CN113607000B - Composite blasting directional charging tube string device - Google Patents
Composite blasting directional charging tube string device Download PDFInfo
- Publication number
- CN113607000B CN113607000B CN202110843340.0A CN202110843340A CN113607000B CN 113607000 B CN113607000 B CN 113607000B CN 202110843340 A CN202110843340 A CN 202110843340A CN 113607000 B CN113607000 B CN 113607000B
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- charging
- hole
- tube
- charge
- group
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/22—Elements for controlling or guiding the detonation wave, e.g. tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
-
- 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
Abstract
The invention relates to a composite blasting directional charging tube string device. A composite blasting directional charging tube string device comprises a charging tube and an anti-slip tube cap; the charging tube is of a hollow cylindrical tubular structure, a plurality of groups of charging hole groups and a plurality of detonating cord clamping grooves are formed in the charging tube, and a pair of charging tubes are connected with the through holes; each group of charging hole groups comprises a charging hole opening hole and charging Kong Weikong, and the connecting line of the center of the charging hole opening hole and the center of the charging Kong Weikong is perpendicular to the axis of the charging tube; from top to bottomSpacing between group of charge hole group center lines and next group of charge hole group center linesIncreasing with increasing distance from the top end of the charge tube. The device is simple and portable and is suitable for underground construction of coal mines.
Description
Technical Field
The invention relates to a composite blasting directional charging tube string device. The method is particularly suitable for a charging tube string structure when the coal stratum is subjected to directional blasting by adopting a composite blasting method in the field of coal mines.
Background
In the field of coal mining, the control of roof is the key problem of coal mining all the time, and after the coal seam exploitation, hard roof large tracts of land is suspended in the goaf and is caused working face ore pressure to appear frequently, once take place suddenly to collapse, can cause serious problems such as equipment damage, casualties. The current method for controlling the strong mining pressure of the stope affected by the hard roof comprises the following steps: hydraulic presplitting roof cutting, blasting and the like, the hydraulic presplitting technology cannot accurately control the crack expansion direction, the traditional blasting is low in safety and efficiency, and secondary disasters are easy to cause.
The composite blasting technology realizes directional accurate seam making through mutual matching of perforating charges and gunpowder, the design of a charging tube string structure is a key for ensuring the seam making effect, special design is required according to special geological conditions to ensure the effect, but no unified charging tube string structure exists at present. Therefore, development of a charging tube string structure which can adapt to special geological conditions is needed to solve the charging difficulty of directional seam making of composite blasting, provide equipment support for directional blasting of coal mine and improve application effect.
Disclosure of Invention
The invention aims to provide a pipe string device which is suitable for controlling rock strata through composite blasting in a coal mine.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a composite blasting directional charging tube string device comprises a charging tube and an anti-slip tube cap; the charging tube is of a hollow cylindrical tubular structure, a plurality of groups of charging hole groups and a plurality of detonating cord clamping grooves are formed in the charging tube, and a pair of charging tubes are connected with the through holes; each group of charging hole groups comprises a charging hole opening hole and charging Kong Weikong, and the connecting line of the center of the charging hole opening hole and the center of the charging Kong Weikong is perpendicular to the axis of the charging tube; from top to bottomThe distance between the center line of the group of charging holes and the center line of the next group of charging holes is +.>Increasing with increasing distance from the top end of the charge tube; the detonating cord clamping grooves are grooves on the side of the explosive loading Kong Weikong, and each detonating cord clamping groove is connected with the center of the explosive loading Kong Weikong at the center of the opening hole perpendicular to the explosive loading holeThe projection of the tube axis section is rectangle, and the acute included angle between the length direction of the rectangle and the center line of the tube axis is +.>The method comprises the steps of carrying out a first treatment on the surface of the The charging tube connecting through hole is positioned at the top end of the charging tube; the anti-falling sliding pipe cap comprises a cylindrical pipe cap and an iron wire net, and is connected with the through hole; the cylindrical pipe cap and the wire netting are fixedly connected through self-tapping screws, and the anti-fall sliding pipe cap connecting through hole is positioned at the open end of the pipe cap.
The diameter of the opening hole of the charging hole and the diameter of the charging Kong Weikong are determined according to the opening diameter R of the perforating bullet which is assembled as required, and the diameter of the opening hole of the charging holeCharge Kong Weikong diameter->。
In the adjacent charging hole groups, the connecting lines from the circle centers of the opening holes of the charging holes to the circle centers of the charging Kong Weikong are parallel and opposite.
The outer diameter D of the charging tube 1 Length D of perforating charge assembled according to requirement 0 It is determined that the number of the cells,inner diameter of charging tube->。
The said processThe detonating cord for detonating the perforating bullet is spirally wound along the outer tube wall of the explosive loading tube to sequentially connect the detonation points at the tail part of the perforating bullet, and the size of the detonating cord clamping groove meets the criterion that the detonating cord can be just put in, and the detonating cord clamping groove limits the detonating cord at the explosive loading Kong Weikong.
The circle center of the opening hole of the charging hole of the first group of charging holes and the circle center of the charging Kong WeikongThe distance from the connecting line to the top end of the charging tube is less than 100mm, and the distance between the center line of the 1 st group of charging hole group and the center line of the 2 nd group of charging hole group is L 1 ，80mm<L 1 <100mm, the firstThe distance between the center line of the group of charging holes and the center line of the next group of charging holes is +.>，。
The charging pipe connecting through hole on the charging pipe is arranged in the range of 15 mm-25 mm away from the top end of the charging pipe; the anti-falling sliding pipe cap connecting through hole on the anti-falling sliding pipe cap is arranged within the range of 10 mm-20 mm away from the opening end of the cylindrical pipe cap, the outer diameter of the cylindrical pipe cap is the same as the inner diameter of the charging pipe, and the charging pipe and the anti-falling sliding pipe cap are connected through the charging pipe connecting through hole and the anti-falling sliding pipe cap connecting through hole in a bolt connection mode.
The wire netting is round, and the diameter of the wire netting is D 3 ，1.5 D 1 ＞D 3 ＞2D 1 。
In the anti-slip pipe cap, an umbrella shape is formed after the wire netting enters into a borehole of the underground composite blasting placement pipe string, the edge of the wire netting is tightly attached to the wall of the borehole, and an inclined pulling force is provided to prevent the pipe string device from slipping down.
Compared with the prior art, the invention has the beneficial effects that:
(1) The device is simple and portable, and is suitable for underground construction of coal mines;
(2) The distance between the charging holes on the charging pipe is increased along with the decrease of the distance from the surface of the roadway, the stress of the ground at different depths is fully considered, the closer to the surface of the roadway, the smaller the three-dimensional stress of surrounding rock is, the distance between the charging holes is related to the stress of the ground in the environment, and the applicability is improved;
(3) The anti-slip pipe cap is adopted, so that the problem that the pipe string is easy to slip backwards when the charging pipe is assembled underground is solved;
(4) The whole device has the advantages of simple structure, convenient use, convenient processing, low cost, wide applicability in underground coal mine rock stratum control and wide popularization and application prospect.
Drawings
FIG. 1 is a general schematic diagram of a composite blasting charge string of the present invention;
FIG. 2 is a schematic view of the structure of the anti-slip cap of the present invention;
FIG. 3 is a schematic diagram of the structure of a composite blasting charge tube string structure at a charge hole;
in the figure: 1-an anti-slip pipe cap; 2-detonating cord clamping grooves; 3-a charge tube; 4-connecting the charging pipe with the through hole; 5-opening the charging hole; 6-charge Kong Weikong; 7-self-tapping screws; 8-wire netting; 9-connecting the anti-falling sliding pipe cap with the through hole; 10-cylindrical cap.
Detailed Description
An embodiment of the invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, the composite blasting directional charge tube string device comprises a charge tube 3 and an anti-slip tube cap 1; the charging tube 3 is of a hollow cylindrical tubular structure, a plurality of groups of charging hole groups and a plurality of detonating cord clamping grooves 2 are formed in the charging tube 3, and a pair of charging tubes are connected with the through holes 4; as shown in fig. 2, the anti-slip pipe cap 1 comprises a cylindrical pipe cap 10, a wire netting 8 and an anti-slip pipe cap connecting through hole 9; as shown in fig. 3, each group of charging hole groups comprises a charging hole opening hole 5 and a charging Kong Weikong, and the connecting line of the circle center of the charging hole opening hole 5 and the circle center of the charging hole tail hole 6 is perpendicular to the axial lead of the charging tube 3;
the present embodiment employs an opening diameter r=40 mm, length D 0 Perforating bullet of 52mm, the diameter R of the opening hole 5 of the charge hole 0 =42 mm, diameter R of charge hole tail hole 6 1 =16mm, 3 outer diameter D of charge tube 1 =50mm; 3 inner diameter D of charge tube 2 =45mm；
In the adjacent charging hole groups, the connecting lines from the circle centers of the opening holes of the charging holes to the circle centers of the charging Kong Weikong are parallel to each other and have opposite directions. The first group of charging holes are provided with charging hole openingsThe distance from the connecting line of the circle center of the hole 5 and the circle center of the tail hole 6 of the charging hole to the top end of the charging 3) is 80mm, and the distance between the center line of the 1 st group of charging hole group and the center line of the 2 nd group of charging hole group is L 1 =90 mm, the firstThe distance between the center line of the group of charging holes and the center line of the next group of charging holes is +.>，/>；
The detonating cord clamping grooves 2 are grooves on the tail hole 6 side of the charging hole, the projection of each detonating cord clamping groove 2 on the tube shaft section perpendicular to the connecting line of the circle center of the opening hole 5 of the charging hole and the circle center of the tail hole 6 of the charging hole is rectangular, and the length direction of the rectangle forms an acute angle with the center line of the tube shaftThe detonating cord for detonating the perforating bullet is spirally wound along the outer tube wall of the explosive loading tube (3) to be sequentially connected with detonating points at the tail part of the perforating bullet, and the size of the detonating cord clamping groove 2 meets the condition that the detonating cord can be just put in, and the detonating cord clamping groove 2 limits the detonating cord at the tail hole 6 of the explosive loading hole;
the charging tube connecting through hole 4 is arranged at a position 20mm away from the top end of the charging tube 3, the anti-falling sliding tube cap connecting through hole 9 is arranged at a position 15mm away from the opening end of the cylindrical tube cap 10, the outer diameter of the cylindrical tube cap 10 is the same as the inner diameter of the charging tube 3, and the charging tube 3 and the anti-falling sliding tube cap 1 are connected through the charging tube connecting through hole 4 and the anti-falling sliding tube cap connecting through hole 9 in a bolt connection mode;
the wire 8 is circular and has a diameter D 3 The wire netting 8 is fixedly connected with the cylindrical pipe cap 10 by self-tapping screws 7;
the wire netting 8 forms the umbrella-shaped after entering the drilling of compound blasting placement pipe cluster in pit, and wire netting 8 edge and drilling pore wall closely laminate, provide the slope pulling force, prevent pipe cluster device gliding.
Claims (5)
1. A composite blasting directional charge tube string device is characterized in that: comprises a charging tube (3) and an anti-slip tube cap (1); the charging tube (3) is of a hollow cylindrical tubular structure, a plurality of groups of charging hole groups and a plurality of detonating cord clamping grooves (2) are formed in the charging tube (3), and a pair of charging tube connecting through holes (4); each group of charging hole groups comprises a charging hole opening hole (5) and a charging Kong Weikong (6), and the connecting line of the circle center of the charging hole opening hole (5) and the circle center of the charging Kong Weikong (6) is perpendicular to the axial lead of the charging pipe (3); the distance L between the center line of the ith group of charging holes and the center line of the next group of charging holes from top to bottom i Increases with increasing distance from the top end of the charging tube (3); the distance between the connecting line of the circle center of the charge hole opening hole (5) of the first group of charge hole groups and the circle center of the charge Kong Weikong (6) and the top end of the charge tube (3) is less than 100mm, and the distance between the center line of the 1 st group of charge hole groups and the center line of the 2 nd group of charge hole groups is L 1 ，80mm<L 1 <The distance between the center line of the k group of charging holes and the center line of the next group of charging holes is L, which is 100mm k ＝L 1 +10 x (k-1) mm, 2.ltoreq.k.ltoreq.i; the detonating cord clamping grooves (2) are grooves on the side of the explosive loading Kong Weikong (6), the projection of each detonating cord clamping groove (2) on the section of a tube shaft perpendicular to the connecting line of the center of an opening hole (5) of the explosive loading hole and the center of the explosive loading Kong Weikong (6) is rectangular, and the acute angle between the length direction of the rectangle and the center line of the tube shaft is theta i The method comprises the steps of carrying out a first treatment on the surface of the The charging tube connecting through hole (4) is positioned at the top end of the charging tube (3); outer diameter D of charging tube (3) 1 Length D of perforating charge assembled according to requirement 0 Determining D 1 ＝D 0 -2mm of the inner diameter D of the charge tube (3) 2 ＝D 1 -5mm；The detonating cord for detonating the perforating bullet is spirally wound along the outer tube wall of the explosive loading tube (3) to be sequentially connected with detonating points at the tail part of the perforating bullet, and the size of the detonating cord clamping groove (2) meets the criterion that the detonating cord can be just put in, and the detonating cord clamping groove (2) limits the detonating cord at the explosive loading Kong Weikong (6); the anti-falling sliding pipe cap (1) comprises a cylindrical pipe cap (10) and an iron wire net (8), and the anti-falling sliding pipe cap is connected with a through hole (9)The method comprises the steps of carrying out a first treatment on the surface of the The cylindrical pipe cap (10) is fixedly connected with the wire netting (8) through a self-tapping screw (7), and the anti-falling sliding pipe cap connecting through hole (9) is positioned at the open end of the pipe cap; the wire netting (8) forms the umbrella-shaped after entering the drilling of compound blasting placement tube cluster in pit, and wire netting (8) edge and drilling pore wall closely laminate, provide slope pulling force, prevent the gliding of tube cluster device.
2. The composite blast oriented charge string device of claim 1, wherein: the diameters of the charge hole opening holes (5) and the charge Kong Weikong (6) are determined according to the assembled perforating bullet opening diameter R, and the charge hole opening holes (5) diameter R 0 =r+2 mm, charge Kong Weikong (6) diameter
3. The composite blast oriented charge string device of claim 1, wherein: in the adjacent charging hole groups, the connecting lines from the circle centers of the opening holes of the charging holes to the circle centers of the charging Kong Weikong are parallel to each other and have opposite directions.
4. The composite blast oriented charge string device of claim 1, wherein: the charging tube connecting through hole (4) on the charging tube (3) is arranged in the range of 15 mm-25 mm from the top end of the charging tube (3); the anti-falling sliding pipe cap connecting through hole (9) on the anti-falling sliding pipe cap (1) is arranged in the range of 10 mm-20 mm away from the opening end of the cylindrical pipe cap (10), the outer diameter of the cylindrical pipe cap (10) is the same as the inner diameter of the charging pipe (3), and the charging pipe (3) and the anti-falling sliding pipe cap (1) are connected by adopting a bolt connection mode through the charging pipe connecting through hole (4) and the anti-falling sliding pipe cap connecting through hole (9).
5. The composite blast oriented charge string device of claim 4, wherein: the wire netting (8) is round, and the diameter of the wire netting is D 3 ，1.5D 1 ＞D 3 ＞2D 1 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110843340.0A CN113607000B (en) | 2021-07-26 | 2021-07-26 | Composite blasting directional charging tube string device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110843340.0A CN113607000B (en) | 2021-07-26 | 2021-07-26 | Composite blasting directional charging tube string device |
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| Publication Number | Publication Date |
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| CN113607000A CN113607000A (en) | 2021-11-05 |
| CN113607000B true CN113607000B (en) | 2023-08-15 |
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| CN202110843340.0A Active CN113607000B (en) | 2021-07-26 | 2021-07-26 | Composite blasting directional charging tube string device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201429387Y (en) * | 2009-06-23 | 2010-03-24 | 赵锡海 | Anti-floating cap of seismic charge |
| CN103924951A (en) * | 2014-03-25 | 2014-07-16 | 西安物华巨能爆破器材有限责任公司 | Perforator provided with built-in detonating cord extrusion-type bullet fixing component |
| CN204267063U (en) * | 2014-10-30 | 2015-04-15 | 安徽理工大学 | A kind of major part jet perforating tubular type grouted anchor bar with cage of reinforcement |
| CN106225614A (en) * | 2016-08-22 | 2016-12-14 | 叶建军 | Umbrella shape screens hanger and utilize the umbrella shape screens hanger method to blast hole projectile filling |
| CN108731554A (en) * | 2018-08-03 | 2018-11-02 | 惠州市兴鲁节能科技有限公司 | A kind of tunnel photoface exploision does not couple beehive-shaped charge device and loading method |
| CN112523729A (en) * | 2020-12-14 | 2021-03-19 | 山东北方民爆器材有限公司 | Deflagration self-adaptive perforation fluctuation fracturing synergistic system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6523449B2 (en) * | 2001-01-11 | 2003-02-25 | Schlumberger Technology Corporation | Perforating gun |
| US9845666B2 (en) * | 2014-02-08 | 2017-12-19 | Geodynamics, Inc. | Limited entry phased perforating gun system and method |
-
2021
- 2021-07-26 CN CN202110843340.0A patent/CN113607000B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201429387Y (en) * | 2009-06-23 | 2010-03-24 | 赵锡海 | Anti-floating cap of seismic charge |
| CN103924951A (en) * | 2014-03-25 | 2014-07-16 | 西安物华巨能爆破器材有限责任公司 | Perforator provided with built-in detonating cord extrusion-type bullet fixing component |
| CN204267063U (en) * | 2014-10-30 | 2015-04-15 | 安徽理工大学 | A kind of major part jet perforating tubular type grouted anchor bar with cage of reinforcement |
| CN106225614A (en) * | 2016-08-22 | 2016-12-14 | 叶建军 | Umbrella shape screens hanger and utilize the umbrella shape screens hanger method to blast hole projectile filling |
| CN108731554A (en) * | 2018-08-03 | 2018-11-02 | 惠州市兴鲁节能科技有限公司 | A kind of tunnel photoface exploision does not couple beehive-shaped charge device and loading method |
| CN112523729A (en) * | 2020-12-14 | 2021-03-19 | 山东北方民爆器材有限公司 | Deflagration self-adaptive perforation fluctuation fracturing synergistic system |
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| CN113607000A (en) | 2021-11-05 |
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