CN213627661U - Underground low-permeability near-distance coal seam group hydraulic punching permeability-increasing device - Google Patents
Underground low-permeability near-distance coal seam group hydraulic punching permeability-increasing device Download PDFInfo
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- CN213627661U CN213627661U CN202022548050.7U CN202022548050U CN213627661U CN 213627661 U CN213627661 U CN 213627661U CN 202022548050 U CN202022548050 U CN 202022548050U CN 213627661 U CN213627661 U CN 213627661U
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Abstract
The utility model discloses a low permeability low coverage coal seam crowd waterpower of underground punches a hole anti-reflection device, including drilling rod, the drill bit that punches a hole, directional drilling machine, high-pressure rubber pipe one, high-pressure water injection pump, high-pressure rubber pipe two, water tank and water pipe, high-pressure rubber pipe one and high-pressure rubber pipe two are located respectively on the delivery port and the water inlet of high-pressure water injection pump, the water tank is located on the high-pressure rubber pipe two, the water pipe is located on the water tank, directional drilling machine is located on the high-pressure rubber pipe one, the drilling rod is located on the directional drilling machine, the free end of drilling rod is located to the drill bit that. The utility model relates to a take off coal technical field, specifically provide a low permeability low coverage coal seam crowd hydraulic punching a hole anti-reflection device in pit realizes taking off coal safely, shortens and takes off coal time limit for a project purpose.
Description
Technical Field
The utility model relates to a take off coal technical field, specifically indicate a low permeability low coverage coal seam crowd hydraulic punching a hole anti-reflection device in pit.
Background
The outburst mine soft low-permeability short-distance coal seam group cross-cut coal uncovering has the disadvantages of large coal and gas outburst risk, poor drilling and extracting effect and long coal uncovering period. In order to ensure coal uncovering safety and shorten coal uncovering time, currently, hydraulic punching, hydraulic fracturing and deep hole presplitting blasting permeability-increasing measures are mainly adopted in coal mines in China. When a hydraulic punching measure is adopted, a drill hole penetrating through all coal seams is constructed, the hole diameter of the punch hole is small, only a single coal seam is punched, only an orifice of the drill hole is connected with an external space, and only one channel for punching out coal slag has a small coal punching amount; when a hydraulic fracturing measure is adopted, all coal seams of a coal seam group are fractured, the phenomenon that the fracturing effect of a fractured target coal seam is uncertain and uneven exists, a directional drilling machine is not adopted for construction, and the coal seam permeability increasing effect along the tunneling direction of a roadway is poor; when deep hole presplitting blasting measures are adopted, explosive quantity needs to be increased, and safety risk is too high.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned condition, for overcoming prior art's defect, the utility model provides a low permeability low coverage coal seam crowd waterpower punches a hole anti-reflection device in pit realizes safe coal uncovering, shortens coal uncovering time limit for a project purpose.
The utility model adopts the following technical scheme: the utility model relates to a low permeability low coverage coal seam crowd waterpower of pit anti-reflection device that punches a hole, including drilling rod, the drill bit that punches a hole, directional drilling machine, high-pressure rubber pipe one, high-pressure water injection pump, high-pressure rubber pipe two, water tank and water pipe, high-pressure rubber pipe one and high-pressure rubber pipe two are located respectively on the delivery port and the water inlet of high-pressure water injection pump, the water tank is located on the high-pressure rubber pipe two, the water pipe is located on the water tank, directional drilling machine is located on the high-pressure rubber pipe one, the drilling rod is located on the directional drilling machine, the free end of drilling rod is located to the.
Further, the drill rod is arranged in a hollow mode.
The utility model also discloses a method for using of low permeability low coverage coal seam crowd hydraulic punching hole anti-reflection device in pit, including following step:
in a top plate roadway of a coal seam group, starting a directional drilling machine to construct a large-diameter drill hole which penetrates through the coal seam group and is communicated with the top plate roadway of the coal seam group and a bottom plate roadway of the coal seam group along the roadway construction direction through a punching drill bit;
step two, a punching drill bit, a drill rod, a first high-pressure rubber pipe, a high-pressure water injection pump, a second high-pressure rubber pipe, a water tank and a water pipe are connected with one another to form a high-pressure flushing system, a directional drilling machine is utilized to drive the drill rod, the drill rod drives the punching drill bit to be positioned to the lowest coal seam of a coal seam group, the high-pressure water injection pump is started, high-pressure water passes through the first high-pressure rubber pipe and the drill rod and finally enters the punching drill bit, the high-pressure water injection hole reserved in the punching drill bit is used for jetting the coal seam to perform hydraulic punching, the coal seam is broken under the action of the high-pressure water, the coal flows downwards enter a bottom plate roadway of the coal seam group to flush coal as much3/min；
And step three, after the lower coal seam is punched and permeability is increased, punching and permeability increasing are sequentially performed on other coal seams of the coal seam group from bottom to top.
Further, the diameter of the large-diameter drill hole is larger than 153 mm.
Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: according to the scheme, the hydraulic punching holes are adopted to increase the permeability of the close-distance coal seam group, a large amount of coal can be punched, a certain space is formed in the coal body, and the coal body is displaced to the formed space under the action of stress, so that the coal body is cracked, and the air permeability of the coal seam is increased; when the lower coal seam of the close-distance coal seam group is punched, the protective layer is mined locally, the pressure relief effect is realized on the adjacent upper coal seam, the punching operation is performed on the coal seam group in sequence, and the anti-reflection effect is more obvious; a directional drilling machine is adopted to construct a large-diameter drill hole to connect two existing roadways, a slag discharge channel is punched, the amount of punched coal is large, and holes and spray holes are not easy to block; the flushed coal slag is discharged from a lower roadway, so that the construction site environment is good; the permeability increasing effect is good, the gas extraction amount is improved, and the coal uncovering time is effectively shortened; the drilling is carried out along the tunneling direction for permeability increase, so that the method is safer and more reliable; simple structure, easy operation of the process flow and field practicability.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is the overall structure schematic diagram of the hydraulic punching permeability-increasing device for the underground low-permeability near-distance coal seam group.
The drilling machine comprises a drilling rod 1, a drilling rod 2, a punching drill bit 3, a directional drilling machine 4, a high-pressure rubber pipe I, a high-pressure water injection pump 5, a high-pressure rubber pipe II, a high-pressure rubber pipe 7, a water tank 8, a water pipe 9, a coal seam group roof roadway 10, a coal seam group floor roadway 11 and a large-diameter drilling hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1, the utility model relates to a low permeability low coverage near field coal seam crowd waterpower anti-reflection device punches a hole in pit, including drilling rod 1, drill bit 2, directional drilling machine 3, high-pressure rubber pipe 4, high-pressure water injection pump 5, two 6, water tank 7 and water pipe 8 of high-pressure rubber pipe, high-pressure rubber pipe 4 and two 6 locate respectively on the delivery port and the water inlet of high-pressure water injection pump 5, water tank 7 is located on two 6 of high-pressure rubber pipe, water pipe 8 is located on water tank 7, directional drilling machine 3 is located on high-pressure rubber pipe 4, drilling rod 1 is located on directional drilling machine 3, drill bit 2 locates the free end of drilling rod 1, be equipped with the high pressure water hole on the drill bit 2 that punches a hole.
The drill rod 1 is arranged in a hollow manner.
The utility model also discloses a method for using of low permeability low coverage coal seam crowd hydraulic punching hole anti-reflection device in pit, including following step:
in a coal seam group roof roadway 9, starting a directional drilling machine 3 to construct a large-diameter drill hole 11 which penetrates through a coal seam group and is communicated with the coal seam group roof roadway 9 and a coal seam group floor roadway 10 along a roadway construction direction through a punching drill bit 2;
secondly, a punching drill bit 2, a drill rod 1, a first high-pressure rubber pipe 4, a high-pressure water injection pump 5, a second high-pressure rubber pipe 6, a water tank 7 and a water pipe 8 are connected with one another to form a high-pressure flushing system, the drill rod 1 is driven by a directional drilling machine 3, the drill rod 1 drives the punching drill bit 2 to be positioned to the lowest coal seam of a coal seam group, the high-pressure water injection pump 5 is started, high-pressure water enters the punching drill bit 2 through the first high-pressure rubber pipe 4 and the drill rod 1 and finally enters the coal seam 2, high-pressure water injection holes reserved in the punching drill bit 2 are used for hydraulic punching, the coal seam is broken under the action of the high-pressure water and enters a bottom plate roadway 10 of the coal seam group along with the downward flow of the water, coal is flushed as much as possible, the quantity of;
and step three, after the lower coal seam is punched and permeability is increased, punching and permeability increasing are sequentially performed on other coal seams of the coal seam group from bottom to top.
The diameter of the large diameter bore hole 11 is larger than 153 mm.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (2)
1. The utility model provides a low permeability low coverage coal seam crowd waterpower punches a hole anti-reflection device in pit, its characterized in that, includes the drilling rod, punches a hole the drill bit, directional drilling machine, high-pressure rubber pipe one, high-pressure water injection pump, high-pressure rubber pipe two, water tank and water pipe, high-pressure rubber pipe one and high-pressure rubber pipe two are located respectively on the delivery port and the water inlet of high-pressure water injection pump, the water tank is located on the high-pressure rubber pipe two, the water pipe is located on the water tank, directional drilling machine locates on the high-pressure rubber pipe one, the drilling rod is located on the directional drilling machine, the free end of drilling rod is.
2. The hydraulic punching and permeability increasing device for the underground low-permeability near-distance coal seam group according to claim 1, wherein the drill rod is arranged in a hollow mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022548050.7U CN213627661U (en) | 2020-11-06 | 2020-11-06 | Underground low-permeability near-distance coal seam group hydraulic punching permeability-increasing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022548050.7U CN213627661U (en) | 2020-11-06 | 2020-11-06 | Underground low-permeability near-distance coal seam group hydraulic punching permeability-increasing device |
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| Publication Number | Publication Date |
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| CN213627661U true CN213627661U (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022548050.7U Active CN213627661U (en) | 2020-11-06 | 2020-11-06 | Underground low-permeability near-distance coal seam group hydraulic punching permeability-increasing device |
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| CN (1) | CN213627661U (en) |
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- 2020-11-06 CN CN202022548050.7U patent/CN213627661U/en active Active
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