CN107100583A - A kind of fast hard mining hole packer of filter-press type and its application method - Google Patents

A kind of fast hard mining hole packer of filter-press type and its application method Download PDF

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Publication number
CN107100583A
CN107100583A CN201710322982.XA CN201710322982A CN107100583A CN 107100583 A CN107100583 A CN 107100583A CN 201710322982 A CN201710322982 A CN 201710322982A CN 107100583 A CN107100583 A CN 107100583A
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China
Prior art keywords
pouch
pipe
hole
fiber
mining
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Withdrawn
Application number
CN201710322982.XA
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Chinese (zh)
Inventor
马明振
苏方华
侯琳琳
马冬青
高明磊
陈娟
王辉
宋明举
马书卜
侯振安
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HEBEI TUOAN PIPE INSUSTRY CO Ltd
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HEBEI TUOAN PIPE INSUSTRY CO Ltd
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Priority to CN201710322982.XA priority Critical patent/CN107100583A/en
Publication of CN107100583A publication Critical patent/CN107100583A/en
Withdrawn legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/128Packers; Plugs with a member expanded radially by axial pressure
    • E21B33/1285Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/06Aluminous cements
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F7/00Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)

Abstract

The invention belongs to plugging device technical field, a kind of fast hard mining hole packer of filter-press type and its application method are disclosed.It is mainly characterized in that:Including gas drainage pipe body, the outer wall of the gas drainage pipe body is provided with preceding fiber pouch, rear fiber pouch, Grouting Pipe, the slurry that overflows and managed, Grouting Pipe is provided with preceding straight pipe, explosive valve, rear straight pipe, the mining mixing-filling system that Grouting Pipe afterbody is constituted with portable pneumatic agitator and Pneumatic injection pump for mine is connected, and mining sealing of hole PP Pipe Compound is provided with portable pneumatic agitator.The fast hard mining hole packer of this filter-press type, on the one hand can be filled the crack around drilling, eliminate the leakage path formed during perforate, eliminate leakage path at initial stage;On the other hand drilling can be made to obtain reliable supporting, it is ensured that the stabilization of drilling, makes no longer to produce new leakage path around drilling, it is to avoid the generation and development of later stage leakage path.Its method is simple, is adapted to various drillings, and sealing of hole effect is good.

Description

A kind of fast hard mining hole packer of filter-press type and its application method
Technical field
The invention belongs to coal mine gas extraction drill hole hole sealing technology field, more particularly to a kind of fast hard mining sealing of hole of filter-press type Device and its application method.
Background technology
It is to have a strong impact on one of big factors of coal mine production safety that coal-bed gas, which is protruded, and gas pumping is that coal mine gas is controlled The essential measure and main path managed and utilized, the quality of drilling gas extracting result, except the reasonable Arrangement of drilling, mainly The sealing quality of drilling orifice.Conventional mash gas pumping drilling hole sealing technology includes directly sealing using organic material or inorganic material It is stifled.Direct plugging method includes the artificial sealing of hole of clay, mechanic water injection cement mortar sealing of hole, foaming polymeric materials sealing of hole.Clay sealing of hole side Method sealed borehole length is shorter, and yellow mud is met water and softened, and density is bad, easy gas leakage.Artificial sealing of hole, drilling are rolled into a ball using yellow mud, cement Airtight quality is poor, activity duration length, labor intensity big, and scene is seldom used.Mechanical grouting equipment is heavy, increases workman's Labor intensity and handling time.It can ensure sealing quality for inclined drill, but for nearly level or gently inclined seam not It is applicable.It can not harden easily to shrink after consolidation, and solidification in the cement short time and cause gas leakage, so that sealing of hole after gas concentration declines Subtract than very fast.Current chemical polyurethane hole sealing technology mainly uses free-hand sealing of hole, and sealed borehole length only has 3~5m, it is impossible to effectively Block drilling gas extraction and loosen fissure zone, gas extraction concentration is not high, and the hole pumping and mining life-span is not long, in addition it is unskilled to operating Sealing of hole workman, because polyurethane foam reaction is fast, typically completed in 2~4min, extraction borehole be often difficult successfully sealing of hole and Cause useless hole.Its sealing material cost of foaming polymeric materials sealing of hole is high, and operation requires high.The sealing of hole of above-mentioned firedamp taking-out discharging drilling Method is all also limited to a sealing of hole stage, is not directed to how to improve later stage gas drainage under suction concentration, reduces gas pumping Utilization rate can simultaneously be polluted to atmospheric environment.
The content of the invention
The invention solves the problems that first technical problem be just to provide one kind can thoroughly effectively sealedly filter-press type it is hard soon Mining hole packer.
To solve above-mentioned first technical problem, the technical solution adopted by the present invention is:Including gas drainage pipe body, institute The outer wall for stating gas drainage pipe body is provided with the preceding fiber pouch being made up of inboard filtering pouch and outside closure pouch with after The two ends of fiber pouch, preceding fiber pouch and rear fiber pouch are respectively arranged with reeded fixed cover, and groove is provided with Fastening clamp, the Grouting Pipe that preceding fiber pouch is stretched at top passes through rear fiber pouch, is set at the top of Grouting Pipe in preceding fiber pouch The preceding straight pipe of slurry outlet before being provided with is equipped with, preceding straight-through pipe outer wall is provided with the top of preceding gum cover, preceding straight pipe and is provided with closure plate, preceding The Grouting Pipe in the explosive valve with rupture disk, rear fiber pouch is provided with Grouting Pipe between fiber pouch and rear fiber pouch On be provided with the rear straight pipe for being provided with rear slurry outlet, straight-through pipe outer wall is provided with rear gum cover, Grouting Pipe afterbody and portable pneumatic afterwards Agitator is connected with the mining mixing-filling system that Pneumatic injection pump for mine is constituted, and ore deposit is provided with portable pneumatic agitator Use sealing of hole PP Pipe Compound, top is located at excessive slurry pipe between preceding fiber pouch and rear fiber pouch through rear fiber pouch.
Its additional technical feature is:Described mining sealing of hole PP Pipe Compound includes the component of following parts by weight:
Water 50-70 parts by weight
Sulphate aluminium cement 15-25 parts by weight
Portland cement 70-80 parts by weight
Aluminum sulfate 1-10 parts by weight
Calcium sulphoaluminate 1-3 parts by weight;
Fibrous material shuffling of the described outside closure pouch by strong fiber and with conducting function is formed, inboard filtering pouch By being formed with elastomeric fibrous material shuffling, inboard filtering pouch and outside closure pouch are added with fire retardant, fire retardant Include the component of following parts by weight:
Aluminium hydroxide 40-60 parts by weight
Deca-BDE 3-5 parts by weight
High muscle value flour 20-30 parts by weight
Water 10-30 parts by weight;
Described outside closure pouch is formed by aramid fiber and carbon fiber shuffling, and inboard filtering pouch is by spandex fibre and polyester fiber Shuffling is formed.
The invention solves the problems that second technical problem be just to provide the user of the fast hard mining hole packer of filter-press type a kind of Method.
To solve above-mentioned second technical problem, the technical solution adopted by the present invention comprises the steps:
The first step is laid
Gas drainage pipe body is stretched into drilling, makes preceding fiber pouch and rear fiber pouch in drilling, Grouting Pipe, overflow slurry pipe Rear portion is outer in drilling, and the high-voltage tube of Pneumatic injection pump for mine is connected with the rear portion of Grouting Pipe;
Second step slip casting
By 50-70 parts by weight water, 15-25 parts by weight sulphate aluminium cement, 70-80 parts by weight Portland cement, 1-10 weights Measure the mining sealing of hole PP Pipe Compound that part aluminum sulfate, 1-3 parts by weight calcium sulphoaluminate constitute and load portable pneumatic agitator, with portable Pneumatic stirring bucket is stirred to mining sealing of hole PP Pipe Compound, is then inputted mining sealing of hole PP Pipe Compound with Pneumatic injection pump for mine and is noted Slurry pipe, straight pipe before mining sealing of hole PP Pipe Compound is reached is released, fiber before being dispersed into preceding gum cover rear and front end by preceding slurry outlet Pouch, straight pipe after mining sealing of hole PP Pipe Compound is reached, is released, fiber after being dispersed into rear gum cover rear and front end by rear slurry outlet Pouch, mining sealing of hole PP Pipe Compound is full of preceding fiber pouch and rear fiber pouch, and preceding fiber pouch and rear fiber pouch expand rapidly, The outer wall of preceding fiber pouch and rear fiber pouch is mutually sealed with coal hole;
3rd step is blocked
After the completion of the outer wall of preceding fiber pouch and rear fiber pouch is mutually sealed with coal hole, between preceding fiber pouch and rear fiber pouch Cavity is formed, mining sealing of hole PP Pipe Compound is inputted Grouting Pipe by continuation Pneumatic injection pump for mine, when the pressure in Grouting Pipe reaches After explosive valve burst pressure, rupture disk is opened, and mining sealing of hole PP Pipe Compound releases preceding fiber pouch and rear fibrous capsule by explosive valve Cavity between bag, mining sealing of hole PP Pipe Compound enters the leakage path of coal inlet and middle fissure zone, closure the wall of a borehole and its surrounding, from It is basic to eliminate drilling gas leakage crack, after after grout curing expansion, it is consolidated with coal body, cavity is with sealing surface formation big structure Body, final to realize thoroughly effective sealing, unnecessary mining sealing of hole PP Pipe Compound is by slurry pipe discharge of overflowing;
4th step gas pumping
Carry out for a long time drawing out methane on a large scale by gas drainage pipe body.
The fast hard mining hole packer of a kind of filter-press type that the present invention is provided by gas drainage pipe body in use, first stretch into brill Hole, makes preceding fiber pouch and rear fiber pouch in drilling, and Grouting Pipe, the excessive rear portion for starching pipe are outer in drilling, and mine pneumatic is noted The high-voltage tube of stock pump is connected with the rear portion of Grouting Pipe.Then mining sealing of hole PP Pipe Compound is loaded into portable pneumatic agitator, used Portable pneumatic agitator is stirred to mining sealing of hole PP Pipe Compound, then with Pneumatic injection pump for mine by mining sealing of hole PP Pipe Compound Grouting Pipe is inputted, straight pipe before mining sealing of hole PP Pipe Compound is reached is released by preceding slurry outlet, is dispersed into preceding gum cover rear and front end Preceding fiber pouch, straight pipe after mining sealing of hole PP Pipe Compound is reached, is released by rear slurry outlet, is dispersed into rear gum cover rear and front end Fiber pouch afterwards, mining sealing of hole PP Pipe Compound is full of preceding fiber pouch and rear fiber pouch, and preceding fiber pouch and rear fiber pouch are fast The outer wall of speed expansion, preceding fiber pouch and rear fiber pouch is mutually sealed with coal hole.Before fiber pouch and after fiber pouch it is outer After the completion of wall is mutually sealed with coal hole, cavity is formed between preceding fiber pouch and rear fiber pouch, continues to use Pneumatic injection pump for mine Mining sealing of hole PP Pipe Compound is inputted into Grouting Pipe, after the pressure in Grouting Pipe reaches explosive valve burst pressure, rupture disk is opened, ore deposit Cavity between preceding fiber pouch and rear fiber pouch is released by explosive valve with sealing of hole PP Pipe Compound, mining sealing of hole PP Pipe Compound enters coal The leakage path of hole and middle fissure zone, closure the wall of a borehole and its surrounding, eliminates drilling gas leakage crack from basic, treats grout curing After expansion, it is consolidated with coal body, cavity is with sealing surface formation big structure body, final realization thoroughly effective sealing is unnecessary Mining sealing of hole PP Pipe Compound by overflow slurry pipe discharge.Closure is finished, and a wide range of long-time extraction is carried out by gas drainage pipe body Gas.
A kind of fast hard mining hole packer of filter-press type that the present invention is provided, is mainly configured with mining mixing-filling system, mining Sealing of hole PP Pipe Compound, fiber pouch.The device utilizes mining mixing-filling system, with certain pressure by the special slurry of mining sealing of hole Hydraulic pressure, which is noted to inside two fiber pouches, realizes the solidification microdilatancy closure of moment at initial stage, then mining sealing of hole PP Pipe Compound slurries pressure injection To between two fiber pouches, reaching inside mash gas pumping drilling air holes section space and surrounding hole wall coalmass crevasse, slurries are in slip casting It under pressure effect, can be cleaved by the fast hard mining hole packer of filter-press type, extend coalmass crevasse in hole wall, increase slurries diffusion model Enclose, penetrated under the effect of big osmotic pressure in coal body microfissure, dendroid distribution is formed, rapidly by between two fiber pouches The closure of coal bed drilling space is tight, after being consolidated after grout curing expansion with coal body, realizes thoroughly effective sealing, improves The utilization rate of gas pumping.The fast hard mining hole packer of this filter-press type, on the one hand can be filled the crack around drilling, The leakage path formed during perforate is eliminated, leakage path at initial stage is eliminated;On the other hand drilling can be made to obtain reliable supporting, it is ensured that The stabilization of drilling, makes no longer to produce new leakage path around drilling, it is to avoid the generation and development of later stage leakage path.This side Method is simple, is adapted to the drilling of various geological conditions.Be particularly suitable for that dip angle of hole is big, on hole sealing depth is deep to or lower sealed to hole Hole.Sealing of hole realizes automation, after the fast hard mining hole packer feeding drilling of filter-press type, need to only start grouting pump and whole bore can be achieved The automatic hole sealing in hole, greatly reduces labor strength, raises labour efficiency.Fiber pouch can be formed to drilling after slip casting Effective support, makes to form the region of high stress around sealing of hole sections drilling, it is to avoid persistently produce crack after sealing of hole, form leakage path. Grouting under pressure pressure is high, the crack that slurries can be made to be pressed into around the wall of a borehole crack, closing drilling, reduces its permeability, plays envelope The effect of stifled leakage path at initial stage.The fast hard mining hole packer length of filter-press type can be adjusted according to underground actual borehole situation. Using fiber pouch injection hole sealing technique, advanced technology, sealing of hole effect is good.
The fast hard mining hole packer of a kind of filter-press type that the present invention is provided, the material of fiber pouch is for strong fiber and with anti- Water, grease proofing, fire-retardant and anlistatig characteristic, can avoid sparking from triggering gas explosion in subsurface environment.Outside blocks pouch It is by with excellent anti-puncture function and very high intensity and the strong fiber of fire resistance such as aramid fiber etc. and with conduction The shufflings such as the fibrous material of function such as carbon fiber are formed, and be disclosure satisfy that the security performances such as underground coal mine fire block articles are antistatic and are prevented The requirement that the coal seam sharp corners produced during only its is drilled are scratched.Outside closure pouch has thixotropy, i.e., in slurries Drill hole inner wall can be close to according to the shape of coal bed drilling under high pressure injection state and be quickly filled with by sealing of hole material, sealing of hole material by Liquid slurry, which is converted to rapidly with the closely knit block of high intensity while carrying out expansion, makes outside closure pouch be bored with wandering coal Hole is realized and combines closely to reach excellent plugging effect, can adapt to because drill bit is radially rocked cause during coal bed drilling Drilling is oval or coal cinder comes off and causes rough environment in hole.Inner side filtering pouch be with elastomeric fibrous material such as The shuffling such as spandex fibre and polyester fiber is formed, the characteristics of dividing rapid with good permeability and mistake filter pulp reclaimed water.In the middle of straight pipe Slurry outlet is provided with, outside is cased with silica gel gum cover, sealing of hole slurries is disperseed from slurry outlet center to two ends, slurries can be made more Rapidly and uniformly it is full of fiber pouch and does not result in the wasting phenomenon that such as a large amount of flood irrigations of oar liquid are formed.Explosive valve is upper Rupture disk equipped with bottle lid-like, tee branch connecting portion is caught in the cylindrical turning-in in rupture disk end when being assembled with explosive valve Position, it is simple and practical and can be applied to underground coal mine particular surroundings requirement.Fiber pouch outer surface two ends are solid with clip Fixed, booster action is played in both sealings to fiber pouch and gas drainage pipe body, and the fiber pouch during slip casting is prevented again The poorly sealed problem that relative movement with the dual anti-pipe of gas drainage under suction is caused.Clip good corrosion resistance and with the strong spy of tightening force Point.When sealed borehole length is longer, the gas drainage pipe between two fiber pouches can be used to threaded connection to adapt to underground envelope Hole length requirement different in size.
The fast hard mining hole packer of a kind of filter-press type that the present invention is provided, the component of use is safety anti-explosive product, equal energy Enough adapt to the severe working environment of underground coal mine.Portable pneumatic agitator does not produce spark using compressed air as power, safety It is explosion-proof, can stepless time adjustment, the rotating speed of motor can be adjusted by the pressure flow of supply, and continuous work can be fully loaded with for a long time, suitable For being worked under the adverse circumstances such as underground humidity.Pneumatic injection pump for mine is that twin-tub acts on piston pump, and Pneumatic injection pump for mine makes With compressed air, can be used safely in big water drenching, high methane occasion, can long-time stall and without heating problem. The pump constitutes closed loop auto-control performance using the working medias such as slurries, gas transmission pressure signal, simple and reliable for structure, from Dynamic stepless regulating is accurate, no On The Problem Of Overpressure.There is the pump changement air pressure to be automatically positioned performance, safe and reliable, have The performance of plasma discharge amount is automatically adjusted according to predetermined grouting pressure, single slurry, dual slurry and chemical pulp can be noted, it is adaptable to underground Worked under the adverse circumstances such as humidity.
A kind of fast hard mining hole packer of filter-press type that the present invention is provided, mining sealing of hole PP Pipe Compound is not dry and cracked, with height flowing Property, high fillibility, rapid solidification, the effect such as efficient expansion can rapidly permeate into borehole circumference crack, in prolonged expansion stress Under therewith fully combine, sealed borehole length can be extended significantly, be adapted to firedamp taking-out discharging drilling concordant hole and strata penetration hole sealing of hole and watt This piezometry sealing of hole, with good sealing of hole sealing effectiveness, its ratio of mud is general in 0.5-0.7/1, and the presetting period is 10- 20min, changes according to the conditions such as underground coal mine temperature specific setting time, and expansion rate is 1.63% or so.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the fast hard mining hole packer of filter-press type of the invention;
Fig. 2 is the sectional view of the fast hard mining hole packer of filter-press type;
Fig. 3 is the structural representation of explosive valve;
Fig. 4 is the vertical structure schematic diagram of fixed cover;
Fig. 5 is the transversary schematic diagram of rear fiber pouch two ends fixed cover;
Fig. 6 is the transversary schematic diagram of preceding fiber pouch rear end fixed cover;
Fig. 7 is the transversary schematic diagram of preceding fiber pouch front end fixed cover.
Embodiment
Below in conjunction with the accompanying drawings with specific embodiment hard mining hole packer fast to a kind of filter-press type of the invention and its application method It is described in further detail.
As shown in figure 1, a kind of fast hard mining hole packer of filter-press type of the invention includes gas drainage pipe body 1, gas drainage under suction The outer wall of pipe body 1 is provided with preceding fiber pouch 2 and rear fiber pouch 3, and the Grouting Pipe 4 of fiber pouch 2 is passed through before top is stretched into Be provided with explosive valve 5 in fiber pouch 3 afterwards, the Grouting Pipe 4 between preceding fiber pouch 2 and rear fiber pouch 3, the afterbody of Grouting Pipe 4 with The mining mixing-filling system that portable pneumatic agitator 6 is constituted with Pneumatic injection pump for mine 7 is connected, portable pneumatic stirring Mining sealing of hole PP Pipe Compound 8 is provided with bucket 6, top is after the excessive slurry pipe 9 between preceding fiber pouch 2 and rear fiber pouch 3 is passed through Fiber pouch 3.
As shown in Fig. 2 the outer wall of gas drainage pipe body 1 is provided with preceding fiber pouch 2 and rear fiber pouch 3, preceding fiber Pouch 2 and rear fiber pouch 3 are made up of inboard filtering pouch 10 and outside closure pouch 11, preceding fiber pouch 2 and rear fibrous capsule The two ends of bag 3 are respectively arranged with fluted 12 fixed cover 13, are provided with fastening clamp 14 at groove 12, preceding fibre is stretched at top The Grouting Pipe 4 of dimension pouch 2 passes through the top of Grouting Pipe 4 in rear fiber pouch 3, preceding fiber pouch 2 to be provided with and is provided with preceding slurry outlet 15 preceding straight pipe 16, the preceding outer wall of straight pipe 16 is provided with preceding gum cover 17, and the top of preceding straight pipe 16 is provided with closure plate 18, preceding fiber The note in the explosive valve 5 with rupture disk 19, rear fiber pouch 3 is provided with Grouting Pipe 4 between pouch 2 and rear fiber pouch 3 The rear straight pipe 21 for being provided with rear slurry outlet 20 is provided with slurry pipe 4, the rear outer wall of straight pipe 21 is provided with rear gum cover 22, before top is located at Excessive slurry pipe 9 between fiber pouch 2 and rear fiber pouch 3 passes through rear fiber pouch 3.
As shown in figure 3, explosive valve 5 carries rupture disk 19, rupture disk 19 is bottle cap shape, and the top of explosive valve 5 is provided with connection Connecting groove 23 is caught in groove 23, the cylindrical turning-in in the end of rupture disk 19.
As shown in figure 4, fixed cover 13 is with fluted 12.
As shown in figure 5, rear fiber pouch two ends fixed cover 13 is provided with gas drainage pipe body through hole 24, slip casting pipe through-hole 25th, overflow slurry pipe through-hole 26.
As shown in fig. 6, preceding fiber pouch rear end fixed cover 13 is provided with gas drainage pipe body through hole 24, slip casting pipe through-hole 25。
As shown in fig. 7, preceding fiber pouch front end fixed cover 13 is provided with gas drainage pipe body through hole 24.
Embodiment 1
A kind of application method of the fast hard mining hole packer of filter-press type of the present invention comprises the steps:
The first step is laid
Gas drainage pipe body 1 is stretched into drilling, makes preceding fiber pouch 2 and rear fiber pouch 3 in drilling, Grouting Pipe 4, excessive slurry The rear portion of pipe 9 is outer in drilling, and the high-voltage tube of Pneumatic injection pump for mine 7 is connected with the rear portion of Grouting Pipe 4;
Second step slip casting
By 50 parts by weight water, 15 parts by weight sulphate aluminium cements, 70 parts by weight Portland cements, 1 parts sulfuric acid aluminium, 1 The mining sealing of hole PP Pipe Compound 8 that parts by weight calcium sulphoaluminate is constituted loads portable pneumatic agitator 6, with portable pneumatic agitator 6 Mining sealing of hole PP Pipe Compound 8 is stirred, mining sealing of hole PP Pipe Compound 8 is then inputted into Grouting Pipe 4 with Pneumatic injection pump for mine 7, Mining sealing of hole PP Pipe Compound 8 reaches preceding straight pipe 16, is released by preceding slurry outlet 15, fine before being dispersed into the preceding rear and front end of gum cover 17 Pouch 2 is tieed up, straight pipe 21 after mining sealing of hole PP Pipe Compound 8 is reached is released by rear slurry outlet 20, scattered in the rear rear and front end of gum cover 22 Into rear fiber pouch 3, mining sealing of hole PP Pipe Compound 8 is full of preceding fiber pouch 2 and rear fiber pouch 3, preceding fiber pouch 2 and rear fibre Tie up pouch 3 to expand rapidly, the outer wall of preceding fiber pouch 2 and rear fiber pouch 3 is mutually sealed with coal hole;
3rd step is blocked
After the completion of the outer wall of preceding fiber pouch 2 and rear fiber pouch 3 is mutually sealed with coal hole, preceding fiber pouch 3 and rear fiber pouch 3 Between form cavity, mining sealing of hole PP Pipe Compound 8 is inputted Grouting Pipe 4 by continuation Pneumatic injection pump for mine 7, when in Grouting Pipe 4 Pressure reaches after the burst pressure of explosive valve 5 that rupture disk 19 is opened, and mining sealing of hole PP Pipe Compound 8 releases preceding fibrous capsule by explosive valve 5 Cavity between bag 2 and rear fiber pouch 3, mining sealing of hole PP Pipe Compound 8 enters coal inlet and middle fissure zone, closure the wall of a borehole and its week The leakage path enclosed, eliminates drilling gas leakage crack from basic, after after grout curing expansion, is consolidated with coal body, cavity is same Sealing surface formation big structure body, final to realize thoroughly effective sealing, unnecessary mining sealing of hole PP Pipe Compound 8 is discharged by the slurry pipe 9 that overflows;
4th step gas pumping
Carry out for a long time drawing out methane on a large scale by gas drainage pipe body 1.
Embodiment 2
A kind of application method of the fast hard mining hole packer of filter-press type of the present invention comprises the steps:
The first step is laid
Gas drainage pipe body 1 is stretched into drilling, makes preceding fiber pouch 2 and rear fiber pouch 3 in drilling, Grouting Pipe 4, excessive slurry The rear portion of pipe 9 is outer in drilling, and the high-voltage tube of Pneumatic injection pump for mine 7 is connected with the rear portion of Grouting Pipe 4;
Second step slip casting
By 60 parts by weight water, 20 parts by weight sulphate aluminium cements, 75 parts by weight Portland cements, 5.5 parts sulfuric acid aluminium, The mining sealing of hole PP Pipe Compound 8 that 2 parts by weight calcium sulphoaluminates are constituted loads portable pneumatic agitator 6, with portable pneumatic agitator 6 Mining sealing of hole PP Pipe Compound 8 is stirred, mining sealing of hole PP Pipe Compound 8 is then inputted into Grouting Pipe 4 with Pneumatic injection pump for mine 7, Mining sealing of hole PP Pipe Compound 8 reaches preceding straight pipe 16, is released by preceding slurry outlet 15, fine before being dispersed into the preceding rear and front end of gum cover 17 Pouch 2 is tieed up, straight pipe 21 after mining sealing of hole PP Pipe Compound 8 is reached is released by rear slurry outlet 20, scattered in the rear rear and front end of gum cover 22 Into rear fiber pouch 3, mining sealing of hole PP Pipe Compound 8 is full of preceding fiber pouch 2 and rear fiber pouch 3, preceding fiber pouch 2 and rear fibre Tie up pouch 3 to expand rapidly, the outer wall of preceding fiber pouch 2 and rear fiber pouch 3 is mutually sealed with coal hole;
3rd step is blocked
After the completion of the outer wall of preceding fiber pouch 2 and rear fiber pouch 3 is mutually sealed with coal hole, preceding fiber pouch 3 and rear fiber pouch 3 Between form cavity, mining sealing of hole PP Pipe Compound 8 is inputted Grouting Pipe 4 by continuation Pneumatic injection pump for mine 7, when in Grouting Pipe 4 Pressure reaches after the burst pressure of explosive valve 5 that rupture disk 19 is opened, and mining sealing of hole PP Pipe Compound 8 releases preceding fibrous capsule by explosive valve 5 Cavity between bag 2 and rear fiber pouch 3, mining sealing of hole PP Pipe Compound 8 enters coal inlet and middle fissure zone, closure the wall of a borehole and its week The leakage path enclosed, eliminates drilling gas leakage crack from basic, after after grout curing expansion, is consolidated with coal body, cavity is same Sealing surface formation big structure body, final to realize thoroughly effective sealing, unnecessary mining sealing of hole PP Pipe Compound 8 is discharged by the slurry pipe 9 that overflows;
4th step gas pumping
Carry out for a long time drawing out methane on a large scale by gas drainage pipe body 1.
Embodiment 3
A kind of application method of the fast hard mining hole packer of filter-press type of the present invention comprises the steps:
The first step is laid
Gas drainage pipe body 1 is stretched into drilling, makes preceding fiber pouch 2 and rear fiber pouch 3 in drilling, Grouting Pipe 4, excessive slurry The rear portion of pipe 9 is outer in drilling, and the high-voltage tube of Pneumatic injection pump for mine 7 is connected with the rear portion of Grouting Pipe 4;
Second step slip casting
By 70 parts by weight water, 25 parts by weight sulphate aluminium cements, 80 parts by weight Portland cements, 10 parts sulfuric acid aluminium, 3 The mining sealing of hole PP Pipe Compound 8 that parts by weight calcium sulphoaluminate is constituted loads portable pneumatic agitator 6, with portable pneumatic agitator 6 Mining sealing of hole PP Pipe Compound 8 is stirred, mining sealing of hole PP Pipe Compound 8 is then inputted into Grouting Pipe 4 with Pneumatic injection pump for mine 7, Mining sealing of hole PP Pipe Compound 8 reaches preceding straight pipe 16, is released by preceding slurry outlet 15, fine before being dispersed into the preceding rear and front end of gum cover 17 Pouch 2 is tieed up, straight pipe 21 after mining sealing of hole PP Pipe Compound 8 is reached is released by rear slurry outlet 20, scattered in the rear rear and front end of gum cover 22 Into rear fiber pouch 3, mining sealing of hole PP Pipe Compound 8 is full of preceding fiber pouch 2 and rear fiber pouch 3, preceding fiber pouch 2 and rear fibre Tie up pouch 3 to expand rapidly, the outer wall of preceding fiber pouch 2 and rear fiber pouch 3 is mutually sealed with coal hole;
3rd step is blocked
After the completion of the outer wall of preceding fiber pouch 2 and rear fiber pouch 3 is mutually sealed with coal hole, preceding fiber pouch 3 and rear fiber pouch 3 Between form cavity, mining sealing of hole PP Pipe Compound 8 is inputted Grouting Pipe 4 by continuation Pneumatic injection pump for mine 7, when in Grouting Pipe 4 Pressure reaches after the burst pressure of explosive valve 5 that rupture disk 19 is opened, and mining sealing of hole PP Pipe Compound 8 releases preceding fibrous capsule by explosive valve 5 Cavity between bag 2 and rear fiber pouch 3, mining sealing of hole PP Pipe Compound 8 enters coal inlet and middle fissure zone, closure the wall of a borehole and its week The leakage path enclosed, eliminates drilling gas leakage crack from basic, after after grout curing expansion, is consolidated with coal body, cavity is same Sealing surface formation big structure body, final to realize thoroughly effective sealing, unnecessary mining sealing of hole PP Pipe Compound 8 is discharged by the slurry pipe 9 that overflows;
4th step gas pumping
Carry out for a long time drawing out methane on a large scale by gas drainage pipe body 1.
The fast hard mining hole packer of a kind of filter-press type that the present invention is provided, is mainly configured with portable pneumatic agitator 6 and ore deposit Mining mixing-filling system, mining sealing of hole PP Pipe Compound 8, fine preceding fiber pouch 2 and the rear fiber pouch constituted with Pneumatic grouting pump 7 3.The mining mixing-filling system that the device is constituted using portable pneumatic agitator 6 and Pneumatic injection pump for mine 7, with certain Pressure will realize that the solidification of moment at initial stage is micro- inside the mining slurries pressure injection of sealing of hole PP Pipe Compound 8 to preceding fiber pouch 2 and rear fiber pouch 3 Expansion plugging, then the mining slurries pressure injection of sealing of hole PP Pipe Compound 8 reach gas pumping between preceding fiber pouch 2 and rear fiber pouch 3 Inside the air holes that drills section space and surrounding hole wall coalmass crevasse, slurries are fast hard mining by filter-press type under grouting pressure effect Hole packer can be cleaved, extend coalmass crevasse in hole wall, increase grout mixing, and coal body is penetrated under the effect of big osmotic pressure In microfissure, dendroid distribution is formed, rapidly the coal bed drilling space between preceding fiber pouch 2 and rear fiber pouch 3 is blocked Tightly, after being consolidated after grout curing expansion with coal body, thoroughly effective sealing is realized, the utilization of gas pumping is improved Rate.
The material of a kind of fast hard mining hole packer of filter-press type that the present invention is provided, preceding fiber pouch 2 and rear fiber pouch 3 is Strong fiber simultaneously has Water-proof and oil-proof, fire-retardant and anlistatig characteristic, and sparking can be avoided to trigger gas quick-fried in subsurface environment It is fried.Outside closure pouch 11 be by with excellent anti-puncture function and very high intensity and the strong fiber of fire resistance such as Aramid fiber etc. and the shuffling such as fibrous material such as carbon fiber with conducting function are formed, and disclosure satisfy that underground coal mine fire block articles resist quiet The security performances such as electricity and the requirement for preventing the coal seam sharp corners produced during its is drilled from scratching.Outside closure pouch 11 has There is thixotropy, i.e., can be close to drill hole inner wall according to the shape of coal bed drilling under slurries high pressure injection state and by mining envelope Hole PP Pipe Compound 8 is quickly filled with, and mining sealing of hole PP Pipe Compound 8 is converted to rapidly with the closely knit block of high intensity while entering by liquid slurry Row expansion makes outside closure pouch 11 and wandering coal drilling realize and combine closely to reach excellent plugging effect, Neng Goushi Answer during coal bed drilling causes that drilling is oval or coal cinder comes off and causes rough environment in hole because drill bit is radially rocked. Inner side filtering pouch 10 is forms with shufflings such as elastomeric fibrous material such as spandex fibres and polyester fiber, with gas permeability Get well and cross the characteristics of filter pulp reclaimed water point is rapid.Preceding straight pipe 16 is provided with preceding slurry outlet 15, and the preceding outer wall of straight pipe 16 is provided with preceding gum cover 17, rear straight pipe 21 is provided with rear slurry outlet 20, and the rear outer wall of straight pipe 21 is provided with rear gum cover 22, so makes mining sealing of hole PP Pipe Compound 8 From preceding slurry outlet 15, the center of rear slurry outlet 20, gum cover 17, the two ends of rear gum cover 22 disperse slurries forward, can make mining sealing of hole PP Pipe Compound 8 slurries more rapidly and uniformly full of preceding fiber pouch 2 and rear fiber pouch 3 and do not result in such as mining sealing of hole PP Pipe Compound The wasting phenomenon that the 8 a large amount of flood irrigations of oar liquid are formed.Explosive valve 5 is the upper rupture disk 19 equipped with bottle lid-like, is filled with explosive valve 5 Tee branch connecting portion is caught in the cylindrical turning-in in the end of timing rupture disk 19, simple and practical and can be applied to coal Particular surroundings requirement under mine.Preceding fiber pouch 2 and the outer surface two ends fastening clamp 14 of rear fiber pouch 3 are fixed, both to preceding Booster action is played in fiber pouch 2 and rear fiber pouch 3 and the sealing of gas drainage pipe body 1, is prevented again during slip casting The poorly sealed problem that the relative movement of preceding fiber pouch 2 and rear fiber pouch 3 and gas drainage pipe body 1 is caused.Fastener Bind round 14 good corrosion resistances and there is the characteristics of tightening force is strong., can be by preceding fiber pouch 2 and rear fibrous capsule when sealed borehole length is longer Gas drainage pipe body 1 between bag 3 uses threaded connection to adapt to the requirement that underground sealed borehole length is different in size.
The fast hard mining hole packer of a kind of filter-press type that the present invention is provided, the component of use is safety anti-explosive product, equal energy Enough adapt to the severe working environment of underground coal mine.Portable pneumatic agitator 6 does not produce spark using compressed air as power, peace It is complete explosion-proof, can stepless time adjustment, the rotating speed of motor can be adjusted by the pressure flow of supply, can be fully loaded with and continuously work for a long time, Suitable for being worked under the adverse circumstances such as underground humidity.Pneumatic injection pump for mine 7 is that twin-tub acts on piston pump, Pneumatic injection pump for mine 7 use compressed air, can big water drenching, high methane occasion use safely, can long-time stall and asked without heating Topic.The pump constitutes closed loop auto-control performance using the working medias such as slurries, gas transmission pressure signal, simple and reliable for structure, Automatic stepless regulating is accurate, no On The Problem Of Overpressure.There is the pump changement air pressure to be automatically positioned performance, safe and reliable, tool There is the performance that plasma discharge amount is automatically adjusted according to predetermined grouting pressure, single slurry, dual slurry and chemical pulp can be noted, it is adaptable to well Worked under the adverse circumstances such as lower humidity.
A kind of fast hard mining hole packer of filter-press type that the present invention is provided, mining sealing of hole PP Pipe Compound 8 is not dry and cracked, with height flowing Property, high fillibility, rapid solidification, the effect such as efficient expansion can rapidly permeate into borehole circumference crack, in prolonged expansion stress Under therewith fully combine, sealed borehole length can be extended significantly, be adapted to firedamp taking-out discharging drilling concordant hole and strata penetration hole sealing of hole and watt This piezometry sealing of hole, with good sealing of hole sealing effectiveness, its ratio of mud is general in 0.5-0.7/1, and the presetting period is 10- 20min, changes according to the conditions such as underground coal mine temperature specific setting time, and expansion rate is 1.63% or so.
The fast hard mining hole packer of a kind of filter-press type that the present invention is provided, inboard filtering pouch 10 and outside closure pouch 11 add Added with fire retardant, security is improved.Flame retardant compositions are 40 parts by weight aluminium hydroxides, 3 parts by weight deca-BDEs, 20 parts by weight High muscle value flour, 10 parts by weight water;Or flame retardant compositions are 50 parts by weight aluminium hydroxides, 4 parts by weight deca-BDEs, 25 weight The high muscle value flour of part, 20 parts by weight water;Or flame retardant compositions are 60 parts by weight aluminium hydroxides, 5 parts by weight deca-BDEs, 30 weights Measure the high muscle value flour of part, 30 parts by weight water.
A kind of fast hard mining hole packer of filter-press type and its application method that the present invention is provided are not limited only to above-mentioned form, the above Described is only presently preferred embodiments of the present invention, is not intended to limit the invention, all in the spirit and principles in the present invention etc Any modifications, equivalent substitutions and improvements made etc., should be included in the scope of the protection.

Claims (5)

1. a kind of fast hard mining hole packer of filter-press type, including gas drainage pipe body, it is characterised in that:The gas drainage pipe pipe The outer wall of body is provided with the preceding fiber pouch and rear fiber pouch being made up of inboard filtering pouch and outside closure pouch, preceding fiber The two ends of pouch and rear fiber pouch are respectively arranged with reeded fixed cover, and groove is provided with fastening clamp, and top is stretched The Grouting Pipe for entering preceding fiber pouch passes through rear fiber pouch, is provided with the top of Grouting Pipe in preceding fiber pouch and is provided with preceding slurry outlet Preceding straight pipe, preceding straight-through pipe outer wall is provided with preceding gum cover, is provided with closure plate, preceding fiber pouch and rear fiber at the top of preceding straight pipe It is provided with after being provided with to go out in the Grouting Pipe being provided with Grouting Pipe between pouch in the explosive valve with rupture disk, rear fiber pouch The rear straight pipe in hole is starched, straight-through pipe outer wall is provided with rear gum cover, Grouting Pipe afterbody and portable pneumatic agitator and mine pneumatic afterwards The mining mixing-filling system that grouting pump is constituted is connected, and mining sealing of hole PP Pipe Compound is provided with portable pneumatic agitator, pushes up Portion is located at excessive slurry pipe between preceding fiber pouch and rear fiber pouch through rear fiber pouch.
2. a kind of fast hard mining hole packer of filter-press type according to claim 1, it is characterised in that:Described mining sealing of hole is special Materials include the component of following parts by weight:
Water 50-70 parts by weight
Sulphate aluminium cement 15-25 parts by weight
Portland cement 70-80 parts by weight
Aluminum sulfate 1-10 parts by weight
Calcium sulphoaluminate 1-3 parts by weight.
3. a kind of fast hard mining hole packer of filter-press type according to claim 1, it is characterised in that:Described outside Plugging brusa Fibrous material shuffling of the bag by strong fiber and with conducting function is formed, and inboard filtering pouch is by with elastomeric undulation degree Material shuffling is formed, and inboard filtering pouch and outside closure pouch are added with fire retardant, and fire retardant includes the component of following parts by weight:
Aluminium hydroxide 40-60 parts by weight
Deca-BDE 3-5 parts by weight
High muscle value flour 20-30 parts by weight
Water 10-30 parts by weight.
4. a kind of fast hard mining hole packer of filter-press type according to claim 3, it is characterised in that:Described outside Plugging brusa Bag is formed by aramid fiber and carbon fiber shuffling, and inboard filtering pouch is formed by spandex fibre and polyester fiber shuffling.
5. a kind of application method of the fast hard mining hole packer of filter-press type described in claim 1,2,3 or 4 any one, its feature exists In comprising the steps:
The first step is laid
Gas drainage pipe body is stretched into drilling, makes preceding fiber pouch and rear fiber pouch in drilling, Grouting Pipe, overflow slurry pipe Rear portion is outer in drilling, and the high-voltage tube of Pneumatic injection pump for mine is connected with the rear portion of Grouting Pipe;
Second step slip casting
By 50-70 parts by weight water, 15-25 parts by weight sulphate aluminium cement, 70-80 parts by weight Portland cement, 1-10 weights Measure the mining sealing of hole PP Pipe Compound that part aluminum sulfate, 1-3 parts by weight calcium sulphoaluminate constitute and load portable pneumatic agitator, with portable Pneumatic stirring bucket is stirred to mining sealing of hole PP Pipe Compound, is then inputted mining sealing of hole PP Pipe Compound with Pneumatic injection pump for mine and is noted Slurry pipe, straight pipe before mining sealing of hole PP Pipe Compound is reached is released, fiber before being dispersed into preceding gum cover rear and front end by preceding slurry outlet Pouch, straight pipe after mining sealing of hole PP Pipe Compound is reached, is released, fiber after being dispersed into rear gum cover rear and front end by rear slurry outlet Pouch, mining sealing of hole PP Pipe Compound is full of preceding fiber pouch and rear fiber pouch, and preceding fiber pouch and rear fiber pouch expand rapidly, The outer wall of preceding fiber pouch and rear fiber pouch is mutually sealed with coal hole;
3rd step is blocked
After the completion of the outer wall of preceding fiber pouch and rear fiber pouch is mutually sealed with coal hole, between preceding fiber pouch and rear fiber pouch Cavity is formed, mining sealing of hole PP Pipe Compound is inputted Grouting Pipe by continuation Pneumatic injection pump for mine, when the pressure in Grouting Pipe reaches After explosive valve burst pressure, rupture disk is opened, and mining sealing of hole PP Pipe Compound releases preceding fiber pouch and rear fibrous capsule by explosive valve Cavity between bag, mining sealing of hole PP Pipe Compound enters the leakage path of coal inlet and middle fissure zone, closure the wall of a borehole and its surrounding, from It is basic to eliminate drilling gas leakage crack, after after grout curing expansion, it is consolidated with coal body, cavity is with sealing surface formation big structure Body, final to realize thoroughly effective sealing, unnecessary mining sealing of hole PP Pipe Compound is by slurry pipe discharge of overflowing;
4th step gas pumping
Carry out for a long time drawing out methane on a large scale by gas drainage pipe body.
CN201710322982.XA 2017-05-09 2017-05-09 A kind of fast hard mining hole packer of filter-press type and its application method Withdrawn CN107100583A (en)

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CN109372462A (en) * 2018-12-11 2019-02-22 阳泉惠通机械制造有限公司 A kind of capsule hole
CN110260740A (en) * 2019-06-12 2019-09-20 黑龙江科技大学 A kind of mining borehole high-efficient homogeneous aggregate cladding sealing material
CN110284849A (en) * 2019-07-30 2019-09-27 重庆市能源投资集团科技有限责任公司 A kind of hole sealing device and method for sealing with pressure for the nearly horizontal fractures drilling of coal mine
CN110608012A (en) * 2019-08-30 2019-12-24 贵州大学 Gas hole packer with pressure relief function
CN110645479A (en) * 2019-10-11 2020-01-03 云南大红山管道有限公司 Slurry pipeline with double automatic pressure relief protection devices and pressure relief method thereof
CN110685638A (en) * 2019-11-07 2020-01-14 周春雷 New two-plug one-injection hole packer
CN112360385A (en) * 2020-12-29 2021-02-12 山西工程技术学院 Hydraulic telescopic support type hole sealing device used after coal mine inclined large-diameter drilling and extraction
CN112523717A (en) * 2020-11-26 2021-03-19 宿州市金鼎安全技术股份有限公司 Multifunctional multiplexing sealing device
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
CN114320220A (en) * 2022-01-19 2022-04-12 河南理工大学 CO2Construction method for repairing extracted borehole fracture by combining foam and self-repairing slurry
CN115288633A (en) * 2022-08-18 2022-11-04 山西潞安环保能源开发股份有限公司 Filter-pressing type quick-hardening hole packer for mine and use method thereof

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CN107780873A (en) * 2017-10-23 2018-03-09 山西潞安矿业(集团)有限责任公司 The three-stage capsule sealing device and its encapsulating method of a kind of mash gas pumping drilling
CN107780873B (en) * 2017-10-23 2023-11-28 山西潞安矿业(集团)有限责任公司 Three-section type capsule sealing device for gas extraction drilling and sealing method thereof
CN109372462A (en) * 2018-12-11 2019-02-22 阳泉惠通机械制造有限公司 A kind of capsule hole
CN110260740A (en) * 2019-06-12 2019-09-20 黑龙江科技大学 A kind of mining borehole high-efficient homogeneous aggregate cladding sealing material
CN110284849A (en) * 2019-07-30 2019-09-27 重庆市能源投资集团科技有限责任公司 A kind of hole sealing device and method for sealing with pressure for the nearly horizontal fractures drilling of coal mine
CN110608012B (en) * 2019-08-30 2021-11-12 贵州大学 Gas hole packer with pressure relief function
CN110608012A (en) * 2019-08-30 2019-12-24 贵州大学 Gas hole packer with pressure relief function
CN110645479A (en) * 2019-10-11 2020-01-03 云南大红山管道有限公司 Slurry pipeline with double automatic pressure relief protection devices and pressure relief method thereof
CN110685638A (en) * 2019-11-07 2020-01-14 周春雷 New two-plug one-injection hole packer
CN112523717A (en) * 2020-11-26 2021-03-19 宿州市金鼎安全技术股份有限公司 Multifunctional multiplexing sealing device
CN112360385A (en) * 2020-12-29 2021-02-12 山西工程技术学院 Hydraulic telescopic support type hole sealing device used after coal mine inclined large-diameter drilling and extraction
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
CN114320220A (en) * 2022-01-19 2022-04-12 河南理工大学 CO2Construction method for repairing extracted borehole fracture by combining foam and self-repairing slurry
CN115288633A (en) * 2022-08-18 2022-11-04 山西潞安环保能源开发股份有限公司 Filter-pressing type quick-hardening hole packer for mine and use method thereof

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Application publication date: 20170829