CN110219615A - A kind of coal seam pulsed infusion borehole sealing device and method for sealing - Google Patents
A kind of coal seam pulsed infusion borehole sealing device and method for sealing Download PDFInfo
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- CN110219615A CN110219615A CN201910465875.1A CN201910465875A CN110219615A CN 110219615 A CN110219615 A CN 110219615A CN 201910465875 A CN201910465875 A CN 201910465875A CN 110219615 A CN110219615 A CN 110219615A
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- 238000007789 sealing Methods 0.000 title claims abstract description 70
- 238000001802 infusion Methods 0.000 title claims abstract description 43
- 239000003245 coal Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 189
- 239000002775 capsule Substances 0.000 claims abstract description 187
- 238000005553 drilling Methods 0.000 claims abstract description 59
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 239000002245 particle Substances 0.000 claims abstract description 30
- 239000000872 buffer Substances 0.000 claims abstract description 22
- 241000283216 Phocidae Species 0.000 claims description 67
- 239000002184 metal Substances 0.000 claims description 25
- 229920001971 elastomer Polymers 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 8
- 238000007569 slipcasting Methods 0.000 claims description 7
- 230000010349 pulsation Effects 0.000 claims description 5
- 241000283139 Pusa sibirica Species 0.000 claims description 4
- 208000004880 Polyuria Diseases 0.000 claims description 3
- 230000035619 diuresis Effects 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 10
- 239000003566 sealing material Substances 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 12
- 239000000428 dust Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000000565 sealant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 210000002425 internal capsule Anatomy 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003462 vein Anatomy 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention provides a kind of coal seam pulsed infusion borehole sealing device and method for sealing, it is related to pouring water into borehole technical field, sealing device includes Grouting Pipe, aqueduct, check valve, first water filling capsule, second water filling capsule and seal capsule, water injecting drilling is disposed with the first water filling capsule from outside to inside, second water filling capsule and seal capsule, Grouting Pipe is across the first water filling capsule outlet the first water filling capsule and the second water filling capsule, water injection pipe passes through the first water filling capsule and reaches the second water filling capsule, check valve is arranged in Grouting Pipe exit, partial size is evenly arranged in seal capsule by the particle that becomes larger, form gradual buffer layer；Sealing of hole is carried out using the present apparatus, gradually release at the gradual buffer layer of water flow when pulsed infusion, to reduce become hydraulic pressure to sealing material with impact, guarantee the sealing performance of drilling, in addition also having many advantages, such as, which prevents sealing material from fatigue damage occurs because of pulsed infusion pressure, causes borehole sealing to fail.
Description
Technical field
The present invention relates to pouring water into borehole technical field, especially a kind of borehole sealing device of coal seam pulsed infusion, with
And the method using device progress sealing of hole.
Background technique
It in underground coal mine production, adopts, dig, transporting each process and can all generate a large amount of dust, adopting with high-power, dig machinery
Rapid development, Coal Exploitation, dig working face dust concentration significantly increase.The dust of generation can not only pollute working environment,
Damage is generated to various mechanical equipments, while the health of staff can also be damaged.To reduce powder from source
The dust-producing amount of dirt, underground coal mine subtract dirt technology frequently with coal-bed flooding, which passes through construction drill-sealing of hole-note in coal seam
Water mode increases coal moisture content, reduce coal body it is broken when dust ability, be reduce adopt, dig having for working face pollution caused by coal dust
Effect means.Because China's seam mining depth gradually increases, the crustal stress of coal body is high, porosity is low, poor permeability, to improve coal seam
Flood effectiveness increases coal seam permeability frequently with pulsed infusion mode.Pulsed infusion is existed using the pressure vibration wave of liquid
Energy is propagated in liquid, water generates water attack and the water effect of splitting to coal body, so that coal body is generated fatigue damage accumulation, it is broken to form fatigue
It is bad, it generates that new, be mutually related coalmass crevasse net inside coal seam, and then increase water injection rate, expand radius of wetted bulb, promotes note
Water effect works well compared to traditional constant pressure water flooding.But during pulsed infusion, pulsation hydraulic pressure not only generates coal body
Fatigue damage-fracturing effect also can generate same effect to sealing material, and traditional cementing material, which easily generates, to be split
Gap causes borehole sealing to fail.For this reason, it may be necessary to provide a kind of sealing device of coal seam pulsed infusion drilling to eliminate pulsed infusion
To the influence that hole sealing device generates, the efficient sealed of pulsed infusion process drilling is realized.
Summary of the invention
The fluctuation pressure of sealing material is influenced in order to eliminate coal seam pulsed infusion in the process, guarantees pulsed infusion drilling
Sealing performance, the present invention provides a kind of coal seam pulsed infusion borehole sealing device and method for sealing, specific technical solution are as follows.
A kind of coal seam pulsed infusion borehole sealing device, including Grouting Pipe, aqueduct, check valve, the first water filling capsule, the
Two water filling capsules and seal capsule, water injecting drilling are disposed with the first water filling capsule, the second water filling capsule and close from outside to inside
Sealing capsule, across the first water filling capsule outlet the first water filling capsule and the second water filling capsule, aqueduct passes through Grouting Pipe
First water filling capsule extends to the second water filling capsule, and check valve is arranged in Grouting Pipe exit；Grain is evenly arranged in seal capsule
Diameter forms gradual buffer layer by the small particle become larger.
Preferably, the first water filling capsule, the second water filling capsule and seal capsule are set on water injection pipe, seal capsule
Drilling inner opposite end be provided with metal mesh.
Preferably, the both ends of seal capsule are provided with metal mesh, and metal mesh and water injection pipe are connected through a screw thread.
It may further be preferable that the particle in seal capsule is high silicaceous silicas or porous ceramics, drilling is inboard to brill
The partial size of particle is from large to small on the outside of hole.
It is also preferred that first water filling capsule and second water filling capsule using water-swellable watertight rubber material make and
At；The shell of the seal capsule is made using the watertight rubber of water-swellable；The first water filling capsule and the second note
The overall diameter of capsule with diuresis promoting function is less than the aperture of water injecting drilling.
A kind of coal seam pulsed infusion drilling and sealing method, using a kind of above-mentioned coal seam pulsed infusion borehole sealing device,
Its step includes:
Seal capsule is arranged in step A., is sequentially filled partial size by the small particle become larger, seal capsule is set in note
On water pipe；
Metal mesh is installed on the water injection pipe of step B. seal capsule front end；
Step C. installs the first water filling capsule and the second water filling capsule respectively on the water injection pipe at seal capsule rear, will infuse
Water pipe is imported along water injecting drilling；
Step D. send water to the first water filling capsule and the second water filling capsule respectively by Grouting Pipe and aqueduct；
After the water filling capsule of step E. first and the second water filling capsule expansion closing drilling, glue is filled the water to first by check valve
Slip casting in water injecting drilling between capsule and the second water filling capsule；
After the water filling of step F. water injection pipe, the shell Expansion sealing water injecting drilling of seal capsule.
Based on above-mentioned borehole sealing device, which drills mainly for pulsed infusion and carries out sealing of hole.In use, first
First according to the outer diameter of drilling size adjustment seal capsule, and it is sleeved on the outside of water injection pipe, it is gradual slow inside seal capsule
Layer is rushed, porous ceramic particles are filled by the descending sequence of grain diameter from front to back, to avoid pulsed infusion pair
The damage of hole sealing structure.Metal mesh is installed in seal capsule front end, is connected through a screw thread between metal mesh and water injection pipe.Sealant
Capsule rear end is the method for sealing of " a two stifled notes ".In pulsed infusion, around gradual buffer layer after seal capsule water suction rapidly
Expansion sealing, water become hydraulic pressure to sealing material and drilling by gradually release when the region of gradual buffer layer, to reduce
Impact, increase the safety of sealing of hole.
The beneficial effect comprise that
(1) pulsed infusion borehole sealing device in coal seam provided by the invention is provided with seal capsule, setting in seal capsule
There is gradual buffer layer, which buffers by the way that the particle of partial size gradual change is arranged, so as to avoid sealing of hole
Device is generated fatigue damage and destroyed by pulsation influence of hydraulic pressure.
(2) device first water filling capsule and second water filling capsule using water-swellable watertight rubber material production and
At so that water blockoff can either be facilitated, and conveniently being installed in water injecting drilling；The metal mesh of seal capsule end setting, passes through spiral shell
Line connection and water injection pipe are fixed, so as to play position-limiting action to seal capsule；The shell of seal capsule uses water-swellable
Watertight rubber so as to in seal rubber particle apply pressure guarantee that this is gradual to play the role of limit
The stability of buffer layer.
(3) method for sealing is cooperated using water filling capsule and seal capsule, adapts to the hole sealing device peace of water injecting drilling
Dress, and reinforce sealing of hole effect by way of slip casting, the setting of gradual buffer layer, can eliminate arteries and veins especially in seal capsule
The pressure vibration of liquid propagates energy by fluid injection when dynamic water filling, causes hole sealing device to generate fatigue damage and destroys to influence to cause
The problem of splitting effect, to improve coal seam infusion effect.
In addition, the present invention carries out release to water using porous media, successfully manages and become hydraulic pressure to sealing material and drilling
Impact and destruction, ensure that sealing of hole effect, improve the security reliability of sealing of hole；Gradual buffer layer is made of capsule, internal
For porous ceramics particle, without directly carrying out shaping processing to porous ceramics itself, cost is relatively low, is easy to adjust size；This dress
Set simple for structure, operating method is relatively simple, is easy to grasp and operate；There is important meaning for coal seam pulsed infusion hole-sealing technology
Justice.
Detailed description of the invention
Fig. 1 is coal seam pulsed infusion borehole sealing apparatus structure schematic diagram；
Fig. 2 is Section A-A structural schematic diagram；
Fig. 3 is section B-B structural schematic diagram；
In figure: 1- Grouting Pipe, 2- check valve, 3- injecting paste material, 4- seal capsule, 5- metal mesh, 6- first fill the water capsule,
7- water injection pipe, 8- aqueduct, 9- second fill the water capsule, the gradual buffer layer of 10-, 11- water injecting drilling.
Specific embodiment
In conjunction with shown in Fig. 1 to Fig. 3, a kind of coal seam pulsed infusion borehole sealing device and method for sealing tool provided by the invention
Body embodiment is as follows.
Embodiment 1
A kind of coal seam pulsed infusion borehole sealing device specific structure includes Grouting Pipe 1, aqueduct 7, check valve 2, first
It fills the water capsule 6, second and fills the water capsule 9 and seal capsule 4.The device is provided with seal capsule 4, is provided with gradually in seal capsule 4
Into formula buffer layer, which is buffered by the way that the particle of partial size gradual change is arranged, so as to avoid hole sealing device
By pulsation influence of hydraulic pressure, generates fatigue damage and destroy；The the first water filling capsule 6 and the second water filling capsule 9 of the device use chance water
The watertight rubber material of expansion is made, to can either facilitate water blockoff, and conveniently installs in water injecting drilling；Seal capsule
The metal mesh 5 of 4 ends setting, is connected through a screw thread and fixes with water injection pipe, so as to play position-limiting action to seal capsule 4；
The shell of seal capsule 4 uses the watertight rubber of water-swellable so as to apply pressure to the particle in seal rubber, thus
Play the role of limit, guarantees the stability of the gradual buffer layer.
Wherein, water injecting drilling 11 is disposed with the first water filling capsule 6, second water filling capsule 9 and sealant from outside to inside
Capsule 4, Grouting Pipe 1 across the first water filling capsule 6 outlet the first water filling capsule 6 and the second water filling capsule 9, wear by aqueduct 8
It crosses the first water filling capsule 6 and extends to the second water filling capsule 9, the setting of check valve 2, can be to by Grouting Pipe 1 in 1 exit of Grouting Pipe
Injecting paste material 3 is injected in drilling between first water filling capsule 6 and the second water filling capsule 9.Grain is evenly arranged in seal capsule 4
Diameter forms gradual buffer layer 10 by the small particle become larger.
First water filling capsule 6, second fills the water capsule 9 and seal capsule 4 is set on water injection pipe 7, thus facilitate installation,
The drilling inner opposite end of seal capsule 4 is provided with metal mesh 5, for limiting to seal capsule 4.Or in seal capsule 4
Both ends be provided with metal mesh 5, further fix seal capsule 4, metal mesh 5 and water injection pipe 7 are connected through a screw thread.Sealant
Particle in capsule 4 is high silicaceous silicas or porous ceramics, and the inboard partial size to drilling outside particle of drilling is from large to small.
First water filling capsule 6 and the second water filling capsule 9 are made using water-swellable watertight rubber material, seal capsule
4 shell is made using the watertight rubber of water-swellable, and the overall diameter of the first water filling capsule 6 and the second water filling capsule 9 is small
In the aperture of water injecting drilling 11, the diameter of specifically water filling capsule is slightly less than the diameter of water injecting drilling, thus facilitate installation, and
It can strict closing drilling after water-swellable.
A kind of coal seam pulsed infusion drilling and sealing method, using a kind of above-mentioned coal seam pulsed infusion borehole sealing device,
Its step includes:
Seal capsule 4 is arranged in step A., is sequentially filled partial size by the small particle become larger, seal capsule 4 is set in
On water injection pipe 7.
Metal mesh 5, metal mesh 5 and water injection pipe 7 are installed to connect by screw thread on the water injection pipe of 4 front end of step B. seal capsule
It connects.
Step C. installs the first water filling capsule 6 and the second water filling capsule 9 respectively on the water injection pipe at 4 rear of seal capsule,
Water injection pipe is imported along water injecting drilling.
Step D. send water to the first water filling capsule 6 and the second water filling capsule 9 respectively by Grouting Pipe 1 and aqueduct 8.
After step E. first fills the water capsule 6 and the second water filling expansion closing drilling of capsule 9, by check valve 2 to the first note
Injecting paste material 3 is injected in water injecting drilling 11 between capsule with diuresis promoting function 6 and the second water filling capsule 9.
After step F. water injection pipe 7 fills the water, the shell Expansion sealing water injecting drilling 11 of seal capsule 4.
Based on above-mentioned borehole sealing device, which drills mainly for pulsed infusion and carries out sealing of hole.In use, first
First according to the outer diameter of drilling size adjustment seal capsule, and it is sleeved on the outside of water injection pipe, it is gradual slow inside seal capsule
Layer is rushed, porous ceramic particles are filled by the descending sequence of grain diameter from front to back, to avoid pulsed infusion pair
The damage of hole sealing structure.Metal mesh is installed in seal capsule front end, is connected through a screw thread between metal mesh and water injection pipe.Sealant
Capsule rear end is the method for sealing of " a two stifled notes ".In pulsed infusion, around gradual buffer layer after seal capsule water suction rapidly
Expansion sealing, water become hydraulic pressure to sealing material and drilling by gradually release when the region of gradual buffer layer, to reduce
Impact, increase the safety of sealing of hole.
Embodiment 2
A kind of coal seam pulsed infusion borehole sealing device specific structure includes Grouting Pipe 1, aqueduct 8, check valve 2, first
It fills the water capsule 6, second and fills the water capsule 9 and seal capsule 4.Wherein, water injecting drilling 11 is disposed with the first water filling from outside to inside
Capsule 6, second fills the water capsule 9 and seal capsule 4, and Grouting Pipe 1 passes through the first water filling capsule 6 outlet and fills the water 6 He of capsule first
Between second water filling capsule 9, aqueduct 8 passes through the first water filling capsule 6 and extends to the second water filling capsule 9, and check valve 2 is arranged in slip casting
1 exit of pipe can inject slip casting material into the drilling between the first water filling capsule 6 and the second water filling capsule 9 by Grouting Pipe 1
Material.It is evenly arranged with partial size in seal capsule 4 by the small particle become larger, forms gradual buffer layer 10.In order to further
The gradual buffer layer 10 of guarantee stability, fixed husky net can be set in interlayer, guarantee that the small particle of partial size will not be to grain
The big direction of diameter jumps, and limits to the particle of every kind of partial size, the diameter of gradual buffer layer intracapsular for seal rubber, length
Degree and the setting such as particle size, need to be determined according to specific pulsed infusion hydraulic pressure, dynamic pressure and aperture, and when setting can make
With the particle of 4~8 kinds of different-grain diameters, every kind of particle setting length is about 3~10cm, the length of the particle that has no guts can it is equal can also
With unequal.
First water filling capsule 6, second fills the water capsule 9 and seal capsule 4 is set on water injection pipe 7, thus facilitate installation,
The drilling inner opposite end of seal capsule 4 is provided with metal mesh 5, for limiting to seal capsule 4.Other first water filling capsule
6 and second water filling capsule 9 packed polyurethane also can be used, after meeting water its expand and condense completes closure.When necessary, close
The both ends of sealing capsule may be provided with metal mesh 5, further fixes seal capsule 4, metal mesh 5 and water injection pipe 7 and is connected by screw thread
It connects.Particle in seal capsule 4 is high silicaceous silicas or porous ceramics, and the water absorption character of the material is utilized, and drilling is inboard
To drilling outside particle partial size from large to small.
First water filling capsule 6 and the second water filling capsule 9 are made using water-swellable watertight rubber material, seal capsule
4 shell is made using the watertight rubber of water-swellable, and the overall diameter of the first water filling capsule 6 and the second water filling capsule 9 is small
In the aperture of water injecting drilling 11, the diameter of specifically water filling capsule is slightly less than the diameter of water injecting drilling, thus facilitate installation, and
It can strict closing drilling after water-swellable.
A kind of coal seam pulsed infusion drilling and sealing method, using a kind of above-mentioned coal seam pulsed infusion borehole sealing device,
Its step includes:
The diameter and length dimension of seal capsule 4 is arranged in step A., is successively filled out according to actual water filling fluctuation pressure situation
Partial size is filled by the small particle become larger, establishes the suitably gradual buffer layer of length and diameter, seal capsule 4 is set in note
On water pipe.
Metal mesh 5, metal mesh 5 and water injection pipe 7 are installed to connect by screw thread on the water injection pipe of 4 front end of step B. seal capsule
It connects, to be limited to seal capsule 4.
Step C. installs the first water filling capsule 6 and the second water filling capsule 9 respectively on the water injection pipe 7 at 4 rear of seal capsule,
The length dimension of first water filling capsule 6 and the second water filling capsule 9 is determined according to specific sealed borehole length, in addition first fills the water capsule
6 and second water filling the distance between capsule 9 be also to be determined according to actual sealed borehole length, water injection pipe 7 is imported along water injecting drilling.
Step D. send water to the first water filling capsule 6 and the second water filling capsule 9 respectively by Grouting Pipe 1 and aqueduct 7, makes it
Water-swellable completes the expansion plugging of drilling.
After step E. first fills the water capsule 6 and the second water filling expansion closing drilling of capsule 9, pass through Grouting Pipe 1 and check valve 2
The slip casting into the water injecting drilling 11 between the first water filling capsule 6 and the second water filling capsule 9, injecting paste material block drilling.
After step F. water injection pipe 7 fills the water, the shell Expansion sealing water injecting drilling of seal capsule.
The method for sealing is cooperated using water filling capsule and seal capsule, adapts to the hole sealing device installation of water injecting drilling,
And reinforce sealing of hole effect by way of slip casting, the setting of gradual buffer layer, can eliminate pulsation especially in seal capsule
The pressure vibration of liquid propagates energy by fluid injection when water filling, causes hole sealing device to generate fatigue damage and destroys to influence fracturing
The problem of effect, to improve coal seam infusion effect.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (6)
1. a kind of coal seam pulsed infusion borehole sealing device, which is characterized in that including Grouting Pipe, aqueduct, check valve, the first note
Capsule with diuresis promoting function, the second water filling capsule and seal capsule, water injecting drilling are disposed with the first water filling capsule, the second water filling from outside to inside
Capsule and seal capsule, the Grouting Pipe pass through first water filling capsule outlet first water filling capsule and second water filling capsule it
Between, the aqueduct passes through the first water filling capsule and extends to the second water filling capsule, and the check valve is arranged in Grouting Pipe exit；Institute
It states and is evenly arranged with partial size in seal capsule by the small particle become larger, form gradual buffer layer.
2. a kind of coal seam pulsed infusion borehole sealing device according to claim 1, which is characterized in that first water filling
Capsule, the second water filling capsule and seal capsule are set on water injection pipe, and the drilling inner opposite end of the seal capsule is provided with
Metal mesh.
3. a kind of coal seam pulsed infusion borehole sealing device according to claim 1, which is characterized in that the seal capsule
Both ends be provided with metal mesh, metal mesh and water injection pipe are connected through a screw thread.
4. a kind of coal seam pulsed infusion borehole sealing device according to claim 2, which is characterized in that the seal capsule
Interior particle is high silicaceous silicas or porous ceramics, and the inboard partial size to drilling outside particle of drilling is from large to small.
5. a kind of coal seam pulsed infusion borehole sealing device according to claim 1, which is characterized in that first water filling
Capsule and the second water filling capsule are made using water-swellable watertight rubber material；The shell of the seal capsule uses chance water
The watertight rubber of expansion is made；The overall diameter of the first water filling capsule and the second water filling capsule is less than the hole of water injecting drilling
Diameter.
6. a kind of coal seam pulsed infusion drilling and sealing method utilizes a kind of described in any one of claim 1 to 55 described in any item coal seam pulsation notes
Water drilling hole sealing device, which is characterized in that step includes:
Seal capsule is arranged in step A., is sequentially filled partial size by the small particle become larger, seal capsule is set in water injection pipe
On；
Metal mesh is installed on the water injection pipe of step B. seal capsule front end；
Step C. installs the first water filling capsule and the second water filling capsule respectively on the water injection pipe at seal capsule rear, by water injection pipe
It is imported along water injecting drilling；
Step D. send water to the first water filling capsule and the second water filling capsule respectively by Grouting Pipe and aqueduct；
Step E. first fill the water capsule and second water filling capsule expansion closing drilling after, by check valve to first water filling capsule and
Slip casting in water injecting drilling between second water filling capsule；
After the water filling of step F. water injection pipe, the shell Expansion sealing water injecting drilling of seal capsule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465875.1A CN110219615B (en) | 2019-05-31 | 2019-05-31 | Coal seam pulsating water injection drilling hole sealing device and hole sealing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910465875.1A CN110219615B (en) | 2019-05-31 | 2019-05-31 | Coal seam pulsating water injection drilling hole sealing device and hole sealing method |
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| CN110219615B CN110219615B (en) | 2021-11-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107419A (en) * | 2021-05-07 | 2021-07-13 | 永城煤电控股集团有限公司 | Coal mine drilling and hole sealing device |
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