CN112302706A - Method for freely regulating and controlling depth of upper corner buried pipe to extract gas in goaf - Google Patents
Method for freely regulating and controlling depth of upper corner buried pipe to extract gas in goaf Download PDFInfo
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- CN112302706A CN112302706A CN202011359512.9A CN202011359512A CN112302706A CN 112302706 A CN112302706 A CN 112302706A CN 202011359512 A CN202011359512 A CN 202011359512A CN 112302706 A CN112302706 A CN 112302706A
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- 230000001276 controlling effect Effects 0.000 title claims abstract description 29
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000003780 insertion Methods 0.000 claims abstract description 13
- 230000037431 insertion Effects 0.000 claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 238000005065 mining Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002173 cutting fluid Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- 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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Abstract
The invention discloses a method for extracting gas in a goaf by freely regulating and controlling the depth of an upper corner buried pipe, which comprises the buried pipe for extracting the gas in the goaf and an insertion pipe for extracting the gas in an upper corner closed wall, wherein the buried pipe is paved on a roadway bottom plate. According to the method for freely regulating and controlling the depth of the upper corner buried pipe to extract the gas in the goaf, cutting fluid and a wind pipe are adopted to independently process a blade and a cutter head cutter holder in the process of changing and assembling, the cost of one-time goaf buried pipe is saved, the switching state of each vertical pipe stuffy plate in the goaf can be freely regulated and controlled outside an upper corner sealing wall by using a special stuffy plate device, the maximization of the gas effect of the buried pipe extraction goaf is guaranteed, the pipeline consumption cost can be effectively saved, meanwhile, the vertical pipe can be used for timely regulating and controlling the buried pipe depth according to the gas emission condition of a stope face, the gas concentration of the upper corner is reduced, and the safety production of the stope face is guaranteed.
Description
Technical Field
The invention relates to the field of gas exploitation, in particular to a method for freely regulating and controlling the depth of an upper corner buried pipe to extract gas in a goaf.
Background
The problem of gas overrun of the upper corner of a working face during stoping is always a problem to be solved urgently in a high-gas mine, and gas of a goaf is one of main reasons for gas overrun of the upper corner of the working face. The pipe burying method in the goaf is a common method for controlling the gas overrun of the upper corner. In the prior art, the goaf pipe burying mainly comprises two modes, namely a double pipe burying mode, namely a gas extraction pipeline is laid on the return air side of a working face, extraction is started after the pipeline is buried into the goaf for a certain length, a second gas extraction pipeline is buried at the same time, extraction is stopped after the first gas extraction pipeline loses the extraction effect, the second pipeline extraction is started, new pipelines are laid again, and the cycle is alternated in such a way until the working face is completely mined, the mode needs a large amount of manpower and material resources for processing, transporting and installing the extraction pipeline, and meanwhile, the gas extraction pipeline cannot be recovered, so that great economic loss is caused, for example, a 1000m stope face needs to be buried into a 2000m goaf gas extraction pipeline; and the other is a pneumatic valve control mode, namely, the pneumatic valves of the pumping and discharging pipe orifices in the goaf are opened and closed through remote control. The method has the advantages of saving pre-buried pipelines and has the defects of relatively high price and high requirement on the quality of the construction process. Meanwhile, the gas extraction effect of the buried pipe in the goaf is greatly influenced by the depth of the buried pipe in the goaf, and the position of an extraction port of the buried pipe in the traditional goaf cannot be freely regulated according to the gas emission condition of a stope face, so that the gas extraction effect of the buried pipe in the goaf is limited, and therefore, the method for freely regulating the depth of the buried pipe in the upper corner for extracting the gas in the goaf is provided.
Disclosure of Invention
The invention mainly aims to provide a method for freely regulating and controlling the depth of an upper corner buried pipe to extract gas in a goaf, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a device for freely regulating and controlling the depth of an upper corner buried pipe to extract gas in a worked-out section comprises the buried pipe for extracting the gas in the worked-out section and an insertion pipe for extracting the gas in an upper corner closed wall, wherein the buried pipe is paved on a roadway bottom plate, and the insertion pipe is hung on a roadway top plate;
the buried pipe is provided with a plurality of groups of three-way pipes, the three-way pipes are provided with vertical pipes, and a stuffy disk device for controlling the opening and closing of the three-way pipes is arranged in the vertical pipes.
Preferably, the buried pipe and the three-way pipe and the stand pipe are connected through a groove type hoop quick joint for mining.
Preferably, the pipe diameter of the stand pipe and the pipe diameter of the three-way pipe are the same as the pipe diameter of the buried pipe.
Preferably, the closing disc device comprises a half-sector closing disc hinge movably arranged inside the vertical pipe and a steel wire rope connected with the half-sector closing disc hinge and used for controlling the opening or closing of the half-sector closing disc hinge.
Preferably, a limiting part is arranged inside the vertical pipe and above the semi-sector hot plate hinge.
Preferably, the outer surface welding of half fan-shaped vexed dish hinge has the quartering iron pipe connection parallel with the buried pipe, wire rope keeps away from the one end of half fan-shaped vexed dish hinge and passes quartering iron pipe connection.
Preferably, the method for freely regulating and controlling the depth of the upper corner buried pipe to extract the gas in the goaf comprises the following steps:
firstly, extracting gas in a goaf by adopting a buried pipe, and extracting gas in an upper corner closed wall by adopting an insertion pipe;
secondly, detecting the gas emission condition of the stope face and judging the gas concentration of the upper corner;
thirdly, judging the depth of the buried pipe which needs to be adjusted according to the gas concentration of the upper corner;
fourthly, moving the buried pipe to the judged buried pipe depth.
Preferably, when the gas is extracted by adopting the pipe burying and the pipe inserting, the steel wire rope can be pulled, and the steel wire rope drives the semi-sector blind disc hinge to rotate so as to close the vertical pipe.
Compared with the prior art, the method for freely regulating and controlling the depth of the upper corner buried pipe to extract the gas in the goaf has the following beneficial effects:
1. the invention saves the cost of pipe burying in the goaf in one time, can realize the free regulation and control of the switch state of the half-sector blind disc hinge in each vertical pipe in the goaf by utilizing the specially-made blind disc device outside the upper corner sealed wall, and ensures the maximization of the gas effect of pipe burying and drainage in the goaf;
2. the method can effectively save the pipeline consumption cost, and meanwhile, the vertical pipe can be used for timely regulating and controlling the buried pipe depth according to the gas emission condition of the stope face, so that the gas concentration of the upper corner is reduced, and the safety production of the stope face is ensured.
Drawings
FIG. 1 is a structural diagram of a device for freely regulating and controlling the depth of an upper corner buried pipe for extracting gas in a goaf.
In the figure: 1. burying a pipe; 2. inserting a tube; 3. a three-way pipe; 4. a riser; 5. a groove type hoop quick joint for a mine; 6. a half-sector hinge for a closed tray; 7. a four-section iron pipe joint; 8. a wire rope; 9. and a limiting member.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
A device for freely regulating and controlling the depth of an upper corner buried pipe to extract gas in a worked-out section comprises a buried pipe 1 for extracting gas in the worked-out section and an insertion pipe 2 for extracting gas in an upper corner closed wall, wherein the buried pipe 1 is laid on a roadway bottom plate, and the insertion pipe 2 is hung on a roadway top plate;
the buried pipe 1 and the insertion pipe 2 are laid along the working face air return crossheading non-mining side.
A plurality of groups of three-way pipes 3 are arranged on the buried pipe 1, a vertical pipe 4 is arranged on the three-way pipe 3, and a stuffy plate device for controlling the opening and closing of the three-way pipe 3 is arranged in the vertical pipe 4.
The three-way pipes 3 are arranged at intervals of 6m and are not limited to 6m, the height of the vertical pipe 4 is 1.5m and is not limited to 1.5m, and the vertical pipe 4 takes anti-smashing, anti-pressure and anti-blocking measures.
The buried pipe 1 and the three-way pipe 3 and the vertical pipe 4 are connected through a groove type hoop quick joint 5 for mining.
The pipe diameter of the stand pipe 4 and the pipe diameter of the three-way pipe 3 are the same as the pipe diameter of the buried pipe 1, and the pipe diameters of the buried pipe 1 and the stand pipe 4 are 150mm-300 mm.
The closing disc device comprises a semi-sector closing disc hinge 6 movably arranged in the vertical pipe 4 and a steel wire rope 8 which is connected with the semi-sector closing disc hinge 6 and controls the semi-sector closing disc hinge 6 to open or close.
A limiting part 9 is arranged inside the vertical pipe 4 and above the semi-sector-shaped closing disk hinge 6.
A steel wire rope 8 is adopted to pull the half-sector-shaped closing disk hinge 6, and the half-sector-shaped closing disk hinge 6 is in contact with a limiting piece 9, so that the blocking effect when the closing disk is closed is ensured; the opening direction of the semi-fan-shaped closing disk hinge 6 is downward opening, so that the maximum opening degree of the hinge is guaranteed by utilizing the self gravity of the hinge and the pumping negative pressure effect of the pipeline.
The semi-sector hinge 6 is made of spring butterfly hinge stainless steel hinge.
The outer surface welding of half fan-shaped vexed dish hinge 6 has the quartering iron coupling 7 parallel with buried pipe 1, and wire rope 8 is kept away from the one end of half fan-shaped vexed dish hinge 6 and is passed quartering iron coupling 7.
A method for extracting gas in a goaf by freely regulating and controlling the depth of an upper corner buried pipe comprises the following steps:
firstly, extracting gas in a goaf by adopting a buried pipe 1, and extracting gas in an upper corner closed wall by adopting an insertion pipe 2;
secondly, detecting the gas emission condition of the stope face and judging the gas concentration of the upper corner;
thirdly, judging the depth of the buried pipe 1 which needs to be adjusted according to the gas concentration of the upper corner;
fourthly, moving the buried pipe 1 to the judged depth of the buried pipe 1.
When the buried pipe 1 and the insertion pipe 2 are used for extracting gas, the steel wire rope 8 can be pulled, the steel wire rope 8 drives the semi-sector-shaped closed disk hinge 6 to rotate, and the vertical pipe 4 is closed.
When the pipeline moves backwards along with the stoping of the working face, in order to ensure the continuity of gas extraction, when one of the two gas pipelines is clamped, the other gas extraction pipeline needs to be ensured to be normally extracted.
In conclusion, the method for freely regulating and controlling the depth of the upper corner buried pipe to extract the gas in the goaf saves the cost of the goaf buried pipe 1 for one time, can realize freely regulating and controlling the on-off state of the half-sector blind disc hinges 6 in each vertical pipe 4 in the goaf outside the upper corner closed wall by utilizing the special blind disc device, and ensures the maximization of the gas extraction effect of the goaf by the buried pipe 1;
the method can effectively save the pipeline consumption cost, and meanwhile, the vertical pipe 4 can be used for timely regulating and controlling the depth of the buried pipe 1 according to the gas emission condition of the stope face, so that the gas concentration of the upper corner is reduced, and the safety production of the stope face is ensured.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a device that upper corner pipe laying degree of depth freely adjusted and control adopted collecting space area gas which characterized in that: the device comprises a buried pipe (1) for extracting gas in a goaf and an insertion pipe (2) for extracting gas in an upper corner closed wall, wherein the buried pipe (1) is laid on a roadway bottom plate, and the insertion pipe (2) is hung on a roadway top plate;
the buried pipe (1) is provided with a plurality of groups of three-way pipes (3), the three-way pipes (3) are provided with vertical pipes (4), and a stuffy plate device for controlling the opening and closing of the three-way pipes (3) is arranged in the vertical pipes (4).
2. The device for freely regulating and controlling the depth of the upper corner buried pipe to extract the gas in the goaf according to claim 1, is characterized in that: the buried pipe (1) and the three-way pipe (3) and the vertical pipe (4) are connected through a groove type hoop quick joint (5) for mining.
3. The device for freely regulating and controlling the depth of the upper corner buried pipe to extract the gas in the goaf according to claim 2, is characterized in that: the pipe diameter of the stand pipe (4) and the pipe diameter of the three-way pipe (3) are the same as the pipe diameter of the buried pipe (1).
4. The device for freely regulating and controlling the depth of the upper corner buried pipe to extract the gas in the goaf according to claim 1, is characterized in that: the stuffy disk device comprises a semi-sector stuffy disk hinge (6) movably arranged in the vertical pipe (4) and a steel wire rope (8) which is connected with the semi-sector stuffy disk hinge (6) and controls the semi-sector stuffy disk hinge (6) to open or close.
5. The device for freely regulating and controlling the depth of the upper corner buried pipe for extracting the gas in the goaf according to claim 4, is characterized in that: and a limiting part (9) is arranged above the semi-sector stuffy disk hinge (6) in the vertical pipe (4).
6. The device for freely regulating and controlling the depth of the upper corner buried pipe for extracting the gas in the goaf according to claim 5, is characterized in that: the outer surface welding of half fan-shaped vexed dish hinge (6) has quartering iron pipe joint (7) parallel with buried pipe (1), wire rope (8) are kept away from the one end of half fan-shaped vexed dish hinge (6) and are passed quartering iron pipe joint (7).
7. The method for freely regulating and controlling the depth of the upper corner buried pipe to extract the gas in the goaf according to claim 1, is characterized by comprising the following steps:
firstly, extracting gas in a goaf by adopting a buried pipe (1), and extracting gas in an upper corner closed wall by adopting an insertion pipe (2);
secondly, detecting the gas emission condition of the stope face and judging the gas concentration of the upper corner;
thirdly, judging the depth of the buried pipe (1) which needs to be adjusted according to the gas concentration of the upper corner;
fourthly, moving the buried pipe (1) to the judged buried pipe (1) depth.
8. The method for freely regulating and controlling the depth of the upper corner buried pipe to extract the gas in the goaf according to claim 7, is characterized in that: when gas is extracted by adopting the buried pipe (1) and the insertion pipe (2), the steel wire rope (8) can be pulled, the steel wire rope (8) drives the semi-sector blind disc hinge (6) to rotate, and the vertical pipe (4) is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011359512.9A CN112302706B (en) | 2020-11-27 | 2020-11-27 | Method for freely regulating and controlling gas extraction in goaf through depth of upper corner buried pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011359512.9A CN112302706B (en) | 2020-11-27 | 2020-11-27 | Method for freely regulating and controlling gas extraction in goaf through depth of upper corner buried pipe |
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| CN112302706A true CN112302706A (en) | 2021-02-02 |
| CN112302706B CN112302706B (en) | 2023-05-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153415A (en) * | 2021-03-24 | 2021-07-23 | 中煤科工集团沈阳研究院有限公司 | Pneumatic control device for pipe burying in goaf and using method |
| CN114352343A (en) * | 2021-12-06 | 2022-04-15 | 煤炭科学技术研究院有限公司 | Low-gas occurrence high-strength mining working face gas overrun prevention and control method |
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| CN209742955U (en) * | 2019-04-22 | 2019-12-06 | 山西焦煤集团有限责任公司 | Remote control upper corner gas extraction system |
| CN210396797U (en) * | 2019-06-26 | 2020-04-24 | 耿全利 | Mechanical controllable three-way extraction device |
| CN111379585A (en) * | 2019-12-25 | 2020-07-07 | 山西潞安环保能源开发股份有限公司常村煤矿 | Method for managing gas buried pipe on upper corner of fully mechanized coal mining face |
-
2020
- 2020-11-27 CN CN202011359512.9A patent/CN112302706B/en active Active
Patent Citations (6)
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| CN201310375Y (en) * | 2008-12-12 | 2009-09-16 | 淮南矿业(集团)有限责任公司 | Rope drawing and remote control opening device for extracting and mining methane gas with buried pipe on coal face |
| CN102877880A (en) * | 2012-06-18 | 2013-01-16 | 淮南矿业(集团)有限责任公司 | Setback crossed shield extraction system on upper corner of working face and extraction method |
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| CN209742955U (en) * | 2019-04-22 | 2019-12-06 | 山西焦煤集团有限责任公司 | Remote control upper corner gas extraction system |
| CN210396797U (en) * | 2019-06-26 | 2020-04-24 | 耿全利 | Mechanical controllable three-way extraction device |
| CN111379585A (en) * | 2019-12-25 | 2020-07-07 | 山西潞安环保能源开发股份有限公司常村煤矿 | Method for managing gas buried pipe on upper corner of fully mechanized coal mining face |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153415A (en) * | 2021-03-24 | 2021-07-23 | 中煤科工集团沈阳研究院有限公司 | Pneumatic control device for pipe burying in goaf and using method |
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| CN114352343A (en) * | 2021-12-06 | 2022-04-15 | 煤炭科学技术研究院有限公司 | Low-gas occurrence high-strength mining working face gas overrun prevention and control method |
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| CN112302706B (en) | 2023-05-09 |
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