CN111636834A - Coal mine underground drilling anti-jet hole gas and slag removal system and method - Google Patents
Coal mine underground drilling anti-jet hole gas and slag removal system and method Download PDFInfo
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- CN111636834A CN111636834A CN202010543745.8A CN202010543745A CN111636834A CN 111636834 A CN111636834 A CN 111636834A CN 202010543745 A CN202010543745 A CN 202010543745A CN 111636834 A CN111636834 A CN 111636834A
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- gas
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- 238000005553 drilling Methods 0.000 title claims abstract description 76
- 239000003245 coal Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000002893 slag Substances 0.000 title claims abstract description 16
- 239000004047 hole gas Substances 0.000 title claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 239000002817 coal dust Substances 0.000 claims abstract description 9
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
- E21B21/015—Means engaging the bore entrance, e.g. hoods for collecting dust
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/067—Separating gases from drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a system and a method for preventing gas and slag removal through orifice spraying during underground drilling of a coal mine, and belongs to the technical field of coal mines. The drilling construction is completely controlled in the sealing device, the blowout-preventing hole device is firstly inserted into the coal wall, the drill bit and the drill rod penetrate into the blowout-preventing hole device, and during construction, coal scraps generated by drilling are discharged into a gas-water separator through the blowout-preventing hole gas discharging device, so that workers are prevented from sucking coal dust, and the drilling operation environment is purified; on one hand, gas generated by drilling is discharged into a coal mine underground gas extraction pipe network system, so that spraying holes are prevented, and the phenomenon that the gas of a drilled hole rushes into a roadway causes roadway gas overrun alarm is prevented.
Description
Technical Field
The invention belongs to the technical field of coal mines, and relates to a system and a method for preventing gas and slag removal through spraying holes during underground drilling of a coal mine.
Background
Gas extraction is an important measure for preventing and treating gas disasters in coal mines, but during drilling, a great amount of coal scraps and gas are poured into a roadway, the working environment of drilling construction workers is seriously influenced, and a high-gas area has a spray hole phenomenon, so that the gas in the roadway is over-limited to alarm, and even serious spray holes cause casualties.
Aiming at the problems of hole spraying during drilling, dust overrun and the like, a safer, more efficient and environment-friendly method for preventing gas and slag from being discharged from the spraying holes during drilling is urgently needed.
Disclosure of Invention
In view of the above, the present invention provides a system and a method for preventing gas and slag removal through hole injection during drilling in a coal mine.
In order to achieve the purpose, the invention provides the following technical scheme:
a coal mine underground drilling anti-jet hole gas and slag removal system comprises a mine extraction pipe network, an anti-jet hole gas removal device, a drilling machine, a gas-water separator, a negative pressure water drain tank and a pore plate flowmeter;
the mine extraction pipe network is connected with a negative pressure drainage tank through a first pipeline;
the negative pressure water drain tank is connected with the area of the drilling control coal seam through a second pipeline;
an orifice plate flowmeter is arranged on the second pipeline;
the negative pressure water drain tank is connected with the gas-water separator through a pipeline III;
the gas-water separator is connected with the area of the drilling control coal seam through a pipeline IV;
the second pipeline, the third pipeline and the fourth pipeline are simultaneously connected with the fifth pipeline;
and one end of the pipeline five is connected with the area of the coal seam control layer, and the other end of the pipeline five is connected with a drilling machine.
Optionally, a joint 1 is arranged at the joint of the drilling machine and the pipeline five;
a joint 2 is arranged at the joint of the second pipeline and the fifth pipeline;
a joint 3 is arranged at the joint of the pipeline four and the pipeline five;
and a wedge port is arranged at the joint of the pipeline five and the drilling control coal seam area.
Optionally, the joints 1, 2 and the interface 3 are further provided with an anti-static rubber backing ring.
Optionally, the ratio of the cross-sectional length of the wedge opening at one end of the coal seam control area of the drilling hole, the length of the wedge opening and the length of the five cross streets of the pipeline is 4: 3: 2.
the method for preventing gas and slag removal through hole injection during underground drilling of a coal mine based on the system comprises the following steps:
s1: the technology of preventing the spray holes and discharging the gas is adopted to prevent the spray holes from being sprayed during the underground drilling of the coal mine and prevent the gas in the drill holes from flowing into the roadway;
s2: before drilling, a wedge opening of the anti-jet hole gas-discharging deslagging device is firstly wedged into a coal wall at a drilling opening position, an anti-static rubber backing ring is installed in a device joint 1, and a drill bit and a drill rod penetrate into the device joint 1 for drilling construction;
s3: the joint 2 is connected into a coal mine underground gas extraction pipe network, and the gas of the drilled hole is extracted indirectly in the drilling period, so that the gas of the drilled hole is prevented from flowing into a roadway, and the gas of the roadway is prevented from exceeding the limit and alarming;
s4: the connector 3 is connected with a gas-water separator, coal dust, water and part of gas in the drilling process enter the gas-water separator, so that dust is prevented from permeating a roadway in the drilling process, and the gas is controlled to flow into the roadway in the drilling construction process;
s5: and during drilling construction, coal dust and accumulated water generated by drilling are discharged through the gas-water separator, and part of gas enters the underground coal mine gas extraction pipe network system through the gas-water separator.
The invention has the beneficial effects that: during construction, on one hand, coal dust generated by drilling is discharged into the gas-water separator through the jet hole and gas discharge prevention device, so that workers are prevented from sucking coal dust, and the drilling operation environment is purified; on one hand, gas generated by drilling is discharged into a coal mine underground gas extraction pipe network system, so that spraying holes are prevented, and the phenomenon that the gas of a drilled hole rushes into a roadway causes roadway gas overrun alarm is prevented.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a gas and slag removal system for preventing gas from being ejected from a nozzle during underground drilling of a coal mine;
FIG. 2 is a method for removing gas and slag through the anti-jet hole of the underground drilling of the coal mine.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
As shown in fig. 1 and 2, the system for removing gas and slag by preventing spraying holes during underground drilling of a coal mine comprises a mine extraction pipe network, a blowout-preventing hole gas-discharging device, a drilling machine, a gas-water separator, a negative pressure water drain tank and a pore plate flowmeter;
the mine extraction pipe network is connected with a negative pressure drainage tank through a first pipeline;
the negative pressure water drain tank is connected with the area of the drilling control coal seam through a second pipeline;
an orifice plate flowmeter is arranged on the second pipeline;
the negative pressure water drain tank is connected with the gas-water separator through a pipeline III;
the gas-water separator is connected with the area of the drilling control coal seam through a pipeline IV;
the second pipeline, the third pipeline and the fourth pipeline are simultaneously connected with the fifth pipeline;
and one end of the pipeline five is connected with the area of the coal seam control layer, and the other end of the pipeline five is connected with a drilling machine.
Optionally, a joint 1 is arranged at the joint of the drilling machine and the pipeline five;
a joint 2 is arranged at the joint of the second pipeline and the fifth pipeline;
a joint 3 is arranged at the joint of the pipeline four and the pipeline five;
and a wedge port is arranged at the joint of the pipeline five and the drilling control coal seam area.
Optionally, the joints 1, 2 and the interface 3 are further provided with an anti-static rubber backing ring.
Optionally, the cross-sectional length of the wedge port at one end of the area of the drilling control coal seam, the length of the wedge port and the length of the five cross-streets of the pipeline are respectively 400mm, 300mm and 200 mm.
The invention provides a method for preventing gas and slag removal from a spray hole during underground drilling of a coal mine, which comprises the following steps:
s1: the technology of preventing the spray holes and discharging the gas is adopted to prevent the spray holes from being sprayed during the underground drilling of the coal mine and prevent the gas in the drill holes from flowing into the roadway;
s2: the method and the device for removing gas and slag by adopting the anti-jet holes comprise the following steps: before drilling, a wedge opening of the anti-jet hole gas-discharging deslagging device is firstly wedged into a coal wall at a drilling opening position, an anti-static rubber backing ring is installed in a device joint 1, and a drill bit and a drill rod penetrate into the device joint 1 for drilling construction;
s3: the joint 2 is connected into a coal mine underground gas extraction pipe network, and the gas of the drilled hole is extracted indirectly in the drilling period, so that the gas of the drilled hole is prevented from flowing into a roadway, and the gas of the roadway is prevented from exceeding the limit and alarming;
s4: the connector 3 is connected with the gas-water separator, coal dust, water and partial gas of the drill hole enter the gas-water separator during drilling, so that dust is prevented from permeating the roadway during drilling, and meanwhile, the gas is controlled to flow into the roadway in a closed mode during drilling construction;
s5: and during drilling construction, coal dust and accumulated water generated by drilling are discharged through the gas-water separator, and part of gas enters the underground coal mine gas extraction pipe network system through the gas-water separator.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (5)
1. The utility model provides a coal mine is bored in pit and is prevented orifice row gas deslagging system which characterized in that: the system comprises a mine extraction pipe network, a blowout-preventing hole gas discharging device, a drilling machine, a gas-water separator, a negative pressure water discharging tank and a pore plate flowmeter;
the mine extraction pipe network is connected with a negative pressure drainage tank through a first pipeline;
the negative pressure water drain tank is connected with the area of the drilling control coal seam through a second pipeline;
an orifice plate flowmeter is arranged on the second pipeline;
the negative pressure water drain tank is connected with the gas-water separator through a pipeline III;
the gas-water separator is connected with the area of the drilling control coal seam through a pipeline IV;
the second pipeline, the third pipeline and the fourth pipeline are simultaneously connected with the fifth pipeline;
and one end of the pipeline five is connected with the area of the coal seam control layer, and the other end of the pipeline five is connected with a drilling machine.
2. The system of claim 1 for removing slag in coal mine underground drilling jet hole and gas discharge, which is characterized in that: a joint 1 is arranged at the joint of the drilling machine and the pipeline five;
a joint 2 is arranged at the joint of the second pipeline and the fifth pipeline;
a joint 3 is arranged at the joint of the pipeline four and the pipeline five;
and a wedge port is arranged at the joint of the pipeline five and the drilling control coal seam area.
3. The system of claim 2 for removing slag by preventing gas from being discharged from spraying holes during underground drilling of coal mines, which is characterized in that: and anti-static rubber backing rings are arranged at the joints 1, 2 and 3.
4. The system of claim 2 for removing slag by preventing gas from being discharged from spraying holes during underground drilling of coal mines, which is characterized in that: the ratio of the cross-sectional length of the wedge opening at one end of the coal seam control area of the drill hole, the length of the wedge opening and the length of the five cross streets of the pipeline is 4: 3: 2.
5. the coal mine underground drilling jet hole-preventing gas-discharging deslagging method based on the system of any one of claims 1-4 is characterized in that: the method comprises the following steps:
s1: the technology of preventing the spray holes and discharging the gas is adopted to prevent the spray holes from being sprayed during the underground drilling of the coal mine and prevent the gas in the drill holes from flowing into the roadway;
s2: before drilling, a wedge opening of the anti-jet hole gas-discharging deslagging device is firstly wedged into a coal wall at a drilling opening position, an anti-static rubber backing ring is installed in a device joint 1, and a drill bit and a drill rod penetrate into the device joint 1 for drilling construction;
s3: the joint 2 is connected into a coal mine underground gas extraction pipe network, and the gas of the drilled hole is extracted indirectly in the drilling period, so that the gas of the drilled hole is prevented from flowing into a roadway, and the gas of the roadway is prevented from exceeding the limit and alarming;
s4: the connector 3 is connected with a gas-water separator, coal dust, water and part of gas in the drilling process enter the gas-water separator, so that dust is prevented from permeating a roadway in the drilling process, and the gas is controlled to flow into the roadway in the drilling construction process;
s5: and during drilling construction, coal dust and accumulated water generated by drilling are discharged through the gas-water separator, and part of gas enters the underground coal mine gas extraction pipe network system through the gas-water separator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020104696277 | 2020-05-28 | ||
| CN202010469627 | 2020-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111636834A true CN111636834A (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010543745.8A Pending CN111636834A (en) | 2020-05-28 | 2020-06-15 | Coal mine underground drilling anti-jet hole gas and slag removal system and method |
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| Country | Link |
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| CN (1) | CN111636834A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647873A (en) * | 2020-12-22 | 2021-04-13 | 煤炭科学技术研究院有限公司 | Slag discharging device and drilling machine |
| CN112832703A (en) * | 2021-01-04 | 2021-05-25 | 中煤科工集团重庆研究院有限公司 | Hydraulic slotting and drilling coal cinder conveying and separating device |
| CN114412407A (en) * | 2021-12-30 | 2022-04-29 | 煤炭科学技术研究院有限公司 | Sealing dust-settling blowout preventer for underground drilling of coal mine |
| CN116792053A (en) * | 2023-08-25 | 2023-09-22 | 山东天河科技股份有限公司 | Underground coal mine drilling blowout preventer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647873A (en) * | 2020-12-22 | 2021-04-13 | 煤炭科学技术研究院有限公司 | Slag discharging device and drilling machine |
| CN112832703A (en) * | 2021-01-04 | 2021-05-25 | 中煤科工集团重庆研究院有限公司 | Hydraulic slotting and drilling coal cinder conveying and separating device |
| CN114412407A (en) * | 2021-12-30 | 2022-04-29 | 煤炭科学技术研究院有限公司 | Sealing dust-settling blowout preventer for underground drilling of coal mine |
| CN114412407B (en) * | 2021-12-30 | 2023-09-08 | 煤炭科学技术研究院有限公司 | Underground coal mine drilling sealing dust-falling blowout preventer |
| CN116792053A (en) * | 2023-08-25 | 2023-09-22 | 山东天河科技股份有限公司 | Underground coal mine drilling blowout preventer |
| CN116792053B (en) * | 2023-08-25 | 2023-11-14 | 山东天河科技股份有限公司 | Underground coal mine drilling blowout preventer |
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