CN107503726A - Orientation hydraulic pressure for improving gas permeability of coal seam concentrates demolition set - Google Patents
Orientation hydraulic pressure for improving gas permeability of coal seam concentrates demolition set Download PDFInfo
- Publication number
- CN107503726A CN107503726A CN201710962225.9A CN201710962225A CN107503726A CN 107503726 A CN107503726 A CN 107503726A CN 201710962225 A CN201710962225 A CN 201710962225A CN 107503726 A CN107503726 A CN 107503726A
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- Prior art keywords
- tubular body
- directional blasting
- blasting tube
- coal seam
- blasthole
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
Abstract
Orientation hydraulic pressure for improving gas permeability of coal seam concentrates demolition set, it is related to the anti-reflection technical field in coal seam, it includes directional blasting tube, sealed by cover plate at directional blasting tube both ends, it is spaced apart on the outer peripheral face of directional blasting tube and is provided with multiple energy release apertures, energy release aperture communicates with the inner chamber of directional blasting tube, explosive cartridge and detonator are filled with the inner chamber of directional blasting tube, a floor height compression molding material film is wrapped up on the outer peripheral face of directional blasting tube, energy release aperture is covered by high-pressure plastic film, the top of directional blasting tube is connected with for blocking blasthole in explosion time to prevent the first blocking component that bomb fragments up spray along blasthole.The orientation hydraulic pressure concentrates demolition set by remaining in the water coincidence in blasthole and coal seam after detonation gas and hydraulic fracturing operations, the cranny development degree in coal seam can be greatly improved, and the device is before explosion without toward filling yellow mud volume in blasthole, operation is very easy.
Description
Technical field
The present invention relates to the anti-reflection technical field in coal seam, more particularly to a kind of orientation hydraulic pressure collection for being used to improve gas permeability of coal seam
Borehole blasting device.
Background technology
It is all high methane and coal and gas outburst mine to have more than half in existing colliery.Gas is general in two forms
Preservation is in coal seam, i.e. adsorbed state and free state.In the gas amount of ocurrence of coal seam, usual adsorption gas amount accounts for 90%
More than, and free gas amount only has 10% or so.When seam mining, gas the disturbing with seam mining that is trapped in coal seam
Move and constantly discharge, it, which endangers, is mainly manifested in three aspects：Gas asphyxiation, gas explosion, coal and gas prominent.
According to statistics, in China's coal-mine accident, more than 40% is gas explosion accident, wherein in serious accident, gas explosion accident
Account for more than 82%.
In the prior art, domestic and foreign scholars have carried out substantial amounts of research work in terms of gas control, achieve certain
Achievement, and form the effective measures of some preventing and treating Gas Disasters.Wherein, gas pumping technology is considered as prevention Gas Disaster
One of most efficient method.However, with the increase of seam mining depth, coal seam gas-bearing capacity increases, pressure increases, and coal seam is saturating
Gas is low, so as to have a strong impact on the extraction rate of coal-bed gas and extracting result.
Anti-reflection is the key technology for solving the hypotonic coal bed gas extraction efficiency in China and safety in production, is increased to improve coal seam
Saturating effect, coal in China scientific worker propose Deephole pre-splitting blasting, exploitation protective layer, hydraulic fracturing, water in recent decades
A variety of release anti-reflection methods such as power slotting, hydraulic flushing in hole, hydraulic slotted liner technique, but the technical conditions and technique due to part measure are not
Perfect, antireflective effect is unsatisfactory.
It is anti-reflection that Chinese patent literature " CN103321669A " discloses a kind of deep hole orientation presplit blasting lower permeability seam
Method, it uses the method for the vertical joint-cutting pipe of four-way joint-cutting pipe vertical with powder stick and four-way and water bag spaced loading, passes through quick-fried life
Gas forms coupling with water, forms " wedge effect " to coalmass crevasse jointly, wedges coalmass crevasse, crack is further expanded
Exhibition, extends action time of the detonation gas to coalmass crevasse, and radial direction waveform fissure zone is then formed around drilling, obtains
Preferable antireflective effect.But in practical application, used by this method also there is following defect in demolition set：1st, it is
Avoid substantial amounts of bomb fragments from up being sprayed along blasthole, need to be rolled up and blocked with yellow mud in the range of away from aperture 10m, filled out toward blasthole
The workload for filling in yellow mud volume is larger.2nd, demolition set is only placed into the operation of blasthole bottom, in the case of coal seam is thicker（Such as
10m is thick）, bottom explosion is very limited to the anti-reflection effect at the top of coal seam.3rd, the water in water bag is less, water and detonation gas coupling
" the wedge effect " that conjunction is formed is limited, and effect still has much room for improvement.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of orientation hydraulic pressure collection borehole blasting for being used to improve gas permeability of coal seam
Device, the orientation hydraulic pressure concentrate demolition set by remaining in the water in blasthole and coal seam after detonation gas and hydraulic fracturing operations
Coupling, the cranny development degree in coal seam can be greatly improved, and the device need not be yellow toward filling in blasthole before explosion
Mud is rolled up, and operation is very easy.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that, a kind of to be used to improve gas permeability of coal seam
Orient hydraulic pressure and concentrate demolition set, including directional blasting tube, the directional blasting tube both ends are sealed by cover plate, in the orientation
It is spaced apart on the outer peripheral face of blasting cartridge and is provided with multiple energy release apertures, the energy release aperture and the inner chamber phase of directional blasting tube
It is logical, explosive cartridge and detonator are filled with the inner chamber of the directional blasting tube, one is wrapped up on the outer peripheral face of the directional blasting tube
Floor height compression molding material film, the energy release aperture are covered by high-pressure plastic film, and the top of the directional blasting tube is connected with
For blocking blasthole in explosion time to prevent the first blocking component that bomb fragments up spray along blasthole, the first closure group
Part includes hollow tubular body, and the top of the tubular body is provided with top cover, dividing plate is provided with the inner chamber of the tubular body,
The inner chamber of tubular body is separated into the connecting cavity positioned at its side and the pressure chamber positioned at its opposite side, the company by the dividing plate
Connect the side wall of chamber and the top periphery face of directional blasting tube is provided with the screw connection structure being mutually matched, the directional blasting tube
Top screw in connecting cavity in be fixedly connected with tubular body, be further opened with the outer peripheral face of the tubular body by pressure chamber with
The pressure channel of external world's connection, the top cover windowing of the tubular body are simultaneously embedded with luffer boards moving up and down, institute in the window
State and multiple hinge ears be equipped with top cover and luffer boards, the hinge ear on hinge ear and luffer boards on the top cover two-by-two in groups, every group of hinge ear
On be hinged a claw, up movement can make claw turn up to open and insert in blasthole wall the luffer boards, described so as to avoid
First blocking component is gone out because of blast impulse from blasthole.
Wherein, one piece of elastic glued membrane is additionally provided with the pressure chamber, the elastic glued membrane is under the top cover of tubular body
Side simultaneously covers the window opened up on top cover, and the periphery of the elastic glued membrane is fixedly connected with top cover.
Further, it is also coated with a circle elastic sealant in the elastic glued membrane periphery and top cover joint.
Preferably, first blocking component also includes being set in the elastic wear-resisting gum cover outside tubular body, the bullet
Property wear-resisting gum cover gradually expand flare and its top from top to bottom and be fixedly connected with the top of tubular body, the pressure chamber
Interior to be provided with bearing and limition orientation bar, the bearing is horizontally disposed with, and the limition orientation bar is vertically arranged, the bearing with it is spacing
Guide rod is slidably connected and can moved up and down along limition orientation bar, and more support bars, the tubulose sheet are hinged with the bearing
Multiple otch are offered on body, the other end of the support bar stretches out from otch and is hinged on elastic wear-resisting gum cover inwall,
When the bearing up moves, the support bar can be overturn outward to be supportted big and it is suppressed blasthole outward by elastic wear-resisting gum cover
Wall.
Further, a through hole is offered on the dividing plate vertically, is opened up on the cover plate on the directional blasting tube top
There is threading hole, threading hole, through hole, pressure chamber and pressure channel pass outward successively for the wire of igniting the detonator.
Preferably, the second blocking component, the knot of second blocking component are installed in the bottom of the directional blasting tube
Structure is identical with the structure of the first blocking component, and the attachment structure of second blocking component and directional blasting tube bottom is also with first
Blocking component is identical with the attachment structure on directional blasting tube top.
Or the 3rd blocking component is installed in the bottom of the directional blasting tube, during the 3rd blocking component includes
Empty tubular body, the top of the tubular body is provided with top cover, dividing plate, the dividing plate is provided with the inner chamber of the tubular body
The inner chamber of tubular body is separated into the connecting cavity positioned at its side and the pressure chamber positioned at its opposite side, the side of the connecting cavity
The bottom periphery face of wall and directional blasting tube is provided with the screw connection structure being mutually matched, the bottom rotation of the directional blasting tube
Enter in connecting cavity and be fixedly connected with tubular body, is further opened with the outer peripheral face of the tubular body with pressure chamber is connected with extraneous
Logical pressure channel, the tubular body outer cover are provided with elastic wear-resisting gum cover, and the elastic wear-resisting gum cover is gradual from lower to upper
Expand flare and its bottom is fixedly connected with the bottom of tubular body, bearing and limition orientation are provided with the pressure chamber
Bar, the bearing are horizontally set on the lower section of pressure channel and its week edge and abut against the cavity wall of pressure chamber, the limition orientation bar
It is vertically arranged, the bearing is slidably connected with limition orientation bar and can moved up and down along limition orientation bar, is hinged on the bearing
There are more support bars, multiple otch are offered on the tubular body, the other end of the support bar stretches out and cut with scissors from otch
It is connected on elastic wear-resisting gum cover inwall, when the bearing moves down, the support bar can be overturn elastic wear-resisting gum cover outward
Support is big outward and it is suppressed blasthole wall.
As a preferred embodiment, the directional blasting tube includes multiple drug-filling cavities being spaced apart, each fill out
Explosive cartridge and detonator are filled with medicine cavity, the detonator is electric cap, and all electric caps are sequentially connected in series by wire, all to fill out
The front, rear, left and right four direction of medicine cavity respectively offers the energy release aperture of a strip.
Further, the plummet provided with a back taper is hung below the 3rd blocking component.
Further, the orientation hydraulic pressure for being used to improve gas permeability of coal seam concentrates demolition set also to include initiator, hang
Rope and unwrapping wire roller, the wire for connecting electric cap are connected with initiator, the top of the tail end connection directional blasting tube of the lifting rope, institute
The head end of lifting rope is stated around being located on unwrapping wire roller, a fixed pulley is additionally provided between the unwrapping wire roller and directional blasting tube, it is described
Lifting rope is ridden on fixed pulley, rotates the unwrapping wire roller toward during release lifting rope, the object gravity of suspention is made in lifting rope lower end in blasthole
Under, the lifting rope is tensioned and drives fixed pulley to rotate as it gradually discharges so that the plummet and directional blasting tube
Gradually sink down into the water in blasthole.
During practical application, hydraulic fracturing anti-reflection first is carried out to coal seam, then again will be provided by the present invention for improving coal seam
The orientation hydraulic pressure of gas permeability concentrates demolition set to be put into blasthole, can be in blasthole and cracks in coal seam after hydraulic fracturing operations
Water is remained, the water remained in blasthole does not have to extract out, to ensure more preferable antireflective effect, is preferably maintained in water level face higher than on coal seam
More than portion 2m, should be again toward water filling in blasthole if the liquid level of residual water is inadequate so that water level face 2m on coal seam,
When above-mentioned orientation hydraulic pressure, which concentrates demolition set to be put into, to be ignited in water, because high-pressure plastic film covers energy release aperture, fry
The energy that powder stick explosion time is formed can't discharge immediately, but can first assemble the effect to form a kind of " saving up strength "（It can improve
Impulsive force caused by instant of detonation）, it is thin when the explosion energy of accumulation reaches capacity to break through high-pressure plastic from energy release aperture
Film and concentrate discharge（Released energy along energy release aperture orientation concentration）, to the blasthole wall of the residual water in blasthole and surrounding
Produce huge impact, detonation gas is with forming " wedge effect " impact blasthole wall after water coincidence, so that from blasthole wall toward coal seam
New crack is internally formed, further, since water is incompressible, the water being had been enter into originally after hydraulic pressure presplitting is anti-reflection in coal seam is quick-fried
Cracks in coal seam development degree can be further improved under the pressure effect of angry body toward the sprawling of coal seam deeper inside.In summary, with the back of the body
Demolition set in scape technology is compared, and when the orientation hydraulic pressure concentrates demolition set ignition, water couples the " point to be formed with detonation gas
The effect of splitting " will be apparent from, and can advantageously promote cracks in coal seam development.
Because the present invention on the top of directional blasting tube is connected with the first blocking component, when directional blasting tube is ignited, greatly
The detonation gas of amount enters in pressure chamber with aqueous mixtures from pressure channel, pressure in pressure cavity rise so that luffer boards are past to be moved up
Dynamic, during luffer boards up move, claw, which turns up, to be opened and inserts in blasthole wall, so as to avoid the first blocking component because of blast
Impact gone out from blasthole, above-mentioned first blocking component be blocked in blasthole can play it is similar with yellow mud volume in background technology
Effect, can obstruct bomb fragments and up be sprayed along blasthole.Certainly, to better ensure that plugging effect, during practical application, first
The size of tubular body is designed preferably based on blasthole size in blocking component, is ensureing that orientation hydraulic pressure collection demolition set can
It is smooth be put into blasthole on the premise of, the diameter and blasthole diameter of tubular body are closer, and the plugging effect of the first blocking component is got over
It is good.Due to the presence of above-mentioned first blocking component, the orientation hydraulic pressure collection demolition set is before explosion without toward clogging in blasthole
Yellow mud is rolled up, and operation is more convenient.
Brief description of the drawings
Fig. 1 is the overall structure diagram of embodiment 1；
Fig. 2 is the overall structure diagram of embodiment 2；
Fig. 3 is the internal structure schematic diagram of directional blasting tube in embodiment 1 and embodiment 2；
Fig. 4 is the use state figure for carrying out anti-reflection operation to coal seam with involved orientation hydraulic pressure concentration demolition set of the invention；
Fig. 5 is the partial enlarged drawing at A positions in Fig. 1；
Fig. 6 is the partial enlarged drawing at A positions in Fig. 2；
In figure：
1 --- directional blasting tube 2 --- explosive cartridge 3 --- detonator
4 --- high pressure expects film 5 --- the first blocking component 6 --- second blocking component
7 --- the 3rd blocking component 8 --- plummet 9 --- initiators
10 --- lifting rope 11 --- unwrapping wire roller 12 --- fixed pulleys
1a --- energy release aperture 1b --- drug-filling cavity 5a --- tubular bodies
5b --- luffer boards 5c --- hinge ear 5d --- claws
5e --- elastic glued membrane 5f --- elastic wear-resisting covers 5g --- bearings
5h --- limition orientation bar 5i --- support bar 5a1 --- top covers
5a2 --- dividing plate 5a3 --- connecting cavity 5a4 --- pressure chambers
5a5 --- pressure channel 5a2a --- through hole.
Embodiment
For the ease of the understanding of those skilled in the art, the present invention is made with reference to specific embodiment and accompanying drawing further
Explanation.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", "left", "right",
The orientation or position relationship of the instruction such as " top ", " bottom ", " interior ", " outer ", " being higher than ", " being less than " are all based on side shown in the drawings
Position or position relationship.In addition, in the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " company
Connect ", the term such as " fixation " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be joined directly together, can also be indirectly connected by intermediary, for the ordinary skill in the art,
The concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Embodiment 1：
Fig. 1,3 and 5 show that the involved orientation hydraulic pressure for being used to improve gas permeability of coal seam of the present embodiment concentrates the specific of demolition set
Structure, it includes directional blasting tube 1, and the both ends of directional blasting tube 1 are sealed by cover plate, on the outer peripheral face of directional blasting tube 1 between
Separate and be provided with multiple energy release aperture 1a, energy release aperture 1a communicates with the inner chamber of directional blasting tube 1, in directional blasting tube 1
Explosive cartridge 2 and detonator 3 are filled with inner chamber, a floor height compression molding material film 4 is wrapped up on the outer peripheral face of directional blasting tube 1, energy is released
Discharge hole 1a is covered by high-pressure plastic film 4, and the top of directional blasting tube 1 is connected with for blocking blasthole in explosion time to prevent
The first blocking component 5 that bomb fragments up spray along blasthole, the first blocking component 5 include hollow tubular body 5a, tubulose
Body 5a top is provided with top cover 5a1, is provided with dividing plate 5a2 in tubular body 5a inner chamber, dividing plate 5a2 is by tubular body 5a
Chamber is separated into the connecting cavity 5a3 positioned at its side and pressure chamber 5a4 positioned at its opposite side, connecting cavity 5a3 side wall and orientation
The top periphery face of blasting cartridge 1 is provided with the screw connection structure being mutually matched, and the top of directional blasting tube 1 screws in connecting cavity
It is fixedly connected in 5a3 with tubular body 5a, is further opened with what pressure chamber 5a4 was in communication with the outside on tubular body 5a outer peripheral face
Pressure channel 5a5, tubular body 5a top cover 5a1 windowings are simultaneously embedded with luffer boards 5b moving up and down, top cover 5a1 in the window
And hinge ear 5c on the hinge ear 5c on multiple hinge ear 5c, top cover 5a1 and luffer boards 5b is equipped with luffer boards 5b two-by-two in groups, every group of hinge
On ear 5c be hinged a claw 5d, luffer boards 5b up movement can make claw 5d turn up open and insert in blasthole wall, so as to keep away
Exempt from first blocking component 5 because blast impulse is gone out from blasthole.
During practical application, hydraulic fracturing anti-reflection first is carried out to coal seam, above-mentioned orientation hydraulic pressure is then concentrated into demolition set again
It is put into blasthole, after hydraulic fracturing operations, water can be remained in blasthole and cracks in coal seam, the water remained in blasthole does not have to take out
Go out, to ensure more preferable antireflective effect, be preferably maintained in water level face and be higher than more than coal seam top 2m, if the liquid level of residual water is not
It is enough, then should be again toward water filling in blasthole so that water level face 2m on coal seam, when the orientation hydraulic pressure concentrates demolition set to be put into water
During middle ignition, because high-pressure plastic film 4 covers energy release aperture 1a, the energy that the explosion time of explosive cartridge 2 is formed can't
Discharge immediately, but can first assemble the effect to form a kind of " saving up strength "（Impulsive force caused by instant of detonation can be improved）, work as accumulation
Explosion energy high-pressure plastic film 4 can be broken through when reaching capacity from energy release aperture 1a and is concentrated discharge（Released along energy
Discharge hole orientation concentration releases energy）, produce huge impact to the blasthole wall of the residual water in blasthole and surrounding, detonation gas with
" wedge effect " impact blasthole wall is formed after water coincidence, so as to be internally formed new crack from blasthole wall toward coal seam, further, since
Water is incompressible, originally can be toward coal seam in the case where having been enter into pressure effect of the water in coal seam in detonation gas after hydraulic pressure presplitting is anti-reflection
Deeper inside spreads, and further improves cracks in coal seam development degree.Therefore compared with the demolition set in background technology, the orientation hydraulic pressure
When concentrating demolition set ignition, water couples " the wedge effect " to be formed with detonation gas and will be apparent from, and can advantageously promote
Cracks in coal seam is developed.
Because the top of foregoing directional blasting tube 1 is connected with the first blocking component 5, when directional blasting tube 1 is ignited, largely
Detonation gas and aqueous mixtures enter from pressure channel 5a5 in pressure chamber 5a4, pressure rise in pressure chamber 5a4 so that luffer boards
5b is up moved, and during luffer boards 5b is up moved, claw 5d, which turns up, to be opened and insert in blasthole wall, so as to avoid the first envelope
Because blast impulse is gone out from blasthole, above-mentioned first blocking component 5 is blocked in blasthole and can played and background technology blocking component 5
Middle yellow mud rolls up similar effect, can obstruct bomb fragments and up be sprayed along blasthole.Certainly, to better ensure that plugging effect,
During practical application, tubular body 5a size is designed preferably based on blasthole size in the first blocking component 5, is ensureing that this is fixed
On the premise of smooth being put into blasthole to hydraulic pressure collection demolition set, tubular body 5a diameter and blasthole diameter is closer, the
The plugging effect of one blocking component 5 is better.Due to the presence of above-mentioned first blocking component 5, the orientation hydraulic pressure collection demolition set exists
Without more convenient toward filling yellow mud volume, operation in blasthole before explosion.
To improve the air-tightness on luffer boards 5b and top cover 5a1 between institute's windowing, the pressure at explosion time window position is reduced
It is lost in, one piece of elastic glued membrane 5e is additionally provided with above-mentioned pressure chamber 5a4, elastic glued membrane 5e is located at tubular body 5a top cover 5a1
Lower section simultaneously covers on top cover 5a1 the window opened up, and elastic glued membrane 5e periphery is fixedly connected with top cover 5a1.Further, also
Can be in elastic glued membrane 5e peripheries and the circle elastic sealant of top cover 5a1 joints coating one.
To reduce the loss of pressure between explosion time tubular body 5a outer peripheral faces and blasthole wall, the first closure is further improved
The plugging effect of component 5, above-mentioned first blocking component 5 also include being set in the elastic wear-resisting gum cover 5f outside tubular body 5a,
Elastic wear-resisting gum cover 5f gradually expands flare from top to bottom and its top is fixedly connected with tubular body 5a top, pressure
Bearing 5g and limition orientation bar 5h is provided with chamber 5a4, bearing 5g is horizontally disposed with, and limition orientation bar 5h is vertically arranged, bearing 5g with
Limition orientation bar 5h is slidably connected and can moved up and down along limition orientation bar 5h, and more support bar 5i are hinged with bearing 5g,
Multiple otch are offered on tubular body 5a, the support bar 5i other end stretches out from otch and is hinged on elastic wear-resisting gum cover 5f
On inwall, when bearing 5g is up moved, support bar 5i can be overturn outward to be supportted greatly and makes its top pressure outward by elastic wear-resisting gum cover 5f
Firmly blasthole wall.
Preferably, a through hole 5a2a, the cover plate on the top of directional blasting tube 1 are also offered vertically on the dividing plate 5a2
On offer threading hole, for igniting the wire of the detonator 3 threading hole, through hole 5a2a, pressure chamber 5a4 and pressure channel successively
5a5 is passed outward.So it can both allow to wear wire more convenient, while detonation gas caused by the explosion time of explosive cartridge 2
It can be entered more quickly in pressure chamber 5a4 by threading hole and through hole 5a2a so that luffer boards 5b is up moved in time, first
Claw 5d is strutted and inserted in blasthole wall by the time, preferably avoids the first blocking component 5 because blast impulse is along blasthole toward moving up
It is dynamic.
In the case of concentrating demolition set to be suspended in bursting work in the middle part of blasthole orientation hydraulic pressure（It is quick-fried to orient hydraulic pressure concentration
Breaking device does not drop down onto blasthole bottom）, to prevent explosion time directional blasting tube 1 from moving down, cause blast pressure to concentrate work
Used in the default position of blasthole（Such as coal seam depth reaches 10m, and now only need to carry out anti-reflection work to the coal seam of middle part
Industry, it is possible to demolition set is suspended to the middle part in coal seam, it is caused if explosion time directional blasting tube 1 moves down
Blast pressure, which cannot be concentrated, acts on coal seam middle part, and understands some loss of pressure to bottom, causes explosion
Operation can not reach default effect）, the second blocking component 6, the second blocking component 6 are also equipped with the bottom of directional blasting tube 1
Structure it is identical with the structure of the first blocking component 5, the attachment structure of the second blocking component 6 and the bottom of directional blasting tube 1 also with
First blocking component 5 is identical with the attachment structure on the top of directional blasting tube 1.
Embodiment 2：
As shown in Fig. 2,3 and 6, embodiment 2 and the difference of embodiment 1 essentially consist in the closure group that the bottom of directional blasting tube 1 is connected
Part structure and embodiment 1 are different, and specifically, in the present embodiment, the 3rd closure group is installed in the bottom of directional blasting tube 1
Part 7, the 3rd blocking component 7 also include hollow tubular body 5a, and tubular body 5a top is provided with top cover 5a1, tubular body
Be provided with dividing plate 5a2 in 5a inner chamber, dividing plate 5a2 by tubular body 5a inner chamber be separated into positioned at its side connecting cavity 5a3 and
Positioned at the pressure chamber 5a4 of its opposite side, connecting cavity 5a3 side wall and the bottom periphery face of directional blasting tube 1 are provided with mutual
The screw connection structure matched somebody with somebody, the bottom of directional blasting tube 1 is screwed in connecting cavity 5a3 to be fixedly connected with tubular body 5a, tubulose sheet
It is arranged outside the pressure channel 5a5 for being further opened with body 5a outer peripheral face and pressure chamber 5a3 being in communication with the outside, tubular body 5a
Flexible wear-resisting gum cover 5f, elastic wear-resisting gum cover 5f gradually expand flare from lower to upper and its bottom is with tubular body 5a's
Bottom is fixedly connected, and is provided with bearing 5g in pressure chamber 5a3 and limition orientation bar 5h, bearing 5g are horizontally set on pressure channel 5a5
Lower section and be vertically arranged along pressure chamber 5a3 cavity wall, limition orientation bar 5h is abutted against in its week, bearing 5g and limition orientation bar 5h
It is slidably connected and can be moved up and down along limition orientation bar 5h, more support bar 5i is hinged with bearing 5g, are opened on tubular body 5a
Provided with multiple otch, the support bar 5i other end stretches out from otch and is hinged on elastic wear-resisting gum cover 5f inwalls, bearing 5g
When moving down, support bar 5i can be overturn outward to be supportted big and it is suppressed blasthole wall outward by elastic wear-resisting gum cover 5f.Enter one
Step ground, the plummet 8 provided with a back taper is also hung in the lower section of the 3rd blocking component 7.
As a kind of preferable structure, as shown in Figure 3, in the above two embodiments, directional blasting tube 1 include it is multiple that
Explosive cartridge 2 and detonator 3 are filled with this drug-filling cavity 1b, each drug-filling cavity 1b for separating, wherein, detonator 3 is electric cap, is owned
Electric cap is sequentially connected in series by wire, and all drug-filling cavity 1b front, rear, left and right four direction respectively offers a strip
The energy release aperture 1a of shape.
Further, as shown in Figure 4, the involved orientation hydraulic pressure of above-mentioned two embodiment concentrates demolition set also to include detonation
Device 9, lifting rope 10 and unwrapping wire roller 11, the wire for connecting electric cap are connected with initiator 9, the tail end connection directional blasting tube of lifting rope 10
1 top, the head end of lifting rope 10 are additionally provided with one between unwrapping wire roller 11 and directional blasting tube 1 and determined around being located on unwrapping wire roller 11
Pulley 12, lifting rope 10 are ridden on fixed pulley 12, are rotated unwrapping wire roller 11 toward when discharging lifting rope 10 in blasthole, are suspended in midair in the lower end of lifting rope 10
Object Action of Gravity Field under, lifting rope 10 be tensioned and with its gradually release and drive fixed pulley 12 to rotate so that directional blasting
Pipe 1 is gradually sunk down into the water in blasthole.It should be noted that in the present invention, orientation hydraulic pressure concentrates demolition set not must
Above-mentioned initiator 9, lifting rope 10, unwrapping wire roller 11 and fixed pulley 12 must be included, can also be put it into using other modes in blasthole
The anti-reflection operation of explosion is carried out, in addition, concentrate demolition set to include an initiator nor each orienting hydraulic pressure, it is actual
Using when, can with it is multiple orientation hydraulic pressure concentrate demolition sets share an initiator, for detonator 3 using blasting cap in the case of,
Fuse cord should be used by igniting the wire of blasting cap, and now can does not use initiator to detonate, and can lead fire by lighting
Rope carrys out detonating primer 3.
Finally it is emphasized that in order to allow those of ordinary skill in the art more easily to understand the present invention relative to existing
The improvements of technology, some accompanying drawings of the invention and description have been simplified, and for the sake of clarity, present specification is also
Some other elements are eliminated, those of ordinary skill in the art should be aware that these elements omitted also may make up the present invention's
Content.
Claims (10)
1. the orientation hydraulic pressure for improving gas permeability of coal seam concentrates demolition set, including directional blasting tube（1）, the directional blasting
Pipe（1）Both ends are sealed by cover plate, in the directional blasting tube（1）Outer peripheral face on be spaced apart be provided with multiple energy release apertures
（1a）, the energy release aperture（1a）With directional blasting tube（1）Inner chamber communicate, in the directional blasting tube（1）Inner chamber in
It is filled with explosive cartridge（2）And detonator（3）, it is characterised in that：The directional blasting tube（1）Outer peripheral face on wrap up a floor height compression moulding
Expect film（4）, the energy release aperture（1a）By high-pressure plastic film（4）Cover, the directional blasting tube（1）Top connect
It is connected to for blocking blasthole in explosion time to prevent the first blocking component that bomb fragments up spray along blasthole（5）, described
One blocking component（5）Including hollow tubular body（5a）, the tubular body（5a）Top be provided with top cover（5a1）, it is described
Tubular body（5a）Inner chamber in be provided with dividing plate（5a2）, the dividing plate（5a2）By tubular body（5a）Inner chamber be separated into and be located at
The connecting cavity of its side（5a3）With the pressure chamber positioned at its opposite side（5a4）, the connecting cavity（5a3）Side wall and orientation it is quick-fried
Broken pipe（1）Top periphery face be provided with the screw connection structure that is mutually matched, the directional blasting tube（1）Top screw in connect
Connect chamber（5a3）In with tubular body（5a）It is fixedly connected, the tubular body（5a）Outer peripheral face on be further opened with pressure chamber
（5a4）The pressure channel being in communication with the outside（5a5）, the tubular body（5a）Top cover（5a1）Open a window and be embedded in the window
There are luffer boards moving up and down（5b）, the top cover（5a1）And luffer boards（5b）On be equipped with multiple hinge ears（5c）, the top cover
（5a1）On hinge ear（5c）With luffer boards（5b）On hinge ear（5c）Two-by-two in groups, every group of hinge ear（5c）On be hinged a claw
（5d）, the luffer boards（5b）Up movement can make claw（5d）Turn up and open and insert in blasthole wall, so as to avoid described first
Blocking component（5）Because blast impulse is gone out from blasthole.
2. the orientation hydraulic pressure according to claim 1 for being used to improve gas permeability of coal seam concentrates demolition set, it is characterised in that：
The pressure chamber（5a4）Inside it is additionally provided with one piece of elastic glued membrane（5e）, the elastic glued membrane（5e）Located at tubular body（5a）Top
Lid（5a1）Lower section simultaneously covers top cover（5a1）On the window that opens up, the elastic glued membrane（5e）Periphery and top cover（5a1）Gu
Fixed connection.
3. the orientation hydraulic pressure according to claim 2 for being used to improve gas permeability of coal seam concentrates demolition set, it is characterised in that：
The elastic glued membrane（5e）Periphery and top cover（5a1）Joint is coated with a circle elastic sealant.
4. the orientation hydraulic pressure collection borehole blasting dress for being used to improve gas permeability of coal seam according to any one in claim 1-3
Put, it is characterised in that：First blocking component（5）Also include being set in tubular body（5a）Outside elastic wear-resisting gum cover
（5f）, the elastic wear-resisting gum cover（5f）Gradually expand flare and its top and tubular body from top to bottom（5a）Top
It is fixedly connected, the pressure chamber（5a4）It is interior to be provided with bearing（5g）And limition orientation bar（5h）, the bearing（5g）It is horizontally disposed,
The limition orientation bar（5h）It is vertically arranged, the bearing（5g）With limition orientation bar（5h）It is slidably connected and can be along limition orientation
Bar（5h）Move up and down, the bearing（5g）On be hinged with more support bars（5i）, the tubular body（5a）On offer it is more
Individual otch, the support bar（5i）The other end stretched out from otch and be hinged on elastic wear-resisting gum cover（5f）It is described on inwall
Bearing（5g）When up moving, the support bar（5i）It can overturn elastic wear-resisting gum cover outward（5f）Support outward is big and makes its top
Push down blasthole wall.
5. the orientation hydraulic pressure according to claim 4 for being used to improve gas permeability of coal seam concentrates demolition set, it is characterised in that：
The dividing plate（5a2）On offer a through hole vertically（5a2a）, the directional blasting tube（1）Offer and wear on the cover plate on top
String holes, for igniting the detonator（3）Wire threading hole, through hole successively（5a2a）, pressure chamber（5a4）And pressure channel
（5a5）Pass outward.
6. the orientation hydraulic pressure collection borehole blasting dress for being used to improve gas permeability of coal seam according to any one in claim 1-3
Put, it is characterised in that：The directional blasting tube（1）Bottom the second blocking component is installed（6）, second blocking component
（6）Structure and the first blocking component（5）Structure it is identical, second blocking component（6）With directional blasting tube（1）Bottom
Attachment structure also with the first blocking component（5）With directional blasting tube（1）The attachment structure on top is identical.
7. the orientation hydraulic pressure collection borehole blasting dress for being used to improve gas permeability of coal seam according to any one in claim 1-3
Put, it is characterised in that：The directional blasting tube（1）Bottom the 3rd blocking component is installed（7）, the 3rd blocking component
（7）Also hollow tubular body is included（5a）, the tubular body（5a）Top be provided with top cover（5a1）, the tubular body
（5a）Inner chamber in be provided with dividing plate（5a2）, the dividing plate（5a2）By tubular body（5a）Inner chamber be separated into positioned at its side
Connecting cavity（5a3）With the pressure chamber positioned at its opposite side（5a4）, the connecting cavity（5a3）Side wall and directional blasting tube（1）'s
Bottom periphery face is provided with the screw connection structure being mutually matched, the directional blasting tube（1）Bottom screw in connecting cavity（5a3）
In with tubular body（5a）It is fixedly connected, the tubular body（5a）Outer peripheral face on be further opened with by pressure chamber（5a3）With
The pressure channel of external world's connection（5a5）, the tubular body（5a）Outer cover is provided with elastic wear-resisting gum cover（5f）, the elasticity is resistance to
Grind gum cover（5f）Gradually expand flare and its bottom and tubular body from lower to upper（5a）Bottom be fixedly connected, the pressure
Power chamber（5a3）It is interior to be provided with bearing（5g）And limition orientation bar（5h）, the bearing（5g）It is horizontally set on pressure channel（5a5）'s
Lower section and its week is along abutting against pressure chamber（5a3）Cavity wall, the limition orientation bar（5h）It is vertically arranged, the bearing（5g）With
Limition orientation bar（5h）It is slidably connected and can be along limition orientation bar（5h）Move up and down, the bearing（5g）On be hinged with more branch
Strut（5i）, the tubular body（5a）On offer multiple otch, the support bar（5i）The other end stretched out from otch
And it is hinged on elastic wear-resisting gum cover（5f）On inwall, the bearing（5g）When moving down, the support bar（5i）Past it can turn up
Turn elastic wear-resisting gum cover（5f）Support is big outward and it is suppressed blasthole wall.
8. the orientation hydraulic pressure collection borehole blasting dress for being used to improve gas permeability of coal seam according to any one in claim 1-3
Put, it is characterised in that：The directional blasting tube（1）Including multiple drug-filling cavities being spaced apart（1b）, each drug-filling cavity（1b）It is interior
It is filled with explosive cartridge（2）And detonator（3）, the detonator（3）For electric cap, all electric caps are sequentially connected in series by wire, institute
There is drug-filling cavity（1b）Front, rear, left and right four direction respectively offer the energy release aperture of a strip（1a）.
9. the orientation hydraulic pressure according to claim 7 for being used to improve gas permeability of coal seam concentrates demolition set, it is characterised in that：
3rd blocking component（7）Lower section hang the plummet provided with a back taper（8）.
10. the orientation hydraulic pressure according to claim 8 for being used to improve gas permeability of coal seam concentrates demolition set, its feature exists
In：Also include initiator（9）, lifting rope（10）And unwrapping wire roller（11）, connect the wire and initiator of electric cap（9）Connection, it is described
Lifting rope（10）Tail end connection directional blasting tube（1）Top, the lifting rope（10）Head end around being located at unwrapping wire roller（11）On,
The unwrapping wire roller（11）With directional blasting tube（1）Between be additionally provided with a fixed pulley（12）, the lifting rope（10）Ride over fixed pulley
（12）On, rotate the unwrapping wire roller（11）Lifting rope is discharged into blasthole（10）When, in lifting rope（10）The object gravity of lower end suspention
Under effect, the lifting rope（10）It is tensioned and drives fixed pulley as it gradually discharges（12）Rotate so that the orientation is quick-fried
Broken pipe（1）Gradually sink down into the water in blasthole.
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| CN201710962225.9A CN107503726B (en) | 2017-10-17 | 2017-10-17 | Directional water pressure centralized blasting device for improving coal seam air permeability |
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| CN201710962225.9A CN107503726B (en) | 2017-10-17 | 2017-10-17 | Directional water pressure centralized blasting device for improving coal seam air permeability |
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| CN109596021A (en) * | 2018-12-10 | 2019-04-09 | 贵州大学 | A kind of demolition set with directional blasting mechanism |
| CN110529090A (en) * | 2019-09-25 | 2019-12-03 | 高九华 | One kind is impulsed pressure break coal petrography permeability improvement device and method with blasting fume shock wave |
| CN110541696A (en) * | 2019-07-15 | 2019-12-06 | 河南理工大学 | carbon dioxide blasting-hydraulic fracturing reconstruction yield increasing method for oil and gas well |
| CN115199251A (en) * | 2022-06-02 | 2022-10-18 | 中国石油大学(北京) | Fracturing method for carbonate rock geothermal reservoir |
| CN116045737A (en) * | 2023-02-27 | 2023-05-02 | 湖南科技大学 | Spacing adjustable prefabricated blasting tube and installation method thereof |
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| CN116045737A (en) * | 2023-02-27 | 2023-05-02 | 湖南科技大学 | Spacing adjustable prefabricated blasting tube and installation method thereof |
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