CN108278096A - A kind of seat earth layer-through drilling dynamic self-adapting hole sealing device and method - Google Patents
A kind of seat earth layer-through drilling dynamic self-adapting hole sealing device and method Download PDFInfo
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- CN108278096A CN108278096A CN201810270733.5A CN201810270733A CN108278096A CN 108278096 A CN108278096 A CN 108278096A CN 201810270733 A CN201810270733 A CN 201810270733A CN 108278096 A CN108278096 A CN 108278096A
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- pouch
- drainage tube
- pipe
- slip casting
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 81
- 238000005553 drilling Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 55
- 239000007924 injection Substances 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000007569 slipcasting Methods 0.000 claims abstract description 39
- 239000012530 fluid Substances 0.000 claims abstract description 29
- 238000000605 extraction Methods 0.000 claims abstract description 24
- 239000011440 grout Substances 0.000 claims description 35
- 239000011435 rock Substances 0.000 claims description 24
- 239000003245 coal Substances 0.000 claims description 12
- 239000011083 cement mortar Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 239000002360 explosive Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 238000009955 starching Methods 0.000 claims description 2
- 239000002775 capsule Substances 0.000 claims 1
- 239000003566 sealing material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/006—Production of coal-bed methane
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of seat earth layer-through drilling dynamic self-adapting hole sealing device and method, including drainage tube and slip casting fluid injection hole packer arranged side by side, the slip casting fluid injection hole packer includes Grouting Pipe, liquid injection pipe and the first pouch being sequentially fixedly connected in Grouting Pipe, the second pouch and third pouch, the front opening rear end of Grouting Pipe is provided with plug, the liquid injection pipe is arranged side by side with Grouting Pipe, the front and back end of liquid injection pipe is open, liquid injection pipe is passed through between the first pouch and Grouting Pipe, and the open rearward end of liquid injection pipe is set between the first pouch and the second pouch；The scalable drainage tube is wrapped up with Grouting Pipe by the first pouch, the second pouch, third pouch.The present invention adapts to the dynamic deformations such as stretching, the bad break of extraction borehole, ensures the intact leakproofness of sealing material and drainage tube, and block the dynamic crack formed in relaxation zone in time, separates leakage path, it is ensured that the efficient extraction of bottom plate layer-through drilling.
Description
Technical field
The present invention relates to coal mine machinery fields, are filled more particularly, to a kind of seat earth layer-through drilling dynamic self-adapting sealing of hole
It sets and method.
Background technology
Coal-bed gas is both to influence the principal element and a kind of energy resources of preciousness that safety of coal mines efficiently produces.Watt
This extraction is to eliminate the fundamental measure of coal mine major gas accident, and obtain clean energy resource, increase energy resource supply, reduce ring
The important measure of border pollution.As mine is to deep mining, gas pressure, gas bearing capacity increase, Gas Disaster getting worse, watt
This extraction becomes the important technical for ensureing that highly gassy mine, projecting mine are kept the safety in production, and is widely applied.
The influence that limitation and gas permeability of coal seam due to geological conditions are low, coal seam is soft, the drilling of traditional concordant are easy
Appearance drill depth as shallow, control it is uneven the problems such as, cannot fundamentally ensure gas control effect.Utilize seat earth rock gangway
Construct layer-through drilling to coal seam, large area carried out to unworked country domain and is taken out in advance, when ensure that drilling arrangement in place, control it is uniform,
Second is that by means of the protection of rock pillar, safety work has guarantee.It is anti-as projecting mine that bottom plate layer-through drilling takes out coal-bed gas in advance
The technical measures controlled coal and gas prominent accident, ensure safety work.
For efficient mash gas extraction, it is necessary to be sealed to extraction borehole.Coal bed gas extraction drilling and sealing method at present
Mainly there are polyurethane foam material sealing of hole, cement mortar sealing of hole, special hole packer sealing of hole and combinations thereof sealing of hole.These method for sealing
Essence belongs to disposable blocking technology, does not consider the dynamic deformation feature of drilling, causes sealing of hole effect undesirable, gas pumping
Effect is poor.
According to mine pressure knowledge and borehole observation, there are a relaxation zone around stone head, the range is general
It is 3 ~ 5 times of tunnel radius.In relaxation zone, rock occur absciss layer, the changing of the relative positions, expansion phenomena such as, if the sealing of hole of extraction borehole
Material and drainage tube are not suitable with this dynamic change, and the drainage tube of inductility, the integrality of solid sealing of hole sections are highly prone to brokenly
It is bad, cause extraction borehole gas leakage；Extraction borehole will bear the effect of tensile stress, shear stress, cause sealing material and extraction
The breaking of pipe, bad break form leakage path, reduce gas pumping effect.
Invention content
In view of the above problems, a kind of seat earth layer-through drilling dynamic self-adapting hole sealing device of present invention proposition and method,
By being used cooperatively for solid-liquid two-phase hole sealing technology and scalable drainage tube, adapts to the dynamic such as stretching, bad break of extraction borehole and become
Shape ensures the intact leakproofness of sealing material and drainage tube, and blocks the dynamic crack formed in relaxation zone in time, separates gas leakage
Channel, it is ensured that the efficient extraction of bottom plate layer-through drilling.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of seat earth layer-through drilling dynamic self-adapting hole sealing device, including drainage tube arranged side by side and slip casting fluid injection sealing of hole
Device, the slip casting fluid injection hole packer include Grouting Pipe, liquid injection pipe and the first pouch being sequentially fixedly connected in Grouting Pipe,
The front opening rear end of two pouches and third pouch, Grouting Pipe is provided with plug, and control is provided in the Grouting Pipe to first
Pouch, the second pouch and the first unidirectional grout component of third pouch slip casting, the second unidirectional grout component and third unidirectional grout
Component is provided with explosive valve in the Grouting Pipe between second pouch and third pouch；The liquid injection pipe and slip casting tube side-by-side
Setting, the front and back end of liquid injection pipe are open, and liquid injection pipe is passed through between the first pouch and Grouting Pipe, and the open rearward end of liquid injection pipe
It is set between the first pouch and the second pouch；The scalable drainage tube is with Grouting Pipe by the first pouch, the second pouch, third
Pouch is wrapped up.
Preferably, the drainage tube is scalable drainage tube, scalable drainage tube includes the first drainage tube, the second extraction
Pipe and seal pipe, the rear end of first drainage tube is connected with the front end of the second drainage tube by seal pipe, and sealed tube
It is located at the outside of the first drainage tube and the second drainage tube junction, the first drainage tube and the second extraction pipe diameter are identical, seal pipe
Diameter be more than the diameter of the first drainage tube and the second drainage tube, the second drainage tube is sealedly and fixedly connected with seal pipe, the first pumping
Pipe is adopted to be slidably connected with the sealing seal of tube.
Preferably, the seal ring assembly of guaranteed leakproofness is set between the first drainage tube and seal pipe, the sealing
Coil assembly is sheathed on the outside of the first drainage tube, including the first sealing ring, the second sealing ring and third sealing ring, the seal pipe
Inside be provided with the first groove and the second groove for placing the first sealing ring and the second sealing ring, first drainage tube
Front end is provided with the third groove for placing third sealing ring.
Preferably, the rear end of second drainage tube is provided with multiple apertures.
Preferably, the first unidirectional grout component sealed set is in the inside of the first pouch, the described second unidirectional note
Component sealed set is starched in the inside of the second pouch, the third unidirectional grout component sealed set is in the inside of third pouch.
Preferably, the knot of the first unidirectional grout component, the second unidirectional grout component and third unidirectional grout component
Structure all same includes slip casting casing, the corresponding position in the Grouting Pipe with the first pouch, the second pouch and third pouch
It is provided with injected hole, the slip casting casing is set in the corresponding position in Grouting Pipe with injected hole.
Preferably, the both ends of first pouch, the second pouch and third pouch are fixed on note by pouch pipe collar
It starches on pipe.
Using the method for sealing of above-mentioned hole sealing device, include the following steps：
1., from floor rock tunnel to coal seam construct bottom plate layer-through drilling；
2., bottom plate layer-through drilling construction after, according to drilling construction depth select appropriate length scalable drainage tube and note
Fluid injection hole packer is starched, and they are combined, is placed into the precalculated position in bottom plate layer-through drilling；Ensure simultaneously scalable
The seal pipe of drainage tube is located between the first pouch and the second pouch of slip casting fluid injection hole packer；
3., the Grouting Pipe of slip casting fluid injection hole packer connect with grouting device, by prepared cement mortar injection hole, noting
Under the action of starching pressure, the first unidirectional grout component, the second unidirectional grout component and third unidirectional grout component are opened, to the
Cement mortar is injected in one pouch, the second pouch and the slip casting of third pouch, so that pouch is expanded, by the first pouch and the second pouch
Between, between the second pouch and third pouch be respectively formed unique spacer, after grouting pressure reaches certain numerical value, pressure opens the
Explosive valve between two pouches and third pouch, cement mortar are formed full of the unique spacer between the second pouch and third pouch
Solid sealing of hole sections, slip casting terminate；
4., after slip casting 48h, the cement slurry sets between the second pouch and third pouch are at solid sealing of hole sections；By slip casting fluid injection
The liquid injection pipe of hole packer is connect with grouting device, is injected to the unique spacer between the first pouch and the second pouch by liquid injection pipe
Special liquid, pressure keep 1MPa or more, form liquid sealing of hole sections, and fluid injection terminates.
Beneficial effects of the present invention are：1, in the relaxation zone of floor rock tunnel, the sealing that bottom plate wears layer extraction borehole is adopted
With solid-liquid two-phase seal technology and scalable drainage tube, scalable drainage tube and liquid sealing of hole sections are in base plate tunnel rock crack
In relaxation zone, the deformation failures such as their absciss layer, changing of the relative positions occurred with the use of adaptation roadway surrounding rock ensure drainage tube, sealing of hole
The integrality of material, liquid block the dynamic crack of formation, improve the sealing effect of extraction borehole in time；2, in floor rock
In the relaxation zone of tunnel, liquid sealing of hole sections keep certain pressure, the pressure of liquid to adapt to tunnel higher than the air pressure in tunnel
The dynamic change of rock crack relaxation zone, and liquid can block the crack that rock stratum dynamic failure is formed in time, and to periphery
Infiltration forms liquid isolated screen, has blocked tunnel air to the migration in negative pressure extraction region.
Description of the drawings
Fig. 1 is the concrete application schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram of the slip casting fluid injection hole packer in Fig. 1；
Fig. 3 is the sectional view of the first pouch in Fig. 2；
Fig. 4 is the structural schematic diagram of scalable drainage tube in Fig. 1.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
It please refers to Fig.1 to Fig.4.It should be clear that structure, ratio, size etc. depicted in this specification institute accompanying drawings, only to
Coordinate the revealed content of specification, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, should all fall in disclosed technology
In the range of content can cover.In the description of the present invention, it should be noted that term "center", "upper", "lower", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "inner", "outside" is orientation based on ... shown in the drawings or position
Relationship is merely for convenience of description of the present invention and simplification of the description, and not indicating or implying the indicated device or element must have
There is specific orientation, with specific azimuth configuration and operation, therefore is not considered as limiting the invention, it is also non-limiting
The enforceable range of the present invention, relativeness are altered or modified, in the case where changing technology contents without essence, when being also considered as this hair
Bright enforceable scope.In addition, term " first ", " second ", " third " are used for description purposes only, and should not be understood as instruction or
Imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can
Can also be electrical connection to be mechanical connection;It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Fig. 1 show the specific scheme of installation of the present invention, wherein 7 being floor rock tunnel, 8 being coal seam, 9 being tunnel rock
Layer crack relaxation zone.
A kind of seat earth layer-through drilling dynamic self-adapting hole sealing device, including drainage tube arranged side by side and slip casting fluid injection
Hole packer 2, drainage tube of the invention are scalable drainage tube 1, and scalable drainage tube 1 includes the first drainage tube 11, the second extraction
Pipe 12 and seal pipe 13, the rear end of the first drainage tube 11 are connected with the front end of the second drainage tube 12 by seal pipe 13, and close
Tube sealing 13 is set in the outside of 12 junction of the first drainage tube 11 and the second drainage tube, the first drainage tube 11 and the second drainage tube 12
Diameter is identical, and the diameter of seal pipe 13 is more than the diameter of the first drainage tube 11 and the second drainage tube 12, the second drainage tube 12 with it is close
Tube sealing 13 is sealedly and fixedly connected, and in the present embodiment, fluid sealant may be used and fix the second drainage tube 12 and the sealing of seal pipe 13
Second drainage tube 12, can also be made into integration by connection with seal pipe 13, and the first drainage tube 11 connects with the sealing sliding of seal pipe 13
It connects.
In the present embodiment, the seal ring assembly of guaranteed leakproofness is set between the first drainage tube 11 and seal pipe 13, it is close
Ring assemblies are sheathed on the outside of the first drainage tube 11, including the first sealing ring 14, the second sealing ring 15 and third sealing ring 16,
The inside of seal pipe 13 is provided with the first groove 17 and the second groove 18 for placing the first sealing ring 14 and the second sealing ring 15,
The front end of first drainage tube 11 is provided with the third groove 19 for placing third sealing ring 16.
The rear end of second drainage tube 12 is provided with multiple apertures 121.
Slip casting fluid injection hole packer 2 include Grouting Pipe 21, liquid injection pipe 22 and be sequentially fixedly connected in Grouting Pipe 21 the
The front opening rear end of one pouch 23, the second pouch 24 and third pouch 25, Grouting Pipe 21 is provided with plug 29, Grouting Pipe 21
Front end is equipped with slip casting valve 33, and control is provided in Grouting Pipe 21 to the first pouch 23, the second pouch 24 and third pouch 25
The first unidirectional grout component 26, the second unidirectional grout component 27 and the third unidirectional grout component 28 of slip casting, 24 He of the second pouch
It is provided with explosive valve 30 in Grouting Pipe 21 between third pouch 25；Liquid injection pipe 22 is arranged side by side with Grouting Pipe 21, liquid injection pipe 22
Front and back end be open, the front end of liquid injection pipe 22 is equipped with fluid injection valve 34, and liquid injection pipe 22 is from the first pouch 23 and Grouting Pipe 21
Between pass through, and the open rearward end of liquid injection pipe 22 is set between the first pouch 23 and the second pouch 24, scalable drainage tube 1 with
Grouting Pipe 21 is wrapped up by the first pouch 23, the second pouch 24, third pouch 25.
First unidirectional grout component, 26 sealed set is set in the inside of the first pouch 23, the sealing of the second unidirectional grout component 27
It is placed in the inside of the second pouch 24,28 sealed set of third unidirectional grout component is in the inside of third pouch 25.
The structure of first unidirectional grout component 26, the second unidirectional grout component 27 and third unidirectional grout component 28 is homogeneous
Together, include slip casting casing 3, the corresponding position in Grouting Pipe 21 with the first pouch 23, the second pouch 24 and third pouch 25
It is provided with injected hole 4, slip casting casing 3 is set in the corresponding position with injected hole 4 in Grouting Pipe 21.
The both ends of first pouch 23, the second pouch 24 and third pouch 25 are fixed on Grouting Pipe 21 by pouch pipe collar 5
On.
The method for sealing of hole sealing device of the present invention, includes the following steps：
1., constructed bottom plate layer-through drilling 6 from floor rock tunnel 7 to coal seam 8；
2., bottom plate layer-through drilling 6 construct after, according to drilling construction depth select appropriate length 1 He of scalable drainage tube
Slip casting fluid injection hole packer 2, and they are combined, it is placed into the precalculated position in bottom plate layer-through drilling 6；Ensureing simultaneously can
The seal pipe 13 of flexible drainage tube 1 is located between the first pouch 23 of slip casting fluid injection hole packer 2 and the second pouch 24；
3., the Grouting Pipe 21 of slip casting fluid injection hole packer 2 connect with grouting device, by prepared cement mortar injection hole,
Under the action of grouting pressure, the first unidirectional grout component 26, the second unidirectional grout component 27 and third unidirectional grout component 28
It opens, injects cement mortar into 25 slip casting of the first pouch 23, the second pouch 24 and third pouch, pouch is made to expand, it will
It is respectively formed unique spacer, slip casting pressure between first pouch 23 and the second pouch 24, between the second pouch 24 and third pouch 25
After power reaches certain numerical value, pressure opens the explosive valve 30 between the second pouch 24 and third pouch 25, and cement mortar is full of second
Unique spacer between pouch 24 and third pouch 25 forms solid sealing of hole sections 31, and slip casting terminates；
4., after slip casting 48h, the cement slurry sets between the second pouch 24 and third pouch 25 are at solid sealing of hole sections 31；It will note
The liquid injection pipe 22 of slurry fluid injection hole packer 2 is connect with grouting device, by liquid injection pipe 22 to the first pouch 23 and the second pouch 24 it
Between unique spacer inject special liquid, pressure keeps 1MPa or more, forms liquid sealing of hole sections 32, fluid injection terminates.
Sealing of hole parameter generally refers to 32 length of 31 length of solid sealing of hole sections and liquid sealing of hole sections, the length of solid sealing of hole sections 31
Degree is generally 5m, except tunnel rock crack relaxation zone 9, not by the shadow of the deformation failures such as absciss layer, the bad break of tunnel rock stratum
It rings；32 length of liquid sealing of hole sections is greater than the size equal to tunnel rock crack relaxation zone 9, generally 10m, in tunnel rock
In layer crack relaxation zone 9, hydraulic seal adapts to the deformation failures such as absciss layer, the bad break of tunnel rock stratum, can ensure liquid sealing of hole sections
32 integrality, and the dynamic crack in tunnel rock crack relaxation zone 9 is blocked in time.
The sealing of bottom plate layer-through drilling 6 is completed by above procedure, forms the dynamic self-adapting sealing of hole of bottom plate layer-through drilling 6
Device and method.Within the extraction period of service of bottom plate layer-through drilling 6, the fluid pressure in liquid sealing of hole sections 8 is observed in timing, works as liquid
When body pressure is less than 1MPa, timely fluid injection supercharging keeps on-line pressure sealant.
The principle of the present invention is：（1）After stone head is dug, under the action of mine pressure, roadway surrounding rock and top plate hair
The deformations such as raw absciss layer, the changing of the relative positions, form tunnel rock crack relaxation zone 9, with the extension of time, deflection is gradual around tunnel
Increase；（2）Bottom plate layer-through drilling 6 is used cooperatively by solid-liquid two-phase seal technology and scalable drainage tube 1, is adapted to tunnel and is enclosed
The deformation failures such as absciss layer, the changing of the relative positions that rock occurs, ensure that the integrality of scalable drainage tube 1, sealing material, liquid block shape in time
At dynamic crack, improve the sealing effect of extraction borehole；（3）It is filled in tunnel rock crack relaxation zone 9 with certain
The pressure of the liquid of pressure, liquid has blocked tunnel air to the migration in negative pressure extraction region higher than the air pressure in tunnel.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, and do not carrying on the back
In the case of spirit or essential attributes from the present invention, the present invention can be realized in other specific forms.Therefore, no matter from which
From the point of view of a bit, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is wanted by appended right
Ask rather than above description limit, it is intended that by all changes that come within the meaning and range of equivalency of the claims
It is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (8)
1. a kind of seat earth layer-through drilling dynamic self-adapting hole sealing device, it is characterised in that：Including drainage tube arranged side by side
With slip casting fluid injection hole packer, the slip casting fluid injection hole packer includes Grouting Pipe, liquid injection pipe and is sequentially fixedly connected on Grouting Pipe
On the first pouch, the second pouch and third pouch, the front opening rear end of Grouting Pipe is provided with plug, is set in the Grouting Pipe
Control is equipped with to the first pouch, the second pouch and the first unidirectional grout component of third pouch slip casting, the second unidirectional grout component
With third unidirectional grout component, explosive valve is provided in the Grouting Pipe between second pouch and third pouch；The fluid injection
Pipe is arranged side by side with Grouting Pipe, and the front and back end of liquid injection pipe is open, and liquid injection pipe is passed through between the first pouch and Grouting Pipe, and notes
The open rearward end of liquid pipe is set between the first pouch and the second pouch；The scalable drainage tube is with Grouting Pipe by the first capsule
Bag, the second pouch, third pouch are wrapped up.
2. a kind of seat earth layer-through drilling dynamic self-adapting hole sealing device according to claim 1, it is characterised in that：Institute
State drainage tube be scalable drainage tube, scalable drainage tube include the first drainage tube, the second drainage tube and seal pipe, described first
The rear end of drainage tube is connected with the front end of the second drainage tube by seal pipe, and sealed tube is located at the first drainage tube and second
The outside of drainage tube junction, the first drainage tube and the second extraction pipe diameter are identical, and the diameter of seal pipe is more than the first drainage tube
With the diameter of the second drainage tube, the second drainage tube is sealedly and fixedly connected with seal pipe, the first drainage tube and sealing seal of tube sliding
Connection.
3. a kind of seat earth layer-through drilling dynamic self-adapting hole sealing device according to claim 2, it is characterised in that：The
The seal ring assembly of guaranteed leakproofness is set between one drainage tube and seal pipe, and the seal ring assembly is sheathed on the first extraction
The outside of pipe, including the first sealing ring, the second sealing ring and third sealing ring are provided on the inside of the seal pipe for placing the
The first groove and the second groove of one sealing ring and the second sealing ring, the front end of first drainage tube, which is provided with, places third sealing
The third groove of circle.
4. a kind of seat earth layer-through drilling dynamic self-adapting hole sealing device according to claim 3, it is characterised in that：Institute
The rear end for stating the second drainage tube is provided with multiple apertures.
5. a kind of seat earth layer-through drilling dynamic self-adapting hole sealing device according to claim 4, it is characterised in that：Institute
The first unidirectional grout component sealed set is stated in the inside of the first pouch, the second unidirectional grout component sealed set is in second
The inside of pouch, the third unidirectional grout component sealed set is in the inside of third pouch.
6. a kind of seat earth layer-through drilling dynamic self-adapting hole sealing device according to any one of claims 1 to 4, feature
It is：The structure all same of the first unidirectional grout component, the second unidirectional grout component and third unidirectional grout component, is wrapped
Including slip casting casing, the corresponding position in the Grouting Pipe with the first pouch, the second pouch and third pouch is provided with injected hole,
The slip casting casing is set in the corresponding position in Grouting Pipe with injected hole.
7. a kind of seat earth layer-through drilling dynamic self-adapting hole sealing device according to claim 6, it is characterised in that：Institute
The both ends for stating the first pouch, the second pouch and third pouch are fixed on by pouch pipe collar in Grouting Pipe.
8. the method for sealing of hole sealing device according to claim 7, which is characterized in that include the following steps：
1., from floor rock tunnel to coal seam construct bottom plate layer-through drilling；
2., bottom plate layer-through drilling construction after, according to drilling construction depth select appropriate length scalable drainage tube and note
Fluid injection hole packer is starched, and they are combined, is placed into the precalculated position in bottom plate layer-through drilling；Ensure simultaneously scalable
The seal pipe of drainage tube is located between the first pouch and the second pouch of slip casting fluid injection hole packer；
3., the Grouting Pipe of slip casting fluid injection hole packer connect with grouting device, by prepared cement mortar injection hole, noting
Under the action of starching pressure, the first unidirectional grout component, the second unidirectional grout component and third unidirectional grout component are opened, to the
Cement mortar is injected in one pouch, the second pouch and the slip casting of third pouch, so that pouch is expanded, by the first pouch and the second pouch
Between, between the second pouch and third pouch be respectively formed unique spacer, after grouting pressure reaches certain numerical value, pressure opens the
Explosive valve between two pouches and third pouch, cement mortar are formed full of the unique spacer between the second pouch and third pouch
Solid sealing of hole sections, slip casting terminate；
4., after slip casting 48h, the cement slurry sets between the second pouch and third pouch are at solid sealing of hole sections；By slip casting fluid injection
The liquid injection pipe of hole packer is connect with grouting device, is injected to the unique spacer between the first pouch and the second pouch by liquid injection pipe
Special liquid, pressure keep 1MPa or more, form liquid sealing of hole sections, and fluid injection terminates.
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| CN110173231A (en) * | 2019-07-08 | 2019-08-27 | 中煤科工集团重庆研究院有限公司 | To the closely knit hole-sealing pressure measuring device of drilling subsection and method under a kind of long range |
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| CN112922561A (en) * | 2021-03-03 | 2021-06-08 | 河南理工大学 | Gas extraction drilling hole sealing method for underground bottom suction roadway of coal mine |
| CN113605961A (en) * | 2021-08-12 | 2021-11-05 | 煤炭科学技术研究院有限公司 | Coal mine underground gas injection, displacement, injection and extraction dual-purpose recyclable hole sealing device and method |
| CN117127967A (en) * | 2023-09-27 | 2023-11-28 | 平顶山天安煤业股份有限公司勘探工程处 | System and method for detecting coal seam drilling gas extraction leakage point |
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