CN106839911B - The blasting method of axial progressive secondary efficient demolition set and device - Google Patents
The blasting method of axial progressive secondary efficient demolition set and device Download PDFInfo
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- CN106839911B CN106839911B CN201710026409.4A CN201710026409A CN106839911B CN 106839911 B CN106839911 B CN 106839911B CN 201710026409 A CN201710026409 A CN 201710026409A CN 106839911 B CN106839911 B CN 106839911B
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- 238000005422 blasting Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 43
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- 238000004880 explosion Methods 0.000 claims abstract description 162
- 239000002360 explosive Substances 0.000 claims abstract description 85
- 230000000694 effects Effects 0.000 claims abstract description 40
- 239000011435 rock Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000003111 delayed effect Effects 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 37
- 238000002955 isolation Methods 0.000 claims description 33
- 239000003814 drug Substances 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 230000001186 cumulative effect Effects 0.000 claims description 20
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 20
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- General Engineering & Computer Science (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of blasting methods of the progressive secondary efficient demolition set of axial direction,This method is that explosive cartridge is mounted in attached blasthole and attached blasthole is completely cut off with outside air,And by setting gradually level-one explosion main body and two level explosion main body in explosive cartridge,Level-one explosion main body carries out initial explosion,Rock mass is set crack occur,Rock loosening etc.,Level-one explosion main body generates huge Explosive impact wave and acts on and push two level explosion main body is progressive to pierce in deep rock mass,In the case where being delayed the effect of explosive in two level explosion main body,Generate the secondary progressive explosion of Millisecond delay,The present invention mainly utilizes short-delay blasting,Play bottom blasting technique,Water spacer blasting technique is designed,Reduce blasting vibration,Reduce bulk amount,Reduce explosive specific charge amount and dust concentration,Increase the utilization rate of borehole,Increase demolition effect,With shotfiring safety.
Description
Technical field
The present invention relates to blasting technique field, the blasting method of especially a kind of progressive secondary efficient demolition set of axial direction
And device.
Background technology
Currently, during the tunnel construction in China, there are no large-scale uses for mechanical drivage, do not reach flourishing horizontal,
Blasting technique especially drilling and blasting method is the major way of China's tunnel construction, but the utilization rate of borehole is low in the driving in tunnel,
Demolition effect unobvious, low wait a moment of tunnelling footage efficiency is main difficulty, and difficulty of construction is very big.
The mine of complex geologic conditions is especially in the process of coal mining in China, digging laneway and seam mining constantly pass through
Rock mass and the coal seam that special thickness can often be encountered, since existing demolition set explosive energy utilization rate is low, blast hole utilization factor is low to wait singles
Explosion keeps the tunnelling footage in tunnel slow with progress, and demolition effect is poor, and the explosive of blasthole bottom makes the rock mass in axial deep
At function and effect unobvious, depth in tunneling process cannot be further increased.In addition the synthesis of hard special thick gas top coal layer
In exploitation, the stress in coal seam how to be allowed to redistribute, makes to form crack in coal seam, so that the methane drainage and utilization project rate of gas is improved, subtract
Few production cost.
Invention content
The technical problem to be solved by the present invention is to：A kind of explosion side of the progressive secondary efficient demolition set of axial direction is provided
Method and device, low with the blast hole utilization factor for solving existing demolition set, demolition effect is poor.
The invention is realized in this way：
A kind of blasting method of the progressive secondary efficient demolition set of axial direction, this method are that explosive cartridge is mounted on attached big gun
In hole and attached blasthole is completely cut off with outside air, and quick-fried by setting gradually level-one explosion main body and two level in explosive cartridge
Broken main body, level-one explosion main body carry out initial explosion, make crack occurs in rock mass, rock loosens etc., level-one explosion main body generates huge
Big Explosive impact wave acts on and pushes two level explosion main body is progressive to pierce in deep rock mass, is delayed in two level explosion main body
Under the effect of explosive, the secondary progressive explosion of Millisecond delay is generated.
In a kind of blasting method of the progressive secondary efficient demolition set of axial direction above-mentioned, realize attached after explosive cartridge is installed
The specific method completely cut off in blasthole is made of the explosive cartridge using plastic cement material, and its both sides is double layer hollow structure, and top is
Inlet valve is arranged in hollow sandwich bottom end side in one layer of sealing plate, bottom end blow-by, in hollow sandwich top side ventilating cover,
And between ventilating cover and hollow sandwich be arranged uniaxial pressure air outlet valve, in inoperative in hollow sandwich be vacuum, be housed to attached
After belonging to blasthole, water is connected to and injected into hollow structure with inlet valve using compression pump 22, under hydraulic pressure effect, inside and outside explosive cartridge
Wall meeting expanse is broken off drilling and is contacted with the air in the external world until attached blasthole is all closed, to avoid compression pump 22 from pressing
There is gas to enter influence demolition effect in explosive cartridge after entering water, it is uniaxial pressure air outlet valve that right side top, which has inside ventilating cover, single
Connect gas-guide tube to pressure air outlet valve, extend in air, can discharge excess pressure amount when explosion cylinder pressure reaches level pressure and
Definite value is kept, stops indentation water when trickle in gas-guide tube.
In a kind of blasting method of the progressive secondary efficient demolition set of axial direction above-mentioned, level-one explosion main body and two is realized
The method of grade explosion main body Millisecond delay explosion is to be arranged one in funnel shaped level-one medicine cover, in level-one in level-one explosion main body
The steel pipe that rigidity isolation block is set in one is installed in medicine cover upper end, and on two level explosion main body installation steel pipe, wherein rigidity isolation
Block is corresponding with the striker of two level explosion main body, when level-one leads the level-one of quick-fried lead and the first powder chamber bottom in body in level-one explosion
It leads when quick-fried detonator is connected and ignites so that it can generate the effect of bottom explosion, level-one medicine cover mainly generates cumulative in infundibulate
Explosion wave, shock wave are propagated in the space one between level-one medicine cover and rigidity isolation block, and isolation block can be made to generate kinetic energy
And prevent induced detonation from generating, second level explosion main body is impacted, two level explosion main body will not be i.e. quick-fried under the action of plastic base, touches
Have the striker that spring connects, hot localised points generated, by two level det-cord) ignite delay explosive, and delay will produce short-delay time, from
And two level explosion main body is exploded, and short-delay blasting effect is generated.
In a kind of blasting method of the progressive secondary efficient demolition set of axial direction above-mentioned, realize that two level explosion main body is secondary
Progressive blasting method is that the two level explosion main body cover uses bullet shaped structure, can be produced to rock mass after level-one explosion main body explosion
Raw loosening, seminess, and level-one medicine cover generates immense pressure and the effect of cavity blasting shock wave in the level-one explosion main body
In rigidly completely cutting off block, the dead huge kinetic energy of rigidity isolation block fan, which hits two level explosion body base, can be such that two level explosion main body pierces
Rock mass with crack or loosening, and realize secondary blasting under the action of delay explosive in two level explosion main body.
A kind of demolition set of the progressive secondary efficient demolition set of axial direction, including explosive cartridge, level-one explosion main body and two
Grade explosion main body is sequentially arranged in explosive cartridge and the tail portion of level-one explosion main body and two level explosion body front end corresponding matching,
In the explosive cartridge be made of plastic material, both sides are double layer hollow structure, and hollow sandwich is vacuum when original state, and top is
One layer of sealing plate, bottom end blow-by and is arranged internal thread on the inside of explosive cartridge, and inlet valve is arranged in hollow sandwich bottom end side,
Hollow sandwich top side ventilating cover, uniaxial pressure air outlet valve one end are connected to ventilating cover, and the other end is stretched out outer by gas-guide tube
Portion is simultaneously connected to extraneous air.
In a kind of demolition set of the aforementioned progressive secondary efficient demolition set of axial direction, the level-one explosion main body includes one
Grade threaded base, level-one exploding wire, level-one lead quick-fried detonator, level-one medicine cover, steel pipe, rigidity isolation block, the first powder chamber and first
Cumulative powder column, two level explosion main body include two level threaded base, spring, striker, and two level is ignited detonator, two level det-cord, delay
Explosive, two level explosion main body cover and two level cumulative powder column, which is located in the middle part of explosive cartridge, in the first explosive
The first cumulative powder column is expired in indoor filling, and step of threads pedestal and the step of threads pedestal explosive cartridge is arranged in the first powder chamber bottom end
Mutual cooperation is tightened, and level-one is arranged in the first cumulative powder column and leads quick-fried detonator, and level-one exploding wire one end connection level-one leads quick-fried detonator,
The other end passes through step of threads pedestal and stretches out explosive cartridge, and funnel shaped level-one medicine cover, outer diameter are arranged at the top of the first powder chamber
The size steel pipe consistent with the first powder chamber along while withstand on level-one medicine cover along while on, in steel pipe be arranged rigidity isolation block and should
Rigidity isolation block forms space one with level-one medicine cover, and the two level explosion main body cover of bullet shaped is arranged in the middle part of explosive cartridge, two
Two level threaded base is arranged in two level explosion main body cover bottom end in the full two level cumulative powder column of filling in grade explosion main body cover, should
Two level threaded base bottom surface is held out against with steel pipe along side each other, and the two level threaded base, steel pipe and rigidity isolation block form space
Two, the setting delay explosive in two level cumulative powder column, interior setting two level is ignited detonator in the middle part of two level threaded base, and two level is led quick-fried
Line one end connection delay explosive, other end connection two level are ignited detonator, are ignited in the two level threaded base below detonator in two level
Shallow slot is set, and spring on spring is arranged striker and the striker and the two level detonator that ignites are vertical right across in shallow slot and fixed
Together, plate is hit less than two level threaded base bottom surface and in space two on the striker bottom.
In a kind of demolition set of the aforementioned progressive secondary efficient demolition set of axial direction, chuck is set in steel pipe inside middle portion
And rigidity isolation block upper end avoids rigidly completely cutting off block movement when inoperative with chuck clamping, improves safety.
By adopting the above-described technical solution, compared with prior art, the present invention mainly utilizes short-delay blasting, bottom is played
Blasting technique, water spacer blasting technique are designed, and reduce blasting vibration, reduce bulk amount, reduce explosive specific charge amount and dust
Concentration, increase the utilization rate of borehole, increase demolition effect and shotfiring safety.
Description of the drawings
Attached drawing 1 is the structural schematic diagram of the present invention；
Attached drawing 2 is operation chart when borehole blasting device of the present invention is mounted on attached blasthole；
Attached drawing 3 is the application schematic diagram of the present invention.
Specific implementation mode
The embodiment of the present invention：A kind of blasting method of the progressive secondary efficient demolition set of axial direction, this method is will be quick-fried
Broken cylinder is mounted in attached blasthole and attached blasthole is completely cut off with outside air, and by setting gradually level-one in explosive cartridge
Explosion main body and two level explosion main body, level-one explosion main body carry out initial explosion, make rock mass occur crack, rock loosen etc., one
Grade explosion main body generates huge Explosive impact wave and acts on and push two level explosion main body is progressive to pierce in deep rock mass, positioned at two
In grade explosion main body under the effect of delay explosive, the secondary progressive explosion of Millisecond delay is generated.
Realize that the specific method completely cut off in attached blasthole after installation explosive cartridge is made of the explosive cartridge using plastic cement material, and
Its both sides is double layer hollow structure, and top is one layer of sealing plate, and bottom end blow-by is arranged in hollow sandwich bottom end side and intakes
In hollow sandwich top side ventilating cover, and uniaxial pressure air outlet valve is arranged, in inoperative in valve between ventilating cover and hollow sandwich
When hollow sandwich in be vacuum, after being housed to attached blasthole, be connected to inlet valve using compression pump 22 and noted into hollow structure
Enter water, hydraulic pressure effect under, explosive cartridge inside and outside wall can expanse, until attached blasthole all close, break off drilling with outside
The air on boundary contacts, and has gas to enter after water to influence demolition effect in explosive cartridge to avoid compression pump 22 from being pressed into, right side top has
It is uniaxial pressure air outlet valve inside ventilating cover, uniaxial pressure air outlet valve connects gas-guide tube, extends in air, explosion cylinder pressure
Excess pressure amount can be discharged when reaching level pressure and keeps definite value, stop indentation water when trickle in gas-guide tube.
The method for realizing level-one explosion main body and two level explosion main body Millisecond delay explosion is arranged in level-one explosion main body
One is in funnel shaped level-one medicine cover, and the steel pipe that rigidity isolation block is set in one is installed in level-one medicine cover upper end, and the two level is quick-fried
On broken main body installation steel pipe, wherein rigidity isolation block is corresponding with the striker of two level explosion main body, when level-one in body in level-one explosion
Quick-fried lead and the level-one of the first powder chamber bottom is led to lead when quick-fried detonator is connected and ignites so that it can generate the effect of bottom explosion
Fruit, level-one medicine cover mainly generate cavity blasting shock wave in infundibulate, and shock wave is between level-one medicine cover and rigidity isolation block
It is propagated in space one, isolation block can be made to generate kinetic energy and prevents induced detonation from generating, second level explosion main body is impacted, in plastic base
The lower two level explosion main body of effect will not be i.e. quick-fried, touches the striker for having spring to connect, hot localised points is generated, by two level det-cord) draw
Combustion delay explosive, delay will produce short-delay time, to which two level explosion main body is exploded, generate short-delay blasting effect.
Realize that the secondary progressive blasting method of two level explosion main body is that the two level explosion main body cover uses bullet shaped structure,
Loosening, seminess can be generated after level-one explosion main body explosion to rock mass, and the generation of level-one medicine cover is poly- in the level-one explosion main body
The immense pressure of energy explosion wave simultaneously acts on rigidity isolation block, which fans dead huge kinetic energy and hit two level explosion
Body base can make two level explosion main body pierce the rock mass with crack or loosening, and the delay explosive in two level explosion main body
Under the action of realize secondary blasting, into rock mass depth may due to the hardness of rock mass it is different, can be according to specific work
It is that effect becomes apparent from that Cheng Jinhang, which calculates research level-one explosion main body and the explosive charge of two level explosion main body, but as long as two level explosion master
Body, which can enter rock mass, to generate great function to deep rock mass, because generating elementary errors under the action of delay explosive (18), to
Carry out subsequent explosion.
Two level explosion main body has fine and close threaded connection with pedestal, and preventing rigidity from completely cutting off block shock makes two level explosion bulk deformation
It is i.e. quick-fried, play cushioning effect.Rigidity isolation block act as prevent induced detonation from generating, steel pipe and rigidity isolation block it is recyclable repeat profit
With, carry out subsequent explosion, level-one explosion it is similar with common demolition effect, mainly subsequent explosion under same explosive charge,
The explosive effect of the present apparatus is more preferable, and the style of work becomes apparent from multiple blastholes together
It is formed by a kind of demolition set of the progressive secondary efficient demolition set of axial direction according to the above method, such as attached drawing institute
Show, including explosive cartridge 21, level-one explosion main body and two level explosion main body are sequentially arranged in explosive cartridge 21 and level-one explosion main body
Tail portion and two level explosion body front end corresponding matching, the wherein explosive cartridge 21 is made of plastic material, during both sides are double-deck
Hollow structure, hollow sandwich is vacuum when original state, and top is one layer of sealing plate, bottom end blow-by and is set in 21 inside of explosive cartridge
Internal thread is set, inlet valve 7, ventilating cover 9, uniaxial pressure outlet in hollow sandwich top side are set in hollow sandwich bottom end side
8 one end of valve is connected to ventilating cover 9, and the other end stretches out outside by gas-guide tube 11 and is connected to extraneous air.
The wherein level-one explosion main body includes step of threads pedestal 1, level-one exploding wire 2, and level-one leads quick-fried detonator 3, level-one medicine
Cover 4, steel pipe 5, rigidity completely cut off block 6, and the first powder chamber 10 and the first cumulative powder column 12, two level explosion main body include two level screw thread bottom
Seat 13, spring 14, striker 15, two level are ignited detonator 16, two level det-cord 17, and be delayed explosive 18, two level explosion main body cover 19
With two level cumulative powder column 20, which is located at 21 middle part of explosive cartridge, the filling full first in the first powder chamber 10
Cumulative powder column 12, setting step of threads pedestal 1 and 1 explosive cartridge of step of threads pedestal, the 21 phase interworking in 10 bottom end of the first powder chamber
Conjunction is tightened, and setting level-one leads quick-fried detonator 4 in the first cumulative powder column 12, and 2 one end of level-one exploding wire connection level-one leads quick-fried detonator 3,
The other end passes through step of threads pedestal 1 and stretches out explosive cartridge 21, and funnel shaped level-one medicine cover is arranged at 10 top of the first powder chamber
4, the outer diameter steel pipe 5 consistent with the first powder chamber 10 along while withstand on level-one medicine cover 4 along while on, setting is rigid in the steel pipe 5
Sexual isolation block 6 and the rigidity isolation block 6 and the formation of level-one medicine cover 4 space one, the setting of two level explosion main body cover 19 of bullet shaped
At 21 middle part of explosive cartridge, the full two level cumulative powder column 20 of filling in two level explosion main body cover 19, in two level explosion main body cover
Two level threaded base 13 is arranged in 19 bottom ends, which holds out against with steel pipe 5 along side each other, and the two level screw thread
Pedestal 13, steel pipe 5 and rigidity isolation block 6 form space two, the setting delay explosive 18 in two level cumulative powder column 20, in two level spiral shell
Setting two level is ignited detonator 16 in the middle part of line pedestal 13,17 one end of two level det-cord connection delay explosive 18, other end connection two
Grade is ignited detonator 16, ignites in two level and shallow slot is arranged in the two level threaded base 13 below detonator 16, spring 14 is across in shallow slot
It is interior and fixed, on spring striker 15 is set and the striker and two level are ignited 16 vertical alignment of detonator, on 15 bottom of striker
Plate is hit less than 13 bottom surface of two level threaded base and in the space two, 5 inside middle portion of steel pipe chuck 30 is set and the rigidity every
Exhausted 6 upper end of block avoids rigidly completely cutting off the movement of block 6 when inoperative with 30 clamping of chuck.
The above method and device are applied to a kind of blasting method of the explosion of efficient demolition set, and this method passes through drilling point
Not Xing Cheng explosion main armament hole and attached blasthole, which is arranged around explosion main armament hole, and abundance is put into main armament hole
Explosive, place demolition set in attached blasthole, using short-delay blasting, make main armament hole elder generation's detonation in rock around
Body can generate demolition effect to deep rock mass, that is, generate rock-mass relaxing, crackle and change of stress field, then attached around main armament hole
Belong to blasthole to detonate successively, can be completed in axial progressive deep rock mass by the two level explosion main body of demolition set in attached blasthole
Blasting work.
Wherein the main armament hole depth is more than attached blast hole depth, and general main borehole depth can be more than 2/3 two level explosion master
The length of phosphor bodies can be also calculated according to specific project situation to determine the dosage of explosion main body explosive and the depth of borehole
Size is spent, the method for ignition by placing demolition set in attached blasthole is the level-one explosion master by being arranged in demolition set
Body carries out initial explosion, and crack occurs in rock mass, rock loosens etc., level-one explosion main body is made to generate huge Explosive impact wave effect simultaneously
It pushes next to level-one explosion body tail section and the two level explosion main body that is arranged in demolition set is progressive pierces in deep rock mass,
Under the effect of delay explosive (18), the subsequent explosion of Millisecond delay is generated.
It is formed by a kind of blasting arrangement of the explosion of efficient demolition set according to the above method, as shown in the picture, including
Main armament hole 26 is arranged, around main armament hole 26 successively in the geology part 25 of required explosion on the geology part 25 of required explosion
Attached blasthole 23 is set, and demolition set 28 is arranged in attached blasthole 23, and passes through ignition for the explosive 27 in main armament hole 26
Main armament hole 26 and attached blasthole 23 are together in series by line 29 successively.
Wherein the demolition set 29 includes explosive cartridge 21, and level-one explosion main body and two level explosion main body are sequentially arranged at explosion
In the cylinder 21 and tail portion of level-one explosion main body and two level explosion body front end corresponding matching.
When specifically used
Sufficient explosive is first put in main blast hole, attached blast hole is put into the present apparatus, and leading quick-fried lead with one connects
Come, keep main armament hole first quick-fried using short-delay blasting, acting on surrounding rock body makes deep rock mass generate loosening, crack, change of stress field
Deng, then around attached blasthole detonate successively, time sequencing one<Two<Three<Four, the demolition effect of secondary blasthole and main armament hole
Effect is almost the same.Small with dosage, demolition effect is good, feature at low cost.
This demolition set is put into borehole, is pressed into water by one-way water inlet valve 7, explosive cartridge is made to expand, until borehole is sealed
It closes, breaks off in drilling contacting with extraneous air, form water spacer explosion, light level-one exploding wire, cause in the first powder chamber
The level-one of bottom leads the explosion of quick-fried detonator, and cumulative powder column is made to explode since bottom, has generated the effect of bottom explosion；Level-one explosion
The principle of main body reference bottom hole explosion can improve demolition effect and driving speed, and shotfiring safety increases, rock mass ambient side by
To water coincidence detonation, hard force is uniformly distributed, and sillar is small and more uniform more rule, and demolition effect is good, while to surrounding
The Stress Field Distribution of rock mass, rock mass structure generate great function, and loosening and crack etc. are its performances.In level-one explosion main body explosion
Have certain function and effect to rock mass afterwards, phenomena such as crack, loosening occurs, the immense pressure of cavity blasting shock wave is in level-one
It is propagated in medium (air) in space one between medicine cover and rigidity isolation block, shock makes it in rigidly completely cutting off block
The energy of shock wave is converted into the huge kinetic energy of isolation block.Isolation block can break through in steel pipe the kick for fixing initial position,
And two level explosion main body is hit, make in its progressive drilling crack or relaxed rockmass.Two level explosion main body has densification with pedestal
It is threadedly coupled, pedestal material is the work that plastic material plays buffering, prevents two level explosion main body from being exploded immediately by collision deformation
With, elementary errors is generated because being delayed under the action of explosive, subsequent explosion is carried out in the rock mass in deep, generates short-delay blasting effect, it can
The effect slungshot for reducing vibration is reduced, and explosive energy utilization rate is high, and blast hole utilization factor is high and has effectiveness in vibration suppression.
The description of said program is the invention being intended to facilitate those of ordinary skill in the art to understand and use, and is familiar with
The personnel of art technology obviously easily can make various modifications to embodiment, and therefore, the present invention is not limited to above-mentioned realities
Scheme, those skilled in the art according to the method for the present invention, all should by improvement and modification made without departing from the scope of the present invention
Within protection scope of the present invention.
Claims (7)
1. a kind of blasting method of the progressive secondary blasting device of axial direction, it is characterised in that：This method is to be mounted on explosive cartridge
In attached blasthole and attached blasthole is completely cut off with outside air, and by set gradually in explosive cartridge level-one explosion main body and
Two level explosion main body, level-one explosion main body carry out initial explosion, and rock mass is made crack, rock loosening, the production of level-one explosion main body occur
Raw huge Explosive impact wave acts on and pushes two level explosion main body is progressive to pierce in deep rock mass, in two level explosion main body
It is delayed under the effect of explosive, generates the secondary progressive explosion of Millisecond delay.
2. a kind of blasting method of the progressive secondary blasting device of axial direction according to claim 1, it is characterised in that：It realizes
It is made of the explosive cartridge using plastic cement material to install the specific method completely cut off in attached blasthole after explosive cartridge, and its both sides is bilayer
Hollow structure, top are one layer of sealing plate, and inlet valve is arranged in hollow sandwich bottom end side, in hollow sandwich in bottom end blow-by
Top side ventilating cover, and uniaxial pressure air outlet valve is set between ventilating cover and hollow sandwich, in inoperative in hollow sandwich
For vacuum, after being housed to attached blasthole, it is connected to inlet valve using compression pump (22) and injects water into hollow structure, in hydraulic pressure
Under effect, the meeting expanse of explosive cartridge inside and outside wall breaks off drilling and the air in the external world connects until attached blasthole is all closed
It touches, there is gas to enter influence demolition effect in explosive cartridge to avoid compression pump (22) from being pressed into after water, right side top has in ventilating cover
Portion is uniaxial pressure air outlet valve, and uniaxial pressure air outlet valve connects gas-guide tube, extends in air, explosion cylinder pressure reaches level pressure
When can discharge excess pressure amount and keep definite value, when trickle in gas-guide tube stop indentation water.
3. a kind of blasting method of the progressive secondary blasting device of axial direction according to claim 1, it is characterised in that：It realizes
Level-one explosion main body and the method for two level explosion main body Millisecond delay explosion are to be arranged one in infundibulate in level-one explosion main body
Level-one medicine cover, level-one medicine cover upper end install one in set rigidity isolation block steel pipe, and the two level explosion main body install steel
Guan Shang, wherein rigidity isolation block is corresponding with the striker of two level explosion main body, when level-one leads quick-fried lead and the in body in level-one explosion
The level-one of one powder chamber bottom is led when quick-fried detonator is connected and ignites so that it can generate the effect of bottom explosion, and level-one medicine cover is in
Infundibulate mainly generates cavity blasting shock wave, and shock wave is propagated in the space one between level-one medicine cover and rigidity isolation block,
Isolation block can be made to generate kinetic energy and prevent induced detonation from generating, impact second level explosion main body, two level is quick-fried under the action of plastic base
Broken main body will not be i.e. quick-fried, touch have spring connect striker, generate hot localised points, by two level det-cord ignite delay explosive, prolong
When will produce short-delay time, to two level explosion main body explode, generate short-delay blasting effect.
4. a kind of blasting method of the progressive secondary blasting device of axial direction according to claim 1, it is characterised in that：It realizes
The secondary progressive blasting method of two level explosion main body is that the two level explosion main body cover uses bullet shaped structure, in level-one explosion main body
Loosening, seminess can be generated after explosion to rock mass, and level-one medicine cover generates cavity blasting shock wave in the level-one explosion main body
Immense pressure and act on rigidity isolation block, the dead huge kinetic energy shock two level explosion body base of rigidity isolation block fan can make
Two level explosion main body pierces the rock mass with crack or loosening, and is realized under the action of delay explosive in two level explosion main body
Secondary blasting.
5. a kind of demolition set of the progressive secondary blasting device of axial direction, including explosive cartridge (21), it is characterised in that：Level-one explosion
Main body and two level explosion main body are sequentially arranged in explosive cartridge (21) and before the tail portion of level-one explosion main body and two level explosion main body
Corresponding matching is held, the wherein explosive cartridge (21) is made of plastic material, and both sides are double layer hollow structure, and when original state is hollow
Interlayer is vacuum, and top is one layer of sealing plate, bottom end blow-by and the setting internal thread on the inside of explosive cartridge (21), in hollow sandwich
Inlet valve (7) is arranged in bottom end side, in hollow sandwich top side ventilating cover (9), uniaxial pressure air outlet valve (8) one end with it is ventilative
(9) connection is covered, the other end is stretched out external and is connected to extraneous air by gas-guide tube (11).
6. the demolition set of the progressive secondary blasting device of a kind of axial direction according to claim 5, it is characterised in that：Described one
Grade explosion main body includes step of threads pedestal (1), and level-one exploding wire (2), level-one leads quick-fried detonator (3), level-one medicine cover (4), steel pipe
(5), rigidity isolation block (6), the first powder chamber (10) and the first cumulative powder column (12), two level explosion main body include two level screw thread bottom
Seat (13), spring (14), striker (15), two level are ignited detonator (16), two level det-cord (17), and delay explosive (18), two level is quick-fried
Broken main body cover (19) and two level cumulative powder column (20), first powder chamber are located in the middle part of explosive cartridge (21), fried first
The full first cumulative powder column (12) of filling in coyote hole (10), in the first powder chamber (10) bottom end setting step of threads pedestal (1) and is somebody's turn to do
Step of threads pedestal (1) explosive cartridge (21) mutual cooperation is tightened, and setting level-one leads quick-fried detonator (3 in the first cumulative powder column (12)
), level-one exploding wire (2) one end connection level-one leads quick-fried detonator (3), and the other end passes through step of threads pedestal (1) and stretches out explosive cartridge
(21), funnel shaped level-one medicine cover (4) is set at the top of the first powder chamber (10), and outer diameter and the first powder chamber (10) are consistent
Steel pipe (5) along while withstand on level-one medicine cover (4) along while on, in the steel pipe (5) setting rigidity isolation block (6) and this rigidly completely cut off
Block (6) forms space one with level-one medicine cover (4), and the two level explosion main body cover (19) of bullet shaped is arranged in explosive cartridge (21)
Portion, the full two level cumulative powder column (20) of filling in two level explosion main body cover (19), in two level explosion main body cover (19) bottom end
Two level threaded base (13) is set, which holds out against with steel pipe (5) along side each other, and the two level screw thread
Pedestal (13), steel pipe (5) and rigidity isolation block (6) form space two, the setting delay explosive in two level cumulative powder column (20)
(18), in the middle part of the two level threaded base (13) in setting two level ignite detonator (16), the connection delay of two level det-cord (17) one end
Explosive (18), other end connection two level are ignited detonator (16), are ignited the two level threaded base (13) below detonator (16) in two level
Upper setting shallow slot, spring (14) are arranged striker (15) on spring and the striker ignite with two level across in shallow slot and fixed
Detonator (16) vertical alignment, hitting plate less than two level threaded base (13) bottom surface and being located at space two on striker (15) bottom
It is interior.
7. the demolition set of the progressive secondary blasting device of a kind of axial direction according to claim 6, it is characterised in that：In steel pipe
(5) inside middle portion setting chuck (30) and when rigidity isolation block (6) upper end and chuck (30) clamping avoid inoperative rigidly every
Exhausted block (6) is mobile.
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| CN106643308A (en) * | 2017-02-10 | 2017-05-10 | 贵州大学 | Axial progressive secondary efficient blasting device and installation method |
| CN108413826B (en) * | 2018-01-18 | 2024-02-13 | 中国矿业大学 | Deep hole loosening blasting device and method |
| CN112161536B (en) * | 2020-09-25 | 2022-12-13 | 安徽省恒金矿业有限公司 | Blasting device for limestone mine and blasting method thereof |
| CN112902779A (en) * | 2021-03-02 | 2021-06-04 | 钱国臣 | Mine blasting explosive placing equipment |
| CN113959277A (en) * | 2021-11-10 | 2022-01-21 | 北京理工大学 | Multifunctional tank cannonball |
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| CN206670477U (en) * | 2017-01-13 | 2017-11-24 | 贵州大学 | The axially demolition set of laddering secondary efficiently demolition set |
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| US6684791B1 (en) * | 2000-06-08 | 2004-02-03 | Charles R. Barnhart | Shaped charge detonation system and method |
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| US5198615A (en) * | 1992-03-24 | 1993-03-30 | Alliant Techsystems Inc. | Fuzing system for tandem demolition warheads |
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| CN103968721A (en) * | 2014-05-26 | 2014-08-06 | 武汉大学 | Hole bottom energy gathering and dissipating device suitable for inclined blast hole and capable of improving blasting excavation flatness of foundation surface |
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