CN103670499B - The method of comprehensive control face upper corner angle gas exceeding limit - Google Patents
The method of comprehensive control face upper corner angle gas exceeding limit Download PDFInfo
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- CN103670499B CN103670499B CN201310741205.0A CN201310741205A CN103670499B CN 103670499 B CN103670499 B CN 103670499B CN 201310741205 A CN201310741205 A CN 201310741205A CN 103670499 B CN103670499 B CN 103670499B
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000000605 extraction Methods 0.000 claims abstract description 34
- 238000010790 dilution Methods 0.000 claims abstract description 15
- 239000012895 dilution Substances 0.000 claims abstract description 15
- 238000005086 pumping Methods 0.000 claims description 10
- 238000005065 mining Methods 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 2
- 238000005422 blasting Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 18
- 239000003245 coal Substances 0.000 description 10
- 238000009825 accumulation Methods 0.000 description 8
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A kind of method that the invention discloses comprehensive control face upper corner angle gas exceeding limit, i.e. " extraction control leakage dilution caving ", including goaf gas being carried out the collaborative extraction extraction in point source, normally gushing out of goaf gas being carried out goaf air leaking control and Air return corner gas dilutes, means such as carrying out overhead caving of gushing out suddenly to goaf gas。Comprehensive control can normally and suddenly be gushed out by goaf gas the face-airing system gas exceeding limit caused, ensure the safe efficient production of mine。
Description
Technical field
The present invention relates to a kind of method that coal mine fully-mechanized mining (putting) face gas is administered, a kind of method particularly relating to comprehensive control face upper corner angle gas exceeding limit。
Background technology
It is that leaking out of goaf air flow collects ground that coal mine fully-mechanized mining (puts) Air return corner of work surface, and very easily forming methane accumulation transfinites。The main cause of Air return corner methane accumulation has:
The special construction of Air return corner causes that this place is easily formed vortex, and gas therein is difficult to be caused methane accumulation by distinguished and admirable taking away；Goaf gas is the main gas source of Air return corner methane accumulation, goaf gas is gushed out and is very easily caused methane accumulation, therefore the reason that goaf gas is gushed out also is often the reason causing Air return corner methane accumulation, and the reason of this respect mainly has: the outstanding rostellum of goaf air leaking, change of atmospheric pressure, goaf large area is so caving。
Transfinite for gas at upper corner, it is also proposed the major measure that some control face gas at upper corner transfinite both at home and abroad, but these measures not systems, and a lot of face upper corner angle gas exceeding limit phenomenons are still serious。
Prior art one:
Publication number is that CN102518464A name is called that the Chinese patent of a kind of method for extracting gas at corner on recovery working face in coal mine discloses a kind of method for extracting gas at corner on recovery working face in coal mine, comprises the following steps: A, predefined best extraction scope and drill site spacing；B, according to described drill site spacing, drill site is set；C, tilt upward from each drill site top to direction, goaf brill one main borehole, this main borehole arrives fissure zone from caving zone；D, at fissure zone, tilt upward from each main borehole to direction, goaf brill multiple branch holes, multiple branch holes of each main borehole be sector shape be arranged in described the best extraction within the scope of；E, each branch hole is connected with the extraction pipeline being used for drawing out methane。Application the inventive method, when position at the bottom of coal-face is advanced to hole, automatic inbreak due to roof, this coal-bed gas moves up, and adjacent coal seam is subject to mining influence and release, and gas pressure relief moves to mined bed, impact due to drilling-draining negative pressure, change gas moving direction, make gas be entered extraction pipeline by extraction, thus reducing the gas amount gushed out to upper corner。
Above-mentioned prior art one at least has the disadvantage in that
Simple by this means, extracting result is not good, and flow is little, gas density is low in order to hole for main manifestations。
Prior art two:
Publication number is that CN102562088A, name are called a kind of Chinese patent preventing gas from being accumulated at corners on coal faces, on the basis of former " U " type stope drift active workings, increase a technique lane, technique lane is placed in top, coal seam and inside return airway, parallel with return airway, air intake lane, air intake lane is connected with return airway, technique lane respectively by work surface, constitutes two " U " type ventilating ducts；Existing full exhaust ventilation in technique lane, is also provided with booster simultaneously and ventilates。Drill site is there also is provided, mash gas extraction, to coal-bed flooding or note resistanceization liquid in technique lane。The present invention, on the basis of original " U " type stope drift active workings, sets up a technique lane, constitutes double; two " U " type ventilation circuit, is tapped by the return air of former return airway, avoid gathering of return zone gas at upper corner；Drill site, this coal seam of extraction, adjacent layer and goaf gas can also be arranged in technique lane, or to coal-bed flooding or note resistanceization liquid, reach depositing dust and fireproof purpose, do not interfere with each other with production。
Above-mentioned prior art two at least has the disadvantage in that
Though adopting the gas exceeding limit that draft type administers stope to have certain effect, but the gas of target area can only be diluted, the impact in the goaf gas source causing Air return corner gas exceeding limit is inconspicuous, and the limited use which plays when face gas outburst amount is bigger。
Summary of the invention
It is an object of the invention to provide and a kind of can comprehensive control normally and suddenly be gushed out by goaf gas the method for comprehensive control face upper corner angle gas exceeding limit of the face-airing system gas exceeding limit caused。
It is an object of the invention to be achieved through the following technical solutions:
The method of the comprehensive control face upper corner angle gas exceeding limit of the present invention, including following means:
Goaf gas is carried out the collaborative extraction in point source；
Normally gushing out of goaf gas is carried out goaf air leaking control and the dilution of Air return corner gas；
Gushing out suddenly of goaf gas is carried out overhead caving。
As seen from the above technical solution provided by the invention, the method of the comprehensive control face upper corner angle gas exceeding limit that the embodiment of the present invention provides, owing to including goaf is carried out gas pumping, normally gushing out of goaf gas carried out goaf air leaking control and the dilution of Air return corner gas, means such as carrying out overhead caving of gushing out suddenly to goaf gas, comprehensive control can normally and suddenly be gushed out by goaf gas the face-airing system gas exceeding limit caused, ensure the safe efficient production of mine。
Accompanying drawing explanation
The principle schematic of the method for the comprehensive control face upper corner angle gas exceeding limit that Fig. 1 provides for the embodiment of the present invention。
Detailed description of the invention
The embodiment of the present invention will be described in further detail below。
The method of the comprehensive control face upper corner angle gas exceeding limit of the present invention, its preferably detailed description of the invention be:
Including following means:
Goaf gas is carried out the collaborative extraction in point source；
Normally gushing out of goaf gas is carried out goaf air leaking control and the dilution of Air return corner gas；
Gushing out suddenly of goaf gas is carried out overhead caving。
The described means that goaf carries out gas pumping include the collaborative goaf gas pumping method in point source, specifically include:
Arranging gas in oblique hole pumping and mining heat-radiation belt at tailentry, the whole hole of boring is in caving arch bottom；
Arrange gas in orthogonal hole pumping and mining suffocative zone in special return air tail lane, the whole hole of boring is in caving arch top。
The described means that goaf carries out gas pumping also include connection roadway pipe laying extraction and Air return corner intubates extraction。
The described method including adopting pneumatic fan to dispel and dilute Air return corner methane accumulation to the means carrying out goaf air leaking control and the dilution of Air return corner gas of normally gushing out of goaf gas, eliminates the methane accumulation of Air return corner。
Applicant is found by comprehensive face gas Emission Law of analyzing, and goaf gas is the main gas source of Air return corner gas exceeding limit。Goaf gas mode of gushing out has two kinds: normally gushes out and gushes out suddenly。The flow field characteristic that the former is mainly leaked out to return airway by goaf and Air return corner is special causes, it is cause Air return corner and the work surface main cause of gas exceeding limit within the scope of return airway, the latter is hanged top by goaf large area and is caving and causes, it is possible to cause work surface gas exceeding limit on a large scale。Additionally, large area roof weighting is it is also possible to destroy coal-cutting machinery, cause the accident of bump。For this feature, the present invention establishes a set of technical system, carrys out comprehensive control and normally and is suddenly gushed out by goaf gas the face-airing system gas exceeding limit caused, and ensures the safe efficient production of mine。
Specific embodiment:
As shown in Figure 1, gush out feature for work surface goaf gas, propose to set up with goaf gas extraction technology for core, it is aided with goaf air leaking control, the dilution of Air return corner gas and the goaf gas of overhead caving to gush out process for comprehensively treating system, sum up and be " extraction control leakage dilution caving ": " extraction " i.e. goaf gas extraction, is the core of whole technical system；" control leakage " i.e. goaf air leaking controls；" dilution " i.e. Air return corner gas dilutes；" caving " i.e. overhead caving。
Concrete means have:
1) source is divided to work in coordination with goaf gas extraction technology:
The collaborative extraction in so-called point source is to arrange gas in oblique hole pumping and mining heat-radiation belt at tailentry, for promoting the interception result to goaf gas, by whole for boring hole in caving arch bottom；Arrange gas in orthogonal hole pumping and mining suffocative zone in special return air tail lane, the whole hole of boring is in caving arch top。Meanwhile, in order to reach good extracting result, being aided with contact boat pipe laying and the extraction means that intubate of goaf, the method is not only able to effectively administer gas at upper corner, additionally it is possible to prevent Study on Protection of Spontaneous Combustion, it is achieved that the purpose that coal and gas are controlled altogether。
2) gas at upper corner comprehensive control normally gushes out gas and gas of gushing out suddenly is controlled altogether
Achieve and normally gush out gas and purpose that gas of gushing out suddenly is controlled altogether；By " extraction " i.e. goaf gas extraction, " control leakage " i.e. goaf air leaking controls, and " dilution " i.e. Air return corner gas dilutes, and gas of normally gushing out has been administered；By " caving " i.e. overhead caving, gas of gushing out suddenly is administered。
The method of the comprehensive control face upper corner angle gas exceeding limit of the present invention, effectively prevent the gas in goaf and gushes out to work surface, reduce work surface distinguished and admirable in gas density, ensured safety in production, improve coal production that there is obvious economic benefit。
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope of present disclosure; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention。Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims。
Claims (1)
1. the method for a comprehensive control face upper corner angle gas exceeding limit, it is characterised in that include following means:
Goaf gas is carried out the collaborative extraction in point source；
Normally gushing out of goaf gas is carried out goaf air leaking control and the dilution of Air return corner gas；
Gushing out suddenly of goaf gas is carried out overhead caving；
Described goaf gas is carried out the collaborative extraction in point source include return airway oblique elevation bore extraction, the orthogonal elevation bore extraction in tail lane, namely gas in oblique hole pumping and mining heat-radiation belt is arranged at tailentry, by whole for boring hole in caving arch bottom, gas in orthogonal hole pumping and mining suffocative zone is arranged in special return air tail lane, the whole hole of boring is in caving arch top, meanwhile, connection roadway pipe laying it is aided with and extraction means that goaf intubates；
The method is set up with goaf gas extraction technology for core, is aided with goaf air leaking control, the dilution of Air return corner gas and the goaf gas of overhead caving and gushes out process for comprehensively treating system, i.e. the extraction control leakage dilution comprehensive gas control technology system of caving；Namely described extraction comprehensively utilizes that extraction is worked in coordination with in described point source, connection roadway pipe laying, Air return corner intubate extraction goaf gas；Namely described control leakage utilizes all pressure controlling measurement goaf air leakings；Described dilution is namely by pneumatic fan, air curtain collection gas blower fan dilution Air return corner gas；Namely described caving utilizes high-pressure hydraulic fracturing to weaken method, hydraulic blasting fracturing reduction method overhead caving controls to gush out suddenly the work surface gas exceeding limit on a large scale caused；
The method normally gushes out gas by gas at upper corner comprehensive control and gas of gushing out suddenly is controlled altogether:
The method is controlled by goaf gas extraction, goaf air leaking, gas of normally gushing out is administered by the dilution of Air return corner gas, by overhead caving, gas of gushing out suddenly is administered。
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| CN201310741205.0A CN103670499B (en) | 2013-12-27 | 2013-12-27 | The method of comprehensive control face upper corner angle gas exceeding limit |
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| CN201310741205.0A CN103670499B (en) | 2013-12-27 | 2013-12-27 | The method of comprehensive control face upper corner angle gas exceeding limit |
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| CN103670499A CN103670499A (en) | 2014-03-26 |
| CN103670499B true CN103670499B (en) | 2016-06-22 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110821552B (en) * | 2019-11-22 | 2022-02-18 | 安徽理工大学 | Near-horizontal thick coal seam mining gas and coal spontaneous combustion comprehensive treatment method |
| CN111577282A (en) * | 2020-05-26 | 2020-08-25 | 内蒙古福城矿业有限公司 | High-low negative pressure separate source coal mine gas drainage process |
| CN112127941B (en) * | 2020-09-27 | 2023-04-07 | 山西鑫桥科技有限公司 | Method for solving coal seam gas outburst |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2366816C2 (en) * | 2005-03-21 | 2009-09-10 | Павел Геннадьевич Полевщиков | Complex gas emission control method used when preparing and extracting high gas-bearing coal beds |
| CN102392679A (en) * | 2011-11-21 | 2012-03-28 | 大同煤矿集团有限责任公司 | Comprehensive and integrative gas drainage method |
| CN102748064A (en) * | 2012-07-19 | 2012-10-24 | 大同煤矿集团有限责任公司 | Large-mining-height fully-mechanized caving face gas control method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2366816C2 (en) * | 2005-03-21 | 2009-09-10 | Павел Геннадьевич Полевщиков | Complex gas emission control method used when preparing and extracting high gas-bearing coal beds |
| CN102392679A (en) * | 2011-11-21 | 2012-03-28 | 大同煤矿集团有限责任公司 | Comprehensive and integrative gas drainage method |
| CN102748064A (en) * | 2012-07-19 | 2012-10-24 | 大同煤矿集团有限责任公司 | Large-mining-height fully-mechanized caving face gas control method |
Non-Patent Citations (3)
| Title |
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| 低瓦斯矿井U型通风采煤工作面瓦斯综合治理;李文明;《山西焦煤科技》;20111031(第10期);全文 * |
| 孔庄矿综放面上隅角瓦斯积聚的治理技术;常月芹;《节能与环保》;20111231(第01期);第69页第3节 * |
| 致密围岩煤与瓦斯突出单一煤层瓦斯防治技术应用;吴满仓;《科技信息》;20091231(第5期);第366页第2.2.1-2.2.3节，图3 * |
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