限公司 | Short-distance multi-branch sidetrack drilling tool and drilling method for coal mine underground directional hole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106639877B (en) | 2019-12-20 |
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