CN210464241U - Coal mine deep hole presplitting blasting powder feeding pipe withdrawing device - Google Patents
Coal mine deep hole presplitting blasting powder feeding pipe withdrawing device Download PDFInfo
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- CN210464241U CN210464241U CN201921134952.7U CN201921134952U CN210464241U CN 210464241 U CN210464241 U CN 210464241U CN 201921134952 U CN201921134952 U CN 201921134952U CN 210464241 U CN210464241 U CN 210464241U
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- pipe
- blasting
- hole
- explosive
- fitting joint
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Abstract
The utility model relates to the technical field of deep blasting of coal mines, and discloses a coal mine deep hole presplitting blasting powder feeding pipe withdrawing device, which comprises a blasting hole arranged in a coal body, wherein the withdrawing device is arranged in the blasting hole and comprises a powder charging pipe, a pipe fitting joint, a clay gun pipe and a powder feeding pipe which are arranged at the bottom of the blasting hole; the wide part of the pipe fitting joint is connected with one end, far away from the bottom of the blast hole, of the explosive loading pipe, and the narrow part of the pipe fitting joint is connected with the stemming pipe; the stemming tube is limited in the medicine feeding tube. The utility model discloses possess and send the medicine distance long, the charge capacity is big, and withdrawal gas pipe ratio is high, and drill way hole sealing easy operation is swift, and the effectual advantage of hole sealing.
Description
Technical Field
The utility model relates to a deep blasting technical field in colliery particularly, relates to a colliery deep hole presplitting blasting powder conveying pipe withdrawing device.
Background
When the bedding drilling and pre-pumping coal seam gas is adopted as a regional outburst prevention measure on the coal working face of the outburst mine, a deep hole presplitting loosening blasting technology is preferably adopted to improve the gas extraction condition. As the blasting point of the mining face deep hole presplitting blasting charge is in the middle of the coal seam, the depth is generally more than 70m, the explosive quantity required by blasting work is large, and the work difficulty of sending the explosive into the hole is large. The mining PVC gas extraction pipe is generally used in deep hole blasting, the consumption amount of the extraction pipe is large, after blasting, the hole is instantaneously collapsed and sealed, a safety iron wire cannot recover the redundant PVC pipe, the blasting impact force of the section close to the hole opening is small, the PVC pipe left in the blasting hole forms a cavity, the cavity cannot be completely plugged, the hole is very easy to cause air leakage of the blasting hole, and the gas extraction effect of peripheral drilling holes is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a colliery deep hole presplitting blasting send pencil withdrawal device, possess and send the medicine distance long, the charge capacity is big, and withdrawal gas pipe ratio is high, and drill way hole sealing easy operation is swift, and the effectual advantage of hole sealing.
The embodiment of the utility model is realized like this:
a coal mine deep hole presplitting blasting powder feeding pipe withdrawing device comprises a blasting hole arranged in a coal body, wherein the withdrawing device is arranged in the blasting hole, and the withdrawing device comprises a powder charging pipe, a pipe fitting joint, a clay blasting pipe and a powder feeding pipe which are arranged at the bottom of the blasting hole; the wide part of the pipe fitting joint is connected with one end, far away from the bottom of the blast hole, of the explosive loading pipe, and the narrow part of the pipe fitting joint is connected with the stemming pipe; the stemming tube is limited in the medicine feeding tube.
Preferably, the medicine feeding pipe is formed by connecting a plurality of gas drainage pipes end to end, and the plurality of gas drainage pipes are PVC gas drainage pipes.
Preferably, the pipe fitting joint is a hollow cavity, the inner diameter of the wide part of the pipe fitting joint is equal to the outer diameter of the charging pipe, and the inner diameter of the narrow part of the pipe fitting joint is equal to the outer diameter of the stemming pipe.
Preferably, the inner diameter of the gas drainage pipe is larger than the outer diameter of the pipe fitting joint narrow portion and smaller than the outer diameter of the pipe fitting joint wide portion.
Preferably, one end of the medicine feeding pipe is in contact with the pipe fitting joint, and the other end of the medicine feeding pipe extends out of the orifice of the blast hole.
Preferably, a gas pipe plug is arranged at one end, close to the bottom of the blast hole, of the explosive loading pipe.
Preferably, the outer diameter of the medicine feeding pipe is equal to that of the medicine loading pipe, and the medicine loading pipe is a PVC gas drainage pipe.
The utility model has the advantages that:
(1) the head and the tail of each PVC gas drainage pipe can be connected or detached at will, and the PVC gas drainage pipe has strong stress capacity and can be used as a medicine feeding and withdrawing pipe fitting;
(2) the explosive charging pipe and the explosive feeding pipe are separated through the pipe fitting joint, and the gas drainage pipe is convenient for pushing the explosive charging pipe to the bottom of the blast hole;
(3) this deep hole presplitting blasting charge pipe withdrawing device, it is long to send the powder distance, and the charging capacity is big, and the withdrawal gas pipe ratio is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a coal mine deep hole presplitting blasting explosive feeding pipe withdrawing device provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of the blast hole sealing in embodiment 1 of the present invention.
Icon: 1. a coal body; 2. a blast hole; 3. a medicine loading pipe; 4. a pipe fitting joint; 5. a clay pipe is blasted; 6. a medicine delivery pipe; 7. gas pipe end cap.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "vertical", "horizontal", "inside", "outside", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1 and 2, the embodiment provides a coal mine deep hole presplitting blasting explosive feeding pipe withdrawing device, which comprises a blasting hole 2 arranged in a coal body 1, wherein the withdrawing device is arranged in the blasting hole 2, and comprises an explosive charging pipe 3 arranged at the bottom of the blasting hole 2, a pipe fitting joint 4, a stemming pipe 5 and an explosive feeding pipe 6; the wide part of the pipe fitting joint 4 is connected with one end of the explosive loading pipe 3, which is far away from the bottom of the blast hole 2, and the narrow part of the pipe fitting joint 4 is connected with the stemming pipe 5; the stemming tube 5 is limited in the medicine feeding tube 6.
The pipe fitting connects 4 to be the cavity, and the pipe fitting connects wide portion's internal diameter with the external diameter of charge pipe equals, the pipe fitting connect the internal diameter of narrow portion with the external diameter of stemming pipe equals, the pipe fitting connects 4 wide portion pipe diameters of pipe fitting to be 50mm, and the pipe fitting connects 4 narrow portion pipe fittings to be 35 mm.
The medicine feeding pipe 6 is formed by connecting a plurality of gas drainage pipes end to end, the gas drainage pipes are PVC gas drainage pipes, and the pipe diameter of each PVC gas drainage pipe is 50 mm. The inner diameter of the gas drainage pipe is larger than the outer diameter of the narrow part of the pipe fitting joint 4 and smaller than the outer diameter of the wide part of the pipe fitting joint 4.
One end of the medicine feeding pipe 6 is contacted with the pipe fitting joint 4, and the other end extends out of the orifice of the blast hole 2.
One end of the explosive charging pipe 4 close to the bottom of the hole 1 of the blasting hole is provided with a gas pipe plug 7, the explosive charging pipe 4 is a PVC gas drainage pipe, and the aperture is 50 mm.
The pipe diameter of the clay pipe 5 is 35 mm.
The working principle is as follows:
one end of the charge pipe 3 close to the hole bottom is sealed by a gas pipe plug 7, and one end of the charge pipe 3 far away from the hole bottom is sealed by a mud gun pipe 5 connected by a pipe fitting joint 4. Send powder pipe 6 to send charge pipe 3 to 2 hole bottoms in blast hole through pipe fitting joint 4, because the internal diameter that sends powder pipe 6 is between the wide portion external diameter and the narrow portion external diameter of crossover sub 4, send powder pipe 6 to send charge pipe 4 into the hole bottom through the mode of contact non-connection, send powder pipe 6 can swiftly break away from with charge pipe 4, the blast hole 2 of withdrawing from fast, after withdrawing from blast hole 2, carry out hole sealing processing to blast hole 2 again, carry out blasting work at last, the charge pipe 6 cyclic utilization that withdraws from. After blasting operation is carried out through the coal mine deep hole presplitting blasting powder feeding pipe withdrawing device, severe shock waves are sent out in blasting, high-temperature and high-pressure gas is generated, coal is crushed, the orifice end can be thoroughly compacted, and therefore the influence on the drawing effect of the peripheral drawing hole due to air leakage of the blasting hole 2 is avoided.
To sum up, the utility model provides a colliery deep hole presplitting blasting send pencil withdrawal device possesses to send the medicine distance long, and the charge capacity is big, and withdrawal gas pipe ratio is high, and drill way hole sealing easy operation is swift, and the effectual advantage of hole sealing.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A coal mine deep hole presplitting blasting powder feeding pipe withdrawing device comprises a blasting hole arranged in a coal body, and the withdrawing device is arranged in the blasting hole, and is characterized by comprising a powder charging pipe, a pipe fitting joint, a mud blasting pipe and a powder feeding pipe which are arranged at the bottom of the blasting hole; the wide part of the pipe fitting joint is connected with one end, far away from the bottom of the blast hole, of the explosive loading pipe, and the narrow part of the pipe fitting joint is connected with the stemming pipe; the stemming tube is limited in the medicine feeding tube.
2. The coal mine deep hole presplitting blasting explosive feeding pipe withdrawing device as claimed in claim 1, wherein the explosive feeding pipe is formed by connecting a plurality of gas drainage pipes end to end, and the plurality of gas drainage pipes are PVC gas drainage pipes.
3. The coal mine deep hole pre-splitting blasting explosive feeding pipe withdrawing device as claimed in claim 2, wherein the pipe fitting joint is a hollow cavity, the inner diameter of the wide part of the pipe fitting joint is equal to the outer diameter of the explosive charging pipe, and the inner diameter of the narrow part of the pipe fitting joint is equal to the outer diameter of the stemming pipe.
4. The coal mine deep hole pre-splitting blasting explosive feeding pipe withdrawing device as recited in claim 3, wherein the inner diameter of the gas drainage pipe is larger than the outer diameter of the pipe fitting joint narrow portion and smaller than the outer diameter of the pipe fitting joint wide portion.
5. The coal mine deep hole pre-splitting blasting explosive feeding pipe withdrawing device as claimed in claim 4, wherein one end of the explosive feeding pipe is in contact with the pipe fitting joint, and the other end of the explosive feeding pipe extends out of the hole opening of the blasting hole.
6. The coal mine deep hole presplitting blasting explosive feeding pipe withdrawing device as claimed in claim 1, wherein a gas pipe plug is arranged at one end of the explosive loading pipe close to the bottom of the blasting hole.
7. The coal mine deep hole presplitting blasting explosive feeding pipe withdrawing device as claimed in claim 1, wherein the outer diameter of the explosive feeding pipe is equal to the outer diameter of the explosive charging pipe, and the explosive charging pipe is a PVC gas drainage pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921134952.7U CN210464241U (en) | 2019-07-18 | 2019-07-18 | Coal mine deep hole presplitting blasting powder feeding pipe withdrawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921134952.7U CN210464241U (en) | 2019-07-18 | 2019-07-18 | Coal mine deep hole presplitting blasting powder feeding pipe withdrawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210464241U true CN210464241U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921134952.7U Expired - Fee Related CN210464241U (en) | 2019-07-18 | 2019-07-18 | Coal mine deep hole presplitting blasting powder feeding pipe withdrawing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN210464241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199091A (en) * | 2021-12-13 | 2022-03-18 | 攀钢集团工程技术有限公司 | Detonation cartridge device for upward medium-length hole and charge construction method |
-
2019
- 2019-07-18 CN CN201921134952.7U patent/CN210464241U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199091A (en) * | 2021-12-13 | 2022-03-18 | 攀钢集团工程技术有限公司 | Detonation cartridge device for upward medium-length hole and charge construction method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200505 Termination date: 20210718 |