CN213841919U - Blasting structure for blasting and recycling of rock drilling chamber edge ores - Google Patents
Blasting structure for blasting and recycling of rock drilling chamber edge ores Download PDFInfo
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- CN213841919U CN213841919U CN202023071484.9U CN202023071484U CN213841919U CN 213841919 U CN213841919 U CN 213841919U CN 202023071484 U CN202023071484 U CN 202023071484U CN 213841919 U CN213841919 U CN 213841919U
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Abstract
The utility model discloses a blasting structure for rock drilling chamber edge ore blasting is retrieved, including a plurality of explosive fuse, the explosive fuse is located each big gun hole respectively and extends outside the big gun hole, and the explosive fuse in adjacent big gun hole is established ties each other, and the explosive fuse that is located the big gun hole establishes ties detonating explosive and anfo explosive in proper order; the detonating explosive is fixed in the blast hole by the blast card, the detonating explosive is provided with a detonator, the detonator is provided with a detonator leg wire, and the detonator leg wire extends out of the blast hole and is connected with the instantaneous detonator. By adopting the blasting structure of the structure, inner tube leg wires in the initiating explosive are bundled together with the instantaneous inner tube after being gathered together, and are simultaneously detonated by the instantaneous detonator; the upper blast hole and the lower blast hole are simultaneously blasted and dropped, and the ores are shoveled and loaded on the same operation surface, so that the mine enhanced mining is facilitated; this structure can effectively reduce the detonation time delay, avoids the detonation back rock to splash from top to bottom and destroys the detonation network.
Description
Technical Field
The utility model relates to an exploitation field in the pit, concretely relates to blasting structure that is used for rock drilling chamber edge ore blasting to retrieve.
Background
In the mining process of mines, mine enterprises adopt a large-diameter deep hole mining method such as a VCR (videocassette recorder) method and the like to occupy the mainstream in ore mining at home and abroad, because ore bodies are buried deeply underground, geological prospecting cannot accurately circle out ore body wiring all the time, a large-diameter deep hole drilling chamber is formed, but a small amount of ore bodies with different thicknesses still exist on a top plate of the drilling chamber, and if the ore amount on the upper part of the drilling chamber needs to be continuously recovered, a great construction problem exists.
Aiming at the problems, the safe, reliable, economical and reasonable edge ore recovery method in the large-diameter deep hole mining process is provided, and in order to ensure the implementation of the method, the original explosion structure must be improved, so that the total delay time is reduced, and the phenomenon that the rock splashes up and down to damage the detonation network after detonation is avoided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the explosion is prolonged, the back rock of detonating splashes from top to bottom, provides a blasting structure for rock drilling chamber edge ore blasting is retrieved.
The utility model adopts the technical proposal that: the blasting structure for blasting and recycling the ores at the edge of the rock drilling chamber comprises a plurality of detonating cords, wherein the detonating cords are respectively positioned in each blast hole and extend out of the blast holes, the detonating cords in adjacent blast holes are mutually connected in series, and the detonating explosive and the ammonium nitrate fuel oil explosive are sequentially connected in series in the blast holes; the detonating explosive is fixed in the blast hole by the blast card, the detonating explosive is provided with a detonator, the detonator is provided with a detonator leg wire, and the detonator leg wire extends out of the blast hole and is connected with the instantaneous detonator.
As a further improvement of the utility model, the big gun hole is furnished with the stemming, the stemming is located big gun card front end.
As a further improvement of the present invention, the primary explosive is provided with at least two detonators.
The utility model discloses a beneficial effect be: by adopting the blasting structure of the structure, the detonator leg wires in the initiating explosive are bundled together with the instantaneous detonator and are detonated by the instantaneous detonator at the same time; the upper blast hole and the lower blast hole are simultaneously blasted and dropped, and the ores are shoveled and loaded on the same operation surface, so that the mine enhanced mining is facilitated; this structure can effectively reduce the detonation time delay, avoids the detonation back rock to splash from top to bottom and destroys the detonation network.
Drawings
Fig. 1 is a schematic view of the present invention.
Shown in the figure: 1 detonating cord, 2 prompt detonators, 3 detonating explosive, 4 ammonium nitrate fuel oil explosive, 5 blast clamps, 6 detonators, 7 detonator foot lines and 8 stemming.
Detailed Description
The present invention will be further described with reference to fig. 1.
As shown in fig. 1, the blasting structure for blasting and recovering ores at the edge of a drilling chamber comprises a plurality of detonating cords 1, wherein the detonating cords 1 are respectively positioned in each blast hole and extend out of the blast hole, the detonating cords 1 in adjacent blast holes are mutually connected in series, and the detonating cords positioned in the blast holes are sequentially connected in series with a detonating explosive 3 and an ammonium nitrate fuel oil explosive 4; the primary explosive 3 is fixed in the blast hole through a blast clamp 5, the primary explosive is provided with a detonator 6, the detonator is provided with a detonator leg wire 7, and the detonator leg wire 7 extends out of the blast hole and is connected with the instant detonator 2.
The detonating explosive and the ammonium nitrate fuel oil explosive are positioned in the blast holes and are connected in series through detonating cords, the detonating explosive is provided with a detonator, and the detonator foot line of the detonator extends out of each blast hole and is bound and fixed by an instantaneous detonator. The detonating explosive is fixed in the blast hole by the blast card and is blocked by the stemming.
In order to effectively reduce the potential safety hazard of blasting and improve the accuracy of blasting control, the initiating explosive is provided with at least two detonators, and the use of the whole detonators is not more than five sections.
During construction, firstly, after high-grade ores exist on the upper part and the upper wall of the drilling chamber, an upward medium-length hole is constructed, and after the downward blast hole is constructed, rock debris generated by constructing the upward blast hole is prevented from accumulating and blocking the downward blast hole; the corresponding relation of the upper blast hole and the lower blast hole is required to be well corresponded to each time of blasting design, and the upper blast hole and the lower blast hole cannot be advanced or delayed after blasting; in the process of charging the blast holes upwards and downwards simultaneously, each blast hole uses an explosive fuse, 2 detonators with the same section position are bound in an orifice initiating explosive package, the use of the whole detonators does not exceed 5 section positions, the total delay is reduced, and the rock splashes up and down after initiation to damage an initiation network; the hole opening of the downward blast hole needs to be checked and plugged carefully before each blasting, after the upward blast hole and the downward blast hole are detonated simultaneously, upward ore is slightly accumulated in the rock drilling chamber, after the blasting, a scraper needs to be used for pushing the ore into a dead zone in the rock drilling chamber, and field personnel command the dead zone to avoid the phenomenon that the hole opening plug of the downward blast hole is shoveled to cause hole plugging.
By adopting the blasting structure of the structure, the detonator leg wires in the initiating explosive are bundled together with the instantaneous detonator and are detonated by the instantaneous detonator at the same time; the upper blast hole and the lower blast hole are simultaneously blasted and dropped, and the ores are shoveled and loaded on the same operation surface, so that the mine enhanced mining is facilitated; this structure can effectively reduce the detonation time delay, avoids the detonation back rock to splash from top to bottom and destroys the detonation network.
It should be known to those skilled in the art that the protection scheme of the present invention is not limited to the above-mentioned embodiments, and various permutations, combinations and transformations can be performed on the basis of the above-mentioned embodiments, without violating the spirit of the present invention, all the transformations performed by the present invention fall within the protection scope of the present invention.
Claims (3)
1. The blasting structure for blasting and recycling the ores at the edge of the rock drilling chamber is characterized by comprising a plurality of detonating cords (1), wherein the detonating cords (1) are respectively positioned in each blast hole and extend out of the blast holes, the detonating cords (1) in adjacent blast holes are mutually connected in series, and the detonating cords positioned in the blast holes are sequentially connected in series with a detonating explosive (3) and an ammonium nitrate fuel oil explosive (4); the detonating explosive (3) is fixed in the blast hole through a blast clip (5), the detonating explosive is provided with a detonator (6), the detonator is provided with a detonator foot line (7), and the detonator foot line (7) extends out of the blast hole and is connected with the instantaneous detonator (2).
2. The blasting structure for blasting recovery of rock drilling chamber edge ore according to claim 1, characterized in that the blasthole is provided with a stemming (8) located at the front end of the shot wad.
3. The blasting structure for rock drilling chamber edge ore blasting recovery as claimed in claim 1 or 2, wherein the initiating explosive is provided with at least two detonators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023071484.9U CN213841919U (en) | 2020-12-18 | 2020-12-18 | Blasting structure for blasting and recycling of rock drilling chamber edge ores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023071484.9U CN213841919U (en) | 2020-12-18 | 2020-12-18 | Blasting structure for blasting and recycling of rock drilling chamber edge ores |
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| CN213841919U true CN213841919U (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023071484.9U Active CN213841919U (en) | 2020-12-18 | 2020-12-18 | Blasting structure for blasting and recycling of rock drilling chamber edge ores |
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| CN (1) | CN213841919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865452A (en) * | 2021-09-13 | 2021-12-31 | 紫金矿业集团股份有限公司 | Controllable, safe and efficient dredging method for high-position clamping bucket of draw shaft |
-
2020
- 2020-12-18 CN CN202023071484.9U patent/CN213841919U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865452A (en) * | 2021-09-13 | 2021-12-31 | 紫金矿业集团股份有限公司 | Controllable, safe and efficient dredging method for high-position clamping bucket of draw shaft |
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