CN105626134A - Local area closed dust prevention and control method for fully mechanized coal mining working faces - Google Patents

Local area closed dust prevention and control method for fully mechanized coal mining working faces Download PDF

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Publication number
CN105626134A
CN105626134A CN201610125229.7A CN201610125229A CN105626134A CN 105626134 A CN105626134 A CN 105626134A CN 201610125229 A CN201610125229 A CN 201610125229A CN 105626134 A CN105626134 A CN 105626134A
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China
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dust
hydraulic support
coal
coal mining
single water
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CN201610125229.7A
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CN105626134B (en
Inventor
周刚
徐翠翠
王昊
薛娇
程卫民
聂文
孙彪
张琦
徐茂
邱晗
范韬
陈聪
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • E21F5/04Spraying barriers

Abstract

The invention discloses a local area closed dust prevention and control method for fully mechanized coal mining working faces. The local area closed dust prevention and control method includes steps of gathering cutting dust produced by drums by the aid of fog drop formed by air and water nozzles on rocker arms of coal mining machines and the upper end surfaces of machine bodies, respectively forming dust obstructing air curtains above and below the rocker arms of the coal mining machines and above the machine bodies and obstructing dust particles in closed spaces formed by the coal mining machines, the dust obstructing air curtains and coal walls; extending exhaust openings of extraction type air ducts into the closed spaces, efficiently extracting the high-concentration dust closed in the spaces and purifying the high-concentration dust. The dust particles are not gathered by the fog drop. The local area closed dust prevention and control method has the advantages that coal mining machine position sensing mechanisms and hydraulic support action sensing mechanisms are arranged on hydraulic supports, the cutting and frame shifting dust produced by the coal mining machines can be gathered by the aid of the coal mining machine position sensing mechanisms and the hydraulic support action sensing mechanisms via Venturi nozzle groups and single-water and wind and water nozzle groups, accordingly, the dust can be prevented from being dissipated to other operation areas, or the high-concentration dust can be obstructed outside the closed spaces, and the dust fall efficiency can be improved by 95% at least in cutting and frame shifting procedures of the coal mining machines.

Description

A kind of closed dust prevention and control method of regional area for fully-mechanized mining working
Technical field
The present invention relates to a kind of Mine Dust prevention and controls, particularly relate to a kind of closed dust prevention and control method of regional area for fully-mechanized mining working.
Background technology
Coal, as the main energy sources of China, accounts for about the 70% of primary energy source production and consumption, is the important leverage realizing Economic Sustainable Development of China. But, progress of coal mining can produce a large amount of dust, survey factually, when not taking any dust prevention, the dust concentration of Mechanized can reach 2500��3000mg/m3, high density dust not only can cause occupational illness, also can cause mine dust explosion hazard, drastically influence the safety and high efficiency of mine.
At present, for Mechanized high density dust hazard, the main prophylactico-therapeutic measures taked has coal-bed flooding, ventilation dirt, atomizing de-dusting, wet type to catch dirt, individual protection, physical chemistry dust suppression etc., but fully mechanized coal face is open production space, coalcutter cuts to cut and produces dirt and hydraulic support action and produce dirt and be easy to diffuse to whole operation space along with distinguished and admirable, above-mentioned dust prevention all can only reduce fully-mechanized mining working dust concentration to a certain extent, and fully mechanized coal face high density dust pollution question is still very serious.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of closed dust prevention and control method of regional area for fully-mechanized mining working, to improve fully-mechanized mining working control efficiency of dust collection.
For solving the problems of the technologies described above, the present invention program comprises:
For the closed dust prevention and control method of regional area of fully-mechanized mining working, it comprises the following steps:
First geomantic omen set of nozzles of rocker arm of coal mining machine and fuselage upper surface utilizes atomization droplet trapping cylinder to cut the dust of coal cutting body generation, respectively form one resistance dirt gas curtain at rocker arm of coal mining machine upper and lower and body upper simultaneously, the grit failing to be caught by droplet is intercepted in the enclosed space that coalcutter, resistance dirt gas curtain and rib are formed; Stretch in above-mentioned enclosed space by the air suction inlet of pull-out type air duct, efficiently extract the high density dust being enclosed in this enclosed space out purification.
Described closed dust prevention and control method, wherein, concrete also the comprising of above-mentioned steps: be provided with the first geomantic omen set of nozzles on upper and lower and end cambered surface and coalcutter fuselage upper surface at rocker arm of coal mining machine, is provided with pull-out type dedusting fan at coalcutter fuselage left and right end face and at coalcutter fuselage, side end face, worked-out section one is provided with spray lance; Coalcutter fuselage, by arranging many single water spouting nozzles of group first on the spray lance of side end face, worked-out section one, is caught by a small amount of dust granules escaped out in above-mentioned enclosed space further for the formation of droplet.
Described closed dust prevention and control method, wherein, concrete also the comprising of above-mentioned steps: every platform hydraulic support front canopy is provided with coal seat in the plane and puts induction mechanism and Venturi group; Every platform hydraulic support top beam and caving shield top are provided with the 3rd single water spouting nozzle group; Every platform hydraulic bracket side guard plate is provided with the 2nd single water spouting nozzle group; Every platform hydraulic support top beam and caving shield are provided with hydraulic support action induction mechanism and many groups the 2nd geomantic omen set of nozzles; Venturi group is parallel to hydraulic support width and forms an angle with rib and install in hydraulic support front canopy place, when the coal seat in the plane of front canopy put induction mechanism detect the coalcutter sailed into time, the Venturi group that induction mechanism instruction spray solenoid valve opens some hydraulic supports of coalcutter windward and downwind side automatically is put in coal seat in the plane, and opens the 3rd single water spouting nozzle group at support back timber and caving shield top simultaneously; 3rd single water spouting nozzle group at back timber and caving shield top can soak coal body, venturi spray group can efficiently trap to cut cuts product dirt, rolling away from after this region certain distance until coal machine, coal machine induction mechanism indicates the 3rd single water spouting nozzle group at closed electromagnetic valve Venturi group and support back timber, caving shield top automatically.
Described closed dust prevention and control method, wherein, concrete also the comprising of above-mentioned steps: when detecting hydraulic support and carry out falling post work, the 2nd single water spouting nozzle group being parallel to tunnel top board being arranged in hydraulic bracket side guard plate opened by hydraulic support action induction mechanism instruction magnetic valve, 2nd single water spouting nozzle group is also sprayed along horizontal direction, water curtain is formed in space between two bracket side backplates, frame dust fall will be fallen be blocked in this horizontal mist field upper space and catch sedimentation, and avoid its loss to downwind side space; When detecting hydraulic support and carry out moving frame work, many groups of the 2nd geomantic omen set of nozzles being arranged on hydraulic support top beam and caving shield opened by hydraulic support action induction mechanism instruction magnetic valve, spraying droplet trapping is utilized to cut to cut to produce dirt and move frame and produce while dirt grit, the two curtain enclosed space of air water can be formed at the walkway place of hydraulic support, will cut and cut and move frame product dirt and be blocked in enclosed space outside; When detect hydraulic support carry out setting prop work time, hydraulic support action induction mechanism instruction magnetic valve again the 2nd single water spouting nozzle group on opening side backplate spray.
Described closed dust prevention and control method, wherein, concrete also the comprising of above-mentioned steps: be provided with curtain rolling shaft on hydraulic support top beam, curtain rolling shaft is installed on the Dust collecting net covering hydraulic support lower space tunneling boring, Dust collecting net is provided with counterweight bar, the lower section of curtain rolling shaft is provided with spray lance, and spray lance has been evenly arranged multiple Dust collecting net nozzle, and Dust collecting net nozzle and wind direction are in 45�� angle against the wind.
Described closed dust prevention and control method, wherein, concrete also the comprising of above-mentioned steps: first, second geomantic omen set of nozzles all adopts internal-mixing geomantic omen nozzle; First single water spouting nozzle all adopts containing the X hybrid nozzle of shape Water conservancy diversion core; 2nd single water spouting nozzle group all adopts conical flow guiding groove simple nozzle; 3rd single water spouting nozzle group all adopts slant reflection conical flow guiding groove simple nozzle.
A kind of closed dust prevention and control method of regional area for fully-mechanized mining working provided by the invention, by coalcutter region sealed preventing dust equipment and method, hydraulic support region sealed preventing dust equipment and method, different sorts nozzle is utilized to form the two curtain enclosed space of air water or single mist field enclosed space, high density dust is concentrated in enclosed space and focuses on, avoid outside dust is blocked in enclosed space to other operating area loss or by high density dust, avoid dust pollution enclosed space inside processing environment; Utilize atomizing de-dusting, closed every dirt, dirt purifies the mode combined with taking out, coalcutter is cut and cuts, move dustfall efficiency in frame process and bring up to more than 95%, considerably reduce the dust concentration of coal mine fully-mechanized mining working, both avoided and coal dust explosion accident had occurred, substantially improved again the operating environment of workman.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of coalcutter region sealed preventing dust equipment and method in the present invention;
Fig. 2 is the front elevational schematic of hydraulic support region sealed preventing dust equipment and method in the present invention;
Fig. 3 is the schematic top plan view of hydraulic support region sealed preventing dust equipment and method in the present invention;
Fig. 4 is the schematic diagram of the closed Dust collecting net dedusting in hydraulic support region in the present invention;
Wherein, 1-rocker arm of coal mining machine; 2-first geomantic omen set of nozzles; 3-coalcutter fuselage; 4-pull-out type dedusting fan; 5-spray lance; 6-cylinder; 7-pull-out type air duct; The single water spouting nozzle group of 8-first; 9-front canopy; Induction mechanism is put in 10-coal seat in the plane; 11-Venturi group; 12-back timber; 13-caving shield; 14-side guard plate; 15-support action induction mechanism; 16-curtain rolling shaft; 17-Dust collecting net; 18-counterweight bar; 19-Dust collecting net nozzle; The single water spouting nozzle group of 20-the 3rd; The single water spouting nozzle group of 21-the 2nd; 22-the 2nd geomantic omen set of nozzles.
Embodiment
The present invention provides a kind of closed dust prevention and control method of regional area for fully-mechanized mining working, and for making the object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below. It is to be understood that specific embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
The present invention provides a kind of closed dust prevention and control method of regional area for fully-mechanized mining working, as shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 4, it comprises the following steps: the first geomantic omen set of nozzles 2 of rocker arm of coal mining machine 1 and coalcutter fuselage 3 upper surface utilizes the dust of atomization droplet trapping cylinder 6 sections of coal cutting bodies generations, above rocker arm of coal mining machine 1 upper and lower and coalcutter fuselage 3, each formation hinders dirt gas curtain together simultaneously, is intercepted by the grit failing to be caught by droplet in the enclosed space that coalcutter, resistance dirt gas curtain and rib are formed; Stretch in above-mentioned enclosed space by the air suction inlet of pull-out type air duct 7, efficiently extract the high density dust being enclosed in this enclosed space out purification by pull-out type dedusting fan 4.
More specifically as follows:
As shown in Figure 1, at rocker arm of coal mining machine 1, upper and lower and end cambered surface and coalcutter fuselage 3 upper surface are provided with the first geomantic omen set of nozzles 2, it are provided with pull-out type dedusting fan 4 at coalcutter fuselage about 3 end face and at coalcutter fuselage 3, side end face, worked-out section one are provided with spray lance 5; Coalcutter fuselage 3, by arranging many single water spouting nozzles 8 of group first on the spray lance 5 of side end face, worked-out section one, is caught by a small amount of dust granules escaped out in above-mentioned enclosed space further for the formation of droplet.
As shown in Figure 2, every platform hydraulic support front canopy 9 is provided with coal seat in the plane and puts induction mechanism 10 and Venturi group 11; Every platform hydraulic support top beam 12 and caving shield 13 top are provided with the 3rd single water spouting nozzle group 20; Every platform hydraulic bracket side guard plate 14 is provided with the 2nd single water spouting nozzle group 21; Every platform hydraulic support top beam 12 and caving shield 13 are provided with hydraulic support action induction mechanism 15 and many groups the 2nd geomantic omen set of nozzles 22; Venturi group 11 is parallel to hydraulic support width and forms an angle with rib and install in hydraulic support front canopy 9 place, and certain angle at this place is generally 120 ��-150 ��. When the coal seat in the plane of front canopy 9 put induction mechanism 10 detect the coalcutter sailed into time, coal seat in the plane is put induction mechanism 10 and is indicated spray solenoid valve automatically to open the Venturi group 11 of some hydraulic supports of coalcutter windward and downwind side, and opens the 3rd single water spouting nozzle group 20 at support back timber 12 and caving shield 13 top simultaneously; 3rd single water spouting nozzle group 20 at back timber 12 and caving shield 13 top can soak coal body, reach maximum degree and reduce the object producing dirt, venturi spray group 11 can efficiently trap to cut cuts product dirt, rolling away from after this region certain distance until coal machine, coal machine induction mechanism 15 indicates the 3rd single water spouting nozzle group 20 at closed electromagnetic valve Venturi group 11 and support back timber 12, caving shield 13 top automatically.
Further, as shown in Figure 3, when detecting hydraulic support and carry out falling post work, hydraulic support action induction mechanism 15 indicates magnetic valve to open the 2nd single water spouting nozzle group 21 being parallel to tunnel top board being arranged in hydraulic bracket side guard plate 14,2nd single water spouting nozzle group 21 is also sprayed along horizontal direction, form water curtain in space between two bracket side backplates 14, frame dust fall will be fallen and be blocked in this horizontal mist field upper space and catch sedimentation, and avoid its loss to downwind side space; When detecting hydraulic support and carry out moving frame work, hydraulic support action induction mechanism 15 indicates magnetic valve to open many groups of the 2nd geomantic omen set of nozzles 22 being arranged on hydraulic support top beam 12 and caving shield 13, spraying droplet trapping is utilized to cut to cut to produce dirt and move frame and produce while dirt grit, the two curtain enclosed space of air water can be formed at the walkway place of hydraulic support, will cut and cut and move frame product dirt and be blocked in enclosed space outside; When detect hydraulic support carry out setting prop work time, hydraulic support action induction mechanism 15 indicate magnetic valve again the 2nd single water spouting nozzle group 21 on opening side backplate 14 spray.
And as shown in Figure 4, hydraulic support top beam 12 is provided with curtain rolling shaft 16, curtain rolling shaft 16 is installed on the Dust collecting net 17 covering hydraulic support lower space tunneling boring, Dust collecting net 17 is provided with counterweight bar 18, the lower section of curtain rolling shaft 16 is provided with spray lance, being evenly arranged multiple Dust collecting net nozzle 19 on spray lance, Dust collecting net nozzle 19 and wind direction are in 45�� angle against the wind.
And first, second geomantic omen set of nozzles all adopts internal-mixing geomantic omen nozzle; First single water spouting nozzle all adopts containing the X hybrid nozzle of shape Water conservancy diversion core; 2nd single water spouting nozzle group all adopts conical flow guiding groove simple nozzle; 3rd single water spouting nozzle group all adopts slant reflection conical flow guiding groove simple nozzle, utilizes different sorts nozzle to form the two curtain enclosed space of air water or single mist field enclosed space, is concentrated in enclosed space by high density dust and focus on.
Certainly; the better embodiment being only the present invention is more than described; the present invention is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this specification sheets; all equivalent replacement, the obviously variant made, all drops within the essential scope of this specification sheets, ought to be subject to the protection of the present invention.

Claims (6)

1., for the closed dust prevention and control method of regional area of fully-mechanized mining working, it comprises the following steps:
The geomantic omen set of nozzles of rocker arm of coal mining machine and fuselage upper surface utilizes atomization droplet trapping cylinder to cut the dust of coal cutting body generation, respectively form one resistance dirt gas curtain at rocker arm of coal mining machine upper and lower and body upper simultaneously, the grit failing to be caught by droplet is intercepted in the enclosed space that coalcutter, resistance dirt gas curtain and rib are formed; Stretch in above-mentioned enclosed space by the air suction inlet of pull-out type air duct, efficiently extract the high density dust being enclosed in this enclosed space out purification.
2. closed dust prevention and control method according to claim 1, it is characterized in that, concrete also the comprising of above-mentioned steps: be provided with the first geomantic omen set of nozzles on upper and lower and end cambered surface and coalcutter fuselage upper surface at rocker arm of coal mining machine, is provided with pull-out type dedusting fan at coalcutter fuselage left and right end face and at coalcutter fuselage, side end face, worked-out section one is provided with spray lance; Coalcutter fuselage, by arranging many single water spouting nozzles of group first on the spray lance of side end face, worked-out section one, is caught by a small amount of dust granules escaped out in above-mentioned enclosed space further for the formation of droplet.
3. closed dust prevention and control method according to claim 2, it is characterised in that, concrete also the comprising of above-mentioned steps: every platform hydraulic support front canopy is provided with coal seat in the plane and puts induction mechanism and Venturi group; Every platform hydraulic support top beam and caving shield top are provided with the 3rd single water spouting nozzle group; Every platform hydraulic bracket side guard plate is provided with the 2nd single water spouting nozzle group; Every platform hydraulic support top beam and caving shield are provided with hydraulic support action induction mechanism and many groups the 2nd geomantic omen set of nozzles; Venturi group is parallel to hydraulic support width and forms an angle with rib and install in hydraulic support front canopy place, when the coal seat in the plane of front canopy put induction mechanism detect the coalcutter sailed into time, the Venturi group that induction mechanism instruction spray solenoid valve opens some hydraulic supports of coalcutter windward and downwind side automatically is put in coal seat in the plane, and opens the 3rd single water spouting nozzle group at support back timber and caving shield top simultaneously; 3rd single water spouting nozzle group at back timber and caving shield top can soak coal body, venturi spray group can efficiently trap to cut cuts product dirt, rolling away from after this region certain distance until coal machine, coal machine induction mechanism indicates the 3rd single water spouting nozzle group at closed electromagnetic valve Venturi group and support back timber, caving shield top automatically.
4. closed dust prevention and control method according to claim 3, it is characterized in that, concrete also the comprising of above-mentioned steps: when detecting hydraulic support and carry out falling post work, the 2nd single water spouting nozzle group being parallel to tunnel top board being arranged in hydraulic bracket side guard plate opened by hydraulic support action induction mechanism instruction magnetic valve, 2nd single water spouting nozzle group is also sprayed along horizontal direction, water curtain is formed in space between two bracket side backplates, frame dust fall will be fallen be blocked in this horizontal mist field upper space and catch sedimentation, and avoid its loss to downwind side space; When detecting hydraulic support and carry out moving frame work, many groups of the 2nd geomantic omen set of nozzles being arranged on hydraulic support top beam and caving shield opened by hydraulic support action induction mechanism instruction magnetic valve, spraying droplet trapping is utilized to cut to cut to produce dirt and move frame and produce while dirt grit, the two curtain enclosed space of air water can be formed at the walkway place of hydraulic support, will cut and cut and move frame product dirt and be blocked in enclosed space outside; When detect hydraulic support carry out setting prop work time, hydraulic support action induction mechanism instruction magnetic valve again the 2nd single water spouting nozzle group on opening side backplate spray.
5. closed dust prevention and control method according to claim 3, it is characterized in that, concrete also the comprising of above-mentioned steps: be provided with curtain rolling shaft on hydraulic support top beam, curtain rolling shaft is installed on the Dust collecting net covering hydraulic support lower space tunneling boring, Dust collecting net is provided with counterweight bar, the lower section of curtain rolling shaft is provided with spray lance, and spray lance has been evenly arranged multiple Dust collecting net nozzle, and Dust collecting net nozzle and wind direction are in 45�� angle against the wind.
6. closed dust prevention and control method according to claim 3, it is characterised in that, concrete also the comprising of above-mentioned steps: first, second geomantic omen set of nozzles all adopts internal-mixing geomantic omen nozzle; First single water spouting nozzle all adopts containing the X hybrid nozzle of shape Water conservancy diversion core; 2nd single water spouting nozzle group all adopts conical flow guiding groove simple nozzle; 3rd single water spouting nozzle group all adopts slant reflection conical flow guiding groove simple nozzle.
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CN108757004A (en) * 2018-05-14 2018-11-06 中煤科工集团重庆研究院有限公司 Automatic hydraulic holder moves frame dust-extraction unit
CN109162752A (en) * 2018-11-06 2019-01-08 中煤科工集团重庆研究院有限公司 Coal mine large-mining high comprehensive mining working face shifting frame closes dirt and leads dirt device
CN110056350A (en) * 2019-04-24 2019-07-26 山东科技大学 Fully-mechanized mining working absorption-induced convection formula control dedusting wind veil device and method
WO2020006816A1 (en) * 2018-07-02 2020-01-09 山东科技大学 Three-dimensional space dust control and removal method used for dust produced during bracket motion of fully mechanized mining face
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CN108506030A (en) * 2018-02-23 2018-09-07 中国神华能源股份有限公司 A kind of distribution method of hydraulic support and the purification wall in groundwater reservoir
CN108757004A (en) * 2018-05-14 2018-11-06 中煤科工集团重庆研究院有限公司 Automatic hydraulic holder moves frame dust-extraction unit
WO2020006816A1 (en) * 2018-07-02 2020-01-09 山东科技大学 Three-dimensional space dust control and removal method used for dust produced during bracket motion of fully mechanized mining face
WO2020006815A1 (en) * 2018-07-02 2020-01-09 山东科技大学 Dust isolation and dust settling method and dust isolation and dust settling system for dust production due to cutting of coal mining machine
AU2018431165B2 (en) * 2018-07-02 2022-03-17 Shandong University Of Science And Technology Three-dimensional space dust control and removal method used for dust produced during bracket motion of fully mechanized mining face
CN109162752A (en) * 2018-11-06 2019-01-08 中煤科工集团重庆研究院有限公司 Coal mine large-mining high comprehensive mining working face shifting frame closes dirt and leads dirt device
US11028693B2 (en) 2019-04-24 2021-06-08 Shandong University Of Science And Technology Absorption-induction convectional dust-controlling/removing air/fog curtain device of fully-mechanized working face and method thereof
CN110056350A (en) * 2019-04-24 2019-07-26 山东科技大学 Fully-mechanized mining working absorption-induced convection formula control dedusting wind veil device and method
WO2020215478A1 (en) * 2019-04-24 2020-10-29 山东科技大学 Air-and-spray curtain device and method for controlling and removing dust for fully mechanized mining working face through suction, induction and convection
CN111173509A (en) * 2020-01-20 2020-05-19 北京中矿兴宝环保科技有限公司 Method for preventing and treating coal dust from caving in large mining height
WO2021227238A1 (en) * 2020-05-28 2021-11-18 安徽理工大学 Gas-liquid spraying and dust suppression system for fully mechanized mining face
CN111927522A (en) * 2020-08-19 2020-11-13 安徽理工大学 Be used for colliery to combine and adopt face hydraulic support physics to catch dirt device
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