CN109138908B - Inflatable hole packer for drilling grouting and application method thereof - Google Patents
Inflatable hole packer for drilling grouting and application method thereof Download PDFInfo
- Publication number
- CN109138908B CN109138908B CN201811289907.9A CN201811289907A CN109138908B CN 109138908 B CN109138908 B CN 109138908B CN 201811289907 A CN201811289907 A CN 201811289907A CN 109138908 B CN109138908 B CN 109138908B
- Authority
- CN
- China
- Prior art keywords
- hole
- flexible
- layer
- drilling grouting
- inflatable
- 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.)
- Active
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 239000011241 protective layer Substances 0.000 claims abstract description 19
- 239000010410 layer Substances 0.000 claims description 74
- 229920001971 elastomer Polymers 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 241001391944 Commicarpus scandens Species 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 239000002775 capsule Substances 0.000 description 11
- 230000000903 blocking effect Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 208000034693 Laceration Diseases 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002035 prolonged effect Effects 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
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an inflatable hole packer for drilling grouting, which comprises a body and a flexible airtight barrel, wherein the middle part of the body is inwards recessed along the circumferential direction to form a necking part, two ends of the flexible airtight barrel are connected to two ends of the necking part in an airtight manner, the outer side of the necking part is coated with a protective layer along the periphery of the body, a containing cavity is formed between the protective layer and the necking part, and a barrel body of the flexible airtight barrel is arranged in the containing cavity; the body at necking down portion both ends is provided with outer protruding portion along circumference, the outside terminal surface of outer protruding portion evenly is provided with the guide roller, outer protruding portion orientation one side of contracting the neck is concave cambered surface, outer protruding portion is kept away from one side of contracting the neck is the outer conical surface. Meanwhile, the invention also discloses a using method of the inflatable hole packer for drilling grouting, and the inflatable hole packer has the technical effects of good sealing performance, scratch resistance and durability.
Description
Technical Field
The invention relates to the field of coal mine grouting devices, in particular to a hole packer for drilling grouting and a using method thereof.
Background
The drilling grouting and the drilling gas extraction are required to seal the drilling, and the currently commonly used drilling sealing technology comprises cement mortar plugging, polyurethane foaming plugging, an inflatable capsule hole packer and the like. The inflatable capsule plugging can realize quick plugging of a drilled hole by inflation, and after construction is finished, the hole packer is removed or moved by deflation, so that the inflatable capsule plugging is convenient to use and is widely applied.
However, the existing capsule of the inflatable capsule hole packer adopts rubber materials, the rubber material part is in contact with the borehole wall, the expansion force is limited, and the leakage between the capsule and the borehole wall is very easy. In addition, after a certain time, the rubber is easy to age and crack, and as the capsule of the inflatable capsule hole packer is arranged on the outer side of the hole packer and protrudes out of the grouting pipe, the capsule is extremely easy to be scratched by the wall of the drilled hole in the process of feeding or removing the capsule into or from the drilled hole, and the inflatable capsule hole packer can be damaged due to air leakage.
In view of the foregoing, there is a need for an inflatable sealer that has good sealing effect, is resistant to laceration, and is durable.
Disclosure of Invention
The invention aims to provide an inflatable hole packer for drilling grouting, which has the technical effects of good sealing performance, scratch resistance and durability.
The invention provides a using method of the inflatable hole packer for drilling grouting.
In order to achieve the first object, the present invention adopts the following technical scheme:
An inflatable hole packer for drilling grouting, comprising: a body and a flexible air-tight cylinder; the middle part of the body is inwards recessed along the circumferential direction to form a necking part, two ends of the flexible airtight barrel are connected to two ends of the necking part in an airtight manner, the outer side of the necking part is coated with a protective layer along the periphery of the body, a containing cavity is formed between the protective layer and the necking part, and the barrel body of the flexible airtight barrel is arranged in the containing cavity;
The outer parts are arranged on the bodies at the two ends of the necking part along the circumferential direction, guide rollers are uniformly arranged on the outer end faces of the outer parts, the side, facing the necking part, of the outer parts is a concave cambered surface, and the side, far away from the necking part, of the outer parts is an outer conical surface;
When the flexible air-tight distribution cylinder is inflated, the flexible air-tight distribution cylinder can break the protective layer, the middle part of the flexible air-tight distribution cylinder is clung to the inner wall of the drilled hole to seal the drilled hole, and the concave cambered surface is clung to the two side parts of the flexible air-tight distribution cylinder.
Preferably, the necking part comprises a first cone panel, a second cone panel and a bottom cylinder plate, the diameter of the bottom cylinder plate is 1/2-2/3 of the diameter of the body, the diameters of the left side end of the first cone panel and the right side end of the second cone panel are equal to the diameter of the body, the diameters of the right side end of the first cone panel and the left side end of the second cone panel are equal to the diameter of the bottom cylinder plate, and the first cone panel, the bottom cylinder plate and the second cone panel are sequentially connected and integrally formed with the body.
Preferably, one side wall of the body at two sides of the necking part is an arched wall, an air charging hole is formed in the middle of the arched wall, and the air charging holes at two sides penetrate through the first cone panel and the second cone panel respectively.
Preferably, an axially arranged open slot is arranged between the outer flange parts at the two ends of the necking part and the body along the circumferential direction, a sealing layer is arranged in the open slot, and the sealing layer comprises a first sealing cushion layer and a second sealing cushion layer which are respectively compounded on the upper surface and the lower surface of the open slot; the concave cambered surface of the outer convex part is provided with a right-angle notch near the bottom along the circumferential direction, a bottom plate of the right-angle notch is provided with a first threaded hole, the body is provided with a second threaded hole at a position opposite to the first threaded hole, and two ends of the flexible airtight barrel are respectively embedded into the open grooves at two ends and are respectively positioned between the first sealing cushion layer and the second sealing cushion layer in the respective open grooves; the flexible airtight sealing device is characterized by further comprising a spiral fixing piece, wherein the spiral fixing piece penetrates through the first threaded hole, the first sealing cushion layer, the flexible airtight cylinder and the second sealing cushion layer to be fastened in the second threaded hole in a spiral mode.
Preferably, the right-angle notch is filled with a waterproof sealing joint mixture, a smooth layer is compounded on the surface of the concave cambered surface, the smooth layer is a polytetrafluoroethylene plate, and the shape of the concave cambered surface is matched with the shape of two side parts of the flexible airtight cloth layer in an inflated state.
Preferably, the flexible airtight cylinder has elasticity, the flexible airtight cylinder includes flexible airtight basic unit, rubber layer, flexible waterproof anticorrosive coating, the rubber layer is compound in the outside at the middle part of flexible airtight basic unit, flexible waterproof anticorrosive coating is compound in the outside of the both sides portion of flexible airtight basic unit, the length of rubber layer is not less than half of flexible airtight cylinder length.
Preferably, the end surfaces of the two ends of the body are compounded with third sealing cushion layers, the peripheral walls of the two ends of the body are internally provided with inner concave parts, and the inner concave parts are provided with external threads.
Preferably, the protruding height of the outer protruding portion is not smaller than the radius of the body, the taper of the outer conical surface is 15-30 degrees, and the upper end face of the opening end of the opening groove is a smooth arc face.
Preferably, the protective layer is made of plastic film or tinfoil or other waterproof materials which are easy to break.
In order to achieve another purpose, the invention adopts the following technical scheme:
The application method of the inflatable hole packer for drilling grouting comprises the following steps:
(1) Providing a plurality of inflatable hole sealers for drilling grouting, a plurality of connecting pipes and a corresponding number of internal thread sleeves, wherein the outer diameter of each connecting pipe, the outer diameter of the body and the outer diameter of each internal thread sleeve are equal, the outer wall of one side of each connecting pipe is provided with an arched wall with an inflatable hole in the middle, which is corresponding to the inflatable hole sealers for drilling grouting, the outer peripheral walls at the two ends of each connecting pipe are also concavely provided with external threads, and the internal threads of each internal thread sleeve are matched with the external threads;
(2) A connecting pipe is downwards placed into the drill hole from the hole opening, the connecting pipe and the other connecting pipe are connected in series through the internal thread sleeve, and the connecting pipe after being connected in series is continuously placed downwards;
(3) Repeating the step (2) until an inflatable hole packer for drilling grouting is required to be installed; at the moment, the bottom end air charging hole of the first inflatable hole packer for drilling grouting is sealed by a rubber plug, and one end of the inflatable hole packer for drilling grouting is connected with a connecting pipe which is put down in series through an internal thread sleeve;
(4) The other end of the inflatable hole packer for drilling grouting in the step (3) is connected with a connecting pipe through a threaded sleeve, and an inflation hole in the connecting pipe is just in butt joint communication with an inflation hole in the inflatable hole packer for drilling grouting;
(5) Continuously repeating the steps (2) - (4) to finish the installation work of all connecting pipes and the inflatable hole packer for drilling grouting;
(6) Inflating the inflation hole by an inflator pump and stabilizing the pressure; the connecting pipe is utilized to carry out the required work;
(7) Exhausting, sequentially taking out from the drill hole and disassembling all connecting pipes and the inflatable hole packer for grouting the drill hole;
(8) And flushing the connecting pipe and the inflatable hole packer for drilling grouting with water, airing, arranging the flexible airtight barrel in the necking part, and coating a protective layer outside.
The invention has the following technical effects:
(1) The invention uses the flexible air-tight cylinder to replace the existing rubber air bag, so that the strength is greatly increased, the aging is prevented, the air-tight cylinder is durable, and the air-tight effect is good; in addition, the shrinkage part is arranged in the middle of the main body of the hole packer, the outer side of the shrinkage part is coated with the protective layer along the outer periphery of the main body so as to form a containing cavity for placing the flexible airtight cylinder, on one hand, a closed space is formed, and the flexible airtight cylinder is prevented from being damaged by the external environment, and on the other hand, the flexible airtight cylinder is prevented from being scratched by the wall of the drilling hole in the process of lowering or retrieving because the flexible airtight cylinder is not protruded out of the pipe body.
(2) The invention skillfully arranges the outer protruding parts on the bodies at the two ends of the neck along the circumferential direction, and the side of the outer protruding part facing the neck is a concave cambered surface, and the side of the outer protruding part far away from the neck is an outer conical surface. The outer flange can increase the safety height of the flexible airtight barrel, and further reduces the risk of being scratched by the hole wall. The concave cambered surface is arranged, so that the side part of the flexible air-tight distribution cylinder in an inflated state can be supported and limited, the contact area and extrusion force between the flexible air-tight distribution cylinder and the hole wall are increased, and the plugging effect is improved. The external conical surfaces at the two ends can reduce the increased resistance of placing or taking out the hole packer due to the arrangement of the external convex part, and can clear away the collapsed soil body in the drilling hole to avoid reworking and hole sweeping due to hole blocking. Furthermore, the outer side end face of the outer flange part is uniformly provided with the guide rollers, and the hole packer can be conveniently placed or taken out through the guide rollers, so that the construction is greatly facilitated.
(3) The necking part adopts the first cone panel and the second cone panel, and the arrangement of the cone surfaces can guide slurry or other fluids in the necking part, so that the resistance caused by arranging the necking part is reduced.
(4) The invention utilizes the arched wall arranged on the body to arrange the air charging hole in the arched wall, and an air charging pipe is not required to be additionally arranged outside, thereby greatly simplifying the structure and facilitating the field operation.
(5) According to the invention, the open slot is formed between the outer flange and the body, and the flexible airtight barrel is fixed in a spiral fixing piece mode, so that the connection strength can be greatly improved; in addition, the airtight effect can be improved by providing the first and second sealing mats in the open groove.
(6) The invention is provided with the smooth layer on the concave cambered surface, so that the flexible air-tight distribution cylinder in an inflated state can freely expand to the side of the hole wall on the concave cambered surface, and can also avoid being scratched by the concave cambered surface.
(7) The invention can further improve the blocking effect and prevent leakage by compounding the rubber layer on the outer side of the middle part of the flexible air-tight base layer. In addition, the outer sides of the two side parts of the flexible air-tight base layer are compounded with the flexible waterproof and anticorrosive layers, so that the corrosion of cement paste or other slurry to the flexible air-tight barrel can be prevented, and the service life is prolonged. The invention has the advantages of pointedly compounding different material layers in different areas and playing a plurality of roles.
Drawings
FIG. 1 is a schematic diagram of the structure of one embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1 of the present invention;
FIG. 3 is an enlarged view of the invention at A in FIG. 1;
FIG. 4 is a schematic view of the structural layers of a flexible aerosol canister according to an embodiment of the invention;
fig. 5 is a schematic diagram of the principle of enhancing the plugging effect according to an embodiment of the present invention.
FIG. 6 is a schematic view of the use of one embodiment of the present invention;
wherein: the novel waterproof sealing gasket comprises a body, a 10-containing cavity, 11-arched walls, 12-inflation holes, 2-neck parts, 20-bottom cylinder plates, 21-first cone plates, 22-second cone plates, 3-outer convex parts, 31-outer cone surfaces, 32-concave arc surfaces, 320-smooth layers, 33-guide rollers, 34-right angle notches, 4-flexible airtight cylinders, 40-flexible airtight base layers, 41-rubber layers, 42-flexible waterproof anticorrosive layers, 5-protective layers, 6-first threaded holes, 7-spiral fixing pieces, 8-second threaded holes, 9-sealing layers, 91-first sealing cushion layers, 92-second sealing cushion layers, 13-inner threaded sleeves, 15-third sealing cushion layers, 16-connecting pipes and a-drilling holes.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Example 1:
as shown in fig. 1-2, an inflatable hole packer for grouting of a borehole, comprising: a body 1 and a flexible airtight barrel 4; the flexible airtight barrel 4 is utilized to replace the existing rubber air bags, so that the strength is greatly increased, the aging is prevented, the service life is long, and the airtight effect is good.
The middle part of the body 1 is concaved inwards along the circumferential direction to form a necking part 2, two ends of the flexible airtight barrel 4 are connected to two ends of the necking part 2 in an airtight manner, the outer side of the necking part 2 is coated with a protective layer 5 along the periphery of the body 1, a containing cavity 10 is formed between the protective layer 5 and the necking part 2, and the barrel of the flexible airtight barrel 4 is arranged in the containing cavity 10; on the one hand, the flexible airtight barrel 4 can be effectively prevented from being damaged by the external environment, and on the other hand, the flexible airtight barrel 4 is prevented from being scratched by the wall of the drilling hole a in the process of lowering or retrieving because the flexible airtight barrel does not protrude out of the pipe body.
The body 1 at two ends of the necking part 2 is provided with outer protruding parts 3 along the circumferential direction, the outer end surfaces of the outer protruding parts 3 are uniformly provided with guide rollers 33, one side of the outer protruding parts 3 facing the necking part 2 is a concave arc surface 32, and one side of the outer protruding parts 3 far away from the necking part 2 is an outer conical surface 31; the outer flange 3 itself can increase the safety height of the flexible air-tight cylinder 4, further reducing the risk of being scratched by the hole wall. The concave cambered surface 32 can support and limit the side part of the flexible air-tight distribution cylinder 4 in an inflated state, so that the contact area and extrusion force between the flexible air-tight distribution cylinder 4 and the hole wall are increased, and the plugging effect is enhanced. The external conical surfaces 31 at the two ends can reduce the increased resistance of placing or taking out the hole packer due to the arrangement of the external convex part 3, and can clear away the collapsed soil body in the drill hole a to avoid reworking and hole sweeping due to hole blocking. Furthermore, the outer side end face of the outer flange part 3 is uniformly provided with the guide rollers 33, and the guide rollers 33 can guide the hole packer so as to facilitate placement or removal of the hole packer, thereby greatly facilitating construction.
The principle of the present embodiment for enhancing the plugging effect is shown in fig. 6. Along with the inflation of the flexible airtight barrel 4, the lateral parts of the flexible airtight barrel are gradually attached to the outer protruding parts 3 at the two ends, at the moment, the length of the middle part attached to the hole wall is L 1, along with the increase of air pressure, the flexible airtight barrel 4 can provide supporting force vertical to the concave cambered surface 32 for the inflated flexible airtight barrel 4 due to the limiting effect of the outer protruding parts 3, the horizontal component forces of the supporting force at the two ends are balanced, the vertical component forces of the supporting force are overlapped and jointly act on the middle part of the flexible airtight barrel 4, and the extrusion force to the hole wall is further improved. In addition, as the volume of the internal gas expands, the flexible gas-tight tube 4 must expand toward the region between the outer convex portion 3 and the hole wall, and at this time, the bonding length between the middle portion and the hole wall is extended to L 2. As can be seen from the figure, the length of L 2 is greater than that of L 1, and the increase of the extrusion force of the hole wall and the increase of the fitting length inevitably enhances the plugging effect.
When the flexible airtight cylinder 4 is inflated, the flexible airtight cylinder 4 can break the protective layer 5, the middle of the flexible airtight cylinder is clung to the inner wall of the drilling hole a to seal the drilling hole a, and the concave cambered surface 32 is clung to the two side parts of the flexible airtight cylinder 4.
Preferably, the necking portion 2 includes a first cone panel 21, a second cone panel 22 and a bottom cylinder plate 20, the diameter of the bottom cylinder plate 20 is 1/2-2/3 of the diameter of the body 1, the diameters of the left side end of the first cone panel 21 and the right side end of the second cone panel 22 are equal to the diameter of the body 1, the diameters of the right side end of the first cone panel 21 and the left side end of the second cone panel 22 are equal to the diameter of the bottom cylinder plate 20, and the first cone panel 21, the bottom cylinder plate 20 and the second cone panel 22 are sequentially connected and integrally formed with the body 1. The provision of the tapered surfaces in the first and second tapered panels 21, 22 provides for diversion of slurry or other fluids within the interior, reducing drag caused by the provision of the necked portion 2.
Preferably, one side wall of the body 1 at two sides of the necking part 2 is an arched wall 11, an air charging hole 12 is arranged in the middle of the arched wall 11, and the air charging holes 12 at two sides penetrate through the first cone panel 21 and the second cone panel 22 respectively. Therefore, an inflation tube is not required to be additionally arranged outside, the structure is greatly simplified, and the site operation is convenient.
As shown in fig. 3, an axially arranged open slot is arranged between the outer flange 3 at two ends of the neck 2 and the body 1 along the circumferential direction, a sealing layer 9 is arranged in the open slot, and the sealing layer 9 comprises a first sealing cushion layer 91 and a second sealing cushion layer 92 respectively compounded on the upper surface and the lower surface of the open slot; the concave cambered surface 32 of the outer flange 3 is provided with a right-angle notch 34 near the bottom along the circumferential direction, a bottom plate of the right-angle notch 34 is provided with a first threaded hole 6, the body 1 is provided with a second threaded hole 8 at a position opposite to the first threaded hole 6, two ends of the flexible airtight barrel 4 are respectively embedded into the open grooves at two ends and are respectively positioned between the first sealing cushion layer 91 and the second sealing cushion layer 92 in the respective open grooves; a screw fixing piece 7 is further arranged, and the screw fixing piece 7 passes through the first threaded hole 6, the first sealing cushion layer 91, the flexible airtight cylinder 4 and the second sealing cushion layer 92 to be fastened in the second threaded hole 8 in a screw mode. Through the connecting structure, the connecting strength can be greatly improved; further, the airtight effect can be improved by providing the first and second seal cushion layers 91 and 92 in the open groove.
Preferably, the right-angle notch 34 is filled with a waterproof sealing joint mixture, a smooth layer 320 is compounded on the surface of the concave cambered surface 32, and the smooth layer 320 is a polytetrafluoroethylene plate. The flexible airtight cylinder 4 in the inflated state can be freely inflated to the hole wall side on the concave cambered surface 32, and can be prevented from being scratched by the concave cambered surface 32. The concave cambered surface 32 is matched with the shape of two side parts of the flexible airtight layer in an inflated state.
As shown in fig. 4, the flexible airtight cylinder 4 has elasticity, the flexible airtight cylinder 4 includes a flexible airtight base layer 40, a rubber layer 41, and a flexible waterproof and anticorrosive layer 42, the rubber layer 41 is compounded on the outer side of the middle part of the flexible airtight base layer 40, the flexible waterproof and anticorrosive layer 42 is compounded on the outer sides of two side parts of the flexible airtight base layer 40, and the length of the rubber layer 41 is not less than half of the length of the flexible airtight cylinder 4. The rubber layer 41 can further improve the blocking effect and prevent leakage; in addition, the flexible waterproof and anticorrosive layer 42 can prevent cement paste or other slurry from corroding the flexible airtight barrel 4, prolongs the service life, and achieves a plurality of beneficial effects by compounding different composite layers in different areas.
Preferably, the end surfaces of the two ends of the body 1 are compounded with a third sealing cushion layer 15, the peripheral walls of the two ends of the body 1 are provided with inner concave parts inwards, and the inner concave parts are provided with external threads. Through setting up the external screw thread on the concave part, can be through being equipped with etc. direct internal screw thread sleeve and threaded connection with it, avoid the screw thread sleeve evagination to increase friction.
Preferably, the protruding height of the outer protruding part 3 is not smaller than the radius of the body 1, the taper of the outer conical surface 31 is 15-30 degrees, and the angle can optimize the effect brought by the outer conical surface; the upper end face of the opening end of the opening groove is a smooth arc surface, and the smooth arc surface can prevent the flexible airtight barrel from being worn by the inflatable barrel.
Preferably, the protective layer 5 is made of plastic film or tinfoil or other waterproof materials which are easy to break.
Example 2:
As shown in fig. 1-4 and 6, the application method of the inflatable hole packer for drilling grouting comprises the following steps:
(1) Providing a plurality of inflatable hole sealers for drilling grouting, a plurality of connecting pipes 16 and a corresponding number of internally threaded sleeves 13, wherein the outer diameter of the connecting pipes 16, the outer diameter of the body 1 and the outer diameter of the internally threaded sleeves 13 are equal, the outer wall of one side of each connecting pipe 16 is provided with an arched wall 11 with an inflatable hole 12 in the middle correspondingly consistent with the inflatable hole sealers for drilling grouting, the outer peripheral walls at the two ends of each connecting pipe 16 are also provided with external threads in a concave manner, and the internal threads of the internally threaded sleeves 13 are matched with the external threads;
(2) A connecting pipe 16 is lowered from the hole opening into the drill hole a, the connecting pipe 16 and the other connecting pipe 16 are connected in series through the internal thread sleeve 13, and the connecting pipe 16 after being connected in series is continuously lowered;
(3) Repeating the step (2) until an inflatable hole packer for drilling grouting is required to be installed; at this time, the bottom end air charging hole 12 of the first inflatable hole packer for drilling grouting is sealed by a rubber plug, and one end of the inflatable hole packer for drilling grouting is connected with the connecting pipe 16 which is put down in series through the internal thread sleeve 13;
(4) The other end of the inflatable hole packer for drilling grouting in the step (3) is connected with a connecting pipe 16 through a threaded sleeve, and an air charging hole 12 in the connecting pipe 16 is just communicated with the air charging hole 12 in the inflatable hole packer for drilling grouting;
(5) Continuously repeating the steps (2) - (4) to finish the installation work of all the connecting pipes 16 and the inflatable hole packer for drilling grouting;
(6) Inflating the inside of the inflation hole 12 by an inflator pump and stabilizing the pressure; the connecting pipe 16 is utilized to carry out the required work;
(7) Exhausting, sequentially taking out and disassembling all connecting pipes 16 and the inflatable hole packer for drilling grouting from the drill hole a;
(8) The connecting pipe 16 and the inflatable hole packer for drilling grouting are washed by water and dried, the flexible airtight barrel 4 is placed in the necking part 2, and a protective layer 5 is coated outside.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (7)
1. An inflatable hole packer for drilling grouting, comprising: a body and a flexible air-tight cylinder; the method is characterized in that: the middle part of the body is inwards recessed along the circumferential direction to form a necking part, two ends of the flexible airtight barrel are connected to two ends of the necking part in an airtight manner, the outer side of the necking part is coated with a protective layer along the periphery of the body, a containing cavity is formed between the protective layer and the necking part, and the barrel body of the flexible airtight barrel is arranged in the containing cavity;
The outer parts are arranged on the bodies at the two ends of the necking part along the circumferential direction, guide rollers are uniformly arranged on the outer end faces of the outer parts, the side, facing the necking part, of the outer parts is a concave cambered surface, and the side, far away from the necking part, of the outer parts is an outer conical surface;
when the flexible air-tight distribution cylinder is inflated, the flexible air-tight distribution cylinder can break the protective layer, the middle part of the flexible air-tight distribution cylinder is clung to the inner wall of the drilled hole to seal the drilled hole, the concave cambered surface is clung to the two side parts of the flexible air-tight distribution cylinder,
The necking part comprises a first cone panel, a second cone panel and a bottom cylinder plate, the diameter of the bottom cylinder plate is 1/2-2/3 of the diameter of the body, the diameters of the left side end of the first cone panel and the right side end of the second cone panel are equal to the diameter of the body, the diameters of the right side end of the first cone panel and the left side end of the second cone panel are equal to the diameter of the bottom cylinder plate, the first cone panel, the bottom cylinder plate and the second cone panel are sequentially connected and integrally formed with the body,
One side wall of the body at two sides of the necking part is an arched wall, the middle part of the arched wall is provided with an air charging hole, the air charging holes at two sides respectively penetrate through the first cone panel and the second cone panel,
An axially arranged open groove is formed between the outer protruding portions at the two ends of the necking portion and the body along the circumferential direction, a sealing layer is arranged in the open groove, and the sealing layer comprises a first sealing cushion layer and a second sealing cushion layer which are respectively compounded on the upper surface and the lower surface of the open groove; the concave cambered surface of the outer convex part is provided with a right-angle notch near the bottom along the circumferential direction, a bottom plate of the right-angle notch is provided with a first threaded hole, the body is provided with a second threaded hole at a position opposite to the first threaded hole, and two ends of the flexible airtight barrel are respectively embedded into the open grooves at two ends and are respectively positioned between the first sealing cushion layer and the second sealing cushion layer in the respective open grooves; the flexible airtight sealing device is characterized by further comprising a spiral fixing piece, wherein the spiral fixing piece penetrates through the first threaded hole, the first sealing cushion layer, the flexible airtight cylinder and the second sealing cushion layer to be fastened in the second threaded hole in a spiral mode.
2. The gas-filled sealer for drilling grouting according to claim 1, wherein: waterproof sealing joint mixture is filled in the right-angle notch, a smooth layer is compounded on the surface of the concave cambered surface, the smooth layer is a polytetrafluoroethylene plate, and the shape of the concave cambered surface is matched with the shape of two side parts of the flexible airtight cloth layer in an inflated state.
3. The gas-filled sealer for drilling grouting according to claim 2, wherein: the flexible airtight barrel is elastic, the flexible airtight barrel comprises a flexible airtight base layer, a rubber layer and a flexible waterproof and anticorrosive layer, the rubber layer is compounded on the outer side of the middle of the flexible airtight base layer, the flexible waterproof and anticorrosive layer is compounded on the outer sides of two side parts of the flexible airtight base layer, and the length of the rubber layer is not less than half of the length of the flexible airtight barrel.
4. The gas-filled sealer for drilling grouting according to claim 3, wherein: the end faces of the two ends of the body are compounded with third sealing cushion layers, inner concave parts are inwards arranged on the peripheral walls of the two ends of the body, and external threads are arranged on the inner concave parts.
5. The gas-filled sealer for drilling grouting according to claim 4, wherein: the protruding height of the outer protruding portion is not smaller than the radius of the body, the taper of the outer conical surface is 15-30 degrees, and the upper end face of the opening end of the opening groove is a smooth arc face.
6. The gas-filled sealer for drilling grouting according to claim 5, wherein: the protective layer is made of plastic film or tinfoil or other waterproof materials which are easy to break.
7. A method of using the gas-filled sealer for drilling grouting of any one of claims 1-6, comprising the steps of:
(1) Providing a plurality of inflatable hole sealers for drilling grouting, a plurality of connecting pipes and a corresponding number of internal thread sleeves, wherein the outer diameter of each connecting pipe, the outer diameter of the body and the outer diameter of each internal thread sleeve are equal, the outer wall of one side of each connecting pipe is provided with an arched wall with an inflatable hole in the middle, which is corresponding to the inflatable hole sealers for drilling grouting, the outer peripheral walls at the two ends of each connecting pipe are also concavely provided with external threads, and the internal threads of each internal thread sleeve are matched with the external threads;
(2) A connecting pipe is downwards placed into the drill hole from the hole opening, the connecting pipe and the other connecting pipe are connected in series through the internal thread sleeve, and the connecting pipe after being connected in series is continuously placed downwards;
(3) Repeating the step (2) until an inflatable hole packer for drilling grouting is required to be installed; at the moment, the bottom end air charging hole of the first inflatable hole packer for drilling grouting is sealed by a rubber plug, and one end of the inflatable hole packer for drilling grouting is connected with a connecting pipe which is put down in series through an internal thread sleeve;
(4) The other end of the inflatable hole packer for drilling grouting in the step (3) is connected with a connecting pipe through a threaded sleeve, and an inflation hole in the connecting pipe is just in butt joint communication with an inflation hole in the inflatable hole packer for drilling grouting;
(5) Continuously repeating the steps (2) - (4) to finish the installation work of all connecting pipes and the inflatable hole packer for drilling grouting;
(6) Inflating the inflation hole by an inflator pump and stabilizing the pressure; then, the connecting pipe is utilized to carry out the required work;
(7) Deflating and sucking, and sequentially taking out and disassembling all connecting pipes and the inflatable hole packer for grouting the drill hole from the drill hole;
(8) And flushing the connecting pipe and the inflatable hole packer for drilling grouting with water, airing, arranging the flexible airtight barrel in the necking part, and coating a protective layer outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811289907.9A CN109138908B (en) | 2018-10-31 | 2018-10-31 | Inflatable hole packer for drilling grouting and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811289907.9A CN109138908B (en) | 2018-10-31 | 2018-10-31 | Inflatable hole packer for drilling grouting and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109138908A CN109138908A (en) | 2019-01-04 |
| CN109138908B true CN109138908B (en) | 2024-06-28 |
Family
ID=64807265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811289907.9A Active CN109138908B (en) | 2018-10-31 | 2018-10-31 | Inflatable hole packer for drilling grouting and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109138908B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006560B (en) * | 2020-01-02 | 2023-07-07 | 中南大学 | A packing device, packing structure and deep hole fracturing method |
| CN112845425B (en) * | 2020-12-24 | 2022-07-22 | 北京大地高科地质勘查有限公司 | Dynamic sealing rubber plug device for reinforcing coal seam roof |
| CN112282693B (en) * | 2020-12-28 | 2022-09-23 | 山西工程技术学院 | Method for closing inclined large-diameter drill hole of coal mine |
| CN113091545A (en) * | 2021-04-09 | 2021-07-09 | 中南大学 | Gas-thermal expansion pipe rock breaking device and rock breaking method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715228A (en) * | 2016-02-04 | 2016-06-29 | 河南理工大学 | Single-pipe airbag type gas drilled hole sealing device |
| CN209293744U (en) * | 2018-10-31 | 2019-08-23 | 徐州中国矿大岩土工程新技术发展有限公司 | A kind of bored grouting inflatable hole packer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050696B (en) * | 2007-05-10 | 2010-05-19 | 河南理工大学 | Capsule type grouting sealing device and its sealing method |
| CN201924876U (en) * | 2010-10-23 | 2011-08-10 | 李至芳 | Novel mine-used slurry injection hole sealing device |
| CN102200024B (en) * | 2011-05-11 | 2013-06-19 | 河南理工大学 | Gas extraction center divided-flow type grouting and hole sealing device and hole sealing method |
| CN103161443B (en) * | 2013-04-10 | 2016-01-20 | 中国矿业大学 | For spy envelope integral method and the device of mash gas pumping drilling |
| CN105863556A (en) * | 2016-06-03 | 2016-08-17 | 淮南大屯注浆工程有限公司 | Coal-mine gas extraction drilling pressurized grouting rapid hole packer and use method thereof |
| CN106050187B (en) * | 2016-08-03 | 2018-10-12 | 张国平 | The elastic fetalism hole packer of braiding |
-
2018
- 2018-10-31 CN CN201811289907.9A patent/CN109138908B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715228A (en) * | 2016-02-04 | 2016-06-29 | 河南理工大学 | Single-pipe airbag type gas drilled hole sealing device |
| CN209293744U (en) * | 2018-10-31 | 2019-08-23 | 徐州中国矿大岩土工程新技术发展有限公司 | A kind of bored grouting inflatable hole packer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109138908A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109138908B (en) | Inflatable hole packer for drilling grouting and application method thereof | |
| CN111021960B (en) | Method for improving stability of extraction drill hole of low-permeability soft coal seam | |
| CN112431988A (en) | Plugging device of drainage pipeline | |
| CN105715228B (en) | A kind of single tube gasbag-type gas drilling hole sealing device | |
| CN210718871U (en) | Open-pit mine water-rich deep hole blasting gas accurate isolation charging device | |
| WO2024016533A1 (en) | General steel sleeve structure of multi-specification shield machine and use method thereof | |
| CN216277795U (en) | A drill pipe front device for underground plugging and grouting | |
| CN213204131U (en) | Sleeve valve pipe slip casting rifle head | |
| CN204877366U (en) | Coalbed gas takes out and adopts recoverable quick hole sealing device | |
| CN209293744U (en) | A kind of bored grouting inflatable hole packer | |
| CN110630292A (en) | A device and method for sealing and grouting reinforcement of broken coal and rock mass | |
| CN212774209U (en) | Sealing device for well cementation wellhead | |
| CN212929067U (en) | High-sealing sleeve type glass fiber reinforced plastic pipeline with internal and external pressure test | |
| CN216379069U (en) | Inflatable grouting head locking device | |
| CN213982494U (en) | Plugging device of drainage pipeline | |
| CN113107420B (en) | Accurate positioning and rapid hole sealing method for mining inclined large-diameter deep hole | |
| CN210918970U (en) | Acidification packer | |
| CN216715579U (en) | Interim plugging device of pipeline | |
| CN212389913U (en) | Tee bend water pipe watertight fittings | |
| CN214273600U (en) | Coal mine gas extraction drilling hole sealing device | |
| CN210600662U (en) | Be used for great drainage pipe line interface restoration instrument of groundwater pressure | |
| CN211692391U (en) | Mechanical trigger type packer capable of repeatedly setting and unsetting | |
| CN217653499U (en) | Air bag plugging device | |
| CN210599019U (en) | A device for sealing and grouting reinforcement of broken coal and rock mass | |
| CN221032525U (en) | Continuous quick inflatable recovery annular air bag drilling hole packer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 221000 10th floor, building C6, Xuzhou Software Park, No. 6, Software Park Road, Quanshan District, Xuzhou City, Jiangsu Province Applicant after: Xuzhou Zhongkuang geotechnical Technology Co.,Ltd. Address before: Room 101, unit 1, building 1, science and Technology Incubation Center, National University Science and Technology Park, China University of mining and technology, Xuzhou City, Jiangsu Province Applicant before: CUMT GEOTECHNICAL ENGINEERING & NEW TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |