CN204327172U - Formula boring goaf extraction structure before and after high-rise position - Google Patents
Formula boring goaf extraction structure before and after high-rise position Download PDFInfo
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- CN204327172U CN204327172U CN201420601564.6U CN201420601564U CN204327172U CN 204327172 U CN204327172 U CN 204327172U CN 201420601564 U CN201420601564 U CN 201420601564U CN 204327172 U CN204327172 U CN 204327172U
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- 238000000605 extraction Methods 0.000 title claims abstract description 44
- 239000011435 rock Substances 0.000 claims abstract description 17
- 238000005553 drilling Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 8
- 238000005065 mining Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
The utility model relates to a kind of gas discharge in mine structure, is specially formula boring goaf extraction structure before and after a kind of high-rise position.Solve the problem reducing and adopt face upper corner, face gas concentration.Formula boring goaf extraction structure before and after a kind of high-rise position, comprise work plane, goaf, two air intake crossheadings of both sides, an air return way, and the horizontal river of contact between air return way and air intake crossheading, on the horizontal river of contact, middle part is connected with rock inclined gallery, and rock inclined gallery are the inclination angle of upwards 30 °, rock inclined gallery end connects extraction drill site, in extraction drill site, radially arrange some boring.Change the Flow Field Distribution situation that high concentration gas flows to lane space, make the gas density at upper corner place be down to less than 0.3%, thus solve higher slice fully-mechanized mining working upper corner and return airway gas exceeding limit problem.
Description
Technical field
The utility model relates to a kind of gas discharge in mine structure, is specially formula boring goaf extraction structure before and after a kind of high-rise position.
Background technology
In recent years, for effectively reducing the restriction of coal-face goaf gas to Safety of Coal Mine Production, each Coal Industry Group, mine and coal science research unit have carried out large quantity research to coal-face goaf gas Treatment process.Mainly take technological means to have: by increase goaf airtight intensity reduce goaf gas excessive, increase goaf gas drainage mode and method promotes goaf gas drainage efficiency.
Mainly reduce goaf gas from " shutoff " gas link by the technological means increasing the airtight intensity in goaf excessive, belong to goaf gas suppression technology, the basic goal of administering goaf gas can not be reached.Increase goaf gas drainage mode and method mainly administer goaf gas from " pump drainage " angle, are that goaf gas administers " basic method ", are also the main development directions of current mine goaf gas control simultaneously.
Colliery is in the fully-mechanized mining working exploitation process of upper strata, pouring out of goaf gas is the main cause causing upper corner and adopt face return airway gas high level, cause adopting face upper corner, face gas concentration is often in early warning critical condition, seriously constrain mine safety production.The method that my ore deposit adopts extraction means to administer goaf gas is with " extraction of wall pipe laying is closed in goaf ", " face goaf extraction drilling well ", " high drill holes extracting " Trinity goaf gas extraction technology.Reduction can be played by above three kinds of methods and adopt face upper corner, face gas concentration, but still there is series of problems, such as: 1, adopt airtight pipe laying to carry out goaf gas drainage, but be caving not exclusively by working face extraction goaf in early stage, the reason such as extraction limit, show as extraction concentration low, extraction negative pressure is not concentrated, and causes goaf gas drainage DeGrain; When 2, adopting ground extraction drilling well, draw out methane when goaf advances and discloses and exceed territory ground drilling covering concentration instability, in the trend of die-offing that rises sharply, after goaf is advanced beyond drilling well effective range, the gas density of ground drilling touches the bottom, and forces closedown drilling well; When 3, adopting high drill holes extracting, goaf gas drainage amount is lower, and drilling construction place disperses, and the construction period is longer, and is not easy to management and data observation.
Summary of the invention
The utility model, in order to solve the problem reducing and adopt face upper corner, face gas concentration, provides formula boring goaf extraction structure before and after a kind of high-rise position.
The technical solution of the utility model is, formula boring goaf extraction structure before and after a kind of high-rise position, comprise work plane, goaf, first air intake crossheading of both sides and the second air intake crossheading, an air return way, and the horizontal river of contact between air return way and the second air intake crossheading, on the horizontal river of contact, middle part is connected with rock inclined gallery, rock inclined gallery are the inclination angle of upwards 30 °, and rock inclined gallery end connects extraction drill site, in extraction drill site, radially arrange some boring.
Extraction drill site specification is: wide 4 meters, high 2.5 meters, long 6 meters, rock inclined gallery specification is: wide 2 meters, high 2.5 meters, long 26 meters.In extraction drill site, radially arrange totally 16 borings, perforate is highly 1.5 meters, and inclination angle is 3.31 ° ~ 8.4 °, drilling depth 54 ~ 138 meters, boring aperture is 94mm, and boring end connects releasing pipe and uses hole sealing device sealing of hole, and sealed borehole length is no less than 6 meters.Bore direction angle is 187 ° ~ 337 ° from left to right, and the average penetration degree of depth is 109.7 meters, and hole sealing device is cement injection and swelling agent mixt.Drilling orifice extraction negative pressure is not less than 5KPa.Before and after high-rise position formula boring control area width be fully-mechanized mining working direction within the scope of upper corner 50 meters, in order to adopt, face crossheading is high to be taken out before and after drill site within the scope of 300 meters control area length.
Compared with prior art, structure described in the utility model is that climbing construction takes out drill site apart from the height of 3# roof 12 meters in the horizontal river of fully-mechanized mining working air return way, and take out in drill site at height and arrange formula extraction borehole before and after high-rise position to roof of coal face region, after the advance of the face discloses boring one by one, produce negative pressure by connecting downhole extraction pipeline and carry out goaf gas extraction, change the Flow Field Distribution situation that high concentration gas flows to lane space, the gas density at upper corner place is made to be down to less than 0.3%, thus solve higher slice fully-mechanized mining working upper corner and return airway gas exceeding limit problem.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structure chart of rock inclined gallery;
In figure: 1-goaf, 2-first air intake crossheading, 3-work plane, 4-second air intake crossheading, 5-air return way, 6-get in touch with horizontal river, 7-rock inclined gallery, 8-extraction drill site, 9-coal seam.
Detailed description of the invention
As schematically shown in Figure 1, formula boring goaf extraction structure before and after a kind of high-rise position, comprise work plane 3, goaf 1, first air intake crossheading 2 of both sides and the second air intake crossheading 4, air return way 5, and the horizontal river 6 of contact between air return way 5 and the second air intake crossheading 4, on the horizontal river 6 of contact, middle part is connected with rock inclined gallery 7, rock inclined gallery 7 are the inclination angle of upwards 30 °, and rock inclined gallery 7 end connects extraction drill site 8, in extraction drill site, radially arrange some boring.
As schematically shown in Figure 2, extraction drill site 8 specification is: wide 4 meters, high 2.5 meters, long 6 meters, rock inclined gallery 7 specification is: wide 2 meters, high 2.5 meters, long 26 meters.
As schematically shown in Figure 1, in extraction drill site 8, radially arrange totally 16 borings, perforate is highly 1.5 meters, inclination angle is 3.31 ° ~ 8.4 °, drilling depth 54 ~ 138 meters, and boring aperture is 94mm, boring end connects releasing pipe and uses hole sealing device sealing of hole, and sealed borehole length is no less than 6 meters.Bore direction angle is 187 ° ~ 337 ° from left to right, and the average penetration degree of depth is 109.7 meters, and hole sealing device is cement injection and swelling agent mixt.
Technical scheme described in the utility model has the following advantages:
(1) formula high-rise position boring before and after layout in drill site is taken out at height, when taking out drill site position along with the advance of the face is paramount, front high-rise position boring discloses complete, take out the rear of constructing in advance in drill site high-rise position boring by exposure at height immediately and carry out goaf extraction, ensure that the continuity of whole stope goaf gas extraction.
(2) high-rise position, drill site rear drilling theary is after boring borehole bottom location all falls into goaf, just there will be high concentration gas, as long as but in fact formed and hole, can extraction adjacent layers gas, avoid adjacent layers gas to pour in goaf.
(3) by utilizing formula drilling-draining goaf gas before and after high-rise position, effectively can solve work plane just mash gas problem, top board high drainage roadway (High Position Drilling) can not play gas problem during gas drainage results, makes work plane can carry out goaf gas drainage at period of beginning mining.
(4) after all drilled hole falls into goaf, most of all boring concentration all remains on more than 80%, but along with the propelling of work plane, the boring concentration at middle part can reduce (concentration about 10%) gradually, and service time is not long.
(5) gas emission in goaf and accumulated amount are also limited, due to the continuous extraction of formula boring before and after high-rise position, the gas emission in goaf and accumulated amount can be made significantly to reduce, thus, also can reduce the Probability causing gas explosion accident due to goaf spoil inbreak.
(6) due to the existence of formula boring before and after high-rise position, an in line passage (boring is high negative pressure) is provided to goaf gas, and then change high concentration gas locates flowing Flow Field Distribution situation to stope and upper corner rear old man, avoid the place generation gas exceeding limit accidents such as the upper corner caused of gushing out due to goaf gas.
(7) before and after high-rise position, formula boring is arranged between two horizontal river, lane, and each boring is connected to airtight outside, even if after stope pushes through, be also convenient to management, monitor drilling gas extraction parameter at any time.
Claims (3)
1. formula boring goaf extraction structure before and after a high-rise position, it is characterized in that: comprise work plane (3), goaf (1), first air intake crossheading (2) of both sides and the second air intake crossheading (4), an air return way (5), and the horizontal river of contact (6) between air return way (5) and the second air intake crossheading (4), rock inclined gallery (7) are connected with at the upper middle part of the horizontal river of contact (6), rock inclined gallery (7) are the inclination angle of upwards 30 °, rock inclined gallery (7) end connects extraction drill site (8), in extraction drill site, radially arrange some boring.
2. formula boring goaf extraction structure before and after high-rise position according to claim 1, is characterized in that: extraction drill site (8) specification is: wide 4 meters, high 2.5 meters, long 6 meters, rock inclined gallery (7) specification is: wide 2 meters, high 2.5 meters, long 26 meters.
3. formula boring goaf extraction structure before and after high-rise position according to claim 1, it is characterized in that: in extraction drill site (8), radially arrange totally 16 borings, perforate is highly 1.5 meters, inclination angle is 3.31 ° ~ 8.4 °, drilling depth 54 ~ 138 meters, boring aperture is 94mm, and boring end connects releasing pipe and uses hole sealing device sealing of hole, and sealed borehole length is no less than 6 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420601564.6U CN204327172U (en) | 2014-10-17 | 2014-10-17 | Formula boring goaf extraction structure before and after high-rise position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420601564.6U CN204327172U (en) | 2014-10-17 | 2014-10-17 | Formula boring goaf extraction structure before and after high-rise position |
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| Publication Number | Publication Date |
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| CN204327172U true CN204327172U (en) | 2015-05-13 |
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| CN201420601564.6U Expired - Lifetime CN204327172U (en) | 2014-10-17 | 2014-10-17 | Formula boring goaf extraction structure before and after high-rise position |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240046A (en) * | 2015-11-02 | 2016-01-13 | 山西晋煤集团技术研究院有限责任公司 | Drill hole layout method for gas extraction during primary mining and stoping of large mining height fully-mechanized face |
| CN105971627A (en) * | 2016-06-29 | 2016-09-28 | 河南理工大学 | Anti-outburst and rapid tunneling method for mining roadways of large-dip-angle outburst coal seam |
| CN107701222A (en) * | 2017-10-09 | 2018-02-16 | 煤科集团沈阳研究院有限公司 | Between upper corner, tail support and accumulated methane mixing in goaf continues pumping method |
| CN109898992A (en) * | 2019-03-14 | 2019-06-18 | 安徽建筑大学 | It is a kind of that disaster-ridden source ore bed safe working method is administered using surface orientation drilling in advance |
-
2014
- 2014-10-17 CN CN201420601564.6U patent/CN204327172U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240046A (en) * | 2015-11-02 | 2016-01-13 | 山西晋煤集团技术研究院有限责任公司 | Drill hole layout method for gas extraction during primary mining and stoping of large mining height fully-mechanized face |
| CN105240046B (en) * | 2015-11-02 | 2017-05-10 | 山西晋煤集团技术研究院有限责任公司 | Drill hole layout method for gas extraction during primary mining and stoping of large mining height fully-mechanized face |
| CN105971627A (en) * | 2016-06-29 | 2016-09-28 | 河南理工大学 | Anti-outburst and rapid tunneling method for mining roadways of large-dip-angle outburst coal seam |
| CN105971627B (en) * | 2016-06-29 | 2017-12-08 | 河南理工大学 | A kind of projecting coal bed stope drift active workings protrusion-dispelling speedy drivage method of high inclination-angle |
| CN107701222A (en) * | 2017-10-09 | 2018-02-16 | 煤科集团沈阳研究院有限公司 | Between upper corner, tail support and accumulated methane mixing in goaf continues pumping method |
| CN107701222B (en) * | 2017-10-09 | 2019-04-12 | 煤科集团沈阳研究院有限公司 | Between upper corner, tail bracket and goaf accumulated methane mixes and continues pumping method |
| CN109898992A (en) * | 2019-03-14 | 2019-06-18 | 安徽建筑大学 | It is a kind of that disaster-ridden source ore bed safe working method is administered using surface orientation drilling in advance |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150513 |