CN113607000A - Directional charge pipe cluster device of compound blasting - Google Patents
Directional charge pipe cluster device of compound blasting Download PDFInfo
- Publication number
- CN113607000A CN113607000A CN202110843340.0A CN202110843340A CN113607000A CN 113607000 A CN113607000 A CN 113607000A CN 202110843340 A CN202110843340 A CN 202110843340A CN 113607000 A CN113607000 A CN 113607000A
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- hole
- charging
- charge
- pipe
- tube
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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
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention relates to a directional explosive loading tube string device for composite blasting. A composite blasting directional charging tube string device comprises a charging tube and an anti-reverse sliding tube cap; the explosive charging pipe is of a hollow cylindrical tubular structure, a plurality of groups of explosive charging hole groups and a plurality of detonating cord clamping grooves are arranged on the explosive charging pipe, and a pair of explosive charging pipes are connected with through holes; each group of charging hole groups comprises a charging hole opening hole and a charging hole tail hole, and a connecting line of the circle center of the charging hole opening hole and the circle center of the charging hole tail hole is vertical to the axial lead of the charging pipe; from top to bottom
The distance between the central line of the assembled charge hole group and the central line of the next assembled charge hole group
Increasing with increasing distance from the top end of the loading tube. The composite blasting directional explosive loading pipe string device is simple and light, and is suitable for underground construction of coal mines.
Description
Technical Field
The invention relates to a directional explosive loading tube string device for composite blasting. The explosive loading pipe string structure is particularly suitable for directional blasting of coal rock layers by adopting a composite blasting method in the field of coal mines.
Background
In the field of coal mining, the control of a roof is always a key problem of coal mining, after coal seam mining, a hard roof is suspended in a goaf in a large area to cause frequent mine pressure display on a working face, and once the roof collapses suddenly, serious problems such as equipment damage, personal injury and the like can be caused. The current methods for strong mine pressure control of stopes affected by hard roofs are as follows: hydraulic presplitting, roof cutting, blasting and the like, the hydraulic presplitting technology cannot accurately control the crack propagation direction, the safety and the efficiency of the traditional blasting are low, and secondary disasters are easily caused.
The compound blasting technology realizes directional and accurate seam making through mutual matching of perforating bullets and gunpowder, the design of the loading tube string structure is the key for ensuring the seam making effect, and special design is needed to be carried out according to special geological conditions so as to ensure the effect, but no unified loading tube string structure exists at present. Therefore, it is urgently needed to develop a loading pipe string structure which can adapt to special geological conditions so as to solve the loading problem of directional seam making of composite blasting, provide equipment support for directional blasting of coal mines and improve application effect.
Disclosure of Invention
The invention aims to provide a pipe string device suitable for controlling a rock stratum through composite blasting under a coal mine.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a directional explosive loading tube string device for composite blasting comprisesA medicine loading tube and an anti-reverse sliding tube cap; the explosive charging pipe is of a hollow cylindrical tubular structure, a plurality of groups of explosive charging hole groups and a plurality of detonating cord clamping grooves are arranged on the explosive charging pipe, and a pair of explosive charging pipes are connected with through holes; each group of charging hole groups comprises a charging hole opening hole and a charging hole tail hole, and a connecting line of the circle center of the charging hole opening hole and the circle center of the charging hole tail hole is vertical to the axial lead of the charging pipe; from top to bottom
The distance between the central line of the assembled charge hole group and the central line of the next assembled charge hole group
Increases with the distance from the top end of the medicine filling pipe; the detonating cord clamping grooves are grooves on the side of the tail hole of the charging hole, the projection of each detonating cord clamping groove on the section of the tube shaft perpendicular to the connecting line of the circle center of the opening hole of the charging hole and the circle center of the tail hole of the charging hole is rectangular, and the acute angle included angle between the length direction of the rectangle and the central line of the tube shaft is
(ii) a The medicine filling pipe connecting through hole is positioned at the top end of the medicine filling pipe; the anti-reverse-slip pipe cap comprises a cylindrical pipe cap and a wire mesh, 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-backward-sliding pipe cap connecting through hole is positioned at the opening end of the pipe cap.
The diameters of the opening hole of the charge hole and the tail hole of the charge hole are determined according to the opening diameter R of the perforating bullet to be assembled, and the diameter of the opening hole of the charge hole
Diameter of the tail hole of the loading hole
。
In the adjacent charging hole groups, connecting lines from the center of an opening hole of the charging hole to the center of a tail hole of the charging hole are parallel to each other and opposite in direction.
The outer diameter D of the charging tube1Length of perforating charge to be assembled according to needDegree D0It is determined that,
inner diameter of charging tube
。
Said
The detonating cord for detonating the perforating bullet is spirally wound along the outer pipe wall of the charge pipe and is sequentially connected with the detonating point at the tail part of the perforating bullet, the size of the detonating cord clamping groove meets the requirement that the detonating cord can be just put in, and the detonating cord clamping groove limits the detonating cord at the tail hole of the charge hole.
The distance from the connection line of the circle center of the opening hole of the loading hole of the first group loading hole group and the circle center of the tail hole of the loading hole to the top end of the loading tube is less than 100mm, and the distance between the central line of the 1 st group loading hole group and the central line of the 2 nd group loading hole group is L1，80mm<L1<100mm, first
The distance between the central line of the assembled charge hole group and the central line of the next assembled charge hole group is
，
。
The connecting through hole of the charging tube on the charging tube is arranged in the range of 15 mm-25 mm away from the top end of the charging tube; the anti-reverse-slip pipe cap connecting through hole on the anti-reverse-slip pipe cap is arranged in a 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-reverse-slip pipe cap are connected through the charging pipe connecting through hole and the anti-reverse-slip pipe cap connecting through hole in a bolt connection mode.
The wire netting is circular and has a diameter D3，1.5 D1＞D3＞2D1。
In the anti-reverse-slip pipe cap, the wire netting enters a drill hole for placing the pipe string in the underground composite blasting mode to form an umbrella shape, the edge of the wire netting is tightly attached to the hole wall of the drill hole to provide inclined pulling force, and the pipe string device is prevented from sliding downwards.
Compared with the prior art, the invention has the beneficial effects that:
(1) the composite blasting directional explosive loading pipe string device is simple and light, and is suitable for underground construction of a coal mine;
(2) the distance between the explosive loading holes on the explosive loading pipe is increased along with the reduction of the distance from the surface of the roadway, the different magnitude of the ground stress at different depths is fully considered, the closer to the surface of the roadway, the smaller the three-way stress of the surrounding rock is, the more the distance between the explosive loading holes and the magnitude of the ground stress of the environment is associated, and the applicability is higher;
(3) the anti-slip pipe cap is adopted, so that the problem that the pipe string is easy to slip when the charging pipe is assembled underground is solved;
(4) the whole device is simple in structure, convenient to use, convenient to process and low in cost, has wide applicability in controlling rock strata in a coal mine, and has wide popularization and application prospects.
Drawings
FIG. 1 is a general schematic diagram of the composite blasting charge string structure of the present invention;
FIG. 2 is a schematic structural view of the anti-backsliding tube cap of the present invention;
FIG. 3 is a schematic structural diagram of a charge hole of a composite blasting charge tube string structure according to the invention;
in the figure: 1-anti-back-slip pipe cap; 2-detonating cord clamping groove; 3-a medicine filling pipe; 4, connecting the medicine filling pipe with the through hole; 5-opening the medicine loading hole; 6-tail hole of the medicine loading hole; 7-self-tapping screw; 8-wire netting; 9-the anti-reverse sliding pipe cap is connected 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 directional loading tube string device for composite blasting of the invention comprises a loading tube 3 and an anti-slip tube cap 1; the explosive charging pipe 3 is of a hollow cylindrical tubular structure, a plurality of groups of explosive charging hole groups, a plurality of detonating cord clamping grooves 2 and a pair of explosive charging pipe connecting through holes 4 are arranged on the explosive charging pipe 3; as shown in fig. 2, the anti-slipping pipe cap 1 comprises a cylindrical pipe cap 10, a wire netting 8 and an anti-slipping pipe cap connecting through hole 9; as shown in fig. 3, each charge hole group comprises a charge hole opening hole 5 and a charge hole tail hole 6, and a connecting line of the circle center of the charge hole opening hole 5 and the circle center of the charge hole tail hole 6 is vertical to the axial lead of the charge pipe 3;
in this embodiment, the opening diameter R is 40mm and the length D is adopted0If the diameter of the charge hole opening 5 is not less than 52mm, the diameter R of the charge hole opening is not less than 5mm0=42mm, diameter R of tail hole 6 of medicine filling hole1=16mm, 3 outer diameter D of charging tube1=50 mm; 3 inner diameter D of charging tube2=45mm；
In the adjacent charging hole groups, connecting lines from the center of the opening hole of the charging hole to the center of the tail hole of the charging hole are parallel to each other and opposite in direction. The distance from 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 of the first group of charging holes to the top end of the charging hole 3) is 80mm, and the distance between the central line of the 1 st group of charging holes and the central line of the 2 nd group of charging holes is L1=90mm, second
The distance between the central line of the assembled charge hole group and the central line of the next assembled charge hole group is
，
；
The detonating cord clamping grooves 2 are grooves on the side of the loading hole tail hole 6, the projection of each detonating cord clamping groove 2 on the section of the tube shaft perpendicular to the connecting line of the circle center of the loading hole opening hole 5 and the circle center of the loading hole tail hole 6 is a rectangle, and the length direction of the rectangle forms an acute angle with the central line of the tube shaft
The detonating cord for detonating the perforating bullet is spirally wound along the outer pipe wall of the explosive loading pipe (3) and is sequentially connected with the detonating point at the tail part of the perforating bullet, and the size of the detonating cord clamping groove 2 meets the requirement that the detonating cord can just be put intoThe detonating cord clamping groove 2 limits the detonating cord at the tail hole 6 of the explosive loading hole;
the charge tube connecting through hole 4 is arranged 20mm away from the top end of the charge tube 3, the anti-reverse sliding tube cap connecting through hole 9 is arranged 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 charge tube 3, and the charge tube 3 and the anti-reverse sliding tube cap 1 are connected through the charge tube connecting through hole 4 and the anti-reverse sliding tube cap connecting through hole 9 in a bolt connection mode;
the wire 8 is circular and has a diameter D3=80mm, the wire netting 8 and the cylindrical pipe cap 10 are fixedly connected through a self-tapping screw 7;
the wire netting 8 forms the umbelliform after getting into the drilling that the pipe cluster was placed in the compound blasting in pit, and 8 edges of wire netting and the tight laminating of drilling pore wall provide the slope pulling force, prevent the gliding of pipe cluster device.
Claims (9)
1. The utility model provides a directional charge pipe cluster device of compound blasting which characterized in that: comprises a medicine loading tube (3) and an anti-reverse-sliding tube cap (1); the explosive charging pipe (3) is of a hollow cylindrical tubular structure, a plurality of groups of explosive charging hole groups, a plurality of detonating cord clamping grooves (2) and a pair of explosive charging pipe connecting through holes (4) are formed in the explosive charging pipe (3); each group of charge hole groups comprises a charge hole opening hole (5) and a charge hole tail hole (6), and a connecting line of the circle center of the charge hole opening hole (5) and the circle center of the charge hole tail hole (6) is vertical to the axial lead of the charge pipe (3); from top to bottom
The distance between the central line of the assembled charge hole group and the central line of the next assembled charge hole group
Increases with the distance from the top end of the medicine loading tube (3); the detonating cord clamping grooves (2) are grooves on the side of the loading hole tail hole (6), the projection of each detonating cord clamping groove (2) on the section of the tube shaft perpendicular to the connection line of the circle center of the loading hole opening hole (5) and the circle center of the loading hole tail hole (6) is rectangular, and the acute angle included angle between the length direction of the rectangle and the center line of the tube shaft is
(ii) a The medicine filling pipe connecting through hole (4) is positioned at the top end of the medicine filling pipe (3); the anti-backward-sliding pipe cap (1) comprises a cylindrical pipe cap (10) and an iron wire net (8), and the anti-backward-sliding pipe cap is connected with a through hole (9); the cylindrical pipe cap (10) is fixedly connected with the wire netting (8) through self-tapping screws (7), and the anti-slipping pipe cap connecting through hole (9) is positioned at the opening end of the pipe cap.
2. The composite blasting directional charge string device according to claim 1, characterized in that: the diameters of the opening hole (5) and the tail hole (6) of the charge hole are determined according to the opening diameter R of the assembled perforating charge, and the diameter of the opening hole (5) of the charge hole
Diameter of tail hole (6) of medicine loading hole
。
3. The composite blasting directional charge string device according to claim 1, characterized in that: in the adjacent charging hole groups, connecting lines from the center of the opening hole of the charging hole to the center of the tail hole of the charging hole are parallel to each other and opposite in direction.
4. The composite blasting directional charge string device according to claim 1, characterized in that: the outer diameter D of the medicine loading tube (3)1Length D of perforating charge to be assembled0It is determined that,
inner diameter of the medicine loading tube (3)
。
5. According to the rightThe directional explosive loading tube string device for composite blasting according to claim 4, which is characterized in that:
the detonating cord for detonating the perforating bullet is spirally wound along the outer pipe wall of the charging pipe (3) and sequentially connected with the detonating point at the tail part of the perforating bullet, the size of the detonating cord clamping groove (2) meets the requirement that the detonating cord can be just put into the explosive loading pipe, and the detonating cord clamping groove (2) limits the detonating cord at the tail hole (6) of the charging hole.
6. The composite blasting directional charge string device according to claim 1, characterized in that: the distance from 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 of the first group of charging holes to the top end of the charging pipe (3) is less than 100mm, and the distance between the central line of the 1 st group of charging holes and the central line of the 2 nd group of charging holes is L1，80mm<L1<100mm, first
The distance between the central line of the assembled charge hole group and the central line of the next assembled charge hole group is
，
。
7. The composite blasting directional charge string device of claim 6, wherein: the charge tube connecting through hole (4) on the charge tube (3) is arranged in the range of 15 mm-25 mm away from the top end of the charge tube (3); the anti-reverse-slip pipe cap connecting through hole (9) on the anti-reverse-slip pipe cap (1) is arranged in a 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-reverse-slip pipe cap (1) are connected through the charging pipe connecting through hole (4) and the anti-reverse-slip pipe cap connecting through hole (9) in a bolt connection mode.
8. The composite blasting directional charge string device according to claim 4, wherein: the wire netting (8) is circular and has a diameter D3，1.5 D1＞D3＞2D1。
9. The composite blasting directional charge string device according to claim 1, characterized in that: in the anti-reverse-slip pipe cap (1), the wire netting (8) enters a drill hole for placing the pipe string in the underground composite blasting mode to form an umbrella shape, the edge of the wire netting (8) is tightly attached to the wall of the drill hole to provide oblique pulling force, and the pipe string device is prevented from sliding downwards.
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 |
Applications Claiming Priority (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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| CN113607000A true CN113607000A (en) | 2021-11-05 |
| CN113607000B 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 (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020088338A1 (en) * | 2001-01-11 | 2002-07-11 | Alfredo Fayard | Perforating gun |
| 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 |
| US20150267516A1 (en) * | 2014-02-08 | 2015-09-24 | Geodynamics, Inc. | Limited Entry Phased Perforating Gun System and Method |
| 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 |
-
2021
- 2021-07-26 CN CN202110843340.0A patent/CN113607000B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020088338A1 (en) * | 2001-01-11 | 2002-07-11 | Alfredo Fayard | Perforating gun |
| CN201429387Y (en) * | 2009-06-23 | 2010-03-24 | 赵锡海 | Anti-floating cap of seismic charge |
| US20150267516A1 (en) * | 2014-02-08 | 2015-09-24 | Geodynamics, Inc. | Limited Entry Phased Perforating Gun System and Method |
| 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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| CN113607000B (en) | 2023-08-15 |
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