CN205805503U - Coal mine gas extraction drill hole band pressure grouting rapid hole packer - Google Patents

Coal mine gas extraction drill hole band pressure grouting rapid hole packer Download PDF

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Publication number
CN205805503U
CN205805503U CN201620523691.8U CN201620523691U CN205805503U CN 205805503 U CN205805503 U CN 205805503U CN 201620523691 U CN201620523691 U CN 201620523691U CN 205805503 U CN205805503 U CN 205805503U
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grouting pipe
grouting
hole
coal mine
gas extraction
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CN201620523691.8U
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Chinese (zh)
Inventor
孙怀亮
王秀琴
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Huainan Great Tun Grouting Engineering Co Ltd
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Huainan Great Tun Grouting Engineering Co Ltd
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Abstract

Coal mine gas extraction drill hole band pressure grouting rapid hole packer, including Grouting Pipe and pouch, described Grouting Pipe is divided into before and after two sections, is front and back provided with Crossed Circle air pressure explosive valve between two sections of Grouting Pipe, and this Crossed Circle air pressure explosive valve connects the Grouting Pipe of both sides by silk head and attaching type rubber hose coupling;A pouch it is cased with respectively in leading portion Grouting Pipe and back segment Grouting Pipe, the two ends of the pouch in leading portion Grouting Pipe are withheld by metal canula and are fixed in Grouting Pipe, the front end of the pouch in back segment Grouting Pipe is withheld by metal canula and is fixed in Grouting Pipe, rear end is fixed in Grouting Pipe by plug, the rear end of this plug closure Grouting Pipe;The part that Grouting Pipe is surrounded by two pouches is equipped with annular check valve;This coal mine gas extraction drill hole band pressure grouting rapid hole packer uses slurry injection technique with pressure, it is achieved airtight sealing of hole, possesses sandwich tape pressure grouting, advantage that sealing of hole seal is strong, and overall structure is more succinct, and sealing of hole operation more simplifies reliable, and obturation effect is better.

Description

Coal mine gas extraction drill hole band pressure grouting rapid hole packer
Technical field
This utility model relates to coal mine gas extraction drill hole technical field, especially a kind of coal mine gas extraction drill hole band pressure grouting Rapid hole packer.
Background technology
Existing coal mine gas extraction drill hole technology: one, polyurethane hole sealing technology: domestic coal mine gas extraction drill hole is generally adopted With macromolecule polyurethane chemical materials sealing of hole.
Two, mechanical elasticity hole sealing technology.
Three, inflated type hole packer: inflated type hole packer mainly has two kinds, one is non-aerated gasbag formula, and another kind is inflation Gasbag-type.
Four, hydraulic expansion type hole packer.
Five, coal mine gas quick fluid filling hole sealing device with pressure.
The defect of above prior art: one, polyurethane hole sealing technology: the shortcoming that this method for sealing has two aspects: the One, comprcssive strength is low;The second, compressible amount is the biggest.Highly gassy mine and coal and gas outburst mine are often adopted deep relatively big, Corresponding crustal stress is the biggest, and coal strength is the most relatively low in addition, down-hole coal bed boring under crustal stress effect by gradually creep, Boring is during creep, and boring coal body around will produce loosening crack, and make to leak air during gas pumping passage.
Two, mechanical elasticity hole sealing technology: this method for sealing poor sealing performance to boring, gas leakage is serious, can not use at all The sealing of hole of long-acting extraction borehole in coal seam.
Three, inflated type hole packer: only as interim sealing of hole.
Four, hydraulic expansion type hole packer: this sealing of hole is infeasible for the long-acting extraction in coal seam, reason has two: the first, cost Higher;The second, micro-leakage of hole packer is it cannot be guaranteed that the effect of long-acting sealing of hole.
Five, coal mine gas quick fluid filling hole sealing device with pressure: this hole packer achieves injection hole sealing with pressure, and sealing of hole seal is strong. Its shortcoming is to remain traditional slurry recovering tube, and structure is the most succinct;Pressure gauge is installed in slurry recovering tube, when country rock is the most broken When the slip casting time is longer, the cement grout in slurry recovering tube may precipitate, solidification, and build-up of pressure table pressure measurement is inaccurate, impact band The monitoring of pressure grouting.
Utility model content
This utility model aims to provide a kind of employing slurry injection technique with pressure, it is achieved airtight sealing of hole, possesses sandwich tape pressure grouting, envelope The advantage that hole seal is strong, overall structure is more succinct, and sealing of hole operation more simplifies reliable, the coal that obturation effect is better Ore deposit mash gas pumping drilling band pressure grouting rapid hole packer.
For achieving the above object, this utility model provides following technical scheme: coal mine gas extraction drill hole band pressure grouting quickly seals Hole device, including Grouting Pipe and pouch, described Grouting Pipe is divided into before and after two sections, is front and back provided with Crossed Circle gas between two sections of Grouting Pipe Pressure explosive valve, this Crossed Circle air pressure explosive valve connects the Grouting Pipe of both sides by silk head and attaching type rubber hose coupling;Leading portion slip casting Being cased with a pouch respectively on pipe and back segment Grouting Pipe, the two ends of the pouch in leading portion Grouting Pipe are withheld fixing by metal canula In Grouting Pipe, the front end of the pouch in back segment Grouting Pipe is withheld by metal canula and is fixed in Grouting Pipe, and rear end is by stifled Head is fixed in Grouting Pipe, the rear end of this plug closure Grouting Pipe;The part that Grouting Pipe is surrounded by two pouches is equipped with annular Check valve.
As further scheme of the present utility model: the material of described Grouting Pipe is the aluminium-plastic pipe of external diameter 16mm.
As further scheme of the present utility model: the front end of described Grouting Pipe is provided with attaching type rubber hose coupling.
As further scheme of the present utility model: be provided with steel bar end in the rear end tube head of described Grouting Pipe.
As further scheme of the present utility model: the material of described pouch is anti-static inflaming-retarding fabric.
As further scheme of the present utility model: described Crossed Circle air pressure explosive valve is by threeway, nut, aluminium foil and sealing Circle composition.
As further scheme of the present utility model: this coal mine gas extraction drill hole band pressure grouting rapid hole packer and gas pumping Hole sealing tube colligation, and the most external three control grouting device with pressure and grouting pumps.
Compared with prior art, the beneficial effects of the utility model are: this coal mine gas extraction drill hole band pressure grouting rapid hole sealing The seal of mash gas pumping drilling sealing of hole put forth effort on by device, i.e. uses slurry injection technique with pressure, it is achieved airtight sealing of hole;Secondly, solve Other kind hole packer sealing of hole operations are cumbersome, operate more complicated deficiency, only with single cement injection, complete all Sealing of hole process.In addition to possessing the advantage that sandwich tape pressure grouting, sealing of hole seal are strong, overall structure is more succinct, and sealing of hole operates More simplifying reliable, obturation effect is better.This product operation is simple, easy to use, it is possible to increase gas pumping effect, Reduce labor strength, improve work efficiency, be suitable for the drilling and sealing of various geological conditions, particularly dip angle of hole big, The upward hole or lower to boring that sealed borehole length is deep.
Accompanying drawing explanation
Fig. 1 is mounting process schematic diagram of the present utility model;
Fig. 2 is overall structure schematic diagram of the present utility model;
Fig. 3 is the structural representation of attaching type rubber hose coupling;
Fig. 4 is the structural representation of Grouting Pipe;
Fig. 5 is the structural representation of metal canula;
Fig. 6 is the structural representation of pouch;
Fig. 7 is the structural representation of silk head;
Fig. 8 is the structural representation of Crossed Circle air pressure explosive valve;
Fig. 9 is the structural representation of plug;
Figure 10 is the structural representation of annular check valve.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clearly Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Refer to Fig. 1-10, in this utility model embodiment, coal mine gas extraction drill hole band pressure grouting rapid hole packer, including Grouting Pipe 2 and pouch 4, described Grouting Pipe 2 is external diameter 16mm aluminium-plastic pipe, and Grouting Pipe 2 is divided into before and after two sections, front and back two sections Being provided with Crossed Circle air pressure explosive valve 6 between Grouting Pipe 2, this Crossed Circle air pressure explosive valve 6 is by silk 5 and attaching type sebific duct Joint 1 connects the Grouting Pipe 2 of both sides;A pouch 4, leading portion it is cased with respectively in leading portion Grouting Pipe 2 and back segment Grouting Pipe 2 The capsule being fixed in Grouting Pipe 2, in back segment Grouting Pipe 2 is withheld, by metal canula 3, in the two ends of the pouch 4 in Grouting Pipe 2 The front end of bag 4 is withheld by metal canula 3 and is fixed in Grouting Pipe 2, and rear end is fixed in Grouting Pipe 2 by plug 7, This plug 7 blocks the rear end of Grouting Pipe 2;The part that Grouting Pipe 2 is surrounded by two pouches 4 is equipped with annular check valve 8, When making slip casting, serosity can only unidirectional flow out in pipe, it is impossible to is flowed back to pipe by pouch 4 interior.
Further, the front end of described Grouting Pipe 2 is provided with attaching type rubber hose coupling 1.
Further, it is provided with steel bar end in the rear end tube head of described Grouting Pipe 2.
Further, described pouch 4 is sewed by anti-static inflaming-retarding fabric.
Further, described Crossed Circle air pressure explosive valve 6 is made up of threeway, nut, aluminium foil, sealing ring, selects different thick The aluminium foil of degree, can adjust and obtain required burst pressure.
Further, this coal mine gas extraction drill hole band pressure grouting rapid hole packer and gas pumping hole sealing tube 21 (real pipe, floral tube) Lay after banded simultaneously, and the most external three control grouting device 22 with pressure and grouting pump 23.
As shown being the representational example that is embodied as of one of the present utility model, implementation is as follows: coal mine gas drainage Boring band pressure grouting rapid hole packer is mainly by attaching type rubber hose coupling 1, Grouting Pipe 2, metal canula 3, pouch 4,4 ' Silk 5, Crossed Circle air pressure explosive valve 6, plug 7, annular check valve 8 etc. are constituted.Attaching type rubber hose coupling 1 is managed by button Machine is fastenedly connected with Grouting Pipe 2, and annular check valve 8 is by boringSet sebific duct, metal canula 3 have been withheld Becoming to make, during slip casting, serosity can only unidirectional flow out in pipe, it is impossible to is flowed back in pipe by pouch 4;Pouch 4 passes through metal canula 3 withhold and are fixed in Grouting Pipe 2, for two of boring closure;When using plug 7 to block Grouting Pipe 2, first at tube head It is inserted intoSteel bar end, then withholds;A whole set of hole packer is attached assembling by 4 ' silks 5.
Hole packer is the most external three control grouting device 22 with pressure, grouting pumps 23 when installing.Hole packer and gas pumping hole sealing tube Lay after 21 (real pipe, floral tubes) are banded simultaneously.
Operation principle of the present utility model and using method thereof: the slip casting of coal mine gas extraction drill hole band pressure grouting rapid hole packer Pipe 2 is sequentially connected with three control grouting devices with pressure, grouting pump.Starting grouting pump, cement grout enters Grouting Pipe 2, due to The effect serosity of check valve initially enters in pouch 41 and pouch 42, and pouch 4 expands rapidly, is fastened by the external diameter of pouch 4 On hole wall, it is achieved the closing at hole packer two ends;When slurry pressure is more than 1MPa, Crossed Circle air pressure explosive valve 6 explosion, Serosity flows into the boring in the middle of two pouches 4 and circumferential crack area thereof and geological structural belt, completes slip casting under the conditions of with pressure Filling, it is achieved multi-layer sealed.When reaching grouting design final pressure value (2Mpa or technical measures setting), complete sealing of hole and make Industry.Hole sealing tube is connected with methane gas extraction pipeline, carries out gas drainage under suction by extraction system.This hole packer is simple for structure, skill Art is advanced, is suitable for the drilling and sealing of various geological conditions, particularly dip angle of hole is big, sealed borehole length is deep upward hole or lower to Hole.
Use and operate:
1, hole sealing tube floral tube is pushed at the bottom of hole, push the real pipe of sealing of hole successively.According to hole packer length and sealing of hole reality pipe colligation jail Gu, send into boring, hole packer put in boring completely.
2, with three, the Grouting Pipe of hole packer is controlled grouting device with pressure to be connected, then be connected with grouting pump;
3, starting grouting pump slip casting in hole, early stage grouting pressure controls at about 0.6MPa, and after about 2 minutes, pouch fills, Slurry pressure gradually rises up to 1Mpa (explosive valve burst pressure force value), and explosive valve explosion, serosity splits to central bore and periphery Gap carries out band pressure grouting, until slurry pressure reaches final pressure value and stops slip casting, it is achieved multilamellar is airtight.
4, closing aperture valve after slip casting, in boring, serosity will not occur refluence situation, and hole packer is automatically in boring Remain inflated for.
5, remove three control grouting device with pressure and grouting pumps after sealing of hole, hole sealing tube is attached with gas drainage pipeline, logical Cross extraction system to draw out methane.
Construction features of the present utility model and advantage thereof: one, annular check valve: make serosity the most through-flow, and Rightabout ends, it is adaptable to pouch slip casting, it is achieved two blocks.
Two, two-way annular explosive valve:
1, (grouting pressure is less than 1Mpa) before the explosion of aluminium foil diaphragm, pouch slip casting is the fullest, plays the work of two closure With;After diaphragm explosion, it is possible to change serosity and flow to, central bore and circumferential crack are carried out slip casting;
2, compact conformation, firmly, easily installs, the suitable narrow and small environment of coal mine gas extraction borehole;
3, diaphragm burst pressure is stable, little by external interference, influenced by ambient temperature little.The film of different-thickness can be selected Sheet, meets required burst pressure.
Three, three control grouting device with pressure:
1, grouting pump grouting pressure is controlled;
2, slurry pressure in pouch is controlled;
3, slurry pressure in wall-rock crack band is controlled.
4, injection hole sealing with pressure is really realized.
Four, attaching type rubber hose coupling (inside adding sealing ring) carries out pipeline connection, has good leak tightness, firm and reliable connection Advantage.
Technical performance of the present utility model and basic size:
Project Unit FKW-113/1.3
Length mm Fixed according to drilling depth
Gas hole sealing tube external diameter mm 50
Pouch inflated outer diameter mm 60-160
It is suitable for external diameter mm 65-150
Pouch minimum burst pressure MPa 3
Operating pressure MPa 0.6
The beneficial effects of the utility model: one, sealing of hole automatization: after hole packer sends into boring, only need to start grouting pump Realizing the automatic hole sealing of whole boring, the relatively sealing of hole operation sequence of other kind hole packers is greatly simplified, and decreases workman simultaneously Labor intensity, improves work efficiency.
Two, band pressure grouting: between grouting pump and hole packer equipped with three control grouting devices with pressure, can with effective monitoring slurry pressure, Really realizing band pressure grouting, make serosity fully be pressed into boring circumferential crack, fill up note real, borehole sealing is accomplished airtight tight.
Three, active support: after slip casting, pouch and wall rock grouting could be formed with effect supporting, makes the boring of sealing of hole section around form height Stressed zone, it is to avoid follow-up generation crack, forms the leakage path of gas pumping.
Four, technique is advanced: this hole packer is simple for structure, advanced technology, and sealing of hole operation is easy to grasp, sealing of hole good leak tightness, Gas extraction concentration can be improved.
The purpose that this utility model is finally reached: one, solve the limitation of tradition hole sealing technology, it is achieved airtight sealing of hole.
Two, solve other kind hole packer sealing of hole operations cumbersome, operate more complicated present situation.
Three, existing coal mine gas quick fluid filling hole sealing device with pressure is solved, because of the slurry recovering tube (country rock under special circumstances being provided with Broken, when the slip casting time is longer) cement precipitation, blocking pipeline in the pipe that is likely to occur, inaccurate the asking of build-up of pressure table pressure measurement Topic, makes injection hole sealing technology more perfect, reliable.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, Er Qie In the case of spirit or essential attributes of the present utility model, it is possible to realize this utility model in other specific forms. Therefore, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, this practicality is new The scope of type is limited by claims rather than described above, it is intended that by the containing of equivalency in claim that fall All changes in justice and scope are included in this utility model.Should not be considered as any reference in claim limiting Involved claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only comprises One independent technical scheme, this narrating mode of description is only the most for clarity sake, and those skilled in the art should be by Description is as an entirety, and the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can With other embodiments understood.

Claims (7)

1. coal mine gas extraction drill hole band pressure grouting rapid hole packer, including Grouting Pipe and pouch, it is characterised in that described Grouting Pipe is divided into before and after two sections, is front and back provided with Crossed Circle air pressure explosive valve between two sections of Grouting Pipe, this Crossed Circle air pressure explosive valve The Grouting Pipe of both sides is connected by silk head and attaching type rubber hose coupling;One it is cased with respectively in leading portion Grouting Pipe and back segment Grouting Pipe Pouch, the two ends of the pouch in leading portion Grouting Pipe are withheld by metal canula and are fixed in Grouting Pipe, the capsule in back segment Grouting Pipe The front end of bag is withheld by metal canula and is fixed in Grouting Pipe, and rear end is fixed in Grouting Pipe by plug, and this plug blocks The rear end of Grouting Pipe;The part that Grouting Pipe is surrounded by two pouches is equipped with annular check valve.
Coal mine gas extraction drill hole band pressure grouting rapid hole packer the most according to claim 1, it is characterised in that institute State the aluminium-plastic pipe that material is external diameter 16mm of Grouting Pipe.
Coal mine gas extraction drill hole band pressure grouting rapid hole packer the most according to claim 1, it is characterised in that institute The front end stating Grouting Pipe is provided with attaching type rubber hose coupling.
Coal mine gas extraction drill hole band pressure grouting rapid hole packer the most according to claim 1, it is characterised in that institute It is provided with steel bar end in stating the rear end tube head of Grouting Pipe.
Coal mine gas extraction drill hole band pressure grouting rapid hole packer the most according to claim 1, it is characterised in that institute The material stating pouch is anti-static inflaming-retarding fabric.
Coal mine gas extraction drill hole band pressure grouting rapid hole packer the most according to claim 1, it is characterised in that institute State Crossed Circle air pressure explosive valve to be made up of threeway, nut, aluminium foil and sealing ring.
Coal mine gas extraction drill hole band pressure grouting rapid hole packer the most according to claim 1, it is characterised in that should Coal mine gas extraction drill hole band pressure grouting rapid hole packer and gas pumping hole sealing tube colligation, and the most external three control band pressure injections Sizing device and grouting pump.
CN201620523691.8U 2016-06-03 2016-06-03 Coal mine gas extraction drill hole band pressure grouting rapid hole packer Active CN205805503U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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