CN218545473U - A drainage device that is arranged in colliery underground, deep hole to explode - Google Patents
A drainage device that is arranged in colliery underground, deep hole to explode Download PDFInfo
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- CN218545473U CN218545473U CN202222448804.0U CN202222448804U CN218545473U CN 218545473 U CN218545473 U CN 218545473U CN 202222448804 U CN202222448804 U CN 202222448804U CN 218545473 U CN218545473 U CN 218545473U
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Abstract
The utility model relates to a drainage device for deep hole blasting in colliery is in pit belongs to blasting engineering auxiliary device's in the pit technical field. The device mainly comprises a compressed air system, a compressed air pipe, a drainage pipe, a slag pipe and a hole packer. The method comprises the steps of connecting a compressed air pipe and a compressed air system, plugging the compressed air pipe and the compressed air system into a blast hole for about 1.5 to 2.0m, plugging a drainage slag pipe to a position which is 0.5 to 1.0m away from the bottom of the hole, sealing the blast hole by using a hole packer, opening the compressed air system, injecting high-pressure air into the blast hole through the compressed air pipe, and discharging accumulated water and debris at the bottom of the hole from the drainage slag pipe by using pressure difference. The utility model discloses equipment component part is simple, convenient to use, only needs to prepare two rubber tubes and combines the air-blast system in the pit, utilizes the hole packer with the big gun hole shutoff, just can discharge the ponding in the big gun hole safely fast. Because the pressure ratio is great in the drainage process also can take out the partial detritus in the big gun hole and make things convenient for the later stage powder charge, guarantee not contain water in the big gun hole, improved the efficiency of construction for the engineering progress has been accelerated, has guaranteed the powder charge quality.
Description
Technical Field
The utility model relates to a drainage device that is used for in the pit of colliery, deep hole blasting belongs to the technical field of blasting engineering auxiliary device in the pit.
Background
Coal seams undergo lengthy geological evolution during and after formation, resulting in a great deal of intergrowth and epigenetic damage. Particularly in the complex-structured coal seams presently disclosed, numerous faults and collapse columns often develop. For the dense fault area, because of rock breaking and low strength, a heading machine or a coal mining machine can be generally pushed forward easily and continuously, but when large-scale faults and collapse columns need to be penetrated, the high-strength rock stratum with a large range can be used for blocking, and the efficiency of a working face is severely limited.
In order to improve the fully mechanized mining efficiency, a horizontal medium-and deep-hole presplitting blasting method is often adopted to perform pre-weakening treatment on hard rock mass. When horizontal medium and deep holes are drilled, due to moisture in rock strata and moisture generated when a drilling machine washes the holes, partial accumulated water and rock debris exist at the bottoms of the medium and deep holes, so that adverse consequences such as difficult explosive charging, failure of explosive and the like are caused, and the safety of blasting operation and the progress of engineering are seriously influenced.
The water drainage device for the medium-length and deep-hole blast holes is mainly concentrated on the open-air blast holes, and for example, patents such as 'a blast hole drainage device for deep-hole blasting' (application number 201811592356.3), 'an artificial drainage device and method for open-air medium-length hole blasting' (application number CN 201710828316.3), 'a blast hole drainage device' (application number CN 20370320.6), 'a deep-hole blasting blast hole drainage device' (application number CN 201120299798.6) and the like disclose an artificial drainage device and method for open-air medium-length hole blasting. At present, researches on drainage devices and methods for underground medium and deep holes of coal mines are less. The device is used for solving the technical problems in the background technology, safely and conveniently discharging accumulated water in underground middle and deep holes, and carrying out rock debris in blast holes along the belt in the drainage process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide a drainage device that is used for the deep hole blasting in the pit of colliery.
The technical scheme of the utility model is that: a drainage device for underground medium-length hole blasting of a coal mine comprises a compressed air pipe, a drainage pipe, a slag pipe and a hole packer; the blast hole is formed in the rock body, a hole packer is arranged at the opening of the blast hole, one end of a pressure air pipe is connected with an underground pressure air system, the other end of the pressure air pipe and one end of a drainage slag pipe penetrate through the hole packer together to be plugged into the blast hole, and the other end of the drainage slag pipe is fixed outside the hole and used for discharging water and slag in the blast hole.
And an air outlet end of the air compression pipe is plugged into the blast hole for 1.5 to 2.0m.
One end of the drainage slag pipe is plugged into a position which is 0.5 to 1.0m away from the bottom end of the blast hole.
The beneficial effects of the utility model are that: the utility model discloses equipment component part is simple, convenient to use, only needs to prepare two rubber tubes and combines the air-blast system in the pit, utilizes the hole packer with the big gun hole shutoff, just can discharge the ponding in the big gun hole safely fast. Because pressure ratio is great in the drainage process also can take out the partial detritus in the big gun hole, make things convenient for later stage powder charge, guarantee not contain water in the big gun hole, improved the efficiency of construction for the engineering progress has been accelerated, has guaranteed powder charge quality. Compared with other blast hole devices, the device has the advantages of simple structure and convenient operation, directly utilizes the underground compressed air system, does not need to provide an additional power source, and avoids underground safety accidents caused by the power source. In addition, compared with other devices which mostly adopt a negative pressure principle to pump out water in the blast hole, the device utilizes positive pressure to press out the water through the water discharge pipe, and because the pressure is higher, partial rock debris in the blast hole can be discharged along with the water, and the functions of simultaneously discharging water and slag are achieved.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of a method for treating accumulated water at the bottom of a horizontal medium-length hole blast hole of a coal mine working face, which is a sectional view along the length direction of a blast hole for convenience of explanation.
Reference numbers in the figures: 1-a rock mass; 2-water accumulation and residue at the bottom of the hole; 3, pressing an air pipe; 4-drainage and slag pipe; 5, hole packer; 6, air inlet of air compression pipe; 7, water outlet of a drainage and slag pipe; 8, an underground compressed air system.
Detailed Description
In order to clearly understand the technical features and objects of the present invention, the technical solution of the present invention will be described in detail with reference to the drawings, but the present invention is not limited thereto.
In order to improve the efficiency of the coal mine working face when passing through hard rock structures such as faults or collapse columns, the medium-and deep-hole blasting technology is adopted to carry out advanced pre-blasting treatment on the hard rock structures in the range of the working face. When a horizontal middle-deep hole and a horizontal deep hole are drilled, partial accumulated water and rock debris are usually caused at the bottom of the hole due to the water in a rock stratum and the water in the hole washing process of a drilling machine, so that the adverse consequences of difficult explosive charging, failure of explosive and the like are caused, and the engineering progress is seriously influenced. Therefore, the utility model provides a drainage device for the underground middle and deep hole blasting of the coal mine. Connecting one end of a pressure air pipe with an underground pressure air system, plugging the other end of the pressure air pipe into a blast hole for 1.5 to 2.0m, plugging a drainage slag pipe into a position 0.5 to 1.0m away from the bottom end of the blast hole, plugging the blast hole by using a hole packer, fixing the outlet end of the drainage slag pipe, opening the pressure air system, completing drainage work of the blast hole, and discharging part of settled slag in the drainage process. The air pressure system is provided by a ground air compressor room, the air pressure of the air pressure system is adjusted to be 0.4-0.7 MPa, and the rubber pipe with the inner diameter of 32mm is selected as the water drainage and slag pipe. In addition, a common compressed air pipe (with the inner diameter of 11.5 mm) connected with an underground compressed air system can also be directly used as the compressed air pipe of the device.
The length of the underground coal mine drilling hole is 40m, and the diameter of the drilling hole is 90 mm.
The utility model discloses a drainage device that is arranged in colliery underground, deep hole to explode, the device's realization route is:
the method comprises the following steps: and (4) plugging the drainage and slag pipe 4 to the bottom of the hole, and then drawing out the hole for 0.5 to 1.0m, wherein the inner diameter of the drainage and slag pipe is 32mm.
Step two: and (3) connecting an air inlet 6 of the compressed air pipe 3 with an underground compressed air system 8 in a plug-in connection mode, tightly fixing the compressed air pipe by using a pull rivet, and plugging the other end of the compressed air pipe 3 into the blast hole for about 1.5 to 2.0m. The internal diameter of the air compression pipe is 11.5mm, and a pressure regulating valve is additionally arranged at the joint of the air compression pipe and the underground air compression system, so that the pressure of the air compression pipe can be regulated in real time.
Step three: the blast hole is sealed by a hole sealing device 5, wherein the hole sealing device can be a towel, a woven bag cotton and other articles, and the hole sealing purpose can be achieved.
Step four: and (3) opening the compressed air system 8, and injecting high-pressure air into the blast hole through the compressed air pipe 3, wherein the air pressure is adjusted to be higher by a pressure adjusting valve (0.4-0.7 MPa), and the hole sealing quality of the hole sealing device 5 is ensured, so that sufficient pressure is kept in the blast hole.
Step five: and fixing a drainage and slag pipe 4, placing the pipe orifice towards a safe place and enabling the pipe orifice to be lower than the height of the blast hole, and discharging accumulated water and residues 2 at the bottom of the blast hole by utilizing the pressure difference between the inside and the outside of the blast hole.
Finally, it is noted that the above embodiments illustrate rather than limit the technical solution of the present invention, and that, although the present invention has been described with reference to the embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (3)
1. A drainage device for underground medium and deep hole blasting of a coal mine is characterized in that: comprises a compressed air pipe, a drainage and slag pipe and a hole packer; the blast hole is arranged on the rock body, a hole packer is arranged at the opening of the blast hole, one end of a compressed air pipe is connected with an underground compressed air system, the other end of the compressed air pipe and one end of a drainage slag pipe penetrate through the hole packer together to be plugged into the blast hole, and the other end of the drainage slag pipe is fixed outside the hole and used for discharging water and slag in the blast hole.
2. The water drainage device for medium and deep hole blasting in the underground coal mine according to claim 1, wherein: and (4) plugging an air outlet end of the air compression pipe into the blast hole for 1.5 to 2.0m.
3. The water drainage device for medium and deep hole blasting in the underground coal mine according to claim 1, wherein: one end of the drainage slag pipe is plugged into a position which is 0.5 to 1.0m away from the bottom end of the blast hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222448804.0U CN218545473U (en) | 2022-09-15 | 2022-09-15 | A drainage device that is arranged in colliery underground, deep hole to explode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222448804.0U CN218545473U (en) | 2022-09-15 | 2022-09-15 | A drainage device that is arranged in colliery underground, deep hole to explode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218545473U true CN218545473U (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222448804.0U Active CN218545473U (en) | 2022-09-15 | 2022-09-15 | A drainage device that is arranged in colliery underground, deep hole to explode |
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|---|---|
| CN (1) | CN218545473U (en) |
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2022
- 2022-09-15 CN CN202222448804.0U patent/CN218545473U/en active Active
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