CN114963910A - Blasting charge structure and construction method thereof - Google Patents
Blasting charge structure and construction method thereof Download PDFInfo
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- CN114963910A CN114963910A CN202210790300.9A CN202210790300A CN114963910A CN 114963910 A CN114963910 A CN 114963910A CN 202210790300 A CN202210790300 A CN 202210790300A CN 114963910 A CN114963910 A CN 114963910A
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- water
- cartridge
- explosive
- filter screen
- blasting
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- 238000005422 blasting Methods 0.000 title claims abstract description 61
- 238000010276 construction Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 108
- 239000002360 explosive Substances 0.000 claims abstract description 81
- 239000011358 absorbing material Substances 0.000 claims abstract description 39
- 239000000428 dust Substances 0.000 claims abstract description 31
- 238000010521 absorption reaction Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 claims abstract description 16
- 238000002791 soaking Methods 0.000 claims abstract description 3
- 239000011347 resin Substances 0.000 claims description 33
- 229920005989 resin Polymers 0.000 claims description 33
- 239000002250 absorbent Substances 0.000 claims description 30
- 238000001816 cooling Methods 0.000 claims description 26
- 230000002745 absorbent Effects 0.000 claims description 20
- 230000000977 initiatory effect Effects 0.000 claims description 9
- 238000011068 loading method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 3
- 230000006855 networking Effects 0.000 claims description 3
- 239000011164 primary particle Substances 0.000 claims 2
- 238000009434 installation Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000009430 construction management Methods 0.000 abstract description 4
- 238000005429 filling process Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 17
- 239000000839 emulsion Substances 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 241001122767 Theaceae Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 208000028571 Occupational disease Diseases 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a blasting charge structure and a construction method thereof, wherein the blasting charge structure comprises a cartridge, a water absorbing material, a filter screen, a cartridge, a detonating device and a blocking object; wherein the water absorbing material is used for absorbing water or water solution; the filter screen is used for packaging water absorption materials. Before charging, the filter screen filled with the water-absorbing material is put into water for soaking, and is taken out for standby after the filter screen expands into a cylindrical shape; when charging, the water absorbing material soaked in water and the explosive are loaded into the explosive cartridge in different orders. The blasting charge structure disclosed by the invention can avoid the problem that the water bag in the traditional water pressure blasting is scratched by rocks on the wall of the blasting cartridge in the filling process, so that water leakage occurs, and further the water pressure blasting effect and the dust fall effect are influenced. In addition, the explosive charging structure can prolong the action time of explosive gas, is favorable for rock breaking, saves time and labor in practical application, is simple and convenient to operate, is favorable for field construction management, and has remarkable economic benefit and social benefit.
Description
Technical Field
The invention relates to the technical field of engineering blasting, in particular to a blasting charge structure and a construction method thereof.
Background
In railway construction, hydraulic engineering, mining engineering and other earth and rockfill engineering, blasting is the most widely and effectively rock breaking means at present, however, dust pollution is easily generated in the blasting process. In recent years, the problem of preventing and controlling atmospheric dust pollution is widely regarded, and therefore, many technicians search for a dust reduction technology. Chinese patent application No. 200710051361.9 discloses an energy-concerving and environment-protective engineering water pressure blasting big gun hole and blasting method thereof, and this patent needs to pack into a certain amount of water toward explosive cartridge case, and water takes place the atomizing under the explosive effect to play the dust fall effect, however, pack into water and need use the water bag toward explosive cartridge case, and the water bag is damaged easily in the work progress, thereby leads to water leakage, and then influences the dust fall effect. In contrast, chinese patent application No. 201810812578.5 discloses a rapid-loading hydraulic blasting device, which effectively protects a water bag from being scratched by rocks inside a blasthole, but the device requires auxiliary tools such as a diversion trench and a lantern ring, so that the device is too cumbersome in practical application, is not favorable for field construction management, and greatly limits the application of the device.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a blasting powder charging structure which can avoid the problem that a water bag in the traditional water pressure blasting is scratched by rocks on the wall of a blasting cartridge in the filling process, so that water leakage occurs, and the water pressure blasting effect and the dust falling effect are further influenced. In addition, the explosive charging structure can prolong the acting time of explosive gas and is beneficial to rock crushing.
Another object of the invention is: the construction method of the blasting charge structure is time-saving and labor-saving in practical application, is simple and convenient to operate, is beneficial to field construction management, and has remarkable economic benefit and social benefit.
The technical scheme for solving the technical problems is as follows:
the utility model provides a blasting loaded constitution, includes cartridge case to and set up explosive package, detonating equipment, plug and the cooling dust collector inside cartridge case, the plug is located the orifice department of cartridge case, its characterized in that, cooling dust collector includes that a plurality of is by the cooling dust removal package that filter screen parcel water absorption material formed, the cooling dust removal package is installed with explosive package irregular arrangement in cartridge case.
In a preferred embodiment of the present invention, the water-absorbing material can absorb more than 2 times of its own weight of water and has a strong water-retaining ability, such as super water-absorbent resin or sponge material or cotton.
In a preferable embodiment of the present invention, the water-absorbing material (before water absorption) has a particle size ranging from 0.1mm to 10mm, and the smaller the particle size, the faster the water absorption rate.
In a preferred embodiment of the invention, the screen is flexible and is cylindrical under the force of the swelling of the water-absorbing material (after water absorption), the diameter of the cylinder being the same as the diameter of the cartridge.
In a preferred embodiment of the present invention, the amount of the water-absorbing material in the filter screen is calculated according to the volume of the filter screen and the water absorption capacity of the water-absorbing material.
In a preferred embodiment of the present invention, the diameter of the holes of the filter screen is smaller than the particle size of the water-absorbing material (before water absorption), so as to ensure that the water-absorbing material does not leak out of the filter screen.
In a preferred embodiment of the present invention, the explosive package is typically an emulsion explosive or an ammonium nitrate fuel oil explosive.
In a preferred embodiment of the present invention, the initiating device is generally a detonator or a detonating cord.
In a preferred embodiment of the present invention, the plug is generally sand, soil, or a combination thereof.
In a preferred embodiment of the present invention, the cartridge may be a tunneling blasting cartridge, a surface mine bench blasting cartridge, or the like.
A construction method of a blasting charge structure comprises the following steps:
1) designing the diameter and length of the filter screen according to the diameter of the cartridge;
2) calculating the using amount of the water absorbing material according to the volume of the filter screen and the water absorption multiple of the water absorbing material;
3) filling the water absorbing material into the filter screen and then sealing;
4) before charging, putting the filter screen filled with the water-absorbing material into water for soaking;
5) taking out the filter screen for later use after the filter screen expands to be cylindrical;
6) filling the explosive cartridge with the initiation device inside;
7) loading the water-absorbing material soaked in water and the rest of the explosive bags into the explosive box in different orders;
8) loading said plug into said cartridge port location;
9) and D, detonating after networking the detonating equipment.
The working principle of the blasting charge structure is that water is introduced into the explosive cartridge by utilizing the strong water retention capacity of the water-absorbing material, the water introduced into the explosive cartridge is absorbed by the water-absorbing material wrapped by the filter screen, and the water-absorbing material is formed after expansion, so that the explosive cartridge is blocked. After detonating the explosive, receive to explode and produce high-pressure gas extrusion, with the water atomization in the water-containing material, the tiny drop of water after the atomizing in blasting process adsorbs the harmful tiny particle dust in the exploding gas to play dust fall and cooling effect, it can avoid water bag in traditional water pressure blasting to be cut at the filling in-process by cartridge case pore wall rock, thereby the problem of leaking appears, and then influences water pressure blasting effect and dust fall effect.
Compared with the prior art, the invention has the following beneficial effects:
1. the blasting charge structure provided by the invention greatly reduces the pollution of blasting dust to the environment, avoids the problem of water leakage caused by the fact that a water bag in the traditional hydraulic blasting is scratched by rocks on the wall of a cartridge case in the filling process, further influences the hydraulic blasting effect and the dust fall effect, and simultaneously atomizes water in a water-containing material under the extrusion of blasting high-pressure gas after explosive blasting, and small water drops atomized in the blasting process adsorb harmful small particle dust in the blasting gas, so that the harmful small particle dust in the air after blasting is reduced, and the pollution of the blasting dust to the environment is reduced. The operators can suck less harmful small-particle dust after blasting, and the risk of occupational diseases is reduced.
2. The blasting charge structure provided by the invention can be used for improving the safety of high-temperature blasting construction, and can absorb heat and release water vapor by utilizing the larger specific heat capacity of water, so that the explosive and blasting equipment filled in the explosive cartridge are in a wet state, and the explosive and blasting equipment are kept in a safe temperature environment within a certain time.
3. The blasting charging structure and the construction method thereof provided by the invention are time-saving and labor-saving in practical application, are simple and convenient to operate, are beneficial to field construction management, and have remarkable economic and social benefits.
Drawings
Fig. 1 is a structural schematic diagram of a specific blasting charge structure in a first embodiment of the invention;
fig. 2 is a specific structural schematic diagram of a blasting charge structure in a second embodiment of the invention;
fig. 3 is a specific structural schematic diagram of a blasting charge structure in the third embodiment of the present invention.
Reference numerals:
explosive cartridge-1; an explosive package-2; a detonating device-3; plug-4; cooling and dedusting bag-5; a filter screen-6; water absorbing material-7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of embodiments of the present application, generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The present invention will be described in further detail with reference to examples and fig. 1 to 3, but the present invention is not limited thereto.
Example one
Referring to fig. 1, the blasting charge structure of the present invention comprises: the explosive cartridge comprises an explosive cartridge 1, and an explosive bag 2, an initiating device 3, a blocking object 4 and a cooling and dedusting device which are arranged inside the explosive cartridge 1, wherein the blocking object 4 is positioned at the hole of the explosive cartridge 1, and the cooling and dedusting device is characterized by comprising a plurality of cooling and dedusting bags 5 formed by wrapping water absorbing materials 7 by a filter screen 6, wherein the cooling and dedusting bags 5 and the explosive bag 2 are arranged in the explosive cartridge 1 in an irregular way; wherein, the water absorbing material 7 is used for absorbing water or water solution, and the filter screen 6 is used for packaging the water absorbing material 7.
Wherein, the quantity of explosive package 2 is selected to be 7, and the 5 quantity of cooling dust removal package is 4, and 4 quantity of plugs are 2 books, and at explosive cartridge 1 from the bottom to the loading order in drill way: the bottom is filled with 1 cooling dedusting bag 5, the middle is filled with 7 explosive bags 2, the part close to the orifice is filled with 3 cooling dedusting bags 5, and the orifice is filled with 2 rolls of plugs 4.
The explosive cartridge 1 is a horizontal explosive cartridge 1 in tunneling blasting, the diameter of the horizontal explosive cartridge is 42mm, and the hole depth is 4 m; cartridge 11 is at 20 deg. and is a normal cartridge 1.
The water absorbing material 7 is super absorbent resin or sponge material or cotton, the particle size of the super absorbent resin before water absorption is 1mm, the super absorbent resin can absorb water more than 20 times of the self weight of the super absorbent resin, the super absorbent resin has strong water retention capacity, and the smaller the particle size is, the faster the water absorption rate is.
The filter screen 6 is tea bag filter paper, has soft characteristic and hydrophilicity, is cylindrical under the action of expansive force after the water absorption material 7 absorbs water, and has the diameter of 32mm and the length of 30 cm.
Because the density of the super absorbent resin is 1.08g/cm 3 The volume of the water-absorbing resin can be expanded by about 20 times, and the volume of the filter screen 6 is 240cm 3 And the calculation shows that the mass of the super-absorbent resin in the filter screen 6 is not less than 15 g.
As the particle size of the super water-absorbent resin before water absorption is 1mm, the diameter of the holes of the filter screen 6 is 0.5mm, and the super water-absorbent resin is ensured not to leak out of the filter screen 6.
The explosive package 2 is filled with emulsion explosive, the diameter of which is 32mm, and the length of which is 30 cm.
The initiation device 3 is an electronic digital detonator, and the initiation explosive cartridge 1 is manufactured by inserting the explosive package 2.
The mixture ratio of the plug 4 is as follows: the soil, sand and water are 5:1:1, the mixture can be manufactured by a stemming machine, the diameter of the mixture is 32mm, and the length of the mixture is 30 cm.
Example two
Referring to fig. 2, unlike the first embodiment, the number and arrangement sequence of the explosive cartridges 2, the temperature reducing and dust removing pack 5, and the blockages 4 in the explosive cartridge 1 are different, specifically:
wherein, the quantity of explosive package 2 is selected to be 3, and the 5 quantity of cooling dust removal package is 8, and 4 quantity of plugs are 2 books, and at explosive cartridge 1 from the bottom to the loading order in drill way: 3 cooling and dedusting bags 5 are filled at the bottom, the height of the cooling and dedusting bags is 0.3m, explosive bags 2 and the cooling and dedusting bags 5 are filled at intervals in the middle part, 3 cooling and dedusting bags 5 are filled at the part close to the hole opening, the height of the cooling and dedusting bags is 0.3m, and 2 rolls of plugs 4 are filled at the part of the hole opening.
The cartridge 1 is a vertical cartridge 1 in bench blasting of an open-pit coal mine, the diameter of the cartridge is 140mm, and the hole depth is 13 m; cartridge 1 is at a temperature of 200 deg. for high temperature cartridge 1.
The water absorbing material 7 is super absorbent resin or sponge material or cotton, the particle size of the super absorbent resin before water absorption is 0.5mm, the super absorbent resin can absorb water more than 20 times of the self weight of the super absorbent resin, the super absorbent resin has strong water retention capacity, and the smaller the particle size is, the faster the water absorption rate is.
The filter screen 6 is tea bag filter paper, has soft characteristic and hydrophilicity, is cylindrical under the action of expansive force after the water absorption material 7 absorbs water, and has the diameter of 110mm and the length of 10 cm.
Because the density of the super absorbent resin is 1.08g/cm 3 It can absorb water more than 20 times its own weight, i.e. the volume of water-absorbing resin can be expanded by about 20 times, and the volume of the above-mentioned filtering net 6 is 950cm 3 And the calculation shows that the mass of the super-absorbent resin in the filter screen 6 is not less than 45 g.
As the particle size of the super water-absorbent resin before water absorption is 0.5mm, the diameter of the holes of the filter screen 6 is 0.3mm, and the super water-absorbent resin is ensured not to leak out of the filter screen 6.
The inside of the explosive package 2 is provided with emulsion explosive, the diameter of which is 110mm, and the length of which is 35 cm.
The detonating device 3 is a detonating cord with the outer diameter of 5mm and the main component of Taian.
The plug 4 is rock powder and sand around the orifice.
EXAMPLE III
Referring to fig. 2, unlike the first and second embodiments, the number and arrangement sequence of the explosive cartridges 2, the temperature-reducing and dust-removing pack 5, and the blockages 4 in the explosive cartridge 1 are different, specifically:
the charging structure is filled from the bottom to the hole in the following sequence: the bottom is provided with 1 roll of cooling dedusting bag 5, the height of the bag is 0.35m, the lower middle position is filled with an emulsion explosive bag 2 with the height of 4.5m, the middle part is filled with water-absorbent resin with the height of 2m, the upper middle position is filled with an emulsion explosive bag 2 with the height of 4.5m, the near-orifice part is filled with 2 rolls of cooling dedusting bag 5, the height of the bag is 0.7m, and the orifice part is filled with 4.45m of blocking objects 4.
The explosive cartridge 1 is a vertical explosive cartridge 1 in bench blasting of an open-pit coal mine, the diameter of the explosive cartridge is 140mm, and the hole depth is 16.5 m; cartridge 1 is at 20 deg. to be a normal cartridge 1.
The water absorbing material 7 is super absorbent resin or sponge material or cotton, the particle size of the super absorbent resin before water absorption is 1mm, the super absorbent resin can absorb water more than 20 times of the self weight of the super absorbent resin, the super absorbent resin has strong water retention capacity, and the smaller the particle size is, the faster the water absorption rate is.
The filter screen 6 is tea bag filter paper, has soft characteristic and hydrophilicity, is cylindrical under the action of expansive force after the water absorption material 7 absorbs water, and has the diameter of 110mm and the length of 35 cm.
The density of the super absorbent resin is 1.08g/cm 3 The volume of the water-absorbing resin can be expanded by about 20 times, and the volume of the filter screen 6 is 3300cm 3 And the calculation shows that the mass of the super water-absorbing resin in the filter screen 6 is not less than 150 g.
As the particle size of the super water-absorbent resin before water absorption is 1mm, the diameter of the holes of the filter screen 6 is 0.6mm, and the super water-absorbent resin is ensured not to leak out of the filter screen 6.
The explosive is an emulsion explosive, the diameter of the emulsion explosive is 110mm, and the length of the emulsion explosive is 35 cm.
The initiation equipment 3 is an electronic digital detonator, and the explosive is required to be inserted to be made into the initiation explosive cartridge 1.
The plug 4 is rock powder and sand around the orifice.
Example four
Referring to fig. 1, 2 and 3, the construction method of the blasting charge structure of the embodiment includes the following steps:
1) designing the diameter and length of the filter screen 6 according to the diameter of the cartridge 1;
2) calculating the using amount of the water absorbing material 7 according to the volume of the filter screen 6 and the water absorption times of the water absorbing material 7;
3) the water absorbing material 7 is sealed after being filled into the filter screen 6;
4) before charging, the filter screen 6 filled with the water absorbing material 7 is soaked in water;
5) taking out the filter screen 6 for later use after the filter screen expands into a cylindrical shape;
6) the explosive bag 2 with the initiation device 3 is filled into the explosive cartridge 1;
7) the water absorbing material 7 soaked in water and the rest of the explosive bags 2 are filled into the explosive cartridge 1 in different orders;
8) loading said plug 4 into said cartridge 1 at the orifice location;
9) and (4) carrying out networking and then detonating the detonating equipment 3.
Referring to figures 1, 2 and 3, the working principle of the blasting charge arrangement of the present invention will be further described with reference to the accompanying drawings:
according to the invention, the water absorbing material 7 has strong water retention capacity, and water is introduced into the explosive cartridge 1, so that the dust fall and cooling effects are achieved, and the problem that water leakage occurs due to the fact that a water bag in the traditional hydraulic blasting is scratched by rocks on the wall of the explosive cartridge 1 in the filling process is avoided, and further the hydraulic blasting effect and the dust fall effect are influenced is solved. The water introduced into cartridge 1 is absorbed by water-absorbing material 7 wrapped by screen 6, and expands to form a water-containing material, which blocks cartridge 1. After the explosive is detonated, the water in the water-containing material is atomized by the extrusion of the detonation high-pressure gas, and the small water drops after atomization in the blasting process adsorb harmful small particle dust in the detonation gas, so that the pollution of the blasting dust to the environment is reduced.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (7)
1. The utility model provides a blasting loaded constitution, its characterized in that includes explosive cartridge (1) to and set up explosive cartridge (2), detonating equipment (3), plug (4) and the cooling dust collector inside explosive cartridge (1), plug (4) are located the drill way department of explosive cartridge (1), its characterized in that, cooling dust collector includes that a plurality of wraps up cooling dust removal package (5) that absorb water material (7) and form by filter screen (6), cooling dust removal package (5) and explosive cartridge (2) are the irregular arrangement installation in explosive cartridge (1).
2. A blast charge structure according to claim 1, characterised in that said water absorbent material (7) is super absorbent resin or sponge material or cotton.
3. A blast charge construction according to claim 2, characterised in that the water-absorbing material (7) has a primary particle size in the range 0.1-10 mm.
4. A blasting charge arrangement according to claim 1, characterised in that the sieve (6) has holes with a diameter smaller than the primary particle size of the water-absorbing material (7).
5. A blast charge construction according to claim 4, characterized in that said screen (6) is flexible and cylindrical under the effect of the expansion force of the water-absorbing material (7) after water absorption, the diameter of the cylinder corresponding to the diameter of the cartridge (1) of said cartridge (1).
6. Blasting charge configuration according to claim 5, characterised in that the amount of water-absorbing material (7) in the sieve (6) is set in dependence on the volume of the sieve (6) and the water absorption capacity of the water-absorbing material (7).
7. A method of construction using the blasting charge arrangement of claims 1 to 7, comprising the steps of:
1) designing the diameter and length of the filter screen (6) according to the diameter of the cartridge (1);
2) calculating the dosage of the water absorption material (7) according to the volume of the filter screen (6) and the water absorption multiple of the water absorption material (7);
3) the water absorption material (7) is filled into the filter screen (6) and then sealed;
4) before charging, the filter screen (6) filled with the water absorbing material (7) is put into water for soaking;
5) taking out the filter screen (6) for later use after the filter screen expands to be cylindrical;
6) the explosive bag (2) with the initiation device (3) arranged inside is filled into the explosive cartridge (1);
7) filling the water-absorbing material (7) soaked in water and the rest of the explosive bags (2) into the explosive cartridge (1) in different orders;
8) -loading said plug (4) into said cartridge (1) orifice location;
9) and (4) carrying out networking and then detonating the detonating equipment (3).
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| CN202210790300.9A CN114963910A (en) | 2022-07-05 | 2022-07-05 | Blasting charge structure and construction method thereof |
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| CN102679825A (en) * | 2011-03-09 | 2012-09-19 | 中铁十一局集团第一工程有限公司 | Blast tube of tunnel |
| CN205748141U (en) * | 2016-06-21 | 2016-11-30 | 中国水利水电第五工程局有限公司 | A kind of Tunnel Blasting charge constitution |
| CN109186389A (en) * | 2018-10-29 | 2019-01-11 | 武汉大学 | A kind of blasthole blocking up method |
| CN111780636A (en) * | 2019-04-04 | 2020-10-16 | 西南科技大学 | Device and method for high-temperature blasting of surface mine |
| CN212320555U (en) * | 2020-03-30 | 2021-01-08 | 福建省新华都工程有限责任公司 | Explosive top shielding device in blast hole |
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| CN217585518U (en) * | 2022-07-05 | 2022-10-14 | 中铁建大桥工程局集团第三工程有限公司 | Blasting loaded constitution |
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