CN108798758A - Along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique - Google Patents
Along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique Download PDFInfo
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- CN108798758A CN108798758A CN201710290755.3A CN201710290755A CN108798758A CN 108798758 A CN108798758 A CN 108798758A CN 201710290755 A CN201710290755 A CN 201710290755A CN 108798758 A CN108798758 A CN 108798758A
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- gas
- upper corner
- goaf
- protection casing
- mining
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- 238000005065 mining Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005086 pumping Methods 0.000 title claims abstract description 27
- 239000003245 coal Substances 0.000 claims abstract description 42
- 239000011148 porous material Substances 0.000 claims abstract description 34
- 238000000605 extraction Methods 0.000 claims abstract description 28
- 238000005553 drilling Methods 0.000 claims abstract description 27
- 238000010276 construction Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 241000209094 Oryza Species 0.000 description 5
- 235000007164 Oryza sativa Nutrition 0.000 description 5
- 235000009566 rice Nutrition 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- 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)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
It is along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique, feature the present invention relates to a kind of：Including a coal seam high position drill site of constructing out of air return lane, 1. after long range large diameter borehole of being constructed respectively forwardly and backward along mining direction in drill site with track-mounted electric drilling machine, the protection casing with sieve pore of the certain length processed is headed into large diameter borehole after exiting drilling tool, sealing of hole is carried out to large diameter borehole, 2. in main entry or in going up a hill by with sieve pore protection casing and corresponding extraction pipeline connect and extraction carried out to goaf and gas at upper corner.It is reduced than high-order drill site sector arrangement drilling construction amount nearly by 50%, it is at low cost, large diameter borehole is constructed in coal seam, faster than formation pore speed of application, and part coal is produced when construction, save mining costs, mash gas extraction flow is big, and protection casing is equipped in large diameter borehole, is not easy collapse hole, mash gas extraction effect is more preferable, also effectively prevents gas exceeding limit function in tunnel.
Description
Technical field
It is the present invention relates to hole pumping and mining goaf and gas at upper corner technique, more particularly to a kind of to be bored along top major diameter concordant
Hole extraction goaf and gas at upper corner technique.
Background technology
Gas is the main hazard source during coal production.Raising with coal working face production capacity and working face
The quickening of fltting speed, necessarily causes gas emission to increase.High-order drill site sector arranges hole pumping and mining technology due to its extraction
Time is long, and extraction system is simple, it has also become solves the problems, such as the main method of the easy spontaneous combustion super high seam gas exceeding limit of high methane.For
High gas face, high-order drill site sector arrangement hole pumping and mining method are both solve goaf and Gas Emissions of Adjacent Layers effective
The feasible measure of approach and control face gas exceeding limit.But the shortcomings that high position drill site sector arrangement hole pumping and mining technology
Have：High-order drill site generally will be from construction to top plate in the air return lane in this coal seam, and the construction gradient is steep, and rock drill site cost is high；It is high
Fan-shaped arrangement boring aperture in the drill site of position is generally 94mm-133mm, and boring aperture is small, and flow is small, and extracting result is undesirable,
There is collapse hole phenomenon, extracting result can be seriously affected；General 50-100 meters of high-order drill site is constructed one, the drill site number in crossheading compared with
It is more, it is of high cost；It lays extraction pipeline in air return lane with the extraction borehole in drill site to be connected, pipeline laying is of high cost；This method is not
Can extraction to gas at upper corner.
Invention content
It is taken out along top major diameter concordant drilling in view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of
Goaf and gas at upper corner technique are adopted, high-order drill site sector arranges hole pumping and mining goaf gas work in can effectively replace top plate
Skill.
The technical solution adopted by the present invention to solve the technical problems is：It is a kind of mined out along top major diameter concordant hole pumping and mining
Area and gas at upper corner technique, feature are：Including a coal seam high position drill site of constructing out of air return lane, track-mounted electric is 1. used
Drilling machine respectively forwardly and is backward constructed in drill site along mining direction after long range large diameter borehole, will be processed after exiting drilling tool
The protection casing with sieve pore of good certain length heads into large diameter borehole, sealing of hole is carried out to large diameter borehole, 2. big
Lane or go up a hill the middle protection casing by with sieve pore and corresponding extraction pipeline connect to goaf and gas at upper corner into
Row extraction.
Wherein：3. when needing long length large diameter borehole, at interval of one coal seam of certain distance construction out of air return lane
1. high-order drill site repeats step in all coal seam high position drill sites, a connecting leg of constructing between two coal seam high position drill sites is small
The protection casing that sieve pore is carried between former and later two coal seam high position drill sites is connected, repeats step 2. by drill site.
Wherein：Protection casing with sieve pore is provided at both ends with connection-peg variable-diameter structure, protection casing PVC or made of metal
At.
Wherein：Large diameter borehole trend corresponds to gas at upper corner stream.
Wherein：With the propulsion of stope, directly top and old top is constantly caving, and the protection casing with sieve pore is continuous
Fall in goaf, so that goaf and gas at upper corner stream is obtained extraction.
The beneficial effects of the invention are as follows：It is nearlyr by 50% than the arrangement drilling construction amount reduction of high-order drill site sector, it is at low cost, it is big straight
Diameter drilling 6 is all constructed in coal seam 1, faster than formation pore speed of application, and construction produces part coal simultaneously, saving coal mining at
This, mash gas extraction flow is big, and the protection casing 15 with sieve pore is set in large diameter borehole 6, is not easy collapse hole, mash gas extraction effect is more
It is good, also effectively prevent gas exceeding limit function in tunnel.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 present invention construction horizontal layout schematic diagram；
Fig. 2 present invention construction A-A diagrammatic cross-sections；
Fig. 3 Construction Arrangement diagrammatic cross-sections of the present invention.
1. coal seam in figure, 3. stopes, 4. top plates, 5. coal seam high position drill sites, 6. large diameter boreholes, 7. air return lanes,
8. goaf, 9. Gas-Flows, 10. upper corners, 11. track-mounted electric drilling machines, 13. old tops, 14. directly push up, 15. protection casings,
16. the small drill site of connecting leg.
Specific implementation mode
First embodiment, it is a kind of along top major diameter concordant hole pumping and mining goaf 8 and upper corner referring to Fig. 1, Fig. 2, Fig. 3
Gas technique, feature are：Including a coal seam high position drill site 5 of constructing out of air return lane 7,1. existed with track-mounted electric drilling machine 11
Along mining direction, construction 500-1000 millimeters of major diameter of 100-200 meter of long range drills after 6 respectively forwardly and backward in drill site,
The protection casing 15 with sieve pore of the 1-2 processed rice length is headed into large diameter borehole 6 after exiting drilling tool, to major diameter
Drilling 6 carries out sealing of holes, 2. in main entry or in going up a hill by with sieve pore protection casing 15 and corresponding extraction pipeline connect
Extraction is carried out to goaf and 10 gas of upper corner.
It effectively substitutes high-order drill site sector in top plate 4 and arranges hole pumping and mining goaf gas technique.
Second embodiment, it is a kind of along top major diameter concordant hole pumping and mining goaf 8 and upper corner referring to Fig. 1, Fig. 2, Fig. 3
Gas technique, feature are：Including a coal seam high position drill site 5 of constructing out of air return lane 7,1. existed with track-mounted electric drilling machine 11
Along mining direction, construction 500-1000 millimeters of major diameter of 100-200 meter of long range drills after 6 respectively forwardly and backward in drill site,
The protection casing 15 with sieve pore of the 1-2 processed rice length is headed into large diameter borehole 6 after exiting drilling tool, to major diameter
Drilling 6 carries out sealing of holes, 2. in main entry or in going up a hill by with sieve pore protection casing 15 and corresponding extraction pipeline connect
Extraction is carried out to goaf and 10 gas of upper corner.
Wherein：3. interior at interval of 200-400 meters of distance constructions one from air return lane 7 when needing long length large diameter borehole 6
1. a coal seam high position drill site 5 repeats step, constructs between two coal seam high position drill sites 5 in all coal seam high position drill sites 5
The protection casing 15 that sieve pore is carried between former and later two coal seam high position drill sites 5 is connected, is repeated by the small drill site 16 of one connecting leg
Step is 2..
It effectively substitutes high-order drill site sector in top plate 4 and arranges hole pumping and mining goaf gas technique.
3rd embodiment, it is a kind of along top major diameter concordant hole pumping and mining goaf 8 and upper corner referring to Fig. 1, Fig. 2, Fig. 3
Gas technique, feature are：Including a coal seam high position drill site 5 of constructing out of air return lane 7,1. existed with track-mounted electric drilling machine 11
Along mining direction, construction 500-1000 millimeters of major diameter of 100-200 meter of long range drills after 6 respectively forwardly and backward in drill site,
The protection casing 15 with sieve pore of the 1-2 processed rice length is headed into large diameter borehole 6 after exiting drilling tool, to major diameter
Drilling 6 carries out sealing of holes, 2. in main entry or in going up a hill by with sieve pore protection casing 15 and corresponding extraction pipeline connect
Extraction is carried out to goaf and 10 gas of upper corner.
Wherein：3. interior at interval of 200-400 meters of distance constructions one from air return lane 7 when needing long length large diameter borehole 6
1. a coal seam high position drill site 5 repeats step, constructs between two coal seam high position drill sites 5 in all coal seam high position drill sites 5
The protection casing 15 that sieve pore is carried between former and later two coal seam high position drill sites 5 is connected, is repeated by the small drill site 16 of one connecting leg
Step is 2..
Wherein：Protection casing 15 with sieve pore is provided at both ends with connection-peg variable-diameter structure, protection casing 15 PVC or gold
Category is made.
It effectively substitutes high-order drill site sector in top plate 4 and arranges hole pumping and mining goaf gas technique.
Fourth embodiment, it is a kind of along top major diameter concordant hole pumping and mining goaf 8 and upper corner referring to Fig. 1, Fig. 2, Fig. 3
Gas technique, feature are：Including a coal seam high position drill site 5 of constructing out of air return lane 7,1. existed with track-mounted electric drilling machine 11
Along mining direction, construction 500-1000 millimeters of major diameter of 100-200 meter of long range drills after 6 respectively forwardly and backward in drill site,
The protection casing 15 with sieve pore of the 1-2 processed rice length is headed into large diameter borehole 6 after exiting drilling tool, to major diameter
Drilling 6 carries out sealing of holes, 2. in main entry or in going up a hill by with sieve pore protection casing 15 and corresponding extraction pipeline connect
Extraction is carried out to goaf and 10 gas of upper corner.
Wherein：3. interior at interval of 200-400 meters of distance constructions one from air return lane 7 when needing long length large diameter borehole 6
1. a coal seam high position drill site 5 repeats step, constructs between two coal seam high position drill sites 5 in all coal seam high position drill sites 5
The protection casing 15 that sieve pore is carried between former and later two coal seam high position drill sites 5 is connected, is repeated by the small drill site 16 of one connecting leg
Step is 2..
Wherein：Protection casing 15 with sieve pore is provided at both ends with connection-peg variable-diameter structure, protection casing 15 PVC or gold
Category is made.
Wherein：The trend of large diameter borehole 6 corresponds to gas at upper corner stream 9.
It effectively substitutes high-order drill site sector in top plate 4 and arranges hole pumping and mining goaf gas technique.
5th embodiment, it is a kind of along top major diameter concordant hole pumping and mining goaf 8 and upper corner referring to Fig. 1, Fig. 2, Fig. 3
Gas technique, feature are：Including a coal seam high position drill site 5 of constructing out of air return lane 7,1. existed with track-mounted electric drilling machine 11
Along mining direction, construction 500-1000 millimeters of major diameter of 100-200 meter of long range drills after 6 respectively forwardly and backward in drill site,
The protection casing 15 with sieve pore of the 1-2 processed rice length is headed into large diameter borehole 6 after exiting drilling tool, to major diameter
Drilling 6 carries out sealing of holes, 2. in main entry or in going up a hill by with sieve pore protection casing 15 and corresponding extraction pipeline connect
Extraction is carried out to goaf and 10 gas of upper corner.
Wherein：3. interior at interval of 200-400 meters of distance constructions one from air return lane 7 when needing long length large diameter borehole 6
1. a coal seam high position drill site 5 repeats step, constructs between two coal seam high position drill sites 5 in all coal seam high position drill sites 5
The protection casing 15 that sieve pore is carried between former and later two coal seam high position drill sites 5 is connected, is repeated by the small drill site 16 of one connecting leg
Step is 2..
Wherein：Protection casing 15 with sieve pore is provided at both ends with connection-peg variable-diameter structure, protection casing 15 PVC or gold
Category is made.
Wherein：The trend of large diameter borehole 6 corresponds to gas at upper corner stream 9.
Wherein：With the propulsion of stope 3, directly top 14 and old top 13 is constantly caving, and carries the retaining wall set of sieve pore
Pipe 15 is constantly fallen in goaf 8, and goaf 8 and 10 Gas-Flow 9 of upper corner is made to obtain extraction.
It effectively substitutes high-order drill site sector in top plate 4 and arranges hole pumping and mining goaf gas technique.
Claims (8)
1. it is a kind of along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique, it is characterized in that：Including from air return lane
One coal seam high position drill site of interior construction, 1. respectively forwardly and is backward applied in drill site along mining direction with track-mounted electric drilling machine
Section chief heads into the protection casing with sieve pore of the certain length processed greatly directly after exiting drilling tool after large diameter borehole
In diameter drilling, sealing of hole is carried out to large diameter borehole, is 2. taken out with corresponding in main entry or by the protection casing with sieve pore in going up a hill
Piping connection is adopted to get up to goaf and gas at upper corner progress extraction.
2. it is according to claim 1 a kind of along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique, it is special
Sign is：3. when needing long length large diameter borehole, bored at interval of one coal seam high position of certain distance construction out of air return lane
, in all coal seam high position drill sites, repeat step 1., a small drill site of connecting leg of constructing between two coal seam high position drill sites,
The protection casing for carrying sieve pore between former and later two coal seam high position drill sites is connected, repeats step 2..
3. it is according to claim 1 a kind of along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique, it is special
Sign is：Protection casing with sieve pore is provided at both ends with connection-peg variable-diameter structure, and protection casing is made of PVC or metal.
4. it is according to claim 1 a kind of along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique, it is special
Sign is：Large diameter borehole trend corresponds to gas at upper corner stream.
5. it is according to claim 2 a kind of along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique, it is special
Sign is：Protection casing with sieve pore is provided at both ends with connection-peg variable-diameter structure, and protection casing is made of PVC or metal.
6. it is according to claim 3 a kind of along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique, it is special
Sign is：Large diameter borehole trend corresponds to gas at upper corner stream.
7. it is according to claim 5 a kind of along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique, it is special
Sign is：Large diameter borehole trend corresponds to gas at upper corner stream.
8. a kind of along top major diameter concordant hole pumping and mining goaf and upper corner watt according to any one of claim 1-7
This technique, is characterized in that：With the propulsion of stope, directly top and old top is constantly caving, and carries the protection casing of sieve pore
It constantly falls in goaf, goaf and gas at upper corner stream is made to obtain extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290755.3A CN108798758B (en) | 2017-04-28 | 2017-04-28 | Process for extracting gas from goaf and upper corner along top large-diameter bedding drill hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290755.3A CN108798758B (en) | 2017-04-28 | 2017-04-28 | Process for extracting gas from goaf and upper corner along top large-diameter bedding drill hole |
Publications (2)
| Publication Number | Publication Date |
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| CN108798758A true CN108798758A (en) | 2018-11-13 |
| CN108798758B CN108798758B (en) | 2020-02-04 |
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| CN201710290755.3A Active CN108798758B (en) | 2017-04-28 | 2017-04-28 | Process for extracting gas from goaf and upper corner along top large-diameter bedding drill hole |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173295A (en) * | 2019-07-13 | 2019-08-27 | 中国矿业大学(北京) | A method of utilizing concordant directional drilling mash gas extraction and fire extinguishing |
| CN110486079A (en) * | 2019-09-26 | 2019-11-22 | 中煤科工集团重庆研究院有限公司 | A kind of gas pumping method of super high seam separate zone production |
| CN113446051A (en) * | 2021-07-30 | 2021-09-28 | 太原理工大学 | Goaf ultrahigh-position drill hole gas extraction method under roof cutting and roadway retaining process |
| CN113513360A (en) * | 2021-08-09 | 2021-10-19 | 太原理工大学 | Gas extraction method for single thick coal seam fully mechanized caving mining goaf |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173295A (en) * | 2019-07-13 | 2019-08-27 | 中国矿业大学(北京) | A method of utilizing concordant directional drilling mash gas extraction and fire extinguishing |
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| CN113446051A (en) * | 2021-07-30 | 2021-09-28 | 太原理工大学 | Goaf ultrahigh-position drill hole gas extraction method under roof cutting and roadway retaining process |
| CN113513360A (en) * | 2021-08-09 | 2021-10-19 | 太原理工大学 | Gas extraction method for single thick coal seam fully mechanized caving mining goaf |
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| Publication number | Publication date |
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| CN108798758B (en) | 2020-02-04 |
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Address after: 113122 No.11 Binhe Road, Shenfu demonstration area, Fushun City, Liaoning Province Patentee after: Shenyang Research Institute Co.,Ltd. Address before: 113122, Binhe Road, Fushun Economic Development Zone, Liaoning, Fushun, 11 Patentee before: CCTEG (China Coal Technology and Engineering Group Corp.) |
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