CN107989571A - One kind wears three pouch plugging device of formula and its application method - Google Patents

One kind wears three pouch plugging device of formula and its application method Download PDF

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Publication number
CN107989571A
CN107989571A CN201711294128.3A CN201711294128A CN107989571A CN 107989571 A CN107989571 A CN 107989571A CN 201711294128 A CN201711294128 A CN 201711294128A CN 107989571 A CN107989571 A CN 107989571A
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CN
China
Prior art keywords
pipe
pouches
pouch
hole
crack
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Granted
Application number
CN201711294128.3A
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Chinese (zh)
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CN107989571B (en
Inventor
孙玉宁
孙志东
王志明
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Henan Polytechnic University
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Henan Polytechnic University
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Priority to CN201711294128.3A priority Critical patent/CN107989571B/en
Publication of CN107989571A publication Critical patent/CN107989571A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP 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
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices, or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH 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

Abstract

The invention discloses one kind to wear three pouch plugging device of formula and its application method,One kind, which wears three pouch plugging device of formula, includes No.1 pouch,No. two pouches,No. three pouches,Hole-sealing grouting pipe,Crack closure pipe,Lead slurry pipe,Wherein three pouches are formed by the sewing of elastic cloth set,And it is set on successively on gas pumping pipe,Hole-sealing grouting pipe is each passed through three pouches,Grouting port is provided with hole-sealing grouting pipe in pouch,And slurry pipe is led through the interior ducted body of No. two pouches,By its both sides connection slip casting section connection,Crack blocks pipe through the interior ducted body of No.1 pouch,The end of crack closure pipe is at the sewing line outside No. two pouches,The present invention discloses a kind of application method for wearing three pouch plugging device of formula,The present invention can realize " three stifled two notes " sealing of hole by a pressure-sensitive overflow valve,At the same time,The further closure of hole week gap region can be realized after sealing of hole,So as to realize " three stifled three notes " formula sealing of hole of gas pumping on the whole.

Description

One kind wears three pouch plugging device of formula and its application method
Technical field
The invention belongs to coal mine gas drainage sealing of hole field, more particularly to one kind to wear three pouch plugging device of formula and its use Method.
Background technology
Coal bed gas extraction is the essential measure that mine administers gas, and borehole sealing is not tight, drilling gas leakage is to cause colliery An important factor for gas pumping efficiency is low, and then have impact on the overall security of mine and the utilization of mine mash gas extraction.Coal The hole sealing technology of layer drilling is the key technique of gas pumping, and common hole sealing technology has using polyurethane, cement mortar For " a two stifled notes " formula method for sealing, polyurethane sealing of hole method, the hole packer method for sealing of material.Wherein existing hole packer envelope Hole and its application method include:Bag type paste hole sealing device and its method for sealing(ZL 2007 1 0054384.5), gas pumping two Sub-high pressure injection hole sealing device and its method for sealing(ZL 2009 1 0064186.6), the slip casting of gas extraction center shunting envelope Aperture apparatus and method for sealing(ZL 2011 1 0120920.3), the fixed plugging device of gas pumping and its application method(ZL 2013 1 0402234.4)And gas pumping wears formula plugging device and its application method(ZL 2013 1 0405906.7)Deng, Above-mentioned several method for sealing are that pouch is fixed on gas drainage pipe, during using above method for sealing, sealing of hole segment length Immobilize, it is difficult to adjust, and can normally only realize " a two stifled notes " or " three stifled two notes ", the i.e. " N of whole realization drilling + 1 is stifled, N notes " pattern.
The content of the invention
Present invention aims at provide one kind to wear three pouch plugging device of formula and its knot of application method, wherein plugging device Structure is simple, is easily installed operation, it is possible to achieve the adjusting of sealing of hole segment length while realizes " three stifled three notes " formula borehole sealing.
The present invention is that technical solution is used by solving its technical problem:
One kind wears three pouch plugging device of formula, including No.1 pouch(1), two pouches(2), No. three pouches(3), hole-sealing grouting pipe (4), crack closure pipe(5), lead slurry pipe(13);The No.1 pouch(1), No. two pouches(2), No. three pouches(3)Material It is identical, structure is identical, respective length can be adjusted according to sealed borehole length, the hole-sealing grouting pipe(4)Moulded using three-stage Expects pipe connects the pipeline to form a perforation, and every section of plastic tube is each passed through No.1 pouch(1), No. two pouches(2), No. three pouches (3)Inside, and the major diameter fast joint installed by every section of plastic tube left end(6)Head and the tail connection is carried out so as to be noted as sealing of hole Slurry pipe(4), the length of every section of plastic tube can be adjusted according to the length for the pouch that it is passed through, and the middle part of every section of plastic tube is equal Equipped with grouting port, the grouting port, which is located on the inside of pouch and grouting port, installs check valve(10), in No. two pouches Plastic tube, its right side are installed on unidirectional pressure-sensitive overflow valve by the position of proximal end(11), the plastic tube in No. three pouches, its Right-hand end installs a plug(9);The crack closure pipe(5)Hole-sealing grouting pipe is less than using caliber(4)Caliber Pipe with small pipe diameter plastic tube, the crack closure pipe(5)Initiating terminal install minor diameter fast joint(7), the crack closure pipe(5)'s Leading portion passes through No.1 pouch, and section positioned at the outside of No. two pouches and is close to the hole-sealing grouting pipe progress being located in No. two pouches thereafter Arrangement, so that crack closure pipe(5)Crack liquid for plugging grout outlet(18)Positioned at the outside of No. two pouches;It is described to lead slurry pipe (13)Through No. two pouches, its length is more than the length of No. two pouches vertically so that leads slurry pipe(13)Both ends be respectively positioned on two The outside of number pouch, it is described to lead slurry pipe(13)Effect be, by the second slip casting section(15)Interior slurries import the first slip casting section (14).
Further, the No.1 pouch(1), two pouches(2)With No. three pouches(3)By outer layer elasticity cloth set(21)It is and interior The elastic cloth set of layer(22)The enclosure space formed is sewed, outer layer elasticity cloth set inner side close contact is additionally provided with one layer of band logical The rubber sleeve of stomata(23), the internal layer elasticity cloth set(22)One interior ducted body is formed with inner space(20), it is described it is interior in Hollow body(20)Axis it is parallel with the axis of inside and outside two layers elastic cloth set, the outer layer elasticity cloth set(21)With internal layer elasticity cloth set (22)The permeable impermeable slurry of material, the hole-sealing grouting pipe clamp is between the rubber sleeve 23 and the internal layer elasticity cloth set Position, the crack closure pipe(5)Leading portion passed through from the interior ducted body of No.1 pouch, it is described lead slurry pipe out of No. two pouches Ducted body passes through.
Further, the hole-sealing grouting pipe(4)Pass through steel loop(8)With No.1 pouch(1), two pouches(2), No. three pouches (3)It is fixedly connected, the steel loop shares six and is separately fixed at the top position in each pouch both ends;
Further, the crack closure pipe(5)Space from end installs two tubular iron sets spaced apart(17), two iron sets Between crack closure pipe(5)Tube wall on have the less outlet of several sizes, be crack liquid for plugging grout outlet(18), No. two pouches(2)Neighbouring crack closure pipe(5)On install pachydermia set(16).
Further, No. two pouch external margins position is provided with sewing line(12), the sewing line(12)Just No. two pouches(2)Axisymmetrical be disposed with two, and close to hole-sealing grouting pipe(4)That sewing line and the liquid for plugging Grout outlet(18)Locus overlap, the sewing line is U-shaped or V-type.
A kind of application method for wearing three pouch plugging device of formula, it is characterised in that wear three capsule of formula using above-mentioned one kind Bag plugging device, carries out in accordance with the following steps:
Step 1, by gas drainage pipe(19)The interior ducted body of No. two pouches and No. three pouches is each passed through, so that by No. two capsules Bag is sleeved on gas drainage pipe with No. three pouches(19)On, connect soon by major diameter(6)Connection is positioned at No. two pouches and No. three pouches Then the both ends of No. two pouches and No. three pouches are lashed to gas drainage pipe by interior plastic tube(19)On;
Step 2, by gas drainage pipe(19)Through the interior ducted body of No.1 pouch, so that No.1 pouch is sleeved on gas drainage under suction Pipe(19)On, while crack is blocked and is managed(5)Through the interior ducted body of No.1 pouch, and crack is blocked and is managed(5)Terminal part It is fixed in No. two pouches close to Grouting Pipe(4)Sewing line(12)Place, is connect soon by major diameter(6)Connection is located at No.1 pouch With the plastic tube in No. two pouches, then crack is blocked by the rope made of hemp and is managed(5)With the hole-sealing grouting pipe outside pouch(4)It is fixed on Together;
Step 3, is put into extraction borehole mouth by the three pouch plugging device of formula that wears connected, passes through major diameter fast joint(6), will External hole-sealing grouting pipe and hole-sealing grouting pipe(4)Connection, passes through minor diameter fast joint(7), external crack is blocked into pipe and crack Closure pipe(5)Connection;
Step 4, according to the hole sealing depth of setting, connects gas drainage pipe, and the three pouch plugging device of formula that wears connected is sent into Drill designated position, meanwhile, the external hole-sealing grouting pipe of certain length and external crack closure pipe are sent into drilling in the lump;
Step 5, the construction of gas pumping sealing of hole:External hole-sealing grouting pipe is connected with grouting pump, by grouting pump, by injection slurry Via respective check valve in three pouches(10)Inject No.1 pouch at the same time(1), No. two pouches(2), No. three pouches(3);When After pouch is filled by slurries, the first slip casting section is formed between No.1 pouch and No. two pouches(14), in No. two pouches and No. three The second slip casting section is formed between pouch(15);When the slurries in No. two pouches reach certain pressure, unidirectional pressure-sensitive overflow valve (11)Open, slurries enter the second slip casting section(15), when the second slip casting section(15)Interior slurries liquid level reaches diversion pipe (13)Height when, the second slip casting section(15)Interior slurries are via diversion pipe(13)Into the first slip casting section(14), with slip casting Continue, the first slip casting section(14)With the second slip casting section(15)Filled by slurries;Continue slip casting at this time, make fraction slurries in slip casting pressure Power effect is lower to penetrate into coal body, after gas pumping sealing of hole is constructed, gas drainage pipe is connected into extraction pipeline, cuts external sealing of hole Grouting Pipe, cleans grouting pump.
Step 6, mash gas pumping drilling crack plugging construction:Gas pumping for a period of time after, sealed borehole circumference crack hair Educate, extraction concentration reduces, and according to live gas extraction concentration attenuation amplitude, borehole circumference crack is blocked;Split external Gap closure pipe is connected into grouting pump, is blocked and managed by crack under high grouting pressure(5), crack plugging material is pumped into borehole circumference Crack;After the plugging construction of mash gas pumping drilling crack, external crack closure pipe is cut, cleans grouting pump.
The possessed compared with prior art beneficial effect of the present invention is:(1)It is attached using 3 independent pouches, Then it is sleeved on gas pumping pipe, by varying the length of hole-sealing grouting pipe and crack closure pipe, it is possible to achieve sealing of hole segment length Degree, the adjusting of slip casting segment length, and then can reach and suitably adjust sealing of hole scheme according to the needs at scene, according to different geology bars The purpose of part flexible design sealing of hole segment length;(2)The major diameter fast joint being arranged on hole-sealing grouting pipe can realize three capsules Quick, the flexible installation of bag, reduces the time of construction;(3)The pressure-sensitive overflow valve of installation is in No. two capsules on the right side of No. two pouches The slurry pressure of bag automatically turns on when reaching predetermined value, and slip casting can be carried out to the second slip casting section by opening pressure-sensitive overflow valve, It can realize that the slurries of the second sealing of hole sections flow into the first sealing of hole sections by leading slurry pipe, and then three stifled two notes of preliminary realization drilling are close Envelope;(4)After a certain period of time, drill concentration decline for extraction, can be realized by crack closure pipe and borehole circumference crack is sealed It is stifled, and then realize three stifled three note formulas sealings of mash gas pumping drilling.
To sum up, the configuration of the present invention is simple, is easily installed, easy to underground construction, in underground gas extraction sealing of hole, Ke Yishi Freely adjusting for existing sealing of hole segment length, realizes the closure in borehole sealing and borehole circumference crack, realizes borehole sealing on the whole " three stifled three notes " pattern;The invention can make the sealing of hole segment length of gas pumping sealing of hole flexible and changeable according to field demand, can To greatly improve efficiency, the seal degree of mash gas pumping drilling is improved.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is No. two pouches and associated satellite part schematic diagram in the present invention.
Fig. 3 is the schematic cross-section of No.1 pouch in the present invention.
Fig. 4 is the schematic cross-section of No. two pouches in the present invention.
Fig. 5 is the schematic cross-section of No. three pouches in the present invention.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
As shown in Figure 1, one kind wears three pouch plugging device of formula, from left to right include No.1 pouch 1, two pouches 2, three successively Number pouch 3, hole-sealing grouting pipe 4, crack closure pipe 5, lead slurry pipe 13;As in Figure 3-5,1, No. two pouch of the No.1 pouch 2nd, the structure of No. three pouches 3 is identical, the enclosure space formed by outer layer elasticity cloth set 21 and the sewing of internal layer elasticity cloth set 22, institute That states outer layer elasticity cloth set inner side close contact is additionally provided with one layer of rubber sleeve 23, and some minimum breathe freely is opened up on the rubber sleeve The venthole of impermeable slurry, the internal layer elasticity cloth set 22 form an interior ducted body 20, the axis of interior ducted body 20 with inner space Line is parallel with the axis of inside and outside two layers elastic cloth set, and the material of the outer layer elasticity cloth set 21 and internal layer elasticity cloth set 22 is permeable not Thoroughly slurry, it is necessary to explanation, all pouches for meeting feature of the present invention in the protection domain of this patent, No.1 pouch, No. two pouches and No. three respective length of pouch can be adjusted according to sealed borehole length;As shown in Figure 1, the hole-sealing grouting pipe 4 The pipeline to form a perforation is connected using three-stage plastic tube, every section of plastic tube is each passed through No.1 pouch 1, two pouches 2, three The inside of number pouch 3, and the major diameter fast joint 6 installed by every section of plastic tube left end carries out head and the tail connection so as to become sealing of hole Grouting Pipe 4, the hole-sealing grouting pipe 4 are fixedly connected by steel loop 8 with No.1 pouch 1, two pouches, 2, No. three pouches 3, the steel Ring shares six and is separately fixed at the top position in each pouch both ends;What the length of every section of plastic tube can be passed through according to it The length of pouch is adjusted, and grouting port is equipped with the middle part of every section of plastic tube, and the grouting port is located at the inside of pouch And check valve 10 is installed on grouting port;Positioned at the plastic tube of No. two pouches, its right side is installed on unidirectional sense by the position of proximal end Pressurized overflow valve 11, positioned at the plastic tube of No. three pouches, its right-hand end installs a plug 9, and every section of plastic pipe clip is in the rubber Between gum cover 23 and the internal layer elasticity cloth set;As shown in Figure 1, the crack closure pipe 5 is less than hole-sealing grouting using caliber The pipe with small pipe diameter plastic tube of the caliber of pipe 4, the initiating terminal of the crack closure pipe 5 install minor diameter fast joint 7, crack closure pipe 5 Space from end installs two tubular iron sets 17 spaced apart, if having on the tube wall of the crack closure pipe 5 between two iron set The dry less outlet of size, is crack liquid for plugging grout outlet 18;The leading portion of the crack closure pipe 5 passes through No.1 pouch Interior ducted body, the hole-sealing grouting pipe that section is located at the outside of No. two pouches and is close in No. two pouches thereafter are arranged, from And the crack liquid for plugging grout outlet 18 of the crack closure pipe 5 is located at the outside of No. two pouches, the crack near No. two pouches 2 Pachydermia set 16 is installed on closure pipe 5, to prevent slurries from entering in crack closure pipe.
As shown in Fig. 2, No. two pouch external margins position is provided with sewing line 12, the sewing line 12 is with regard to No. two capsules The axisymmetrical of bag 2 is disposed with two, and that sewing line close to hole-sealing grouting pipe 4 and the liquid for plugging grout outlet 18 Locus overlaps, and the sewing line 12 is the U-shaped or V-type sewing line being applied to by apparatus of sewing in No. two pouches, its Purpose is No. two pouches because being expanded after injection slurries, and the circumferential expansion amount residing for sewing line is smaller, to protect liquid for plugging to go out Starching mouth 18, No. two inflated pouches are not flattened;The slurry pipe 13 of leading is more than two through the interior ducted body of No. two pouches, its length Number length of pouch vertically so that the both ends for leading slurry pipe 13 are respectively positioned on the outside of No. two pouches, the effect for leading slurry pipe 13 It is that the slurries in the second slip casting section 15 are imported into the first slip casting section 14.
A kind of application method for wearing three pouch plugging device of formula, wears three pouch plugging device of formula using above-mentioned one kind, presses Carried out according to following steps:
Gas drainage pipe 19, is each passed through the interior ducted body of No. two pouches and No. three pouches by step 1, so that by No. two pouches It is sleeved on No. three pouches on gas drainage pipe 19, connects 6 connections soon by major diameter positioned at No. two pouches and the modeling in No. three pouches The both ends of No. two pouches and No. three pouches, are then lashed on gas drainage pipe 19 by expects pipe;
Gas drainage pipe 19, is passed through the interior ducted body of No.1 pouch, so that No.1 pouch is sleeved on gas drainage pipe by step 2 On 19, while the interior ducted body by crack closure pipe 5 through No.1 pouch, and the terminal part of crack closure pipe 5 is fixed on two In number pouch at the sewing line 12 of Grouting Pipe 4, crack is then blocked by pipe 5 and the hole-sealing grouting pipe outside pouch by the rope made of hemp 4 are fixed together;
Step 3, extraction borehole mouth is put into by the three pouch plugging device of formula that wears connected, will be outer by major diameter fast joint 6 Connect hole-sealing grouting pipe to be connected with hole-sealing grouting pipe 4, by minor diameter fast joint 7, closure pipe in external crack is blocked into pipe 5 with crack Connection;
Step 4, according to the hole sealing depth of setting, connects gas drainage pipe, and the three pouch plugging device of formula that wears connected is sent into Drill designated position, meanwhile, the external hole-sealing grouting pipe of certain length and external crack closure pipe are sent into drilling in the lump;
Step 5, the construction of gas pumping sealing of hole:External hole-sealing grouting pipe is connected with grouting pump, by grouting pump, slurries are passed through The pouch 3 of pouch 2, three of No.1 pouch 1, two is injected by the check valve 10 in three pouches at the same time;When pouch is filled by slurries Afterwards, the first slip casting section 14 is formed between No.1 pouch and No. two pouches, second is formed between No. two pouches and No. three pouches Slip casting section 15;When the slurries in No. two pouches reach certain pressure, unidirectional pressure-sensitive overflow valve 11 is opened, and slurries enter the second note Starch section 15, when the slurries liquid level in the second slip casting section 15 reaches the height of diversion pipe 13, the slurry in the second slip casting section 15 Liquid enters the first slip casting section 14 via diversion pipe 13, and as slip casting continues, the first slip casting section 14 and the second slip casting section 15 are by slurries Fill;Continue slip casting at this time, fraction slurries is penetrated into coal body under grouting pressure effect, after gas pumping sealing of hole is constructed, Gas drainage pipe is connected into extraction pipeline, cuts external hole-sealing grouting pipe, cleans grouting pump.
Step 6, mash gas pumping drilling crack plugging construction:Gas pumping for a period of time after, sealed borehole circumference crack hair Educate, extraction concentration reduces, and according to live gas extraction concentration attenuation amplitude, borehole circumference crack is blocked;Split external Gap closure pipe is connected into grouting pump, blocks pipe 5 by crack under high grouting pressure, crack plugging material is pumped into borehole circumference and is split Gap;After the plugging construction of mash gas pumping drilling crack, external crack closure pipe is cut, cleans grouting pump.
The above, is only presently preferred embodiments of the present invention, and limitation in any form is not done to the present invention, any ripe Professional and technical personnel is known, without departing from the scope of the present invention, when the technology contents work using the disclosure above Go out change or modify the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, still fall within this In the range of inventive technique scheme.

Claims (6)

1. one kind wears three pouch plugging device of formula, it is characterised in that including No.1 pouch(1), two pouches(2), No. three pouches (3), hole-sealing grouting pipe(4), crack closure pipe(5), lead slurry pipe(13);The No.1 pouch(1), No. two pouches(2), No. three Pouch(3)Material it is identical, structure is identical, respective length can be adjusted according to sealed borehole length, the hole-sealing grouting pipe(4) The pipeline to form a perforation is connected using three-stage plastic tube, every section of plastic tube is each passed through No.1 pouch(1), No. two pouches (2), No. three pouches(3)Inside, and the major diameter fast joint installed by every section of plastic tube left end(6)Carry out head and the tail connection from And become hole-sealing grouting pipe(4), the length of every section of plastic tube can be adjusted according to the length for the pouch that it is passed through, every section of modeling Grouting port is equipped with the middle part of expects pipe, the grouting port, which is located on the inside of pouch and grouting port, installs check valve(10), it is located at Plastic tube in No. two pouches, its right side are installed on unidirectional pressure-sensitive overflow valve by the position of proximal end(11), positioned at No. three pouches Interior plastic tube, its right-hand end install a plug(9);The crack closure pipe(5)Hole-sealing grouting is less than using caliber Pipe(4)Caliber pipe with small pipe diameter plastic tube, crack closure pipe(5)Initiating terminal install minor diameter fast joint(7), it is described to split Gap closure pipe(5)Leading portion pass through No.1 pouch, section positioned at the outside of No. two pouches and is close in No. two pouches thereafter Hole-sealing grouting pipe is arranged, so that crack closure pipe(5)Crack liquid for plugging grout outlet(18)Positioned at No. two pouches It is exterior;It is described to lead slurry pipe(13)Through No. two pouches, its length is more than the length of No. two pouches vertically so that leads slurry pipe(13) Both ends be respectively positioned on the outsides of No. two pouches, it is described to lead slurry pipe(13)Effect be, by the second slip casting section(15)Interior slurries are led Enter the first slip casting section(14).
2. one kind according to claim 1 wears three pouch plugging device of formula, it is characterised in that the No.1 pouch(1), two Pouch(2)With No. three pouches(3)By outer layer elasticity cloth set(21)And internal layer elasticity cloth set(22)The enclosure space formed is sewed, Close contact is additionally provided with one layer of rubber sleeve with venthole on the inside of the outer layer elasticity cloth set(23), the internal layer elasticity cloth set (22)One interior ducted body is formed with inner space(20), the interior ducted body(20)Axis and inside and outside two layers elastic cloth set Axis is parallel, the outer layer elasticity cloth set(21)With internal layer elasticity cloth set(22)The permeable impermeable slurry of material, the hole-sealing grouting Position of the pipe clamp between the rubber sleeve 23 and the internal layer elasticity cloth set, the crack closure pipe(5)Leading portion from one The interior ducted body of number pouch passes through, and the interior ducted body for leading slurry pipe from No. two pouches passes through.
3. one kind according to claim 2 wears three pouch plugging device of formula, it is characterised in that the hole-sealing grouting pipe(4) Pass through steel loop(8)With No.1 pouch(1), two pouches(2), No. three pouches(3)It is fixedly connected, the steel loop shares six respectively admittedly It is scheduled on the top position in each pouch both ends.
4. one kind according to claim 3 wears three pouch plugging device of formula, it is characterised in that the crack closure pipe(5) Space from end installs two tubular iron sets spaced apart(17), the crack between two iron cover blocks pipe(5)Tube wall on There is the less outlet of several sizes, be crack liquid for plugging grout outlet(18), in No. two pouches(2)Neighbouring crack closure pipe (5)On install pachydermia set(16).
5. one kind according to claim 4 wears three pouch plugging device of formula, it is characterised in that outside No. two pouches Portion's marginal position is provided with sewing line(12), the sewing line(12)With regard to No. two pouches(2)Axisymmetrical be disposed with two, and Close to hole-sealing grouting pipe(4)That sewing line and the liquid for plugging grout outlet(18)Locus overlap, the sewing Line is U-shaped or V-type.
6. a kind of application method for wearing three pouch plugging device of formula, it is characterised in that worn using one kind as claimed in claim 5 Three pouch plugging device of shell type, carries out in accordance with the following steps:
Step 1, by gas drainage pipe(19)The interior ducted body of No. two pouches and No. three pouches is each passed through, so that by No. two capsules Bag is sleeved on gas drainage pipe with No. three pouches(19)On, connect soon by major diameter(6)Connection is positioned at No. two pouches and No. three pouches Then the both ends of No. two pouches and No. three pouches are lashed to gas drainage pipe by interior plastic tube(19)On;
Step 2, by gas drainage pipe(19)Through the interior ducted body of No.1 pouch, so that No.1 pouch is sleeved on gas drainage under suction Pipe(19)On, while crack is blocked and is managed(5)Through the interior ducted body of No.1 pouch, and crack is blocked and is managed(5)Terminal part It is fixed in No. two pouches close to Grouting Pipe(4)Sewing line(12)Place, is connect soon by major diameter(6)Connection is located at No.1 pouch With the plastic tube in No. two pouches, then crack is blocked by the rope made of hemp and is managed(5)With the hole-sealing grouting pipe outside pouch(4)It is fixed on Together;
Step 3, is put into extraction borehole mouth by the three pouch plugging device of formula that wears connected, passes through major diameter fast joint(6), will External hole-sealing grouting pipe and hole-sealing grouting pipe(4)Connection, passes through minor diameter fast joint(7), external crack is blocked into pipe and crack Closure pipe(5)Connection;
Step 4, according to the hole sealing depth of setting, connects gas drainage pipe, and the three pouch plugging device of formula that wears connected is sent into Drill designated position, meanwhile, the external hole-sealing grouting pipe of certain length and external crack closure pipe are sent into drilling in the lump;
Step 5, the construction of gas pumping sealing of hole:External hole-sealing grouting pipe is connected with grouting pump, by grouting pump, by injection slurry Via respective check valve in three pouches(10)Inject No.1 pouch at the same time(1), No. two pouches(2), No. three pouches(3);When After pouch is filled by slurries, the first slip casting section is formed between No.1 pouch and No. two pouches(14), in No. two pouches and No. three The second slip casting section is formed between pouch(15);When the slurries in No. two pouches reach certain pressure, unidirectional pressure-sensitive overflow valve (11)Open, slurries enter the second slip casting section(15), when the second slip casting section(15)Interior slurries liquid level reaches diversion pipe (13)Height when, the second slip casting section(15)Interior slurries are via diversion pipe(13)Into the first slip casting section(14), with slip casting Continue, the first slip casting section(14)With the second slip casting section(15)Filled by slurries;Continue slip casting at this time, make fraction slurries in slip casting pressure Power effect is lower to penetrate into coal body, after gas pumping sealing of hole is constructed, gas drainage pipe is connected into extraction pipeline, cuts external sealing of hole Grouting Pipe, cleans grouting pump;
Step 6, mash gas pumping drilling crack plugging construction:Gas pumping for a period of time after, sealed borehole circumference cranny development, Extraction concentration reduces, and according to live gas extraction concentration attenuation amplitude, borehole circumference crack is blocked;External crack is sealed Plugging is connected into grouting pump, is blocked and managed by crack under high grouting pressure(5), crack plugging material is pumped into borehole circumference and is split Gap;After the plugging construction of mash gas pumping drilling crack, external crack closure pipe is cut, cleans grouting pump.
CN201711294128.3A 2017-12-08 2017-12-08 Sleeve-through three-bag plugging device and using method thereof Active CN107989571B (en)

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CN201711294128.3A CN107989571B (en) 2017-12-08 2017-12-08 Sleeve-through three-bag plugging device and using method thereof

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CN110130852A (en) * 2019-05-17 2019-08-16 河南理工大学 Wear formula list pouch secondary grouting hole sealing device and method for sealing
CN110159224A (en) * 2019-05-17 2019-08-23 河南理工大学 Three pouches block integral type hole sealing device and method for sealing

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