CN106869807A - A kind of apparatus and method for improving coal bed drilling hole wall slickness - Google Patents
A kind of apparatus and method for improving coal bed drilling hole wall slickness Download PDFInfo
- Publication number
- CN106869807A CN106869807A CN201710153502.1A CN201710153502A CN106869807A CN 106869807 A CN106869807 A CN 106869807A CN 201710153502 A CN201710153502 A CN 201710153502A CN 106869807 A CN106869807 A CN 106869807A
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- Prior art keywords
- hole wall
- drilling
- rubber sleeve
- pipe
- steel
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B12/00—Accessories for drilling tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
Abstract
The present invention relates to a kind of apparatus and method for improving coal bed drilling hole wall slickness, can be while abrasion drilling surrounding medium protruding parts, the rough surface of coal bed drilling is become smooth surface by the cinder that exclusion is worn and torn；If hole packer is placed on into the position, necessarily with good sealing property, and the effect of the accuracy, gas extraction concentration and coal-bed flooding of determination of coal seam gas pressure data is finally improved.
Description
Technical field
The present invention relates to a kind of device for improving coal bed drilling Hole Wall Roughness, coal bed drilling is improved especially with regard to one kind
The apparatus and method of hole wall slickness.
Background technology
In underground coal mine, the work such as determination of coal seam gas pressure, gas pumping and coal-bed flooding is required to sealing drilling, envelope
Hole device is a kind of conventional borehole sealing device, and its sealing property is the key of above-mentioned work success or failure.
Hole packer is typically made up of 1 layer of steel wire or multilayer, inwall rubber and outer surface rubber；Noted by hole packer
Enter high pressure inflation fluid, hole packer expansion, the rubber of its outer surface is contacted with borehole wall, hinders fluid（Including gas and liquid）
Infiltration, realizes sealing function.
During drilling construction, because the rocking of drilling rod, ature of coal are soft and the drilling medium reason of ambient stress collection, coal seam
Drilling wall it is often relatively rough, this will influence hole packer to drill sealing effectiveness.
On disclosed data document, about drilling construction research be concentrated mainly on raising drill depth, prevention drilling
Collapse hole and the drilling aspect such as cinder is effectively excluded, and on how to improve the research of borehole wall slickness, rare report.
Therefore, in order to further improve the sealing property of hole packer, coal-bed gas are more accurately determined using hole packer
Pressure, extraction go out the gas of higher concentration and obtain more preferable coal seam infusion effect, it is necessary to the smooth drilling of hole wall of constructing out；
Explore a kind of apparatus and method that can improve coal bed drilling hole wall slickness and just seem particularly urgent.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of device that can improve coal bed drilling hole wall slickness
With method.
Solving the technical scheme of above-mentioned technical problem is：A kind of device for improving coal bed drilling hole wall slickness, including bore
Machine, drilling rod, breather pipe, sanding apparatus, gas flow converter, pressure wind apparatus and power supply；The power supply is powered for rig, presses wind
Device provides gases at high pressure for breather pipe；The drilling rod is arranged on rig, and front end and the sanding apparatus of drilling rod are tightly connected；Institute
State the rubber sleeve that sanding apparatus include, and the steel sand outside rubber sleeve；The breather pipe is successively axially across rig, brill
Bar and sanding apparatus, its rear end connect pressure wind apparatus by pressure ventilation pipe, and front end is stretched out from the front end of sanding apparatus, and it is located at polishing
Position in device is provided with gas flow converter；When using, rig is powered and rotates, and drilling rod drives sanding apparatus rotation, beats
Pressure wind apparatus are opened, air-flow enters breather pipe, under the regulation of gas flow converter, air-flow produces two kinds of flow directions, Yi Zhongwei, gas
Stream fully enters and make in rubber sleeve its expansion and be adjacent to hole wall to hole wall rotary-grinding；Another kind is that air-flow sprays from breather pipe front end
Enter foot of hole, rubber sleeve shrinks, flow into the gas of foot of hole by the cinder for wearing and tearing between rubber sleeve and borehole wall
Gap carries away, by outside cinder tap；Two kinds of situations alternately, slickness operation are implemented to borehole wall.
The gas flow converter includes reducing steel tube and normal footpath steel pipe, and normal footpath penstock installation is the two of reducing steel tube
Side, the internal diameter of the internal diameter more than normal footpath steel pipe of reducing steel tube；Normal footpath steel pipe is identical with the internal diameter of breather pipe, and its two ends respectively with
Breather pipe is connected；Fixed support is distinguished in the normal footpath steel pipe of reducing steel tube both sides, spring, the bullet are connected between support
Piston is connected with the middle part of spring, is defined by air current flow direction, set out on the normal footpath steel pipe tube wall at reducing steel tube rear
Stomata；The piston is moved back and forth in the normal footpath steel pipe and reducing steel tube between venthole and reducing steel tube, realizes air-flow
The conversion between entering rubber sleeve and entering two kinds of situations of drilling.
The rubber sleeve is cylinder, and two-port is shunk, and by end face seal；The center of both ends of the surface is equipped with can be made to lead to
The through hole that tracheae is passed through, the outer rim of both ends of the surface radially sets gradually annular coupler and cylindric termination from inside to outside, described
The two ends of rubber sleeve are wrapped in the outside of termination and by clip fit sealing, wherein the distal end of a termination is provided with internal thread, with
Drill rod thread is connected；The drilling rod is twist drill rods.
Steel sand has been sprayed on the surface of the rubber sleeve, and is firmly bonded with binding agent.
The drilling rod is provided with external screw thread by connector and motor connection, one end of drilling rod, and the other end is provided with mounting hole, peace
The hole wall for filling hole is provided with pin-and-hole, is fixed with connector grafting and with pin by mounting hole.
The breather pipe by the steel pipe in rubber sleeve, be arranged on the axial passage and and rig at drilling rod center
The hollow connector of connection is formed by connecting by sealed bearings connector head and the tail, can prevent the high pressure gas leakage of input.
The rig for it provides electric power, and connects pressure wind apparatus, pressure by cable connection power supply by pressure ventilation pipe
Switch is set on airduct.
A kind of method for improving coal bed drilling hole wall slickness, concretely comprises the following steps：Conventional method construction coal is used first
Drilling；Equipment of drilling is exited, drilling is sent into the front end that will improve the device of coal bed drilling hole wall slickness, until where rubber sleeve
Position reaches the position for needing to improve hole wall slickness；The electric current of cable, rig rotation are connected, and whole dress is driven by drilling rod
Put rotation；Starting switch, gases at high pressure enter breather pipe, and piston is back and forth migrated in reducing steel tube and normal footpath steel pipe periodically,
When piston is located in the normal footpath steel pipe between venthole and reducing steel tube, gases at high pressure enter rubber sleeve, and rubber sleeve expands simultaneously
It is in close contact with hole wall, by rotation, its outside steel sand abrasion hole wall protrudes coal body；When piston is moved in reducing steel tube
When, air-flow enters drilling front end by breather pipe, and rubber sleeve shrinks, and air-flow carries the cinder of abrasion from rubber sleeve and drill hole inner wall
Gap gush out.
The beneficial effects of the invention are as follows：The invention provides a kind of dress dedicated for improving coal bed drilling hole wall slickness
Put and method, can be while abrasion drilling surrounding medium protruding parts, the cinder that exclusion is worn and torn is recessed by coal bed drilling
Convex uneven surface becomes smooth surface；If hole packer is placed on into the position, necessarily with good sealing property, and most
The effect of the accuracy, gas extraction concentration and coal-bed flooding of determination of coal seam gas pressure data is improved eventually.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of gas flow converter.
Fig. 3 is the sectional view of support.
Marked in figure as follows：1. rig, 2. drilling rod, 3. breather pipe, 4. sanding apparatus, 4-1. rubber sleeves, 4-2. steel sands,
Terminal adapter before 4-3., 4-4. backend connectors, the preposition terminations of 4-5., the rearmounted terminations of 4-6., 5. gas flow converter, 5-1.
After-poppet, 5-2. rear springs, 5-3. ventholes, 5-4. pistons, 5-5. reducing steel tubes, the preposition springs of 5-6., 5-7. fore-stocks,
The normal footpath steel pipes of 5-8., 6. pressure ventilation pipe, 7. switchs, 8. cable, 9. clip, 10. sealed bearings connector, 11. connectors, 12. peaces
Dress hole, 13. pins.
Specific embodiment
As illustrated in the accompanying drawings from 1 to 3, a kind of device for improving coal bed drilling hole wall slickness, including rig 1, drilling rod 2, breather pipe
3rd, sanding apparatus 4, gas flow converter 5, pressure wind apparatus and power supply；The power supply is powered for rig 1, and pressure wind apparatus are ventilation
Pipe 3 provides gases at high pressure；The drilling rod 2 is arranged on rig 1, and front end and the sanding apparatus 4 of drilling rod 1 are tightly connected；It is described to beat
The rubber sleeve 4-1 that mill apparatus 4 include, and the steel sand 4-2 outside rubber sleeve 4-1；The breather pipe 3 successively axially across
Rig 1, drilling rod 2 and sanding apparatus 4, its rear end connect pressure wind apparatus by pressure ventilation pipe 6, and front end is stretched from the front end of sanding apparatus 4
Go out, its position being located in sanding apparatus 4 is provided with gas flow converter 5；When using, rig 1 is powered and rotates, the band of drilling rod 2
Dynamic sanding apparatus 4 are rotated, and open pressure wind apparatus, and air-flow enters breather pipe 3, and under the regulation of gas flow converter 5, air-flow is produced
Raw two kinds of flow directions, Yi Zhongwei, air-flow is fully entered makes its expansion be adjacent to hole wall to hole wall rotary-grinding in rubber sleeve 4-1；It is another
Plant and be, air-flow sprays into foot of hole from the front end of breather pipe 3, rubber sleeve 4-1 shrinks, flow into the coal that the gas of foot of hole will wear and tear
Slag is carried away from the gap between rubber sleeve 4-1 and borehole wall, by outside cinder tap；Two kinds of situations are alternately, right
Borehole wall implements slickness operation.
The gas flow converter 5 includes that reducing steel tube 5-5 and normal footpath steel pipe 5-8, normal footpath steel pipe 5-8 are arranged on reducing
The both sides of steel pipe 5-5, the internal diameter of the internal diameter more than normal footpath steel pipe 8 of reducing steel tube 5-5；The internal diameter of normal footpath steel pipe 5-8 and breather pipe 3
It is identical, and its two ends is connected with breather pipe 3 respectively；Fixed branch is distinguished in the normal footpath steel pipe 5-8 of reducing steel tube 5-5 both sides
Frame, is connected with spring between support, piston 5-4 is connected with the middle part of the spring, is defined by air current flow direction, positioned at reducing
Venthole 5-3 is set on the normal footpath steel pipe 5-8 tube walls at steel pipe 5-5 rears；The piston 5-4 is in venthole 5-3 and reducing steel tube
Moved back and forth in normal footpath steel pipe 5-8 and reducing steel tube 5-5 between 5-5, realize that air-flow is entering rubber sleeve 4-1 and entering brill
Changed between the situation of two kinds of hole.
The gas flow converter 5, by after-poppet 5-1, rear spring 5-2, venthole 5-3, piston 5-4, reducing steel
Pipe 5-5, preposition spring 5-6, fore-stock 5-7 and normal footpath steel pipe 5-8 composition；After-poppet 5-1 and rear spring 5-2 is arranged on reducing
In the normal footpath steel pipe 5-8 at steel pipe 5-5 rear portions, preposition spring 5-6 and fore-stock 5-7 is arranged on the anterior Chang Jing of reducing steel tube 5-5
In steel pipe 5-8, venthole 5-3 is arranged on the normal footpath steel pipe 5-8 tube walls at reducing steel tube 5-5 rear portions, under original state, piston 5-
4 block venthole 5-3.After ventilation, when gas pressure is relatively low, piston 5-4 is displaced slightly forwards, and air-flow is from venthole 5-3
Into in the rubber sleeve 4-1 of sealing, rubber sleeve 4 receives compression swelling；When gas pressure is higher, piston 5-4 is significantly moved forward,
Into reducing steel tube 5-5, due to the diameter with diameter greater than piston 5-4 of reducing steel tube 5-5, air-flow can be from gap between the two
Foot of hole is flowed to, one side gas pressure can reduce, rubber sleeve 4-1 shrinks, diameter reduces, on the other hand, flow into drilling bottom
The cinder that gap of the gas at end between rubber sleeve 4-1 and drilling rib carries abrasion is flowed to outside hole, with exclusion abrasion coal
The function of slag.After the piston 5-4 reaches reducing steel tube 5-5 under gases at high pressure effect, under effect of inertia, may proceed to omit
Micro- reach；But, because gas pressure reduces, under the synergy of rear spring 5-2 and preposition spring 5-6, will necessarily be to
After move, and across the reducer of reducing steel tube 5-5, allow high pressure draught to enter confined space by venthole 5-3 completely again,
Rubber sleeve 4-1 is re-inflated, into next cycle.
The rubber sleeve 4-1 is cylinder, and two-port is shunk, and by end face seal；The center of both ends of the surface is equipped with can
The through hole for passing through breather pipe 3, the outer rim of both ends of the surface radially sets gradually annular coupler and cylindric termination from inside to outside,
The two ends of the rubber sleeve 4-1 are wrapped in the outside of termination and by the fit sealing of clip 9, wherein the distal end of a termination is provided with interior
Screw thread, is threadedly coupled with drilling rod 2；The drilling rod 2 is twist drill rods.
Steel sand 4-2 has been sprayed on the surface of the rubber sleeve 4-1, and is firmly bonded with binding agent；When rig 17 passes through fried dough twist
When drilling rod 13 drives its rotation, steel sand 4-2 interacts with the protruding parts of drilling rib, is worn and torn；When rising gas pressure
Power, increases the diameter of rubber sleeve 4, you can increase the wear range of the protruding parts of drilling rib, so that it is smooth to obtain hole wall
Coal bed drilling.
The drilling rod 2 passes through connector 11 and motor connection.One end of drilling rod 2 is provided with external screw thread, and the other end is provided with installation
Hole 12, the hole wall of mounting hole 12 is provided with pin-and-hole, is fixed with the grafting of connector 11 and with pin 13 by mounting hole 12.
The breather pipe 3 by the steel pipe in rubber sleeve 4-1, be arranged on the center of drilling rod 2 axial passage and
The hollow connector 11 being connected with rig 1 is formed by connecting by the head and the tail of sealed bearings connector 10, can prevent the high pressure gas of input
Body is leaked.
The termination is divided into preposition termination 4-5 and rearmounted termination 4-6, and both are external diameter 50mm, the steel pipe of internal diameter 46mm,
The preposition a length of 100mm of termination 4-5, rearmounted termination 4-6 200mm long；The making material of clip 9 is stainless steel, model KS-K；Connection
The material of device 11 is connect for stainless steel, external diameter 46mm, internal diameter 16mm, thick 10mm.
The connector is divided into preceding terminal adapter 4-3 and backend connector 4-4, is stainless steel annulus, external diameter 46mm, interior
Footpath 16mm, thick 10mm.
The rig 1 connects power supply by cable 8, for it provides electric power, and connects pressure wind dress by pressure ventilation pipe 6
Put, switch 7 is set on pressure ventilation pipe 6；While drilling rod 2 is driven and miscellaneous part rotates, gas, the pressure and stream of gas are input into
Speed can be adjusted by switch 7.
The connector 11 and twist drill rods 2 are coupled by pin 13 using pin；The front end of connector 11 and fluted drill
The rear end inner tube of bar 2 is coupled using sealed bearings connector 10, and connecting mode is conical surface encryption seal combination connection.
The rig 1 is coupled with connector 11 using bearing；Cable 8 and rig 1 couples using electric welding, pressure ventilation pipe 6 and brill
Machine 1 uses thread connection, and switch 7 uses thread connection with pressure ventilation pipe 6.
The after-poppet 5-1 and fore-stock 5-7 are connected and fixed in the inner chamber of breather pipe 3 by electric welding；After-poppet 5-1 and
Piston 5-4 is coupled using rear spring 5-2, and connecting mode couples for electric welding；Fore-stock 5-7 and piston 5-4 uses preposition spring
5-6 couples, and connecting mode couples for electric welding；The internal diameter of reducing steel tube 5-5 is bigger than breather pipe 3, section specification and the ventilation at two ends
Pipe 3 is identical, and venthole 5-3 is dug on the tube wall of breather pipe 3.
Concrete technology method is as follows：First using the drilling of conventional method construction coal；Equipment of drilling is exited, the present apparatus is sent
Enter drilling, until position reaches the position for needing to improve hole wall slickness where rubber sleeve 4-1；Connect the electric current of cable 8, rig
1 rotation, and drive whole device to rotate by twist drill rods 2；Starting switch 7, gases at high pressure enter breather pipe 3, and piston 5-4 exists
Reducing steel tube 5-5 and normal footpath steel pipe 5-8 periodically are back and forth migrated, when piston 5-4 is located at venthole 5-3 and reducing steel tube 5-5
Between normal footpath steel pipe 5-8 in when, gases at high pressure enter rubber sleeve 4-1, rubber sleeve 4-1 expansion simultaneously with hole wall be in close contact, lead to
Rotation is crossed, its outside steel sand 4-2 abrasion hole wall protrudes coal body；When piston 5-4 is moved in reducing steel tube 5-5, air-flow
Drilling front end is entered by breather pipe 3, rubber sleeve 4-1 shrinks, air-flow carries the cinder of abrasion from rubber sleeve 4-1 and drill hole inner wall
Gap gush out.
One embodiment of the present of invention is as follows：
The termination is divided into preposition termination 4-5 and rearmounted termination 4-6, and both are external diameter 50mm, and the steel pipe of internal diameter 46mm is preposition
Termination 4-5 a length of 100mm, rearmounted termination 4-6 200mm long；The making material of clip 9 is stainless steel, model KS-K；Connector
11 material is stainless steel, external diameter 46mm, internal diameter 16mm, thick 10mm.
The making material of the rubber sleeve 4-1 is rubber, external diameter 70mm, internal diameter 64mm, 800mm long；The making of steel sand 4-2
Material is carborundum, particle diameter 0.1mm；The making material of the lengths of steel pipes of breather pipe 3 is stainless steel, external diameter 16mm, internal diameter 12mm, gas
Direction of flow converter 5 is classified as two sections of length respectively 600mm and 700mm.
The making material of the sealed bearings connector 10 is stainless steel, external diameter 20mm, internal diameter 12mm, 5mm long；The brill
Bar 2 is hollow twist drill rods, 1000mm long, diameter 52mm；A diameter of 4mm of the pin 13,15mm long；The connector 11
Making material is stainless steel, diameter 46mm, 200mm long；The rig 1 is ZM15 moulded coal electric drills；The pressure ventilation pipe 6 is high-pressure glue
Pipe, external diameter 30mm, internal diameter 26mm, 3000mm long；The switch 7 is RQZ series of security stop valves；The model of cable 8
YJV22/ZR-1KV, 3000mm long.
The making material of the after-poppet 5-1 and fore-stock 5-7 is stainless steel, respectively by 3 stainless steel strip welding
Into pyramidal structure, every the diameter 2mm, 6mm long of stainless steel strip；Rear spring 5-2 and preposition spring 5-6 are ball
Spring, spring overall thick 10mm, 200mm long, the steel wire diameter for making spring is 1mm；The aperture of venthole 5-3 is 1mm, piston 5-
4 making material is latex, in cylindrical, diameter 12mm, 40mm long.The external diameter 20mm of reducing steel tube 5-5, internal diameter 16mm,
100mm long.
The course of work of the invention is as follows：
First, in the good steel sand 4-2 of surface spraying of rubber sleeve 4-1, couple, arrange each part of gas flow converter 5：Afterwards
Support 5-1, rear spring 5-2, venthole 5-3, piston 5-4, reducing steel tube 5-5, preposition spring 5-6, fore-stock 5-7 and normal footpath
Steel pipe 5-8, and couple each part by Fig. 1：It is connected and fixed rubber sleeve 4-1 and preposition termination 4-5, rearmounted termination 4- using clip 9
6；Connection gas flow converter 5 and breather pipe 3, and the inner chamber of rubber sleeve 4-1 is placed on, by preceding terminal adapter 4-3 with after
Terminal adapter 4-4 couples, fixes；Connection twist drill rods 2 and rearmounted termination 4-6, and fiber crops are coupled using sealed bearings connector 10
The front end inner tube of flower drilling rod 2 and the rear end of steel pipe；Rear end and connector 11 using the connection twist drill rods 2 of pin 13, using close
Envelope bearing connector 12 couples the rear end inner tube of twist drill rods 2 and the front end of connector 11；Rig 1 and connection are coupled using bearing
Device 11, using electric welding tie cable 8 and rig 1, using thread connection pressure ventilation pipe 6 and rig 1,7 Hes is switched using thread connection
Pressure ventilation pipe 6.
Starting switch 7, determines minimum gas pressures and gas with various pressure of the piston 5-4 completely into reducing steel tube 5-5
Under the conditions of rubber sleeve 4-1 swell diameter, record data, closing switch 7.
Drilled using conventional method construction coal, after desired depth is reached, exit equipment of drilling；By device of the invention
Feeding drilling, until position reaches the position for needing to improve hole wall slickness where rubber sleeve 4-1.
Starting switch 7, allows rubber sleeve 4-1 to expand and be in close contact with hole wall, connects the electric current of cable 8, and rig 1 rotates,
And driving whole device to rotate by twist drill rods 2, steel sand 4-2 protrudes coal body interaction with hole wall, is worn and torn, and comes off
Get off.
By controlling switch 7, the pressure of appropriate increase air-flow allows piston 5-4 in reducing steel tube 5-5 and normal footpath steel pipe 5-8
Periodically is back and forth migrated, the cinder that the steel sand 4-2 coal bodies that protrude of abrasion hole wall wear and tear with airflow scouring alternately,
Both the coal body that hole wall protrudes had been worn away, can has been carried out in time again.
When the coal bed drilling diameter required for the gas pressure of input can reach the swell diameter of rubber sleeve 4-1,
No longer increase gas pressure, allow device to work at this pressure 1min；A satisfactory smooth the wall of a borehole can just be obtained
Face.
After end-of-job, extracting apparatus；Can also be thick using the hole wall wall of inspection instrument for borehole detection drilling diverse location
Rugosity, effect of the comparative analysis apparatus of the present invention in terms of drilling wall slickness is improved.
Claims (9)
1. it is a kind of improve coal bed drilling hole wall slickness device, it is characterised in that including rig, drilling rod, breather pipe, polishing dress
Put, gas flow converter, pressure wind apparatus and power supply；The power supply is powered for rig, and pressure wind apparatus provide high pressure for breather pipe
Gas；The drilling rod is arranged on rig, and front end and the sanding apparatus of drilling rod are tightly connected；The rubber that the sanding apparatus include
Set, and the steel sand outside rubber sleeve；The breather pipe is successively axially across rig, drilling rod and sanding apparatus, its rear end
Pressure wind apparatus are connected by pressure ventilation pipe, front end is stretched out from the front end of sanding apparatus, and its position being located in sanding apparatus is provided with
Gas flow converter；When using, rig is powered and rotates, and drilling rod drives sanding apparatus rotation, opens pressure wind apparatus, and air-flow enters
Breather pipe, under the regulation of gas flow converter, air-flow produces two kinds of flow directions, and Yi Zhongwei, air-flow is fully entered in rubber sleeve
Its expansion is set to be adjacent to hole wall to hole wall rotary-grinding；Another kind is that air-flow sprays into foot of hole from breather pipe front end, and rubber sleeve is received
Contracting, flows into gap of the gas of foot of hole by the cinder of abrasion between rubber sleeve and borehole wall and carries away, by cinder
Outside tap；Two kinds of situations alternately, slickness operation are implemented to borehole wall.
2. it is according to claim 1 it is a kind of improve coal bed drilling hole wall slickness device, it is characterised in that the gas
Flow switch includes reducing steel tube and normal footpath steel pipe, and normal footpath penstock installation is in the both sides of reducing steel tube, the internal diameter of reducing steel tube
More than the internal diameter of normal footpath steel pipe；Normal footpath steel pipe is identical with the internal diameter of breather pipe, and its two ends is connected with breather pipe respectively；Positioned at change
The fixed support of difference, is connected with spring in the normal footpath steel pipe of footpath steel pipe both sides between support, and work is connected with the middle part of the spring
Plug, is defined by air current flow direction, and venthole is set on the normal footpath steel pipe tube wall at reducing steel tube rear；The piston is going out
Moved back and forth in normal footpath steel pipe and reducing steel tube between stomata and reducing steel tube, realize that air-flow is entering rubber sleeve and entrance
Changed between two kinds of situations of drilling.
3. it is according to claim 2 it is a kind of improve coal bed drilling hole wall slickness device, it is characterised in that the support
Making material be stainless steel, the pyramidal structure being welded by 3 stainless steel strips respectively, the every diameter of stainless steel strip
2mm, 6mm long；The spring is common spring, spring overall thick 10mm, 200mm long, and the steel wire diameter for making spring is
1mm；The aperture of the venthole 5-3 is 1mm；The making material of the piston is latex, and in cylindrical, diameter 12mm is long
40mm；The external diameter 20mm of the reducing steel tube, internal diameter 16mm, 100mm long.
4. it is according to claim 1 it is a kind of improve coal bed drilling hole wall slickness device, it is characterised in that the rubber
It is cylinder to cover, and two-port is shunk, and by end face seal；The center of both ends of the surface is equipped with the through hole that can pass through breather pipe,
The outer rim of both ends of the surface radially sets gradually annular coupler and cylindric termination, the two ends parcel of the rubber sleeve from inside to outside
Termination outside and by clip fit sealing, wherein the distal end of a termination is provided with internal thread, be connected with drill rod thread.
5. it is according to claim 4 it is a kind of improve coal bed drilling hole wall slickness device, it is characterised in that the termination
It is divided into preposition termination and rearmounted termination, both are external diameter 50mm, the steel pipe of internal diameter 46mm, the preposition a length of 100mm in termination is rearmounted
Termination 200mm long；The making material of clip is stainless steel, model KS-K.
6. it is according to claim 4 it is a kind of improve coal bed drilling hole wall slickness device, it is characterised in that the rubber
The making material of set is rubber, external diameter 70mm, internal diameter 64mm, 800mm long；The making material of steel sand is carborundum, particle diameter
0.1mm。
7. it is according to claim 1 it is a kind of improve coal bed drilling hole wall slickness device, it is characterised in that the ventilation
Pipe is by the steel pipe in rubber sleeve, the hollow connector that is arranged on the axial passage at drilling rod center and is connected with rig
It is formed by connecting by sealed bearings connector head and the tail, the high pressure gas leakage of input can be prevented.
8. it is according to claim 7 it is a kind of improve coal bed drilling hole wall slickness device, it is characterised in that the ventilation
The making material of the lengths of steel pipes of pipe is stainless steel, and external diameter 16mm, internal diameter 12mm, gas flow converter are classified as length difference
It is two sections of 600mm and 700mm.
9. carried using a kind of device of the raising coal bed drilling hole wall slickness described in claim 1-8 any one claims
The method of coal bed drilling hole wall slickness high, concretely comprises the following steps：First using the drilling of conventional method construction coal；Exit dress of drilling
Standby, drilling is sent into the front end that will improve the device of coal bed drilling hole wall slickness, until position where rubber sleeve reaches needs changing
The position of kind hole wall slickness；The electric current of cable, rig rotation are connected, and drives whole device to rotate by drilling rod；Startup is opened
Close, gases at high pressure enter breather pipe, and piston is back and forth migrated in reducing steel tube and normal footpath steel pipe periodically, when piston is located at outlet
When in the normal footpath steel pipe between hole and reducing steel tube, gases at high pressure enter rubber sleeve, and rubber sleeve expansion is simultaneously in close contact with hole wall,
By rotation, its outside steel sand abrasion hole wall protrudes coal body；When piston is moved in reducing steel tube, air-flow is by ventilation
Pipe enters drilling front end, and rubber sleeve shrinks, and the cinder that air-flow carries abrasion is gushed out from rubber sleeve with the gap of drill hole inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710153502.1A CN106869807B (en) | 2017-03-15 | 2017-03-15 | A kind of apparatus and method improving coal bed drilling hole wall slickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710153502.1A CN106869807B (en) | 2017-03-15 | 2017-03-15 | A kind of apparatus and method improving coal bed drilling hole wall slickness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106869807A true CN106869807A (en) | 2017-06-20 |
| CN106869807B CN106869807B (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710153502.1A Expired - Fee Related CN106869807B (en) | 2017-03-15 | 2017-03-15 | A kind of apparatus and method improving coal bed drilling hole wall slickness |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109797757A (en) * | 2019-01-16 | 2019-05-24 | 包头市公路工程股份有限公司 | Retaining wall engineering method in the construction of highway engineering Bridge Bored Pile |
| CN112461592A (en) * | 2020-11-05 | 2021-03-09 | 华北科技学院 | Device for collecting various coal powder of coal bed drilling |
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| CN201456149U (en) * | 2009-05-05 | 2010-05-12 | 张华� | Double-edged double-wing and three-tip drill |
| CN102162248A (en) * | 2011-04-26 | 2011-08-24 | 武汉高铁桩工科技有限公司 | Method for forming variable-cross-section compaction thread pile and compaction drilling tool |
| CN204200085U (en) * | 2014-10-10 | 2015-03-11 | 浙江欧隆泵业有限公司 | For the drill bit of hole wall polishing |
| CN206562914U (en) * | 2017-03-15 | 2017-10-17 | 华北科技学院 | A kind of device for improving coal bed drilling hole wall slickness |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2072239A (en) * | 1980-03-26 | 1981-09-30 | Santa Fe Int Corp | Bore hole mining |
| CN1807827A (en) * | 2006-02-09 | 2006-07-26 | 北京发研工程技术有限公司 | Method and apparatus for high precision horizontal drilling on reinforced concrete |
| CN201456149U (en) * | 2009-05-05 | 2010-05-12 | 张华� | Double-edged double-wing and three-tip drill |
| CN102162248A (en) * | 2011-04-26 | 2011-08-24 | 武汉高铁桩工科技有限公司 | Method for forming variable-cross-section compaction thread pile and compaction drilling tool |
| CN204200085U (en) * | 2014-10-10 | 2015-03-11 | 浙江欧隆泵业有限公司 | For the drill bit of hole wall polishing |
| CN206562914U (en) * | 2017-03-15 | 2017-10-17 | 华北科技学院 | A kind of device for improving coal bed drilling hole wall slickness |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109797757A (en) * | 2019-01-16 | 2019-05-24 | 包头市公路工程股份有限公司 | Retaining wall engineering method in the construction of highway engineering Bridge Bored Pile |
| CN112461592A (en) * | 2020-11-05 | 2021-03-09 | 华北科技学院 | Device for collecting various coal powder of coal bed drilling |
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| Publication number | Publication date |
|---|---|
| CN106869807B (en) | 2019-08-09 |
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