CN208476097U - Complex reflex cumulative and buffering energy dissipator - Google Patents
Complex reflex cumulative and buffering energy dissipator Download PDFInfo
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- CN208476097U CN208476097U CN201821045561.3U CN201821045561U CN208476097U CN 208476097 U CN208476097 U CN 208476097U CN 201821045561 U CN201821045561 U CN 201821045561U CN 208476097 U CN208476097 U CN 208476097U
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Abstract
The utility model belongs to engineering explosion technical field, complex reflex cumulative and buffering energy dissipator include the buffering energy dissipating bed course successively laid from bottom to up, rigid bed course, reflection cumulative cushion and energy-gathering jetting device, and buffering energy dissipating bed course includes cylindrical steel shell and the low-density being filled in outer steel shell buffering energy dissipating core；Rigid bed course is fixedly connected with above buffering energy dissipating bed course；Reflection cumulative cushion has been bolted above rigid bed course；The periphery of reflection cumulative cushion is laid with energy-gathering jetting device.The energy-gathering jetting and reflection energy-gathering jetting that the bus of energy-gathering jetting device and reflection cumulative cushion generates when explosive initiation have dual cumulative action, can increase the horizontal break line of blasthole floor rocks, enhance demolition effect.The composite cushion for reflecting cumulative cushion, rigid bed course and buffering energy dissipating bed course composition, has energy dissipating buffer function three times, can cut down explosion energy, reduces the explosion damage of blasthole bottom, guarantees bottom hole rock quality.
Description
Technical field
The utility model belongs to engineering explosion technical field, and in particular to used in the complex reflex cumulative of blasthole bottom and slow
Rush energy dissipator.
Background technique
The rock Dam Base Surface of hydraulic and hydroelectric engineering, riding track side slope, tunnel bottom plate protective level blasting excavation be always
Difficult point in engineering explosion construction.In existing blasting technique, traditional Long-hole Bench Blasting often reserves the protection of 1~2m thickness
Then layer carries out protective level blasting excavation with small-bore drilling and small medicine coil again, the artificial clear sled of finally cooperation reaches foundation plane height
Journey, construction efficiency is very low, and it is larger to retain Rock Damage to bottom hole；The effect of horizontal presplit or horizontal smooth surface Blasting Excavation compares
It is good, but bore that lateral aperture difficulty is larger, every time before drilling must quick-fried slag before free face clean clearly, it is troublesome in poeration, and once bored
The limitation of hole length, area of explosion is limited, and construction efficiency is lower, is unable to satisfy large area and excavates schedule requirement.Bottom hole setting
The Millisecond blasting with small interval of common flexible cushion, since flexible cushion material and structure are not reasonable, to Blasting shock wave
Relaxation effect is smaller, and bottom hole damage of rock is still larger, the foundation plane big rise and fall that explosion goes out, sometimes secondary there is still a need for carrying out
Explosion or artificial mechanism are prized clearly；When using common CUMULATIVE BLASTING, since the length that cumulative blasting penetrates rock mass is shorter, the water of formation
Plane fracture gap cannot further be expanded, and rock-breaking effect is poor, be not easy to form smooth excavation face.How water power work is controlled
The dam rock foundation plane of journey, riding track side slope, the molding excavation quality of tunnel bottom plate carry out the layer explosion of step unprotect and open
It digs, realize enhancing demolition effect and mitigates explosion to the detrimental effect of rock, realize the unification of catalase and protection, improve quick-fried
Broken operating efficiency, is current urgent problem.
Summary of the invention
For existing blasting technique and demolition set rock Dam Base Surface, riding track side slope, tunnel bottom plate guarantor
When sheath excavates, the uncontrollable deficiency of quality, it is high, easy to process that the utility model provides a kind of security performance, easily operated,
Reliable performance, it is easy for construction, the explosion damage of blasthole bottom can be effectively reduced, guarantees quality, it is flat to improve foundation plane explosion
Whole degree, the complex reflex cumulative for enhancing the blasthole bottom for foundation plane unprotect layer Blasting Excavation of blasting efficiency disappear with buffering
It can dress.
To achieve the above object, the utility model uses following technical scheme:
The utility model is provided to be mounted on for the complex reflex cumulative and buffering energy dissipator, the device of blasthole bottom
On the screed-coat of blasthole bottom, including the buffering energy dissipating bed course, rigid bed course, reflection cumulative cushion successively laid from bottom to up
With energy-gathering jetting device；The buffering energy dissipating bed course includes cylindrical steel shell and the low-density being filled in outer steel shell buffering energy dissipating
Core；Rigid bed course is fixedly connected with above buffering energy dissipating bed course, the rigid bed course is circular slab；It is bolted above rigid bed course
There is reflection cumulative cushion, reflection cumulative cushion is gradually expanded from top to bottom in horn-like structure；Reflect cumulative buffering
The periphery of bed course is laid with energy-gathering jetting device, and energy-gathering jetting device includes cumulative cavity liner, waveform adjuster, flexible linear-shaped charge and cumulative
Explosive initiation body；The cumulative cavity liner is thin walled shell, and the cumulative cavity liner dumb-bell shape that thick, middle part is tapered in both ends gathers
Top inside energy cavity liner is laid with waveform adjuster, and the waveform adjuster is in the funnel-form that bus is curve and is set on
Reflect the peripheral surface on cumulative cushion top.
Further, the outer diameter and the outer diameter of rigid bed course, the outer diameter phase of energy-gathering jetting device bottom of the buffering energy dissipating bed course
Deng, three is 0.8~0.9 times of blasthole diameter so that complex reflex cumulative and buffering energy dissipator be smoothly put into blasthole
It is interior；The internal diameter of energy-gathering jetting device bottom is equal with the reflection outer diameter of cumulative cushion bottom.
Further, the high 20~30cm of the buffering energy dissipating bed course, 2~4mm of cylindrical steel shell thickness, by steel circular pipe
Material is made；The density that low-density buffers energy dissipating core is 0.6~0.9kg/cm3, by the material aerating foam concrete of low-density, swollen
Swollen vermiculite or expanded perlite cement concrete or blast furnace cement concrete are made.Low-density buffers the two of energy dissipating core and outer steel shell
A end flushes, and fills closely knit.It is welded with rigid bed course bottom at the top of outer steel shell, strength glue sticking or screw connection.
Further, the rigid bed course is solid construction, 1~2cm of thickness.The center of rigid bed course is laid with the spiral shell of diameter 10mm
Keyhole, rigid bed course are made of the high-intensitive stiff materials such as steel, cast iron or cast steel.
Further, the angle between the bus and bottom of the reflection cumulative cushion is the angle α, and the angle α is 60 °
~70 °, the height of reflection cumulative cushion is the product of 1/2 and tan α of its base diameter.Reflect cumulative cushion by
Rigid material is made, and there is the bolt hole of a diameter 10mm in reflection cumulative cushion bottom centre, passes through pin bolt, reflection
Cumulative cushion is connected with the bolt hole of rigid bed course bottom.Reflection cumulative cushion top is provided with wearing for a diameter 5mm
Cord hole, for wearing tow.It is high-strength to reflect cumulative cushion steel, cast iron, cast steel, high strength steel fibre concrete or steel slag
The high-strength materials processing and fabricating such as concrete.
Further, the height of the cumulative cavity liner is equal with the reflection height of cumulative cushion, cumulative cavity liner
Lower end be set in reflection cumulative cushion bottom periphery, cumulative cavity liner with a thickness of 1~1.5mm, cumulative cavity liner
It is made of copper sheet, iron sheet or pvc sheet plastic；Primacord perforation, waveform adjuster top are laid in the waveform adjuster
Diameter it is identical with the internal diameter on cumulative cavity liner top, and its top flushed with cumulative cavity liner, material be plastics or nylon
Equal inert materials.Flexible linear-shaped charge is filled between the reflection cumulative cushion and energy-gathering jetting device, the flexible linear-shaped charge is
Industrial emulsion explosive or industrial powdered ammonium nitrate explosive, uniformly distributed in flexible linear-shaped charge to have flexible linear-shaped charge detonating material, the cumulative is fried
The primacord of medicine detonating material includes 1~4 piece of millisecond detonator, connect with detonator 1~2 cyclic annular primacord and detonator, the biography
Quick-fried line is the payment to a porter in millisecond detonator, is plastic detonating tube, and one end connects millisecond detonator, the other end of flexible linear-shaped charge detonating material
It leads to outside blasthole and is connected to main blasting circuit, the main function of primacord is that propagation of explosion detonation wave ignites millisecond detonator detonating material.
Complex reflex cumulative and buffering energy dissipator are by reflection cumulative cushion, energy-gathering jetting device, rigid bed course and buffering
Energy dissipating bed course forms overall structure, and total height is 25~35cm.
The effect of buffering energy dissipating bed course is: the shock wave and explosion high pressure transmitted from reflection cumulative cushion and rigid bed course
Gas further weakens the damage to rock mass is retained using further absorption, buffering, the energy dissipating of buffering energy dissipating bed course.
Outer steel shell plays the role of skeletal support, the impact and pressure of shock wave and explosion high pressure gas that receiving top is transmitted, in guarantee
Big variation does not occur for portion's component initial position, guarantees Explosive impact jet stream and reflects Explosive impact jet stream to the rock of same area
Body carries out repeated stock leaching and cuts, and enhances demolition effect.Outer steel shell, which can stop to weaken, enters rushing in low-density buffering energy dissipating core
It hits wave and high pressure gas and is spread to side rock and impacted.The low-density buffered in energy dissipating bed course buffers energy dissipating core, since density is low
It is slow to conduct velocity of wave, plays the role of absorbing and weakens shock wave, reduces rock damage.
The effect of rigid bed course: association reflex cumulative cushion, energy-gathering jetting device and buffering energy dissipating bed course play isolation and cut
The damage of impact-reducing wave, explosion high pressure gas to rock mass is retained, extends the fragmentation time of explosion high pressure gas rock mass.
Reflection cumulative cushion effect: reflection cumulative cushion is gradually expanded from top to bottom in horn-like structure, tool
There are the reflection and cumulative action of shock wave, high pressure gas, can carry out repetitious impact grinding to rock mass, high-intensitive,
Horn-like structure constitutes the bed course of rigidity, can play reflection, buffering, stop shock wave and high pressure gas to the work of rock
With mitigation retains the damage of rock mass.
The effect of energy-gathering jetting device: having cumulative action, and the energy-gathering jetting of generation can penetrate rock and form longer water
Plane fracture seam.
The effect of flexible linear-shaped charge: it forms flank speed and moves energy-gathering jetting, worn with very high energy density, great intensity
The circumferential surrounding blasthole rock mass of saturating side, leaching, which is cut, to be formed longer circular horizontal and splits fracture surface, so that foundation plane is retained rock smooth.
The effect of flexible linear-shaped charge detonating material: detonation flexible linear-shaped charge detonates while realizing flexible linear-shaped charge each point, increases cumulative
The explosion velocity of explosive, the further intensity for increasing energy-gathering jetting.
The effect of cumulative cavity liner: in the powder column explosion time of flexible linear-shaped charge, energy is along powder column to central axis direction height collection
In, the explosion energy of explosive is converted into the kinetic energy of cumulative cavity liner, forms extremely strong Explosive impact jet stream, improves cumulative effect
Fruit, to rock formed it is very strong penetrate leaching and cut ability, so that rock is generated longer horizontal annular crack, increase demolition effect.
Waveform adjuster effect: adjustment Charge Structure on Explosive and adjustment detonation wave profile advantageously form stronger cumulative punching
Slap shot stream.
Compared with prior art, the utility model has the beneficial effects that:
1, the utility model has security performance height, reliable performance, and feature easy to process, easily operated can be direct
Implement operation using the same blasting hole and carries out construction operation.
2, due to cumulative cavity liner, the flexible linear-shaped charge in the energy-gathering jetting device in complex reflex cumulative and buffering energy dissipator
There is dual cumulative and reflection cumulative action with the bus of reflection cumulative cushion, blasthole floor rocks can be made to increase water
Flat break line, it is sufficiently broken in the horizontal direction, the biggish square position of bottom hole is formed, demolition effect is enhanced, it is flat to improve foundation plane explosion
Whole degree.And reflect cumulative cushion, rigid bed course and buffering energy dissipating bed course and form three layers of composite cushion together, there is energy dissipating three times
Buffer function can effectively cut down explosion energy, reduce the vertical explosion damage in blasthole bottom, guarantee bottom hole rock quality.
Enhancing demolition effect may be implemented and mitigate explosion to the detrimental effect of rock, realize the broken unification with protection；It can guarantee
The one-pass molding of rock foundation plane Blasting Excavation, can be widely applied to hydraulic and hydroelectric engineering, road traffic, railway, mine, tunnel
Etc. the rock slope protective layer of industries and the Blasting Excavation of protection of foundation face layer.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the utility model complex reflex cumulative and buffering energy dissipator.
Fig. 2 is the decomposition diagram of the utility model complex reflex cumulative and buffering energy dissipator.
Fig. 3 is the ring that the flexible linear-shaped charge explosion in the blast working based on complex reflex cumulative and buffering energy dissipator generates
To Explosive impact jet action schematic diagram.
Fig. 4 is that cumulative cushion is reflected in the blast working based on complex reflex cumulative and buffering energy dissipator to blasthole
The impact jet flow that the reflection cumulative of main blasting charge explosion wave generates acts on schematic diagram.
Fig. 5 is the ring that the flexible linear-shaped charge explosion in the blast working based on complex reflex cumulative and buffering energy dissipator generates
To Explosive impact jet action and reflection cumulative cushion, steel bed course and buffering energy dissipating bed course to the vertical of explosion wave
It buffers energy dissipating and acts on schematic diagram.
Fig. 6 is with the reflection cumulative cushion in the blast working of buffering energy dissipator based on complex reflex cumulative to big gun
The impact jet flow effect and reflect cumulative cushion, steel bed course, delay that the reflection cumulative of the main blasting charge explosion wave in hole generates
It rushes energy dissipating bed course and schematic diagram is acted on to the vertical buffering energy dissipating of explosion wave.
Fig. 7 is the ring that the flexible linear-shaped charge explosion in the blast working based on complex reflex cumulative and buffering energy dissipator generates
To Explosive impact jet action and reflection cumulative cushion, steel bed course and buffering energy dissipating bed course to the vertical of explosion wave
It buffers energy dissipating and acts on decomposition diagram.
Fig. 8 is with the reflection cumulative cushion in the blast working of buffering energy dissipator based on complex reflex cumulative to big gun
The impact jet flow effect and reflect cumulative cushion, steel bed course, delay that the reflection cumulative of the main blasting charge explosion wave in hole generates
It rushes energy dissipating bed course and decomposition diagram is acted on to the vertical buffering energy dissipating of explosion wave.
Fig. 9 is the diagrammatic cross-section after blast hole projectile filling.
Numbering in the drawing are as follows: 5 be blasthole, and 16 be lacing hole, and 18 is block section, and 19 be main blasting charge, and 20 be complex reflex
Cumulative and buffering energy dissipator, 21 be outer steel shell, and 22 buffer energy dissipating core for low-density, and 23 be rigid bed course, and 24 be cumulative cavity liner,
25 be reflection cumulative cushion, and 26 be flexible linear-shaped charge, and 27 be waveform adjuster, and 28 be flexible linear-shaped charge detonating material, and 29 be propagation of explosion
Line, the perforation of 30 primacords, 31 be pin bolt, and 32 be circumferential Explosive impact jet stream, and 33 be main blast hole explosion wave, and 34 be anti-
The impact jet flow that cumulative cushion generates the reflection cumulative of blasthole main charge explosion wave is penetrated, 35 be reflection cumulative buffering
Bed course acts on the vertical buffering energy dissipating of explosion wave, and 36 act on the vertical buffering energy dissipating of explosion wave for rigid bed course,
37 be to buffer energy dissipating bed course to act on the vertical buffering energy dissipating of explosion wave, and 38 energy-gathering jetting devices, 39 be primacord.
Specific embodiment
With reference to the accompanying drawing 1~9 and specific embodiment the present invention will be further described.
In following embodiment, blasthole diameter 9cm.
Embodiment 1
Complex reflex cumulative and buffering energy dissipator 20, including buffering energy dissipating bed course, the rigid pad successively laid from bottom to up
Layer 23, reflection cumulative cushion 25 and energy-gathering jetting device 38；The buffering energy dissipating bed course includes cylindrical steel shell 21 and fills
Fill out the low-density buffering energy dissipating core 22 in outer steel shell 21；It is fixedly connected with rigid bed course 23 above buffering energy dissipating bed course, it is described
Rigid bed course 23 is circular slab；The top of rigid bed course 23 has been bolted reflection cumulative cushion 25, reflects cumulative cushion
25 gradually expand from top to bottom in horn-like structure；The periphery of reflection cumulative cushion 25 is laid with energy-gathering jetting device 38, gathers
Can ejector 38 include cumulative cavity liner 24 and waveform adjuster 27, the cumulative cavity liner 24 is up and down hollow thin
Shell, the dumb-bell shape that thick, middle part is tapered in both ends of cumulative cavity liner 24, the top inside cumulative cavity liner 24 are laid with wave
Shape adjuster 27, the waveform adjuster 27 is in the funnel-form that bus is curve and has and reflect cumulative cushion among it
Cavity that 25 tops match, gradually expanding from top to bottom, waveform adjuster 27 are set on reflection cumulative cushion 25
The peripheral surface in portion.
The outer diameter of the buffering energy dissipating bed course is equal with the outer diameter of the outer diameter of rigid bed course 23,38 bottom of energy-gathering jetting device,
It is 0.9 times of blasthole diameter, is 8.1cm, the internal diameter of 38 bottom of energy-gathering jetting device and reflection 25 bottom of cumulative cushion
Outer diameter it is equal.
21 thickness 3mm of outer steel shell, the buffering energy dissipating bed course high 20cm is made of steel round tube material；Low-density buffering disappears
The density of energy core 22 is made by 0.6kg/cm3, by expanded vermiculite cement concrete.Low-density buffers energy dissipating core 22 and outer steel shell 21
Two ends flush, and fill it is closely knit.It is welded with rigid 23 bottom of bed course at 21 top of outer steel shell.
Rigid bed course 23 is solid construction, thickness 2cm.The center of rigid bed course 23 is laid with the bolt hole of diameter 10mm, rigid bed course
23 are processed by steel plate.
The angle of the bus angle and bottom that reflect cumulative cushion 25 is the angle α, and the angle α is 63.4 °, reflects cumulative
The height of cushion 25 is equal to the diameter of its bottom, is 8cm.Reflection cumulative cushion top is provided with a diameter 5mm's
Lacing hole 16, for wearing tow.Reflecting cumulative cushion 25 is solid construction made of rigid material, reflection cumulative buffering
The bottom of bed course 25 is provided with step cutting pattern, and there is the bolt hole of a diameter 10mm in bottom centre, by pin bolt 31, instead
Cumulative cushion 25 is penetrated to connect with the bolt hole of rigid 23 bottom of bed course.Cumulative cushion 25 is reflected by steel slag high-strength concrete
Processing and fabricating forms.
The height of the cumulative cavity liner 24 is equal with the reflection height of cumulative cushion 25, under cumulative cavity liner 24
End cap be located at reflection 25 bottom circular step of cumulative cushion periphery, cumulative cavity liner 24 with a thickness of 1mm, by copper sheet system
At；2 primacord perforation 30, the diameter and cumulative cavity liner at 27 top of waveform adjuster are laid in the waveform adjuster 27
The internal diameter on 24 tops is identical, and its top is flushed with cumulative cavity liner 24, and material is plastics.The reflection cumulative cushion
Flexible linear-shaped charge 26 is filled between 25 and energy-gathering jetting device 38, the flexible linear-shaped charge 26 is industrial emulsion explosive, flexible linear-shaped charge 26
In it is uniformly distributed have a flexible linear-shaped charge detonating material 28, the flexible linear-shaped charge detonating material 28 includes 2 pieces of millisecond detonators, connect with detonator
1 cyclic annular primacord 39 and primacord 29, the primacord 29 are the plastic detonating tube in millisecond detonator, and one end connects cumulative
Millisecond detonator, the other end of explosive initiation body 28, which are led to outside blasthole, is connected to main blasting circuit.The demolition effect of the device is preferable,
Base rock blasting crack is smaller, and scar is more smooth.
Complex reflex cumulative and buffering energy dissipator 20 length be equal to reflection cumulative cushion 25 height (8cm),
The thickness (2cm) of rigid bed course 23 and the sum of the height (20cm) of buffering energy dissipating bed course, are 30cm.
Embodiment 2
Complex reflex cumulative and buffering energy dissipator 20, including buffering energy dissipating bed course, the rigid pad successively laid from bottom to up
Layer 23, reflection cumulative cushion 25 and energy-gathering jetting device 38；The buffering energy dissipating bed course includes cylindrical steel shell 21 and fills
Fill out the low-density buffering energy dissipating core 22 in outer steel shell 21；It is fixedly connected with rigid bed course 23 above buffering energy dissipating bed course, it is described
Rigid bed course 23 is circular slab；The top of rigid bed course 23 has been bolted reflection cumulative cushion 25, reflects cumulative cushion
25 gradually expand from top to bottom in horn-like structure；The periphery of reflection cumulative cushion 25 is laid with energy-gathering jetting device 38, gathers
Can ejector 38 include cumulative cavity liner 24 and waveform adjuster 27, the cumulative cavity liner 24 is up and down hollow thin
Shell, the dumb-bell shape that thick, middle part is tapered in both ends of cumulative cavity liner 24, the top inside cumulative cavity liner 24 are laid with wave
Shape adjuster 27, the waveform adjuster 27 is in the funnel-form that bus is curve and has and reflect cumulative cushion among it
Cavity that 25 tops match, gradually expanding from top to bottom, waveform adjuster 27 are set on reflection cumulative cushion 25
The peripheral surface in portion.
The outer diameter of the buffering energy dissipating bed course is equal with the outer diameter of the outer diameter of rigid bed course 23,38 bottom of energy-gathering jetting device,
It is 0.8 times of blasthole diameter, is 7.2cm, the internal diameter of 38 bottom of energy-gathering jetting device and reflection 25 bottom of cumulative cushion
Outer diameter it is equal.
21 thickness 4mm of outer steel shell, the buffering energy dissipating bed course high 25cm is made of steel round tube material；Low-density buffering disappears
The density of energy core 22 is made by 0.9kg/cm3, by blast furnace cement concrete.Low-density buffers the two of energy dissipating core 22 and outer steel shell 21
A end flushes, and fills closely knit.21 top of outer steel shell is with rigid 23 bottom of bed course by strength glue sticking.
Rigid bed course 23 is solid construction, thickness 1cm.The center of rigid bed course 23 is laid with the bolt hole of diameter 10mm, rigid bed course
23 are made of cast iron.
The angle of the bus and bottom that reflect cumulative cushion 25 is the angle α, and the angle α is 60 °, reflects cumulative cushion
The height of layer 25 is less than the diameter of its bottom, is 6.2cm.Reflection cumulative cushion 25 is made of rigid material, reflects cumulative
The bottom of cushion 25 is provided with step cutting pattern, and there is the bolt hole of a diameter 10mm in bottom centre, passes through pin bolt
31, reflection cumulative cushion 25 is connected with the bolt hole of rigid 23 bottom of bed course.Cumulative cushion 25 is reflected by cast iron process
Production.
The height of the cumulative cavity liner 24 is equal with the reflection height of cumulative cushion 25, under cumulative cavity liner 24
End cap be located at reflection 25 bottom circular step of cumulative cushion periphery, cumulative cavity liner 24 with a thickness of 1.5mm, cumulative medicine
Type cover 24 is made of pvc sheet plastic；3 primacord perforation 30, waveform adjuster 27 are laid in the waveform adjuster 27
The diameter at top is identical with the internal diameter on 24 top of cumulative cavity liner, and its top is flushed with cumulative cavity liner 24, and material is Buddhist nun
Dragon.Flexible linear-shaped charge 26 is filled between the reflection cumulative cushion 25 and energy-gathering jetting device 38, the flexible linear-shaped charge 26 is
Industrial powdered ammonium nitrate explosive, it is uniformly distributed in flexible linear-shaped charge 26 to have flexible linear-shaped charge detonating material 28, the flexible linear-shaped charge detonating material 28
It is in millisecond detonator including 4 pieces of millisecond detonators, 2 cyclic annular primacords 39 being connect with detonator and primacord 29, the primacord
Plastic detonating tube, millisecond detonator, the other end of one end connection flexible linear-shaped charge detonating material 28, which lead to outside blasthole to be connected to, to be led
Quick-fried network.The demolition effect of the device is preferable, and base rock blasting crack is smaller, and scar is more smooth.
The length of complex reflex cumulative and buffering energy dissipator 20 is equal to the height of reflection cumulative cushion 25
The thickness (1cm) of (6.2cm), rigid bed course 23 and the sum of the height (25cm) of buffering energy dissipating bed course, are 32.2cm.
Embodiment 3
Complex reflex cumulative and buffering energy dissipator 20, difference from example 1 is that, the buffering energy dissipating bed course
Outer diameter it is equal with the outer diameter of the outer diameter of rigid bed course 23,38 bottom of energy-gathering jetting device, be 8/9 times of blasthole diameter, be 8cm；
The high 20cm of the buffering energy dissipating bed course；23 thickness 1.5cm of rigid bed course；The bus of reflection cumulative cushion 25 and the angle of bottom are
The angle α, the angle α are 62 °, and the height of reflection cumulative cushion 25 is 7.5cm.Complex reflex cumulative and buffering energy dissipator 20
Length be equal to the reflection height (7.5cm) of cumulative cushion 25, the thickness (1.5cm) of rigid bed course 23 and buffering energy dissipating bed course
The sum of height (20cm), be 29cm.Other are same as Example 1.The demolition effect of the device is preferable, and base rock is quick-fried
Rupture gap is smaller, and scar is more smooth.
The combination of the complex reflex cumulative and buffering energy dissipator 20 of Examples 1 to 3 makes: by cumulative cavity liner 24, gathering
Energy explosive 26, flexible linear-shaped charge detonating material 28, primacord 29 and the assembling of waveform adjustment device 27 are fabricated to energy-gathering jetting device 38, then will
Energy-gathering jetting device 38, reflection cumulative cushion 25, rigid bed course 23, buffering energy dissipating bed course assembling be fabricated to complex reflex cumulative with
Buffer energy dissipator 20, which is put in 5 bottom of blasthole, then be sequentially placed main blasting charge 19, main blasting charge detonating material and
Section 18 is blocked, is finally detonated.
Complex reflex cumulative and 20 action principle of buffer unit:
After the cap sensitive in flexible linear-shaped charge detonating material 28 is evenly arranged in annular primacord 39 in flexible linear-shaped charge 26,
And then flexible linear-shaped charge 26 is caused integrally to explode, enable to generate compared with the common industrial explosive of low blasting speed same high quick-fried with primacord 39
Fried shock velocity, formed high speed, high pressure, high temperature explosion wave, flexible linear-shaped charge 26 is mounted in cumulative cavity liner 24, due to
Cumulative cavity liner 24 is thin walled shell, the dumb-bell shape that thick, middle part is tapered in both ends, and arc-shaped ring groove two sides unbalance stress is quick-fried
Fried shock wave converges cumulative, shape to arc most concave point normal direction along the normal direction of annular groove curved surfaces, inwardly transmission impact
Be biased to plane of symmetry circumferential direction high-speed motion energy-gathering jetting at one, generated circumferential direction Explosive impact jet stream 32 with very high energy,
The intensity of very dense penetrates circumferential surrounding blasthole rock mass, makes rock mass generate to form longer annular horizontal crack crack, in turn
The high pressure of explosion generation, high-temperature gas enter crack crack and form gas wedge, promote crack crack propagation, extend, and then will build
Basal plane retains formation level on rock and splits fracture surface, keeps the reservation rock square position of foundation plane smooth, enhancing demolition effect, while by
Smaller in 26 explosive payload of flexible linear-shaped charge of energy-gathering jetting device 38, generated vertical energy density is also smaller, and passes through triple pads
Layer keeps it also smaller to the vertical damage effect of blasthole floor rocks the abatement absorption of energy.
On the other hand, after flexible linear-shaped charge 26 explodes, cumulative cavity liner 24, waveform adjuster 27 are hit powder totally, instead
Cumulative cushion 25 is penetrated due to its rigidity of structure is big from destroying, when the main blasting charge 19 in blasthole is exploded by flexible linear-shaped charge 26
It is also detonated afterwards, flexible linear-shaped charge blast impulse involves main 33 a part of blasting charge explosion wave of blasthole, and to propagate down into reflection poly-
The surface of the bus of energy cushion 25, a part of shock wave generate reflection, concentrate simultaneously along bus surface normal to middle section position
Cumulative is reflected, by repetitious reflection cumulative, the hole wall rock of impact induced in the horizontal direction forms more cracks and splits
Gap and broken, expands the rupture line length of horizontal direction, has the function that bottom surface pledge excavation is smooth, enhance demolition effect.With
This simultaneously, explosion high temperature, high pressure gas indentation rock fracture crack formed gas wedge, rock fracture, crack are further expanded
Exhibition, expands the broken range and length of rock, keeps rock more broken, further enhances demolition effect.
The detonating material of flexible linear-shaped charge 26 and flexible linear-shaped charge detonating material 28 as the main blasting charge of blasthole can be used to ignite blasthole
Interior main blasting charge 19.
Energy accumulating is made due to the reflection cumulative of shock wave, superposition and the effect for the high pressure gas that explodes for single blasthole
In horizontal normal direction, expand the rupture line length of horizontal direction, has the function that bottom surface pledge excavation is smooth.
For blasthole in a row, due to the effect of the reflection cumulative and the high pressure gas that explodes of shock wave, phase between adjacent shot hole
When interaction, the cumulative effect of blasthole bottom hole horizontal direction will be increased, penetrating gap can be quickly formed between blasthole, reduced convex
It is recessed uneven, have the function that bottom surface pledge excavation is smooth.
On the other hand, in vertical direction, while blasthole explosive charge is crushed blasthole radial direction rock, a part explosion punching
It hits wave and high pressure gas and is also vertically propagated to blasthole bottom along blasthole and impacted, pass sequentially through reflection cumulative cushion 25, just pad
Layer 23, buffering energy dissipating bed course and blasthole floor rocks.Since 26 explosive payload of flexible linear-shaped charge in energy-gathering jetting device 38 is smaller, produced
Raw vertical energy density is also smaller, and makes it to blasthole bottom the abatement absorption of explosion energy by three layers of bed course
The vertical damage effect of rock is also smaller.
The bus of cumulative cushion 25 is reflected with reflection and cumulative action to explosion wave, can extend explosion
Shock wave, explosion high pressure gas carry out repetitious impact grinding effect to rock mass is excavated, and obtain excavation rock mass further
It is broken, enhance demolition effect.Rigid high strength structure can play certain blocking simultaneously and shock wave and quick-fried is cut down in reflection
The energy of fried high pressure gas, alleviates the vertical damaging action for retaining bottom hole foundation plane rock, and device to hole bed rock stone can play
Certain protective effect.
When shock wave and high pressure gas continue to propagate impact downwards, since reflection cumulative cushion 25 is to explosion energy
Absorb cut down, the rigid bed course 23 being made of high-intensitive rigid material, further be isolated, cut down, absorb and stop shock wave and
The energy of explosion high pressure gas, mitigates the damage of device to hole bed rock stone.Simultaneously as reflection cumulative cushion 25 stop, absorb,
The shock wave of a part and the energy of explosion high pressure gas are reduced, rigid bed course 23 is made to extend the time for collapsing under pressure and smashing, into
And extending explosion high pressure gas to the fragmentation time that need to excavate rock mass, rock mass need to be excavated by, which making, is further crushed, and is increased
Strong demolition effect.
When the shock wave being cut in and explosion high pressure gas transmitted from reflection cumulative cushion 25 and rigid bed course 23
Energy absorbs reduction and barrier by further when by buffering energy dissipating bed course, further alleviates to blasthole bottom
Effect.It is compressed to crush in the low-density energy dissipating core 22 by buffering energy dissipating bed course, in addition 25 He of reflection cumulative bed course of front
Rigid bed course 23 collapses under pressure broken, and explosion wave will be made in the multiple reflection in different material medium boundaries, refraction and cumulative, into
One step consumes the explosion energy of bottom hole vertically propagating, reduces the damage of device to hole bed rock stone, plays protection hole bed rock stone
Effect.
Outer steel shell 21 plays the role of skeletal support in buffering energy dissipating bed course, at explosion initial stage, bears the rigid bed course in top
The initial impact and pressure of 23 shock waves transmitted with reflection cumulative cushion 25 and explosion high pressure gas, and postpone not occurring
It collapses, ensure that big variation does not occur for the initial position of rigid bed course 23 and reflection cumulative cushion 25 before smashing, i.e., not
Occur big movement to bottom hole direction, guarantees that the gas wedge of explosion high pressure gas explodes in rock and further prolong in the crack to be formed
Long action time, broken, enhancing demolition effect must be extended by making rock cranny further.Outer steel shell 21 high-intensitive simultaneously can also be with
Stop, the shock wave that decrease enters in the energy dissipating core 22 of low density material and high pressure gas are spread to side rock impact, reduction
Damage to buffering energy dissipating bed course side surrounding rock plays the role of protecting rock.
Low-density buffering energy dissipating core 22 is filled with inside outer steel shell 21, when shock wave is from highdensity reflection cumulative cushion
When propagating to the low-density buffering energy dissipating core 22 in buffering energy dissipating bed course in layer 25 and rigid bed course 23 vertically downwards, low-density buffering
Energy dissipating core 22 plays the role of absorption, weakens the big energy of shock wave, reduce shock wave device to hole bed rock since wave impedance is small
Stone damage, plays the role of protection hole bed rock stone.Meanwhile after buffering energy dissipating bed course is smashed compression, hole base space becomes larger,
It can make high pressure gas reduction of exploding, the damage that can reduce device to hole bed rock stone destroys, and plays the role of protection hole bed rock stone.
The embodiment of the above, the only preferred embodiment of the utility model are only used to explain that this is practical new
Type, not limiting the utility model practical range to those of ordinary skill in the art certainly can be according to this specification
Disclosed in technology contents, make other embodiments easily by way of replacing or changing, therefore all practical new at this
The changes and improvements etc. that the principle and process conditions of type are done, should be included in present utility model application the scope of the patents.
Claims (6)
1. complex reflex cumulative and buffering energy dissipator (20), which is characterized in that the buffering including successively laying from bottom to up disappears
It can bed course, rigid bed course (23), reflection cumulative cushion (25) and energy-gathering jetting device (38)；The buffering energy dissipating bed course includes circle
Cylindricality outer steel shell (21) and the low-density being filled in outer steel shell buffering energy dissipating core (22)；Buffer the fixed company in top of energy dissipating bed course
It is connected to rigid bed course (23), the rigid bed course (23) is circular slab；Reflection cumulative buffering has been bolted above rigid bed course (23)
Bed course (25), reflection cumulative cushion (25) are gradually expanded from top to bottom in horn-like structure；Reflect cumulative cushion
(25) periphery is laid with energy-gathering jetting device (38), and energy-gathering jetting device (38) includes cumulative cavity liner (24) and waveform adjuster
(27), the cumulative cavity liner (24) is thin walled shell, cumulative cavity liner (24) dumb-bell shape that thick, middle part is tapered in both ends,
The internal top of cumulative cavity liner (24) is laid with waveform adjuster (27), and the waveform adjuster (27) is curve in bus
Funnel-form and the peripheral surface for being set on reflection cumulative cushion (25) top.
2. complex reflex cumulative according to claim 1 and buffering energy dissipator (20), which is characterized in that the buffering disappears
The outer diameter of energy bed course is equal with the outer diameter of the outer diameter of rigid bed course (23), energy-gathering jetting device (38) bottom, is the 0.8 of blasthole diameter
~0.9 times, the internal diameter of energy-gathering jetting device (38) bottom is equal with the reflection outer diameter of cumulative cushion (25) bottom.
3. complex reflex cumulative according to claim 1 and buffering energy dissipator (20), which is characterized in that the buffering disappears
It can the high 20~30cm of bed course, 2~4mm of outer steel shell (21) thickness；The density that low-density buffers energy dissipating core (22) is 0.6~0.9kg/cm
³。
4. complex reflex cumulative according to claim 1 and buffering energy dissipator (20), which is characterized in that the rigid bed course
(23) for solid construction, with a thickness of 1~2cm.
5. complex reflex cumulative according to claim 1 and buffering energy dissipator (20), which is characterized in that the reflection is poly-
The bus of energy cushion (25) and the angle of bottom are the angle α, and the angle α is 60 °~70 °.
6. complex reflex cumulative according to claim 1 and buffering energy dissipator (20), which is characterized in that the cumulative medicine
The height of type cover (24) is equal with the reflection height of cumulative cushion (25), cumulative cavity liner (24) with a thickness of 1~
1.5mm is filled with flexible linear-shaped charge (26), the cumulative between the reflection cumulative cushion (25) and energy-gathering jetting device (38)
Uniformly distributed in explosive (26) to have flexible linear-shaped charge detonating material (28), one end of the flexible linear-shaped charge detonating material (28) is led to outside blasthole
It is connected to main blasting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821045561.3U CN208476097U (en) | 2018-07-03 | 2018-07-03 | Complex reflex cumulative and buffering energy dissipator |
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| CN201821045561.3U CN208476097U (en) | 2018-07-03 | 2018-07-03 | Complex reflex cumulative and buffering energy dissipator |
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|---|---|
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ID=65212803
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645300A (en) * | 2018-07-03 | 2018-10-12 | 河南省水利第二工程局 | Complex reflex cumulative and buffering energy dissipator and the blasting construction method based on the device |
| CN110174031A (en) * | 2019-05-16 | 2019-08-27 | 山东科技大学 | A kind of device overcoming methods of blasting toes in open |
-
2018
- 2018-07-03 CN CN201821045561.3U patent/CN208476097U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645300A (en) * | 2018-07-03 | 2018-10-12 | 河南省水利第二工程局 | Complex reflex cumulative and buffering energy dissipator and the blasting construction method based on the device |
| CN108645300B (en) * | 2018-07-03 | 2023-08-04 | 河南省水利第二工程局 | Composite reflection energy collecting and buffering energy dissipating device and blasting construction method based on same |
| CN110174031A (en) * | 2019-05-16 | 2019-08-27 | 山东科技大学 | A kind of device overcoming methods of blasting toes in open |
| CN110174031B (en) * | 2019-05-16 | 2021-12-28 | 山东科技大学 | Device for overcoming blasting root |
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