CN115950317A - Underwater uncoupled explosive charging blasting method - Google Patents
Underwater uncoupled explosive charging blasting method Download PDFInfo
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- CN115950317A CN115950317A CN202211587022.3A CN202211587022A CN115950317A CN 115950317 A CN115950317 A CN 115950317A CN 202211587022 A CN202211587022 A CN 202211587022A CN 115950317 A CN115950317 A CN 115950317A
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- air bag
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- blasting
- blast hole
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- 238000005422 blasting Methods 0.000 title claims abstract description 54
- 239000002360 explosive Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000011435 rock Substances 0.000 claims abstract description 13
- 230000006378 damage Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
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Abstract
The application discloses a method for underwater uncoupled charging blasting, which relates to the field of underwater blasting and comprises the following steps: s1, excavating blast holes in a rock stratum; s2, arranging an air bag in the blast hole, extruding water in the blast hole by the air bag in an inflated state, placing explosives in the air bag, and reserving a gap between the inner wall of the air bag and the outer wall of the explosives; and S3, underwater blasting. The method has the advantages that the blasting is controlled within a reasonable range, a relatively flat blasting outline is reserved, and the effect of large-range damage of the rock stratum is avoided.
Description
Technical Field
The invention relates to the field of underwater blasting, in particular to an underwater uncoupled charging blasting method.
Background
The presplitting blasting is that a through crack with a certain width is blasted along a design contour line before the main blasting area is blasted, and when the main blasting area is blasted, the damage degree of the through crack to the reserved rock mass is controlled, so that a smoother blasting contour is obtained.
The conventional procedures of pre-splitting blasting of rock stratum in water are as follows: and excavating blast holes in the rock stratum, and putting explosives into the blast holes through a non-coupled explosive loading structure for blasting.
However, in the conventional underwater rock layer blasting, water enters the blast hole, and the water is hardly compressed, which means that the shock wave hardly loses energy when propagating in the water, so that the blasting range of the explosive when blasting in seawater is wide, the blasting power is large, and for pre-splitting blasting, the manner is difficult to form a relatively flat blasting profile, and the rock layer is damaged in a large range.
Therefore, the application provides a method for underwater uncoupled charge blasting, which is beneficial to controlling the blasting range.
Disclosure of Invention
In order to control the range of underwater rock stratum blasting and enable a relatively complete blasting profile to be formed during presplitting blasting, the application provides a method for underwater uncoupled charging blasting.
The underwater uncoupled charging blasting method adopts the following technical scheme:
a method of underwater uncoupled charge blasting comprising the steps of:
s1, excavating blast holes in a rock stratum;
s2, arranging an air bag in the blast hole, extruding water in the blast hole by the air bag in an inflated state, placing explosives in the air bag, and reserving a gap between the inner wall of the air bag and the outer wall of the explosives;
and S3, underwater blasting.
Through adopting above-mentioned technical scheme, place the explosive in the gasbag, leave the clearance between the inner wall that makes explosive periphery and gasbag, be full of the air in the gasbag after aerifing, thereby regard the bed course when the air explodes, because the air is compressed very easily, shock wave is very fast at compressed air's in-process energy loss, the effective killer radius ratio aquatic that also is the explosive under the condition of air as the bed course is little very much, thereby make the blasting be controlled in a reasonable scope, relatively level and smooth blasting profile has been kept, avoid with the destruction on a large scale of stratum.
Preferably, in step S2, the explosive is placed in the air bag, then the air bag filled with the explosive is placed in the blast hole, the air bag is inflated after the air bag is placed in position, and the air bag is expanded to extrude most of water in the blast hole.
By adopting the technical scheme, the air bag is placed and inflated firstly, so that the placing difficulty of the air bag is reduced, and the air bag in an uninflated state can be conveniently placed in the blast hole.
Preferably, in step S2, the explosive is placed in the airbag, then the airbag filled with the explosive is inflated, then the airbag in the expanded state is lowered into the blast hole, and most of the water in the blast hole is squeezed out.
By adopting the technical scheme, the mode of firstly inflating and then placing the air bag is convenient for observing the inflation quantity of the air bag outside the blast hole.
Preferably, when the air bag is in an expansion state, a gap is reserved between the outer wall of the air bag and the inner wall of the blast hole.
By adopting the technical scheme, if the diameter of the expanded air bag is larger than or equal to the diameter of the blast hole, the placing difficulty of the air bag is greatly improved, and the diameter of the expanded air bag is controlled to be smaller than the diameter of the blast hole, so that the placing difficulty of the air bag is reduced.
Preferably, a positioning component for placing explosive is arranged in the air bag.
Through adopting above-mentioned technical scheme, setting up of locating component is fixed a position the explosive when conveniently placing the explosive, when guaranteeing that the gasbag is in the gas filled state, and the inner wall of gasbag equals with the distance of explosive periphery.
Preferably, the positioning member comprises a lower positioning ring fixed to a middle position of the bottom wall of the airbag.
Preferably, the positioning member further comprises an upper positioning ring fixed to the top of the airbag at an intermediate position.
Through adopting above-mentioned technical scheme, the setting of lower holding ring is used for fixing a position the explosive of bottom, and the setting of going up the holding ring is used for fixing a position the explosive at top.
Preferably, in step S2, the explosive is placed in the airbag by placing the explosive in the airbag at an opening at the top of the airbag, and then sealing the opening at the top of the airbag.
Preferably, an opening and closing part for controlling opening and closing of the opening is arranged at the opening of the air bag.
By adopting the technical scheme, the opening and closing of the air bag opening are controlled by the opening and closing part, and the explosive is conveniently placed in the inner cavity of the air bag.
Preferably, the opening and closing part is in threaded connection with the opening of the air bag.
Through adopting above-mentioned technical scheme, the connection compactness is good with the connected mode of the opening part of gasbag to above-mentioned portion that opens and shuts, reduces the condition appearance of gasbag gas leakage.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the air is used as a cushion layer during blasting, and because the air is easily compressed, the energy loss of the shock wave in the air compression process is very quick, namely the effective killing radius of the explosive under the condition that the air is used as the cushion layer is much smaller than that of water, so that the blasting is controlled within a reasonable range, a relatively flat blasting profile is reserved, and the rock stratum is prevented from being damaged in a large range;
2. the mode of placing the air bag and refilling air firstly reduces the placing difficulty of the air bag and is convenient for placing the air bag in an uninflated state in the blast hole;
3. the mode of firstly inflating and then placing the air bag is convenient for observing the inflating quantity of the air bag outside the blast hole.
Drawings
Fig. 1 is a schematic view showing the overall structure of a blast hole, explosive, an air bag, a water layer, a positioning member, and an opening/closing portion structure in the embodiment of the present application.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
Description of reference numerals:
1. blast holes; 2. an explosive; 21. a detonating cord; 3. an air bag; 4. a water layer; 5. a lower positioning ring; 6. an upper positioning ring; 7. an inner ring; 8. an outer ring; 81. and (7) sealing the cover.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
Example one
The embodiment of the application discloses a method for underwater uncoupled explosive charging blasting, which comprises the following steps:
s1, excavating blast holes 1:
excavating blast holes 1 in the rock stratum, wherein the blast holes 1 are vertically arranged cylindrical holes;
s2, charging:
the explosive 2 is placed in the air bag 3, the air bag 3 is arranged in a cylindrical shape when in an expansion state, a gap is reserved between the outer wall of the air bag 3 and the inner wall of the blast hole 1 when the air bag 3 is in the expansion state, and a water layer 4 is reserved between the outer wall of the air bag 3 and the inner wall of the blast hole 1.
The explosive 2 is placed in the gasbag 3 in a non-coupled charging mode, and a positioning component for positioning the explosive 2 is arranged in the gasbag 3. The positioning component comprises a lower positioning ring 5 fixed in the middle of the bottom wall of the air bag 3 and an upper positioning ring 6 fixed in the middle of the top of the air bag 3, the inner wall of the lower positioning ring 5 is in contact with the periphery of the explosive 2, and the inner wall of the upper positioning ring 6 is in contact with the periphery of the explosive 2. In order to reduce the difficulty of placing the explosive 2 at the bottommost end, the top end of the lower positioning ring 5 is provided with an outward-expanding opening.
The top end of the air bag 3 is provided with an opening for placing the explosive 2, and the opening is provided with an opening-closing part for controlling the opening and closing of the opening-closing part.
In this embodiment, the opening/closing portion includes an inner ring 7 fixed to the top end of the opening of the airbag 3, an outer ring 8 screwed to the outside of the inner ring 7, and a cover 81 fixed to the top end of the outer ring 8. In other embodiments, the opening/closing portion may be a cover body adhered to the opening to control the opening/closing of the opening.
S3, placing an air bag 3:
the air bag 3 filled with the explosive 2 is placed in the blast hole 1, the uninflated air bag 3 is placed in the blast hole 1 after a heavy object is fixed at the bottom of the air bag 3, the arrangement of the heavy object facilitates the sinking of the air bag 3, the placement position of the air bag 3 is also conveniently controlled, and the axial line of the air bag 3 is prevented from deviating from the axial line of the blast hole 1.
S4, inflating the air bag 3:
the air bag 3 is inflated through the inflation port on the air bag 3 until the air bag 3 is in an expansion state, and most of water in the blast hole 1 is continuously extruded out in the inflation process of the air bag 3.
S5, underwater blasting:
the explosive 2 is detonated by the detonating cord 21 to perform underwater blasting.
In the method for underwater uncoupled explosive charging blasting, air is arranged between an explosive 2 and a water layer 4 to serve as a cushion layer during blasting, so that energy loss of shock waves in the process of compressing air is very fast, namely the effective killing radius of the explosive 2 under the condition that the air serves as the cushion layer is much smaller than that of water, the blasting is controlled within a reasonable range, a relatively flat blasting outline is reserved, and the rock stratum is prevented from being damaged on a large scale.
Example two
The second embodiment of the application discloses a method for underwater uncoupled charging blasting, which is different from the first embodiment in that:
after the charging process of the step S2 is completed, the air bag 3 filled with the explosive 2 is inflated, then the air bag 3 in the expansion state is put down into the blast hole 1, and most of water in the blast hole 1 is extruded out.
The manner of inflating and repositioning the airbag 3 disclosed in this embodiment facilitates observation of the inflation amount of the airbag 3 outside the blast hole 1.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A method for underwater uncoupled powder-charging blasting is characterized by comprising the following steps:
s1, excavating blast holes (1) in a rock stratum;
s2, an air bag (3) is arranged in the blast hole (1), water in the blast hole (1) is extruded out by the air bag (3) in an inflated state, an explosive (2) is placed in the air bag (3), and a gap is reserved between the inner wall of the air bag (3) and the outer wall of the explosive (2);
and S3, underwater blasting.
2. A method of underwater uncoupled charge blasting according to claim 1, characterised in that: in the step S2, the explosive (2) is placed in the air bag (3), then the air bag (3) filled with the explosive (2) is placed in the blast hole (1), the air bag (3) is inflated after the air bag (3) is placed in place, and the air bag (3) is expanded to extrude most of water in the blast hole (1).
3. A method of underwater uncoupled charge blasting according to claim 1, characterised in that: in the step S2, the explosive (2) is placed in the air bag (3), then the air bag (3) filled with the explosive (2) is inflated, the air bag (3) in the expansion state is placed down into the blast hole (1), and most of water in the blast hole (1) is extruded out.
4. A method of underwater uncoupled charge blasting according to claim 3, characterised in that: when the air bag (3) is in an expansion state, a gap is reserved between the outer wall of the air bag (3) and the inner wall of the blast hole (1).
5. A method of underwater uncoupled charge blasting as claimed in claim 1 wherein: and a positioning component for placing the explosive (2) is arranged in the air bag (3).
6. A method of underwater uncoupled charge blasting according to claim 5, characterised in that: the positioning component comprises a lower positioning ring (5) fixed in the middle of the bottom wall of the air bag (3).
7. A method of underwater uncoupled charge blasting according to claim 6, characterised in that: the positioning component also comprises an upper positioning ring (6) fixed at the middle position of the top of the air bag (3).
8. A method of underwater uncoupled charge blasting according to claim 1, characterised in that: in the step S2, the specific step of placing the explosive (2) in the air bag (3) is to place the explosive (2) in the air bag (3) at the opening at the top of the air bag (3) and then seal the opening at the top of the air bag (3).
9. A method of underwater uncoupled charge blasting according to claim 8, characterised in that: an opening and closing part for controlling the opening to be opened and closed is arranged at the opening of the air bag (3).
10. A method of underwater uncoupled charge blasting according to claim 9, characterised in that: the opening and closing part is in threaded connection with the opening of the air bag (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211587022.3A CN115950317A (en) | 2022-12-10 | 2022-12-10 | Underwater uncoupled explosive charging blasting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211587022.3A CN115950317A (en) | 2022-12-10 | 2022-12-10 | Underwater uncoupled explosive charging blasting method |
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| Publication Number | Publication Date |
|---|---|
| CN115950317A true CN115950317A (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211587022.3A Pending CN115950317A (en) | 2022-12-10 | 2022-12-10 | Underwater uncoupled explosive charging blasting method |
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| CN (1) | CN115950317A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116697844A (en) * | 2023-08-07 | 2023-09-05 | 山西中煤平朔爆破器材有限责任公司 | Strip mine rock perforation blasting charging device and charging method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030021317A (en) * | 2001-09-05 | 2003-03-15 | 강대우 | Rock Blasting Method using Air Bags embeded in Explosive Layers |
| CN202400269U (en) * | 2011-12-29 | 2012-08-29 | 湖南神斧集团向红机械化工有限责任公司 | Suspension gasbag |
| CN202432938U (en) * | 2011-12-27 | 2012-09-12 | 武汉科技大学 | Explosive cylinder for deep water blasting |
| CN209445908U (en) * | 2018-12-28 | 2019-09-27 | 钦州学院 | Using the radial underwater Cutting Seam Cartridge Blasting device not coupled |
| CN216668446U (en) * | 2022-02-28 | 2022-06-03 | 中交一公局第一工程有限公司 | Novel air bubble interval uncoupled explosive loading device |
| CN114923386A (en) * | 2022-04-19 | 2022-08-19 | 武汉理工大学 | Water-proof charging device and method in hole suitable for underwater blasting |
-
2022
- 2022-12-10 CN CN202211587022.3A patent/CN115950317A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030021317A (en) * | 2001-09-05 | 2003-03-15 | 강대우 | Rock Blasting Method using Air Bags embeded in Explosive Layers |
| CN202432938U (en) * | 2011-12-27 | 2012-09-12 | 武汉科技大学 | Explosive cylinder for deep water blasting |
| CN202400269U (en) * | 2011-12-29 | 2012-08-29 | 湖南神斧集团向红机械化工有限责任公司 | Suspension gasbag |
| CN209445908U (en) * | 2018-12-28 | 2019-09-27 | 钦州学院 | Using the radial underwater Cutting Seam Cartridge Blasting device not coupled |
| CN216668446U (en) * | 2022-02-28 | 2022-06-03 | 中交一公局第一工程有限公司 | Novel air bubble interval uncoupled explosive loading device |
| CN114923386A (en) * | 2022-04-19 | 2022-08-19 | 武汉理工大学 | Water-proof charging device and method in hole suitable for underwater blasting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116697844A (en) * | 2023-08-07 | 2023-09-05 | 山西中煤平朔爆破器材有限责任公司 | Strip mine rock perforation blasting charging device and charging method |
| CN116697844B (en) * | 2023-08-07 | 2023-10-03 | 山西中煤平朔爆破器材有限责任公司 | Strip mine rock perforation blasting charging device and charging method |
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