CN108442928A - A kind of direct injection orientation gas blast method based on V-arrangement grooving - Google Patents
A kind of direct injection orientation gas blast method based on V-arrangement grooving Download PDFInfo
- Publication number
- CN108442928A CN108442928A CN201810183217.9A CN201810183217A CN108442928A CN 108442928 A CN108442928 A CN 108442928A CN 201810183217 A CN201810183217 A CN 201810183217A CN 108442928 A CN108442928 A CN 108442928A
- Authority
- CN
- China
- Prior art keywords
- sealing device
- blasthole
- connector
- arrangement
- direct injection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/14—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
Abstract
The present invention relates to a kind of, and the direct injection based on V-arrangement grooving orients gas blast method, includes the following steps：1) bore operation is carried out on excavation contour line according to blasting design scheme；2) two V-arrangement groovings are cut out in the predetermined splitting scope of blasthole wall upper edge；3) fever hole sealing device is installed in blasthole, then liquid gas is injected into blasthole by the hole sealing device that generates heat；4) 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；5) power on and detonate.The present invention can effectively control the propagation direction in crack in rock gas blasting process, ensure 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 direct injection based on V-arrangement grooving to orient gas
Body blasting method.
Background technology
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, with
Explosive blasting provides favorably compared to having the characteristics that safe, destructive small and pollution is few for mine safety exploitation and loosening
It helps.Therefore all kinds of mines (stone mine, iron ore, coal mine, gold mine etc.), tunnel, tunnel, trench emergence, road are widely used in
Construction, frozen soil layer loosening 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 are mainly steel pipe or steel cylinder structure.This inflating medium storage
Structure, since the intensity of its all directions is identical with stress, splitting scope has uncertainty caused by rock mass, 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.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention
One purpose is to propose that a kind of direct injection orientation gas blast method based on V-arrangement grooving, the present invention can be controlled effectively
The propagation direction in crack in rock gas blasting process processed, ensures during rock is in gas blast along predetermined splitting scope
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：
A kind of direct injection orientation gas blast method based on V-arrangement grooving, includes the following steps：
1) bore operation is carried out on excavation contour line according to blasting design scheme；
2) two V-arrangement groovings are cut out in the predetermined splitting scope of blasthole wall upper edge；
3) fever hole sealing device is installed in blasthole, liquid gas is then injected by blasthole by the hole sealing device that generates heat
In；
4) 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；
5) power on and detonate.
Preferably, the depth of V-arrangement grooving described in the step 2) matches in proportion with blasthole diameter.
Preferably, the apex angle of V-arrangement grooving described in the step 2) is between 35 ° -45 °, and the angle of V-arrangement grooving apex angle is flat
Separated time is overlapped with predetermined splitting scope.
Preferably, the hole sealing device that generates heat described in the step 3) includes hole packer, connector and heat-generating pipe, the sealing of hole
Device bottom is connected with connector, and is integrally formed with connector, and filling liquid channel is provided 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 input terminals for going out wire connector into four 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, there are two inverted V-shaped ridges for the hole packer both sides, and inverted V-shaped ridge size and V-arrangement grooving size are in proportion
Match.
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, it includes parallel conducting wire and plug in parallel that element is connected in parallel described in the step 4), and the parallel connection is led
Line both ends connection plug in parallel.
The beneficial effects of the invention are as follows：
1) present invention cuts out two V-arrangement groovings before carrying out gas blast in the predetermined splitting scope of blasthole wall upper edge, rises
The heated vaporized expanding of liquid gas after quick-fried generates huge pressure to hole wall, and gas pressure makes V-arrangement grooving tip generates to answer
While power concentration zones, and V-arrangement grooving root is made nearby to generate compression and (the also known as crack growth inhibition of low Tension Stress Zone
Area), under the action of the two mechanics effects, crackle extends extension since grooving tip to the predetermined splitting scope in forward position, and
And inhibit generation of the crackle in other positions and direction, the present invention that can effectively control crack in rock gas blasting process
Propagation direction, ensure to form flatness along predetermined splitting scope during rock is in gas blast higher through splitting
Seam.
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 the hole sealing device that generates heat, 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.
Description of the drawings
Fig. 1 is that a kind of direct injection based on V-arrangement grooving of the present invention orients gas blast method flow diagram；
Fig. 2 is V-arrangement grooving schematic diagram of the present invention；
Fig. 3 is the structural schematic diagram of present invention fever hole sealing device；
Fig. 4 is present invention fever hole sealing device internal circuit current direction schematic diagram；
Fig. 5 is the structural schematic diagram that the present invention is connected in parallel element；
Fig. 6 is gas blast schematic diagram in explosion case of the present invention；
Fig. 7 is gas blast vertical view in explosion case of the present invention.
In figure：1, blasthole, 2, V-arrangement grooving, 3, heat-generating pipe, 4, sealing-plug, 5, connector, 6, hole packer, 7, check valve, 8,
Filling liquid channel, 9, power outlet jack, 10, two into four go out wire connector, and 11, power inlet jack, 12, inverted V-shaped ridge,
13, adapter, 14, ignition wire, 15, heating wire, 16, exothermic mixture, 17, plug in parallel, 18, parallel conducting wire, 19, one gunfire
Hole, 20, two gunfire holes, 21, three gunfire holes, 22, four gunfire holes, 23, five gunfire holes, 24, power output plug, 25, power supply it is defeated
Power transmission line, 26, output port of power source, 27, power control switch.
Specific implementation mode
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 embodiment.
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
For explaining the present invention, and it is 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 ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply 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 this feature.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；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
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
Suddenly：
1) bore operation is carried out on excavation contour line according to blasting design scheme；
2) two V-arrangement groovings 2 are cut out in the 1 predetermined splitting scope of wall upper edge of blasthole；
3) fever hole sealing device is installed in blasthole, liquid gas is then injected by blasthole by the hole sealing device that generates heat
In；
4) 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；
5) power on and detonate.
1 diameter of depth Yu blasthole of V-arrangement grooving 2 described in the step 2) is according to 0.3：1 ratio matches, because of V
2 depth of shape grooving is too small can be so that directional effect reduces, and 2 depth of V-arrangement grooving is excessive, can make the reduction of grooving efficiency.
The apex angle of V-arrangement grooving 2 described in the step 2) is between 35 ° -45 °, because according to fracture mechanics viewpoint, sharply
Grooving can be advantageously implemented the low stress brittle fracture of rock, and the angular bisector of 2 apex angle of V-arrangement grooving and predetermined splitting scope weight
It closes, can be further ensured that crack is generated along predetermined splitting scope.
The hole sealing device that generates heat described in the step 3) includes hole packer 6, connector 5 and heat-generating pipe 3, the hole packer 6
Bottom is connected with connector 5, and is integrally formed with connector 5, and filling liquid channel 8 is provided among the hole packer 6 and connector 5,
The filling liquid channel 8 offers outlet in the side of connector 5, and the other side in the filling liquid channel 8 is equipped in hole packer 6
The two of model ZQ-2 go out wire connector 10 into four, wherein two into referring to one input terminal of a positive negative composition, and four go out and refer to
One one output end of a positive negative composition, altogether there are two output end, described two input terminals for going out wire connector 10 into four are connected with
Power inlet jack 11, described two into four output ends for going out wire connector 10 are connected with power outlet jack 9, the company
The lower section of fitting 5 is equipped with adapter 13 in heat-generating pipe 3, and the connection of the adapter 13 two into four goes out the another of wire connector 10
Output end, the connector 5 are mounted in heat-generating pipe 3,3 bottom of heat-generating pipe filling exothermic mixture 16, on the exothermic mixture 16
Side is equipped with sealing-plug 4, and ignition wire 14 is run through in 4 inside of the sealing-plug, and the output end of the ignition wire 14 is connected with electricity
Heated filament 15, and the input terminal of ignition wire 14 is connect with adapter 13.
6 diameter of the hole packer and blasthole diameter are according to 1.05：1 ratio matches, and can hole packer 6 be clamped on hole
Mouthful.
There are two inverted V-shaped ridges 12 for 6 both sides of the hole packer, and 12 apex angle of inverted V-shaped ridge is equal with 2 apex angle of V-arrangement grooving,
12 height of inverted V-shaped ridge and 2 depth of V-arrangement grooving are according to 1.05：1 ratio matches, and can prevent gas from escaping from V-arrangement grooving 2
Dissipate leakage.
8 middle part of the filling liquid channel is equipped with check valve 7, and the flow direction of the check valve 7 is from top to bottom.
It includes parallel conducting wire 18 and plug 17 in parallel, the parallel conducting wire 18 that element is connected in parallel described in the step 4)
Both ends connection plug 17 in parallel.
Explosion case
Direct injection is carried out based on V-arrangement grooving on excavation contour line and orients gas blast, referring to Fig.1-7, including with
Lower step：
1) in the practical blasting engineering that certain rock consolidating coefficient is 13.0, tier hole is drilled out along excavation contour line,
Respectively No.1 blasthole 19, two gunfire holes 20, three gunfire holes 21, four gunfire holes 22 and five gunfire holes 23, hole depth 3.0m, aperture
For 40mm, pitch-row 1.0m；
2) two V-arrangement groovings 2 are cut out in the predetermined splitting scope of hole wall upper edge of each blasthole, the depth of V-arrangement grooving 2 is
The apex angle of 12mm, V-arrangement grooving 2 are 40 °, and the angular bisector of 2 apex angle of V-arrangement grooving is overlapped with predetermined splitting scope.
3) two inverted V-shaped ridges are arranged in 6 both sides of hole packer in the fever hole sealing device for selecting 6 a diameter of 42mm of hole packer
12, the apex angle of inverted V-shaped ridge 12 is 40 °, is highly 12.6mm, by 16 raw material of solid powdery exothermic mixture, by mass percentage
For Calcium perchlorate：Sodium nitrate：Starch：This sodium sulfonate of detergent alkylate：Chinese littleleaf box wood powder：Dry method wood-fibred：Calcirm-fluoride：Aluminium powder：Phenol
Urea formaldehyde=15%：45%：14%：4%：4%：5%：5%：5%：3% ratio is uniformly mixed and obtains exothermic mixture 16, and fills
It fills out in heat-generating pipe 3, sealing-plug 4 is installed while heating wire 15 is put into exothermic mixture 16 above exothermic mixture 16, later will
14 connecting adapter 13 of ignition wire, then connector 5 is mounted on 3 top of heat-generating pipe, blasthole is cleared up, then in each blasthole
Installation fever hole sealing device, the injection liquid CO above the filling liquid channel 8 among hole packer 62, liquid CO2Pass through list
To valve 7, later again as filling liquid channel 8 reaches the outlet that 5 side of connector opens up, since connector 5 and 3 diameter of heat-generating pipe are small
In 6 diameter of hole packer, so liquid CO2It can be directly injected into blasthole from along hole wall；
4) length and the matched parallel conducting wire 18 of pitch-row are selected, connection plug 17 in parallel in 18 both ends of parallel conducting wire is to obtain
It is connected in parallel element, the plug in parallel 17 of 18 one end of parallel conducting wire is inserted into the electricity in No.1 blasthole 19 at the top of fever hole sealing device
Source exports jack 9, and the plug in parallel of the other end is inserted into the power inlet jack at the top of fever hole sealing device in two gunfire holes 20
11, behind carry out this operation successively, to by No.1 blasthole 19, two gunfire holes 20, three gunfire holes 21, four gunfire holes 22 and five
Fever hole sealing device in gunfire hole 23 is all connected in parallel；
5) the fever hole sealing device being inserted into the power output plug 24 of 25 front end of power supply transportion wire in No.1 blasthole 19
The other end of the power inlet jack 11 at top, power supply transportion wire 25 connects output port of power source 26, opens power supply control and opens
It closes 27 and is powered and detonate.
Operation principle：In use, cutting out two V-arrangement groovings 2 in the predetermined splitting scope of blasthole wall upper edge first；Then in big gun
Installation fever hole sealing device in hole, the injection liquid CO above the filling liquid channel 8 among hole packer 62, liquid CO2Lead to from top to bottom
Check valve 7 is crossed, later again as filling liquid channel 8 reaches the outlet that 5 side of connector opens up, since connector 5 and heat-generating pipe 3 are straight
Diameter is less than 6 diameter of hole packer, so liquid CO2It can be directly injected into blasthole from along hole wall, the present invention is sealed by generating heat
Filling liquid channel 8 in aperture apparatus by liquid CO2It is directly injected into blasthole, it, can using blasthole as inflating medium memory structure
To avoid the inflating medium memory structure of the forms such as steel pipe or steel cylinder in traditional gas explosion is used, explosive is not only reduced
Manufacturing difficulty, and generate heat hole sealing device may be reused, save economic cost；Then by 18 one end of parallel conducting wire
Plug in parallel 17 be inserted into previous blasthole generate heat hole sealing device at the top of power outlet jack 9, the plug in parallel of the other end
17 are inserted into the power inlet jack 11 at the top of fever hole sealing device in the latter blasthole, to seal the fever in all blastholes
Heating wire 15 in aperture apparatus is connected in parallel, and the power output plug 24 of 25 front end of power supply transportion wire is finally inserted into No.1
The power inlet jack 11 at the top of fever hole sealing device in blasthole 19, the other end connection power supply output of power supply transportion wire 25
Port 26 opens the energization of power control switch 27 and detonates, and the present invention inside fever hole sealing device by being arranged various electricity
Circuit component, when use only need to use be connected in parallel element and simply connected, easy to operate, the line for avoiding scene is mixed
Disorderly, work efficiency is high；Be powered after same size electric current from anode to cathode according to " two into four go out wire connector 10 → turn
The order that 13 → heating wire of connector, 15 → adapter 13 → bis- goes out wire connector 10 " into four passes through in each fever hole sealing device
Heating wire 15, heating wire 15 lights exothermic mixture 16, and exothermic mixture 16 discharges a large amount of heat so that the liquid CO in blasthole2It is fast
Speed gasification expansion generates huge pressure to hole wall, gas pressure while so that 2 tip of V-arrangement grooving is generated area of stress concentration,
Again so that 2 root of V-arrangement grooving nearby generates compression and low Tension Stress Zone (also known as crack growth inhibition zone), in the two mechanics
Under the action of effect, crackle extends extension since 2 tip of V-arrangement grooving to the predetermined splitting scope in forward position, and inhibits crackle
Generation in other positions and direction.The present invention is cut out before carrying out gas blast in the predetermined splitting scope of blasthole wall upper edge
Two V-arrangement groovings 2 can effectively control the propagation direction in crack in rock gas blasting process, ensure quick-fried in gas in rock
During broken 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, any one 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. a kind of direct injection based on V-arrangement grooving orients gas blast method, it is characterised in that：It carries out according to the following steps：
1) bore operation is carried out on excavation contour line according to blasting design scheme；
2) two V-arrangement groovings are cut out in the predetermined splitting scope of blasthole wall upper edge；
3) fever hole sealing device is installed in blasthole, then liquid gas is injected into blasthole by the hole sealing device that generates heat；
4) 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；
5) power on and detonate.
2. a kind of direct injection based on V-arrangement grooving as described in claim 1 orients gas blast method, feature exists
In：The depth of V-arrangement grooving described in the step 2) matches in proportion with blasthole diameter.
3. a kind of direct injection based on V-arrangement grooving as described in claim 1 orients gas blast method, feature exists
In：The apex angle of V-arrangement grooving described in the step 2) is between 35 ° -45 °, and the angular bisector of V-arrangement grooving apex angle is broken with predetermined
Split direction coincidence.
4. a kind of direct injection based on V-arrangement grooving as described in claim 1 orients gas blast method, feature exists
In：The hole sealing device that generates heat described in the step 3) includes hole packer, connector and heat-generating pipe, the hole packer bottom with connect
Part is connected, and is integrally formed with connector, filling liquid channel is provided among the hole packer and connector, the filling liquid channel is even
The side of fitting offers outlet, 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 input terminals for going out wire connector into four are connected with power inlet jack, and described two into four go out one of wire connector
Output end is connected with power outlet jack, and the lower section of the connector is equipped with adapter, the adapter connection in heat-generating pipe
Two into four go out another output end of wire connector, and the connector is mounted in heat-generating pipe, the fever bottom of the tube filling hair
Thermit powder, the exothermic mixture top are equipped with sealing-plug, run through ignition wire, the output of the ignition wire inside the sealing-plug
End is connected with heating wire, and the input terminal of ignition wire is connect with adapter.
5. a kind of direct injection based on V-arrangement grooving as claimed in claim 4 orients gas blast method, feature exists
In：The hole packer diameter and blasthole diameter match in proportion.
6. a kind of direct injection based on V-arrangement grooving as claimed in claim 4 orients gas blast method, feature exists
In：There are two inverted V-shaped ridges for the hole packer both sides, and inverted V-shaped ridge size and V-arrangement grooving size match in proportion.
7. a kind of direct injection based on V-arrangement grooving as claimed in claim 4 orients gas blast method, feature exists
In：The filling liquid channel middle is equipped with check valve, and the flow direction of the check valve is from top to bottom.
8. a kind of direct injection based on V-arrangement grooving as described in claim 1 orients gas blast method, feature exists
In：It includes parallel conducting wire and plug in parallel that element is connected in parallel described in the step 4), and the parallel conducting wire both ends connection is simultaneously
Join plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810183217.9A CN108442928B (en) | 2018-03-06 | 2018-03-06 | A kind of direct injection orientation gas blast method based on V-arrangement grooving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810183217.9A CN108442928B (en) | 2018-03-06 | 2018-03-06 | A kind of direct injection orientation gas blast method based on V-arrangement grooving |
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| Publication Number | Publication Date |
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| CN108442928A true CN108442928A (en) | 2018-08-24 |
| CN108442928B CN108442928B (en) | 2019-10-25 |
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| CN201810183217.9A Active CN108442928B (en) | 2018-03-06 | 2018-03-06 | A kind of direct injection orientation gas blast method based on V-arrangement grooving |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111692935A (en) * | 2020-06-18 | 2020-09-22 | 南京创华安全技术有限公司 | Blasting construction method of blasting equipment |
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| Publication number | Publication date |
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| CN108442928B (en) | 2019-10-25 |
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