CN217210604U - Combined tool for charging horizontal hole in underground mine broken rock mass - Google Patents
Combined tool for charging horizontal hole in underground mine broken rock mass Download PDFInfo
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- CN217210604U CN217210604U CN202220912910.7U CN202220912910U CN217210604U CN 217210604 U CN217210604 U CN 217210604U CN 202220912910 U CN202220912910 U CN 202220912910U CN 217210604 U CN217210604 U CN 217210604U
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- protecting sleeve
- powder charge
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Abstract
The utility model discloses a combined tool for charging a horizontal hole in an underground mine broken rock mass, which is formed by matching and combining a hole-protecting sleeve (3), a pipe cap (4) and a gun rod (8); the pipe body of the hole-protecting sleeve (3) is cut open along the length and an opening is reserved, and the inner diameter of the pipe cap (4) is matched with the inner diameter of the pipe body of the hole-protecting sleeve (3); the length of the gun rod (8) is greater than that of the hole-protecting sleeve (3), and the outer diameter of the gun rod (8) is smaller than the inner diameter of the hole-protecting sleeve (3). The utility model discloses can maintain the integrality of big gun hole at the powder charge in-process, prevent that the hole that collapses from appearing in the powder charge in-process, ensure that downthehole powder charge length accords with the designing requirement with the powder charge degree of depth, when improving the big gun hole utilization ratio, increase blasting circulation footage, reduce civilian explosive article unit consumption, and then reach reduction in production cost's purpose, ensure mine production safety.
Description
Technical Field
The utility model belongs to the technical field of big gun hole powder charge, concretely relates to a charging instrument for underground mine horizontal hole is particularly suitable for using in the horizontal hole powder charge of the broken rock mass in underground mine, also can popularize and apply in underground space blasting tunnelling engineering such as diversion tunnel, highway tunnel, railway tunnel.
Background
Blasting technique has obtained the wide application in rock mass excavation engineering, guarantees the pore forming rate of big gun hole and helps the increase of circulation footage, nevertheless under the more broken condition of rock mass, because adopt the big gun rod to send the medicine in the big gun hole many times, thereby causes the disturbance to the big gun hole wall and form the hole of collapsing, hardly clears up the stone in the big gun hole this moment, especially carries out the big gun hole and clears up the operation under the condition of having been equipped with the cartridge and be very dangerous. Under the condition of hole collapse, if the explosive is continuously charged, blind guns and even misfires are easily generated, so that the cyclic footage is influenced, and potential safety hazards are brought to the post-explosion treatment. Therefore, how to ensure continuous charging in the blast hole and ensure enough charging length is very important for achieving the expected blasting effect and safe operation.
Disclosure of Invention
In order to carry out the powder charge according to blasting design parameter in broken rock mass, avoid the powder charge in-process hole that collapses to appear, ensure sufficient powder charge length, make blasting effect reach anticipated target, the utility model provides a combination tool for horizontal hole powder charge in the broken rock mass of underground mine.
In order to realize the purpose of the utility model, the utility model relates to a combined tool for charging the horizontal hole in the underground mine crushed rock mass, which is formed by matching and combining a hole-protecting sleeve, a pipe cap and a gun stick; the pipe body of the hole-protecting sleeve is cut open in length and provided with an opening, and the inner diameter of the pipe cap is matched with that of the hole-protecting sleeve; the length of the gun rod is greater than that of the hole protecting sleeve, and the outer diameter of the gun rod is smaller than the inner diameter of the hole protecting sleeve.
The method is designed according to blasting parameters of a horizontal hole in an underground mine broken rock body, namely the depth and the aperture of the blast hole, the length of the hole protecting sleeve is generally 2.2-2.6 m, the outer diameter of the pipe is 38-42 mm, the thickness of the pipe wall is 1.8-2.2 mm, and the opening width of the pipe body is preferably 21-25 mm.
When the combined tool is used, the pipe cap is sleeved at the front end of the hole protecting sleeve, so that collapsed stones can be prevented from entering the hole protecting sleeve in the process of inserting the hole protecting sleeve into a blast hole; the diameter of the gun rod is 18-25 mm, and the length of the gun rod is 0.1-0.3 m larger than that of the hole-protecting sleeve.
The utility model is used for the combination tool of horizontal hole powder charge in the broken rock mass of underground mine adopts following operation step when using:
1) carrying out blasting parameter design according to the geological conditions of the rocks on the working face, and carrying out rock drilling and perforating operation according to the design parameters;
2) after the perforation depth reaches the designed blast hole depth, the drill rod is slowly drawn out, and hole collapse caused by disturbance of the hole wall of the blast hole in the process of drawing out the drill rod is avoided;
3) after the drill rod is drawn out, a hole protecting sleeve prepared in advance is slowly inserted into the blast hole until the bottom of the hole is reached; before the hole protecting sleeve is inserted into the blast hole, a pipe cap is sleeved at the front end of the hole protecting sleeve, so that collapsed stones can be prevented from entering the hole protecting sleeve in the process of inserting the hole protecting sleeve into the blast hole;
4) under the protection of the hole protecting sleeve, charging the blast hole, and loading the explosive roll into the blast hole from bottom to top;
5) after the blast hole reaches the designed charge amount, the explosive roll is propped by a gun rod, the hole-protecting sleeve is slowly drawn out, and the hole-protecting sleeve is recycled;
6) after the hole-protecting sleeve is completely drawn out, taking out the gun rod, and using the stemming to block the gun hole;
7) and (5) after the charging of all blast holes is finished, detonating according to a design scheme.
The utility model is used for behind the combination tool of horizontal hole powder charge in the broken rock mass of underground mine adopted above technical scheme, had following positive effect:
(1) experimental research shows, adopts the utility model discloses the powder charge of combination tool can maintain the integrality of big gun hole at the powder charge in-process of the horizontal hole in broken rock mass, prevents that the hole that collapses from appearing in the powder charge in-process, ensures that downthehole powder charge length accords with the designing requirement with the powder charge degree of depth, has ensured mine production safety.
(2) Adopt the utility model discloses the combination tool powder charge when improving the big gun hole utilization ratio, increases blasting circulation footage, reduces civilian explosive article unit consumption, and then reaches reduction in production cost purpose.
(3) The hole-protecting sleeve and the gun stick of the combined tool of the utility model can be recycled, thereby greatly reducing the use cost.
Drawings
FIG. 1 is a schematic front view of a charging structure of the combined tool for charging a horizontal hole in a broken rock body of an underground mine;
FIG. 2 is an enlarged view of a portion of FIG. 1 at position A;
FIG. 3 is a schematic plan view of the charging structure of the combined tool for charging a horizontal hole in a fractured rock mass of an underground mine;
FIG. 4 is a schematic front view of a tube cap according to the present invention;
fig. 5 is a schematic view of a hole-protecting sleeve adopted by the present invention.
The reference signs are: 1-rock; 2-blast hole; 3-hole protecting sleeve; 4-pipe cap; 5-medicated roll; 6-millisecond nonel detonators; 7-stemming; 8-gun rod.
Detailed Description
For describing better the utility model discloses, it is right below to combine the figure the utility model discloses a combination tool for horizontal hole powder charge in the broken rock mass of underground mine does further detailed description.
The front view schematic diagram of the charging structure of the combined tool for charging the horizontal hole in the underground mine broken rock body shown in figure 1 is combined with figures 2, 3, 4 and 5, and the combined tool for charging the horizontal hole in the underground mine broken rock body is formed by matching and combining a hole-protecting sleeve 3, a pipe cap 4 and a gun rod 8; the pipe body of the hole-protecting sleeve 3 is cut open along the length and provided with an opening, and the inner diameter of the pipe cap 4 is matched with the inner diameter of the pipe body of the hole-protecting sleeve 3; the length of the gun stick 8 is larger than that of the hole-protecting sleeve 3, and the outer diameter of the gun stick 8 is smaller than the inner diameter of the hole-protecting sleeve 3.
In the embodiment, the diameter of the blast hole 2 is 45mm, the depth of the blast hole 2 is 2.3m, the diameter of the cartridge 5 is 32mm, the length of the cartridge 5 is 31cm, each dose is 300g, the loading capacity of the blast hole is 1200g (4 cartridges), and the cartridge 5 is an emulsified cartridge; the length of the hole-protecting sleeve 3 is 2.4m, the outer diameter of the pipe is 40mm, the thickness of the pipe wall is 2mm, and the opening width of the pipe body is 23 mm; the diameter of the gun stick 8 is 20mm, and the length is 2.5 m; the pipe cap 4 has an inner diameter of 40mm, an outer diameter of 43mm and a thickness of 1.5 mm.
The utility model is used for the combination tool of horizontal hole powder charge in the broken rock mass of underground mine is adopting following step operation:
1) carrying out blasting parameter design according to the geological conditions of the rock 1 on the working face, and carrying out rock drilling and perforating operation according to the design parameters;
2) after the perforation depth reaches the designed depth of the blast hole 2, slowly drawing out the drill rod to avoid hole collapse caused by disturbing the hole wall of the blast hole 2 in the process of drawing out the drill rod;
3) after the drill rod is drawn out, a hole protecting sleeve 3 prepared in advance is slowly inserted into the blast hole 2 until the bottom of the hole; before the hole-protecting sleeve 3 is inserted into the blast hole 2, the pipe cap 4 is sleeved at the front end of the hole-protecting sleeve 3, so that collapsed stones can be prevented from entering the hole-protecting sleeve 3 in the process of inserting the hole-protecting sleeve 3 into the blast hole 2;
4) under the protection of the hole-protecting sleeve 3, charging the blast hole 2, loading a cartridge 5 into the blast hole 2 from bottom to top, and inserting or binding a detonating tube detonator 6 on the cartridge 5 at the lowest part in the blast hole 2;
5) after the blast hole 2 reaches the designed charge amount, the gun stick 8 is used for propping against the explosive roll 5, and the hole-protecting sleeve 3 is slowly drawn out;
6) after the hole-protecting sleeve 3 is completely drawn out, the gun rod 8 is taken out, and the gun hole 1 is plugged by the stemming 7;
7) and (5) after the charging of all the blast holes 1 is finished, detonating according to a design scheme.
The utility model discloses not only be fit for using in the horizontal hole powder charge in the broken rock mass of underground mine, underground space blasting tunnelling engineering such as diversion tunnel, highway tunnel, railway tunnel that the broken pore-forming of rock mass ratio is difficult is applicable equally.
Claims (3)
1. The utility model provides a combination tool that is arranged in broken rock mass horizontal hole powder charge of underground mine which characterized in that: is formed by matching and combining a hole-protecting sleeve (3), a pipe cap (4) and a gun stick (8); the pipe body of the hole-protecting sleeve (3) is cut open along the length and provided with an opening, and the inner diameter of the pipe cap (4) is matched with the inner diameter of the pipe body of the hole-protecting sleeve (3); the length of the gun rod (8) is greater than that of the hole-protecting sleeve (3), and the outer diameter of the gun rod (8) is smaller than the inner diameter of the hole-protecting sleeve (3).
2. A combination tool for horizontal bore charging of fractured rock mass of an underground mine according to claim 1 wherein: the hole-protecting sleeve (3) is 2.2-2.6 m long, 38-42 mm in outer diameter, 1.8-2.2 mm in thickness of the pipe wall, and 21-25 mm in width of the opening of the pipe body.
3. A combination tool for horizontal bore charging of fractured rock mass of an underground mine according to claim 1 wherein: when the combined tool is used, the pipe cap (4) is sleeved at the front end of the hole protecting sleeve (3); the diameter of the gun rod (8) is 18-25 mm, and the length of the gun rod (8) is 0.1-0.3 m larger than that of the hole-protecting sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220912910.7U CN217210604U (en) | 2022-04-14 | 2022-04-14 | Combined tool for charging horizontal hole in underground mine broken rock mass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220912910.7U CN217210604U (en) | 2022-04-14 | 2022-04-14 | Combined tool for charging horizontal hole in underground mine broken rock mass |
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| Publication Number | Publication Date |
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| CN217210604U true CN217210604U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220912910.7U Active CN217210604U (en) | 2022-04-14 | 2022-04-14 | Combined tool for charging horizontal hole in underground mine broken rock mass |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023197391A1 (en) * | 2022-04-14 | 2023-10-19 | 中钢集团马鞍山矿山研究总院股份有限公司 | Cartridge loading method for horizontal hole in broken rock of underground mine |
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2022
- 2022-04-14 CN CN202220912910.7U patent/CN217210604U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023197391A1 (en) * | 2022-04-14 | 2023-10-19 | 中钢集团马鞍山矿山研究总院股份有限公司 | Cartridge loading method for horizontal hole in broken rock of underground mine |
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