CN108489349B - One kind orienting gas blast method based on the pretreated direct injection of cumulative - Google Patents
One kind orienting gas blast method based on the pretreated direct injection of cumulative Download PDFInfo
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- CN108489349B CN108489349B CN201810184290.8A CN201810184290A CN108489349B CN 108489349 B CN108489349 B CN 108489349B CN 201810184290 A CN201810184290 A CN 201810184290A CN 108489349 B CN108489349 B CN 108489349B
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- blasthole
- connector
- sealing device
- cumulative
- direct injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- 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
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- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present invention relates to one kind to orient gas blast method based on the pretreated direct injection of cumulative, comprising the following steps: 1) carries out bore operation on excavation contour line according to blasting design scheme；2) beehive-shaped charge prepared is packed into blasthole by predetermined splitting scope；3) aperture stays one section of preset space without powder charge, and then line detonation carries out blasthole pre- quick-fried；4) blasthole is cleared up, fever hole sealing device is installed in blasthole, then liquid gas is injected into blasthole by fever hole sealing device；5) fever hole sealing device is connected with parallel element, and fever hole sealing device is carried out parallel connection by being connected in parallel element；6) power on and detonate.The present invention can effectively control the propagation direction in crack in rock gas blasting process, guarantee to form the higher through crack of flatness along predetermined splitting scope during rock is in gas blast, and easy to operate, work efficiency is high, saves economic cost.
Description
Technical field
The present invention relates to a kind of gas blast methods, more particularly to a kind of pretreated direct injection of cumulative that is based on to orient
Gas blast method.
Background technique
Gas blast technology is that (carbon dioxide gas relatively safety and market are easy to buy at present using liquid gas
It is cheap；Multiselect carbon dioxide is explosion auxiliary material) be heated vaporized expanding, and the fracture of quick release high pressure gas loosens rock, tool
There is the features such as highly-safe, destructive small and pollution is few, provides advantageous help for mine safety exploitation and loosening.Therefore suitable extensively
It is loosened for all kinds of mines (stone mine, iron ore, coal mine, gold mine etc.), tunnel, tunnel, trench emergence, road construction, frozen soil layer
Etc. engineering.
The equipment that gas blast technology uses at present is gas blast pipe, including inflatable structure, ignition structure, inflating medium
Memory structure and sealing structure, wherein inflating medium memory structure is mainly steel pipe or steel cylinder structure.This inflating medium storage
Structure, since the intensity of its all directions is identical with stress, the splitting scope caused by rock mass has uncertainty, it is difficult to control
The propagation direction in crack during rock blasting, and inflating medium memory structure occurs serious deformation and is broken after explosion
Damage, it is difficult to reprocess reuse, increase blasting cost.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose one kind based on the pretreated direct injection orientation gas blast method of cumulative, and the present invention can be effective
The propagation direction for controlling crack in rock gas blasting process, guarantees during rock is in gas blast along predetermined rupture side
To the higher through crack of flatness is formed, and easy to operate, work efficiency is high, saves economic cost.
To achieve the goals above, present invention employs following technical solutions:
One kind orienting gas blast method based on the pretreated direct injection of cumulative, comprising the following steps:
1) bore operation is carried out on excavation contour line according to blasting design scheme；
2) beehive-shaped charge prepared is packed into blasthole by predetermined splitting scope；
3) aperture stays one section of preset space without powder charge, and then line detonation carries out blasthole pre- quick-fried；
4) blasthole is cleared up, fever hole sealing device is installed in blasthole, then passes through fever hole sealing device for liquid gas
It is injected into blasthole；
5) fever hole sealing device is connected with parallel element, and will generate heat hole sealing device progress simultaneously by being connected in parallel element
Connection；
6) power on and detonate.
Preferably, the loading method of beehive-shaped charge is as follows in the step 2): fixed inside pvc pipe two pieces it is internally recessed
Sunken baffle, and cavity liner is fixed on baffle both ends, then send out Nonel detonator in pvc pipe basis rest one, from baffle and PVC
Detonator is drawn between pipe, loads explosive between baffle later, beehive-shaped charge is then packed into blasthole, and by cavity liner pair
Quasi- predetermined splitting scope.
Preferably, the explosive uses powdery emulsifying explosive.
Preferably, in the step 3) preset space without blocking.
Preferably, preset space described in the step 3) is the 30% of blast hole depth.
Preferably, fever hole sealing device described in the step 4) includes hole packer, connector and heat-generating pipe, the sealing of hole
Device bottom is connected with connector, and is integrally formed with connector, is provided with filling liquid channel among the hole packer and connector, described
Filling liquid channel offers outlet in the side of connector, and the other side in the filling liquid channel is equipped with two into four in hole packer and goes out
Wire connector, described two into four input terminals for going out wire connector are connected with power inlet jack, and described two into four go out electric wire
One output end of connector is connected with power outlet jack, and the lower section of the connector is equipped with adapter, institute in heat-generating pipe
It states adapter and connects two into the four another output ends for going out wire connector, the connector is mounted in heat-generating pipe, the fever
Bottom of the tube loads exothermic mixture, and sealing-plug is equipped with above the exothermic mixture, runs through ignition wire, the point inside the sealing-plug
The output end of thermoelectricity line is connected with heating wire, and the input terminal of ignition wire is connect with adapter.
Preferably, the hole packer diameter and blasthole diameter match in proportion.
Preferably, the filling liquid channel middle is equipped with check valve, and the flow direction of the check valve is from top to bottom.
Preferably, the element that is connected in parallel in the step 5) includes parallel conducting wire and plug in parallel, the parallel conducting wire
Both ends connect plug in parallel.
The beneficial effects of the present invention are:
1) present invention carries out blasthole using beehive-shaped charge before carrying out gas blast pre- quick-fried, first with beehive-shaped charge institute
The high speed of formation, the metal jet of high pressure act on the hole wall rock in cavity liner direction, form crack along predetermined splitting scope, so
Afterwards using the heated vaporization of liquid gas, gas expansion externally does work, and crack is under high pressure gas effect further along predetermined rupture
Direction extends extension, and the present invention can effectively control the propagation direction in crack in rock gas blasting process, guarantee to exist in rock
The higher through crack of flatness is formed along predetermined splitting scope during gas blast.
2) various circuit elements are arranged inside fever hole sealing device in the present invention, when use only need to use be connected in parallel element
It is simply connected, easy to operate, the line for avoiding scene is chaotic, and work efficiency is high.
3) present invention liquid gas being directly injected into blasthole by the filling liquid channel in fever hole sealing device, by big gun
Hole, can be to avoid using the inflating medium of the forms such as steel pipe or steel cylinder in traditional gas explosion to store up as inflating medium memory structure
Structure is deposited, the manufacturing difficulty of explosive is not only reduced, and the hole sealing device that generates heat may be reused, is saved economical
Cost.
Detailed description of the invention
Fig. 1, which is that the present invention is a kind of, orients gas blast method flow diagram based on the pretreated direct injection of cumulative；
Fig. 2 is the structural schematic diagram of present invention fever hole sealing device；
Fig. 3 is present invention fever hole sealing device internal circuit current flow diagram；
Fig. 4 is the structural schematic diagram that the present invention is connected in parallel element；
Fig. 5 is the structural schematic diagram of beehive-shaped charge in explosion case of the present invention；
Fig. 6 is that cumulative pre-processes sectional view in explosion case of the present invention；
Fig. 7 is that cumulative pre-processes top view in explosion case of the present invention；
Fig. 8 is gas blast schematic diagram in explosion case of the present invention.
In figure: 1, heat-generating pipe, 2, sealing-plug, 3, connector, 4, hole packer, 5, check valve, 6, filling liquid channel, 7, power supply goes out
Mouthful jack, 8, two into four go out wire connector, 9, power inlet jack, 10, adapter, 11, ignition wire, 12, heating wire,
13, exothermic mixture, 14, plug in parallel, 15, parallel conducting wire, 16, cavity liner, 17, baffle, 18, Nonel detonator, 19, pvc pipe,
20, detonator, 21, electric cap, 22, loading wire of electric detonator, 23, detonation electric wire, 24, exploder, 25, No.1 blasthole, 26, two gunfires
Hole, 27, three gunfire holes, 28, four gunfire holes, 29, five gunfire holes, 30, power output plug, 31, power supply transportion wire, 32, electricity
Source output terminal mouth, 33, power control switch.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description, it is clear that described embodiments are only a part of the embodiments of the present invention, is not whole embodiments.
Examples of the embodiments are shown in the accompanying drawings, and in which the same or similar labels are throughly indicated identical or classes
As element or element with the same or similar functions.The embodiments described below with reference to the accompanying drawings are exemplary, purport
It is being used to explain the present invention, and is being not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Referring to Fig.1-5, a kind of that gas blast method, including following step are oriented based on the pretreated direct injection of cumulative
It is rapid:
1) bore operation is carried out on excavation contour line according to blasting design scheme；
2) beehive-shaped charge prepared is packed into blasthole by predetermined splitting scope；
3) aperture stays one section of preset space without powder charge, and then line detonation carries out blasthole pre- quick-fried；
4) blasthole is cleared up, fever hole sealing device is installed in blasthole, then passes through fever hole sealing device for liquid gas
It is injected into blasthole；
5) fever hole sealing device is connected with parallel element, and will generate heat hole sealing device progress simultaneously by being connected in parallel element
Connection；
6) power on and detonate.
The loading method of beehive-shaped charge is as follows in the step 2): fixing two pieces inside pvc pipe 19 and is internally recessed
Baffle 17, and cavity liner 16 is fixed on 17 both ends of baffle, then send out Nonel detonator 18 in 19 basis rest one of pvc pipe, from gear
Detonator 20 is drawn between plate 17 and pvc pipe 19, and it is existing with breakage can to draw fractureing of may occurring along hole wall to avoid detonator
As explosive is loaded between baffle 17 later, beehive-shaped charge is then packed into blasthole, and cavity liner 16 is directed at predetermined rupture
Direction.
The advantages of explosive uses powdery emulsifying explosive, and powdery emulsifying explosive has both emulsion and powder type explosive, cream
Changing explosive has the characteristics that explosion velocity is high, water-resistance is excellent, and explosion velocity height is conducive to performance high speed energy-gathering jetting, and water-resistance is excellent, fits
For water bearing blasthole, and powder type explosive can be well adapted for the irregular shape of baffle 17 and cavity liner 16 in beehive-shaped charge.
For preset space without blocking, nonclogging purpose is the detonation gas reduced after explosive charge in the step 3)
Excess destruction of the product pressure to lateral rock.
Preset space described in the step 3) is the 30% of blast hole depth.
Fever hole sealing device described in the step 4) includes hole packer 4, connector 3 and heat-generating pipe 1, the hole packer 4
Bottom is connected with connector 3, and is integrally formed with connector 3, is provided with filling liquid channel 6 among the hole packer 4 and connector 3,
The filling liquid channel 6 offers outlet in the side of connector 3, and the other side in the filling liquid channel 6 is equipped in hole packer 4
The two of model ZQ-2 go out wire connector 8 into four, wherein two into one input terminal of a positive negative composition is referred to, four go out to refer to
One one output end of a positive negative composition, altogether there are two output end, described two into four input terminals for going out wire connector 8 are connected with electricity
Source inlet jack 9, described two into four output ends for going out wire connector 8 are connected with power outlet jack 7, the connector
3 lower section is equipped with adapter 10 in heat-generating pipe 1, and the adapter 10 connects two into the four another outputs for going out wire connector 8
End, the connector 3 are mounted in heat-generating pipe 1, and exothermic mixture 13 is loaded in 1 bottom of heat-generating pipe, are pacified above the exothermic mixture 13
Equipped with sealing-plug 2, ignition wire 11 is run through inside the sealing-plug 2, the output end of the ignition wire 11 is connected with heating wire
12, and the input terminal of ignition wire 11 is connect with adapter 10.
4 diameter of hole packer and blasthole diameter match according to the ratio of 1.05:1, hole packer 4 can be clamped on hole
Mouthful.
Check valve 5 is installed, the flow direction of the check valve 5 is from top to bottom in the middle part of the filling liquid channel 6.
The element that is connected in parallel in the step 5) includes parallel conducting wire 15 and plug 14 in parallel, 15 liang of the parallel conducting wire
End connects plug 14 in parallel.
Explosion case
Direct injection is carried out based on cumulative pretreatment on excavation contour line and orients gas blast, referring to Fig.1-8, including
Following steps:
1) in the practical blasting engineering that certain rock consolidating coefficient is 15.0, tier hole is drilled out along excavation contour line,
Respectively No.1 blasthole 25, two gunfire holes 26, three gunfire holes 27, four gunfire holes 28 and five gunfire holes 29, hole depth 3.0m, aperture
For 40mm, pitch-row 0.8m；
2) beehive-shaped charge is prepared, two pieces of baffles being internally recessed 17 are fixed inside pvc pipe 19, and handle is suppressed by copper powder
Made of cavity liner 16 be fixed on 17 both ends of baffle, can be reduced using the baffle 17 being internally recessed to lateral hole wall rock
It destroys, then sends out Nonel detonator 18 in 19 basis rest one of pvc pipe, detonator 20 is drawn between baffle 17 and pvc pipe 19, it
Powdery emulsifying explosive is loaded between baffle 17 afterwards, beehive-shaped charge is then packed into blasthole, and cavity liner 16 is aligned and is made a reservation for
Splitting scope；
3) there are the preset spaces of 0.9m at aperture without powder charge, and also without blocking, not blocking is to reduce
Then the detonator of extraction 20 is all bundled the excess destruction of lateral rock by the detonation gas product pressure after explosive charge
Around an electric detonator 21, the connection detonation of loading wire of electric detonator 22 23 one end of electric wire, detonation 23 other end of electric wire connects exploder
24, then detonate；
4) selecting 4 diameter of hole packer is the fever hole sealing device of 42mm, by 13 raw material of solid powdery exothermic mixture, by quality
Percentage is Calcium perchlorate: sodium nitrate: starch: this sodium sulfonate of detergent alkylate: Chinese littleleaf box wood powder: dry method wood-fibred: calcirm-fluoride: aluminium
Powder: phenolic resin=15%:45%:14%:4%:4%:5%:5%:5%:3% ratio is uniformly mixed and obtains exothermic mixture
13, and be loaded into heat-generating pipe 1, sealing-plug 2 is installed above exothermic mixture 13 while heating wire 12 is put into exothermic mixture 13,
Later by 11 connecting adapter 10 of ignition wire, then connector 3 is mounted on the top of heat-generating pipe 1, blasthole cleared up, then each
Installation fever hole sealing device, injects liquid CO above the filling liquid channel 6 among hole packer 4 in blasthole2, liquid CO2From top to bottom
By check valve 5, later again as filling liquid channel 6 reaches the outlet that 3 side of connector opens up, due to connector 3 and heat-generating pipe 1
Diameter is less than 4 diameter of hole packer, so liquid CO2It can be directly injected into blasthole from along hole wall；
5) length and the matched parallel conducting wire 15 of pitch-row are selected, 15 both ends of parallel conducting wire connect plug 14 in parallel to obtain
It is connected in parallel element, the plug in parallel 14 of 15 one end of parallel conducting wire is inserted into No.1 blasthole 25 electricity at the top of the hole sealing device that generates heat
Source exports jack 7, and the plug in parallel of the other end is inserted into two gunfire holes 26 power inlet jack at the top for the hole sealing device that generates heat
9, behind successively carry out this operation, thus by No.1 blasthole 25, two gunfire holes 26, three gunfire holes 27, four gunfire holes 28 and five
Fever hole sealing device in gunfire hole 29 is all connected in parallel；
6) the fever hole sealing device being inserted into the power output plug 30 of 31 front end of power supply transportion wire in No.1 blasthole 25
The other end of the power inlet jack 9 at top, power supply transportion wire 31 connects output port of power source 30, opens power control switch
33, which are powered, detonates.
Working principle: in use, progress cumulative first is pre- quick-fried, beehive-shaped charge is packed into blasthole, and cavity liner 16 is right
Quasi- predetermined splitting scope, the powdery emulsifying explosive explosion in beehive-shaped charge generate detonation wave, and detonation wave is plunderred at the top of cavity liner 16
To tail portion, cavity liner 16 is squeezed in the axial direction with very big speed, deform cavity liner 16 and collides, squeezes at axis
Pressure, while under the action of collision high-pressure, it converges into one continuous high speed metal stream and acts on hole wall rock, thus along predetermined broken
It splits direction line and forms crack.Then blasthole is cleared up, the installation fever hole sealing device in blasthole is logical from the filling liquid among hole packer 4
Liquid CO is injected above road 62, liquid CO2Check valve 5 is passed through, later again as filling liquid channel 6 reaches connector 3 one
The outlet that side opens up, since connector 3 and 1 diameter of heat-generating pipe are less than 4 diameter of hole packer, so liquid CO2It can be from along hole
Wall is directly injected into blasthole, and the present invention is by the filling liquid channel 6 in fever hole sealing device by liquid CO2It is directly injected into big gun
Kong Zhong can be to avoid using the forms such as steel pipe or steel cylinder in traditional gas explosion using blasthole as inflating medium memory structure
Inflating medium memory structure not only reduces the manufacturing difficulty of explosive, and the hole sealing device that generates heat can repeat to make
With saving economic cost；Then the plug in parallel 14 of 15 one end of parallel conducting wire is inserted into previous blasthole the hole sealing device that generates heat
The power outlet jack 7 at top, the plug in parallel 14 of the other end are inserted into the latter blasthole the electricity at the top for the hole sealing device that generates heat
Source inlet jack 8, so that the heating wire 12 in the fever hole sealing device in all blastholes is connected in parallel, it is finally that power supply is defeated
The power output plug 30 of 31 front end of power transmission line is inserted into the power inlet jack at the top of the fever hole sealing device in No.1 blasthole 25
8, the other end of power supply transportion wire 31 connects output port of power source 32, opens the energization of power control switch 33 and detonates, this
Invention by being arranged various circuit elements inside fever hole sealing device, when use only need to use be connected in parallel element and carry out simply
Connection, easy to operate, the line for avoiding scene is chaotic, and work efficiency is high；The electric current of same size is from anode after being powered
To cathode according to " two into four, which go out 8 → adapter of wire connector, 10 → heating wire, 12 → adapter 10 → bis-, goes out electric wire company into four
The order for connecing device 8 " passes through each heating wire 12 to generate heat in hole sealing device, heating wire 12 lights exothermic mixture 13, and exothermic mixture 13 is released
The heat of amplification quantity, so that the liquid CO in blasthole2Gasification, high compression swelling are externally done work rapidly, and crack is acted in high pressure gas
Under further along predetermined splitting scope extend extend.The present invention carries out blasthole using beehive-shaped charge before carrying out gas blast
It is pre- quick-fried, the propagation direction in crack in rock gas blasting process can be effectively controlled, is guaranteed in rock during gas blast
The higher through crack of flatness is formed along predetermined splitting scope.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited merely to
This, anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention
And its inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. one kind orients gas blast method based on the pretreated direct injection of cumulative, it is characterised in that: according to the following steps into
Row:
1) bore operation is carried out on excavation contour line according to blasting design scheme；
2) beehive-shaped charge prepared is packed into blasthole by predetermined splitting scope；
3) aperture stays one section of preset space without powder charge, and then line detonation carries out blasthole pre- quick-fried；
4) blasthole is cleared up, fever hole sealing device is installed in blasthole, is then injected liquid gas by fever hole sealing device
Into blasthole；
5) fever hole sealing device, which is connected with, is connected in parallel element, and will generate heat hole sealing device progress simultaneously by being connected in parallel element
Connection；
6) power on and detonate；
Fever hole sealing device described in the step 4) includes hole packer (4), connector and heat-generating pipe, the hole packer bottom with
Connector is connected, and is integrally formed with connector, is provided with filling liquid channel, the filling liquid channel among the hole packer and connector
Outlet is offered in the side of connector, the other side in the filling liquid channel is equipped with two into four in hole packer and goes out electric wire connection
Device, described two into four input terminals for going out wire connector are connected with power inlet jack, and described two into four go out wire connector
One output end is connected with power outlet jack, and the lower section of the connector is equipped with adapter, the adapter in heat-generating pipe
Connection two into four goes out another output end of wire connector, and the connector is mounted in heat-generating pipe, the fever bottom of the tube dress
Thermit powder is filled in and issued, sealing-plug is installed above the exothermic mixture, runs through ignition wire inside the sealing-plug, the ignition wire
Output end is connected with heating wire, and the input terminal of ignition wire is connect with adapter.
2. as described in claim 1 a kind of based on the pretreated direct injection orientation gas blast method of cumulative, feature
Be: the loading method of beehive-shaped charge is as follows in the step 2): two pieces of baffles being internally recessed are fixed inside pvc pipe,
And cavity liner is fixed on baffle both ends, then send out Nonel detonator in pvc pipe basis rest one, draw between baffle and pvc pipe
Detonator out loads explosive between baffle later, beehive-shaped charge is then packed into blasthole, and cavity liner alignment is predetermined broken
Split direction.
3. as claimed in claim 2 a kind of based on the pretreated direct injection orientation gas blast method of cumulative, feature
Be: the explosive uses powdery emulsifying explosive.
4. as described in claim 1 a kind of based on the pretreated direct injection orientation gas blast method of cumulative, feature
Be: preset space is without blocking in the step 3).
5. as described in claim 1 a kind of based on the pretreated direct injection orientation gas blast method of cumulative, feature
Be: preset space described in the step 3) is the 30% of blast hole depth.
6. as described in claim 1 a kind of based on the pretreated direct injection orientation gas blast method of cumulative, feature
Be: the hole packer diameter and blasthole diameter match in proportion.
7. as described in claim 1 a kind of based on the pretreated direct injection orientation gas blast method of cumulative, feature
Be: the filling liquid channel middle is equipped with check valve, and the flow direction of the check valve is from top to bottom.
8. as described in claim 1 a kind of based on the pretreated direct injection orientation gas blast method of cumulative, feature
Be: the element that is connected in parallel in the step 5) includes parallel conducting wire and plug in parallel, and the parallel conducting wire both ends connection is simultaneously
Join plug.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184290.8A CN108489349B (en) | 2018-03-06 | 2018-03-06 | One kind orienting gas blast method based on the pretreated direct injection of cumulative |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184290.8A CN108489349B (en) | 2018-03-06 | 2018-03-06 | One kind orienting gas blast method based on the pretreated direct injection of cumulative |
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| CN108489349B true CN108489349B (en) | 2019-11-05 |
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| CN112393654B (en) * | 2020-11-11 | 2022-05-17 | 中国人民解放军陆军工程大学 | Two-way energy-gathering blasting charge structure of joint-cutting pipe |
| CN112556523A (en) * | 2020-11-23 | 2021-03-26 | 浙江科技学院 | Double-sided symmetrical electric blasting energy-gathering rock breaking design method |
| CN114608396A (en) * | 2022-03-21 | 2022-06-10 | 广西国方建设工程有限责任公司 | Method for breaking rock by utilizing air energy and liquid oxygen blasting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2864570Y (en) * | 2006-02-07 | 2007-01-31 | 崔彪 | Stone directional blasting tube |
| CN201706988U (en) * | 2010-04-10 | 2011-01-12 | 葛洲坝集团第二工程有限公司 | Annular energy cumulating groove type flat bottom blasting explosive bag |
| CN106767204B (en) * | 2016-12-20 | 2018-09-25 | 大连大学 | Close the cold blasting method of blast hole liquid carbon dioxide |
| CN106482592B (en) * | 2016-12-20 | 2018-09-25 | 大连大学 | Apply the hole sealing device in carbon dioxide explosion explosion technology |
| CN107289829A (en) * | 2017-08-25 | 2017-10-24 | 辽宁工程技术大学 | A kind of ring plane jet jet cutter and its application method |
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