CN109026126A - A kind of coal mining machine in full-mechanized mining face contrary wind coal cutting dust comprehensive processing method - Google Patents
A kind of coal mining machine in full-mechanized mining face contrary wind coal cutting dust comprehensive processing method Download PDFInfo
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- CN109026126A CN109026126A CN201811107811.6A CN201811107811A CN109026126A CN 109026126 A CN109026126 A CN 109026126A CN 201811107811 A CN201811107811 A CN 201811107811A CN 109026126 A CN109026126 A CN 109026126A
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- dust
- coal
- spraying device
- coalcutter
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
- E21C35/223—Equipment associated with mining machines for sucking dust-laden air from the cutting area, with or without cleaning of the air
Abstract
The invention discloses a kind of coal mining machine in full-mechanized mining face contrary wind coal cutting dust comprehensive processing methods.The broken coal body for quickly moistening coalcutter front and back roller first with the first spraying device and its being nearby caving；The dust for recycling dust-break curtain, the second spraying device, the guidance of third spraying device to fly upward is migrated downwards along coal wall side；The high concentration dust-contained airflow for recycling the 4th spraying device and the 5th spraying device that high-efficient purification is concentrated to be directed to the migration of coal wall side；Finally the 6th spraying device is recycled to settle to dust is escaped out.Total dust dustfall efficiency reaches 90% or more, and respirable dust dustfall efficiency reaches 85% or more, finally realizes effective improvement of the coalcutter contrary wind coal cutting in the process to dust.
Description
Technical field
The present invention relates to a kind of Mine Dust administering method, in particular to a kind of coal mining machine in full-mechanized mining face contrary wind coal cutting produces
Dirt comprehensive processing method.
Background technique
It is current fully-mechanized mining working treating flour dust that roller cutting and coal body, which are caving impact dust, when coalcutter contrary wind coal cutting
Key points and difficulties.Windward roller, which cuts top coal, during coalcutter contrary wind coal cutting causes its front region to be caving impact dust very
Seriously, it will form the dust-contained airflow of high concentration under the action of distinguished and admirable and migrate to rocker arm position rapidly, be then raised again
Rocker arm climbs over cable trough after stopping, and finally diffuses and diffuses to pavement side, causes coalcutter driver and its leeward operating area
Interior dust concentration seriously threatens mine safety production and the physical and mental health of operating personnel considerably beyond national relevant regulations.
Especially for the high dust intensity coal mine for being up to 80% or more in China's accounting, the occupational hazards of dust is then more prominent.It is so-called
High dust intensity coal mine refers to the part mine for having the characteristics that high-yield and high-efficiency, coal seam physicochemical property are special, wherein high-yield and high-efficiency
It is mainly manifested in that mine yield is high, excavated technology is advanced, mechanization degree is high, digging speed is fast；Coal seam physicochemical property Special Main
Show that working seam is thicker, original moisture content is low, porosity is low, poor permeability, wettability is poor, solid coefficient is low.
Generally in several hundred mg/m3 or more, some are even reached original total dust concentration at high dust intensity coal mine fully-mechanized mining working driver
To 2000 ~ 5000 mg/m3 or more, operating environment is extremely severe, it would be highly desirable to effectively be administered.
The current technology type for coal mining machine in full-mechanized mining face coal cutting treating flour dust is more and substantially to arrange by spraying
It mainly include being sprayed for the secondary spray of negative pressure dust-settling technology of coal mining machine roller coal cutting dust, coalcutter dust source tracking based on applying
Mist dust-settling technology and the dust-contained airflow that broken coal body is caving impact dust at windward roller are sprayed control technology and are directed to
Distinguished and admirable negative pressure-induced dedusting technology under coalcutter.Wherein, secondary dust removal with negative pressure technology is to utilize to be installed on rocker arm of coal mining machine root
Two groups of high-pressure fogs in portion realize the purpose of depositing dust to moisten front and back roller, in general low wind speed (being less than 2.0m/s), mining height
80% or more dust-laying effect can be obtained in the fully mechanized coal face of 2.0m or so, but in some high wind speeds (being greater than 3.0m/s), high working face
The fully mechanized coal face of (being greater than 3.0m) is influenced due to spraying by contrary wind, and dustfall efficiency only has 40%~50% or so.Coalcutter dirt source
Tracking atomizing de-dusting technology is that roller realizes drop before and after covering coalcutter using the multiple groups high-pressure fog for being mounted on cradle top
The purpose of dirt, it efficiently solves the problems, such as that high wind speed coal working face cannot effectively cover roller against the wind by spraying, simultaneously also
Realization follows coalcutter to open and close automatically by spraying, the degree of automation of dust-proof equipment is significantly improved, with coalcutter two
Secondary spray of negative pressure dust-settling technology matches, and can form the control dirt water curtain of " solid " formula at roller, and dustfall efficiency can reach 70% ~
80% or so.Coalcutter dust-contained airflow control technology is then to utilize to be arranged at coalcutter windward roller and on coalcutter fuselage
The spraying high concentration dust-contained airflow guidance that impact formation will be caving at windward roller of injection moves multiple groups high pressure against coal wall with the wind,
To avoid dust recycling to pavement side, the dustfall efficiency of general this of the fully-mechanized mining working technology of dust intensity can also
Reach 80% or so, but for high dust intensity coal mine, can not fully stop dust-contained airflow to working face pavement one by spraying
Side diffusion, dustfall efficiency is only 60% ~ 70% or so, and can not effectively be controlled along the high concentrate dust of coal wall side migration
Reason finally can still enter distinguished and admirable region under coalcutter, and then the environment for moving frame and Sub-Level Caving operator to drop column causes seriously
Pollution.The essence of the negative pressure-induced dedusting technology of fully mechanized coal face is to be sprayed at distinguished and admirable region formation tunneling boring under coalcutter using calming the anger
It is spraying to settle the dust generated during coal cutting, belong to one kind of supplement measurements for reduction, efficiency can reach 60% or so, use
Although calm the anger it is spraying can reduce spraying water to a certain extent, but still the water mist that will cause working face diffuses, Jin Erying
Ring the operating environment for arriving coalcutter leeward region.
Summary of the invention
It is low for coalcutter contrary wind coal cutting dust dustfall efficiency in the prior art it is an object of the invention to overcome the problems, such as,
A kind of coal mining machine in full-mechanized mining face contrary wind coal cutting dust comprehensive processing method is provided.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
A kind of coal mining machine in full-mechanized mining face contrary wind coal cutting dust comprehensive processing method, it then follows the powder of " first suppression, drops (remove) again at rear control "
Dirt river harnessing ideas, when point four levels are to high dust intensity coal mine comprehensive face coal cutter contrary wind coal cutting dust pollution question into
The comprehensive improvement of row.
It comprises the steps of,
Step 1: quickly moistening roller and its broken coal body being nearby caving before and after coalcutter, effectively using the first spraying device
Increase break up coal body surface moisture content, the generation of dust can be inhibited from source and flies upward.
Step 2: guiding the dust flown upward to turn over using dust-break curtain, the second spraying device and third spraying device
More rocker arm of coal mining machine and migrate downwards along coal wall side, dust-break curtain and weather side rocker arm can coalcutter weather side rocker arm root with
The space of a semi-hermetic is formed between chute spillplate, can will be caving the accumulation of ash of impact generation；Second spraying device can
Change flow direction when air-flow reaches coalcutter by force, is able to guide dust-contained airflow and crosses rocker arm, to force the dust of accumulation along coal
It migrates downwards wall side；Third spraying device can be transported in the further injection dust-contained airflow of coalcutter fuselage regions along coal wall side
It moves, it can be settled while block resistance dust is spread to pavement side.
Step 3: concentrate purification to be directed to the high concentration dust-contained airflow of coal wall side migration using the 4th spraying device,
The escape for reducing dust, the high concentration dust-contained airflow that can efficiently concentrate suction purification to migrate along coal wall side, the 5th spray of cooperation
Mist device, effectively reducing dust, alee side is escaped.
Step 4: forming one of spray barrier using the 6th spraying device, being settled to the dust to escape.
Preferably, first spraying device is arranged in the top of coal mining machine support in step 1.First spray
Mist device, by a kind of mine coal cutter dust source tracking spray dust-reducing system, realization is opened and closed automatically.A kind of mining coal mining
Machine dust source tracking spray dust-reducing system is a prior art, reference can be made to the patent document of patent No. CN206290258u, herein
It repeats no more.
Preferably, in step 2, there is an one section of stiff cantilevers beam to extend out in Walk Part of Shearer end, described
Two spraying devices are equably arranged on the stiff cantilevers beam, and the dust-break curtain is suspended below the stiff cantilevers beam, institute
It states third spraying device and is evenly arranged in Walk Part of Shearer machine side close to the side on pavement.The effect of this method for arranging
Be: the second spraying device and third spraying device can work normally and from being smashed by coal cinder.
Preferably, the 4th spraying device is arranged on coalcutter machine side in step 3, existed using high-pressure fog
Negative pressure is formed in cavity, is aspirated and is purified high concentration dust-contained airflow.5th spraying device is mounted on coalcutter leeward and sidewinders
Cylinder rocker arm root position, further purifies dust-contained airflow while wet downwind side roller.
Preferably, the 6th spraying device is arranged in the top position of coal mining machine support in step 4.By one
Kind mine coal cutter dust source tracking spray dust-reducing system, the 6th spraying device realization open and close automatically.
Compared with prior art, beneficial effects of the present invention:
High dust Mine Dust administering method of the present invention, it then follows the treating flour dust of " first suppression, drops (remove) again at rear control " is thought
Road can be greatly reduced in the middle part of coalcutter at driver and the dust of fuselage downwind side in coal mining machine in full-mechanized mining face contrary wind coal cutting
Concentration.Existing Mine Dust processing technique, control measurements for reduction is relatively simple, dust-removing method energy and coalcutter of the present invention
Good mating, using the control measurements for reduction of multi-layer, dustfall efficiency is greatly improved.
Detailed description of the invention:
Fig. 1 is the working principle of the invention schematic diagram.
Marked in the figure: the first spraying device of 1-, 2- dust-break curtain, the second spraying device of 3-, 4- third spraying device, 5- the 4th
Spraying device, the 5th spraying device of 6-, the 6th spraying device of 7-, 8- coalcutter, 9- coal body, 10- rocker arm of coal mining machine, 11- mine
Machine support, 12- stiff cantilevers beam.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments
The range of invention.
Embodiment 1
As shown in Figure 1 and Figure 2, Fig. 1 is main view when coalcutter 8 exploits coal body 9, and Fig. 2 is top view.First spraying device, 1 cloth
It is placed in the top of coal mining machine support 11, the second spraying device 3 is equably arranged on stiff cantilevers beam 12, and dust-break curtain 2 is then hung
Below stiff cantilevers beam 12, third spraying device 4 is evenly arranged in Walk Part of Shearer machine side close to the side on pavement.Gear
Dirt curtain 2 and weather side rocker arm of coal mining machine 10 can form the space of a semi-hermetic in coalcutter end, can will be caving impact and generate
Accumulation of ash.4th spraying device 5 is arranged in coalcutter machine side close to one side position of coal wall, and the 5th spraying device 6 is mounted on
Coalcutter downwind side roller rocker arm root position, the 6th spraying device 7 are arranged in 11 top position of coal mining machine support.
Signified method for treating flour dust of the invention is: the treating flour dust thinking of " first suppression, drops (remove) again at rear control " is followed, point
Dust pollution question when four steps are to coal mining machine in full-mechanized mining face contrary wind coal cutting carries out comprehensive improvement.As shown in Figure 1, gas
Stream first with roller before and after the first spraying device 1 quickly wet coalcutter and its is nearby caving from A to flowing through coalcutter 8
Broken coal body inhibits the generation of dust from source as much as possible and flies upward；The spray that first spraying device suppression 1 selects wind loading rating strong
Mouth can be realized to the quick wet of coal body is crushed on roller before and after coalcutter and its neighbouring chute, will not generate a large amount of water
Mist is impacted to the sight of driver, and can also be controlled by spraying by coalcutter dust source tracking dust falling system come realize automatically turn on and
It closes.
The dust for recycling dust-break curtain 2, the guidance of the second spraying device 3 to fly upward crosses rocker arm of coal mining machine 10 and edge
Coal wall side is migrated downwards, it is avoided to spread to pavement side；Third spraying device 4 is evenly arranged in Walk Part of Shearer machine
Side of the face close to pavement.Dust-break curtain 2 and weather side rocker arm of coal mining machine 10 can form a semi-hermetic in coalcutter end
Space can will be caving the accumulation of ash of impact generation；Second spraying device 3 can change stream when distinguished and admirable arrival coalcutter by force
To forcing the dust of accumulation to cross rocker arm and migrate downwards along coal wall side；Third spraying device 4 can coalcutter fuselage regions into
One step injection dust-contained airflow is migrated along coal wall side, and block resistance dust settles it while diffusion to pavement side.
Recycle the 4th spraying device 5 and the 5th spraying device 6 that high-efficient purification is concentrated to be directed to the migration of coal wall side
High concentration dust-contained airflow reduces to maximum limit the escape of dust.
Finally the 6th spraying device 7 is recycled to form one of mist screen, settled to dust is escaped out, reduced under coalcutter
The pollution of wind regional dust, the final effective improvement for realizing coalcutter contrary wind coal cutting process dust harzard.
Claims (7)
1. a kind of coal mining machine in full-mechanized mining face contrary wind coal cutting dust comprehensive processing method, it is characterised in that: it comprises the steps of,
Step 1: quickly moistening roller and its broken coal body being nearby caving before and after coalcutter using the first spraying device；
Step 2: guiding the dust flown upward using dust-break curtain, the second spraying device and third spraying device, crosses and adopt
Coal machine rocker arm is simultaneously migrated downwards along coal wall side；
Step 3: concentrating purification to be directed to the highly concentrated of coal wall side migration using the 4th spraying device and the 5th spraying device
Spend dust-contained airflow；
Step 4: forming one of spray barrier using the 6th spraying device, being settled to the dust to escape.
2. coal mining machine in full-mechanized mining face contrary wind coal cutting dust comprehensive processing method according to claim 1, which is characterized in that
In step 1, first spraying device is arranged in the top of coal mining machine support.
3. coal mining machine in full-mechanized mining face contrary wind coal cutting dust comprehensive processing method according to claim 2, which is characterized in that
A kind of mine coal cutter dust source tracking spray dust-reducing system controls the opening and closing of first spraying device.
4. coal mining machine in full-mechanized mining face contrary wind coal cutting dust comprehensive processing method according to claim 1, which is characterized in that
In step 2, there is an one section of stiff cantilevers beam to extend out along coalcutter direction of advance in Walk Part of Shearer end, and described
Two spraying devices are equably arranged on the stiff cantilevers beam, and the dust-break curtain is suspended below the stiff cantilevers beam, institute
It states third spraying device and is evenly arranged in Walk Part of Shearer machine side close to the side on pavement.
5. coal mining machine in full-mechanized mining face contrary wind coal cutting dust comprehensive processing method according to claim 1, which is characterized in that
In step 3, the 4th spraying device is mounted on coalcutter machine side close to one side position of coal wall, the 5th spraying device
It is mounted on coalcutter downwind side roller rocker arm root position.
6. high dust coal mine fully-mechanized mining working Comprehensive Dust Control method according to claim 1, which is characterized in that in step
In rapid four, the 6th spraying device is arranged in the top position of coal mining machine support.
7. high dust coal mine fully-mechanized mining working Comprehensive Dust Control method according to claim 6, which is characterized in that a kind of
Mine coal cutter dust source tracking spray dust-reducing system controls the opening and closing of the 6th spraying device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107811.6A CN109026126B (en) | 2018-09-21 | 2018-09-21 | Comprehensive treatment method for upwind coal cutting and dust production of fully mechanized coal mining face coal mining machine |
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| CN201811107811.6A CN109026126B (en) | 2018-09-21 | 2018-09-21 | Comprehensive treatment method for upwind coal cutting and dust production of fully mechanized coal mining face coal mining machine |
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| CN109026126B CN109026126B (en) | 2020-08-21 |
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| CN201811107811.6A Active CN109026126B (en) | 2018-09-21 | 2018-09-21 | Comprehensive treatment method for upwind coal cutting and dust production of fully mechanized coal mining face coal mining machine |
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Cited By (4)
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| CN111101938A (en) * | 2020-02-15 | 2020-05-05 | 北京中矿兴宝环保科技有限公司 | Micro-fog dust suppression method based on cutting dust source of coal mining machine |
| CN111677545A (en) * | 2020-05-28 | 2020-09-18 | 安徽理工大学 | Combine and adopt working face gas-liquid spraying dust fall system |
| CN112392482A (en) * | 2020-11-05 | 2021-02-23 | 太原理工大学 | Device for treating dust on underground coal face by gas atomization turbulent fluid |
| CN113027452A (en) * | 2021-04-07 | 2021-06-25 | 山东科技大学 | Multi-stage multi-dimensional atomized dust prevention and control method and device for large-mining-height fully-mechanized coal mining face |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101938A (en) * | 2020-02-15 | 2020-05-05 | 北京中矿兴宝环保科技有限公司 | Micro-fog dust suppression method based on cutting dust source of coal mining machine |
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| CN111677545A (en) * | 2020-05-28 | 2020-09-18 | 安徽理工大学 | Combine and adopt working face gas-liquid spraying dust fall system |
| CN111677545B (en) * | 2020-05-28 | 2021-06-25 | 安徽理工大学 | Combine and adopt working face gas-liquid spraying dust fall system |
| CN112392482A (en) * | 2020-11-05 | 2021-02-23 | 太原理工大学 | Device for treating dust on underground coal face by gas atomization turbulent fluid |
| CN113027452A (en) * | 2021-04-07 | 2021-06-25 | 山东科技大学 | Multi-stage multi-dimensional atomized dust prevention and control method and device for large-mining-height fully-mechanized coal mining face |
| CN113027452B (en) * | 2021-04-07 | 2023-11-14 | 山东科技大学 | Multistage multidimensional atomization dust control method and device for large-mining-height fully-mechanized mining face |
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