CN110130826A - A kind of complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention - Google Patents
A kind of complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention Download PDFInfo
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- CN110130826A CN110130826A CN201910583227.6A CN201910583227A CN110130826A CN 110130826 A CN110130826 A CN 110130826A CN 201910583227 A CN201910583227 A CN 201910583227A CN 110130826 A CN110130826 A CN 110130826A
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
-
- 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
- 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
- E21F5/20—Drawing-off or depositing dust
Abstract
A kind of complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention of the invention, can solve traditional Driving Face in Coal Tunnel cannot fundamentally realize depositing dust, dust-proof, and dust occupational health is difficult to the technical issues of being guaranteed when worker's operation field.The following steps are included: not digging tunnel coal-bed flooding to coal mine；By connecting water supply pipe, is sprinkled water to the tunnel, catches dirt；Dust guard is worn by operating personnel；By installing negative pressure device on the air feed air duct in the tunnel.The complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention of the invention is to increase Coal ' moisture from source, dust yield when reducing fully-mechanized digging machine cutting tunnel；It is aided with that fully-mechanized digging machine spraying, air duct negative pressure device, three water curtains, twice Dust collecting net, tunnel water-sprinkling, operating personnel wears the measures such as mining dust-proof mask in tunnel, realizes underground mine Driving Face in Coal Tunnel synthesis dust prevention effect.
Description
Technical field
The present invention relates to dust suppression in mine technical fields, and in particular to a kind of underground mine Driving Face in Coal Tunnel synthesis dust prevention
Complete method.
Background technique
With the development of the times, coal mine occupational disease hazards preventing and controlling increasingly cause the great attention of country, also result in
The attention of coalman author.Under current state, rock heading face driving dust control technology measure is substantially more perfect, mainly passes through
Dedusting fan, adjustment air duct negative pressure, fully-mechanized digging machine included spraying, meet head on three water curtain of rear, twice Dust collecting net, tunnel water-sprinkling are installed
The behaves depositing dust such as depositing dust, effect are more obvious.But above-mentioned complete depositing dust behave is then not properly suited for coal road working face driving
Period depositing dust, traditional Driving Face in Coal Tunnel mainly by carrying out depositing dust to tunnel water-sprinkling, cannot fundamentally realize drop
Dirt, dust-proof, dust occupational health is difficult to be guaranteed when worker's operation field.
Summary of the invention
A kind of complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention proposed by the present invention, can solve traditional coal
Lane driving face cannot fundamentally realize depositing dust, dust-proof, and dust occupational health is difficult to be guaranteed when worker's operation field
The technical issues of.
To achieve the above object, the invention adopts the following technical scheme:
A kind of complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention, comprising the following steps:
Tunnel coal-bed flooding is not dug to coal mine；
By connecting water supply pipe, is sprinkled water to the tunnel, catches dirt；
Dust guard is worn by operating personnel；
By installing negative pressure device on the air feed air duct in the tunnel.
Further, described not dig tunnel coal-bed flooding to coal mine；It specifically includes:
In conjunction with the positional relationship away from roadway floor of meeting head on, water injecting drilling parameter is designed；
Water flooding regime and water injection parameter are determined in conjunction with operating condition.
Further, the combination is met head on the positional relationship away from roadway floor, and the note in water injecting drilling parameter is designed
Water drilling parameter includes:
Boring aperture and hole count, drilling hole depth and orientation.
Further, the combination operating condition determines water flooding regime and water injection parameter；
Including the water flooding regime using the pre- water flooding regime water filling of static pressure shallow bore hole；
Flood pattern using the static pressure water in the clear water pipeline of underground, carry out low pressure, the short time, low discharge mode infused
Water is connected the water supply pipe of each drilling with high-pressure rubber pipe, and implementation is porous to fill the water simultaneously.
Further, the water injection parameter includes water injection pressure, injection flow and pouring water into borehole percentage；
Wherein, when static pressure fills the water, water injection pressure is greater than or equal to 1.5Mpa；Note is controlled using the water injection rate for adjusting drilling
Water pressure, water filling is gradually boosted from low pressure up to pressure is stablized, when static pressure water injection pressure does not reach requirement, then using dynamic pressure note
Water, dynamical pressure water infusion mode are pressurizeed using water injecting pump, carry out high pressure, short time, high flow capacity water filling, water injection pressure 8-
12Mpa；
Using small flow water injection, water injection manifold measures 0.5m3/h；
Pouring water into borehole percentage is according to " safety regulations in coal mine ", " AQ1020-2006+ underground coal mine comprehensive dust prevention and treatment skill
Art specification " it requires, it includes that original natural moisture content reaches 4% or more and single hole water filling that coal body institute water content should be made after pouring water into borehole
Total amount should be such that the prewet standard of average moisture content increment more than or equal to 1.5% of coal body of the drilling determines.
Further, described by connecting water supply pipe, it sprinkled water to the tunnel, catch dirt；
Include:
Spraying device is carried using fully-mechanized digging machine big gun head to connect by mating model water supply hose with water supply pipe in tunnel,
When fully-mechanized digging machine operation, using inside and outside spraying, internal spraying pressure is greater than or equal to 2Mpa, and external spraying pressure is greater than or equal to 4Mpa.
Further, described by connecting water supply pipe, it sprinkled water to the tunnel, catch dirt；
Further include:
Dustproof water screen is installed in away from setting range of meeting head on, water curtain is by mating model water pipe, with water supply pipe in tunnel
Connection forms dust suppression device by water spray, when dust operation is met head on to carry out in tunnel, opens this device, realizes watering and lowering dust in tunnel
Effect.
Further, described by connecting water supply pipe, it sprinkled water to the tunnel, catch dirt；
Further include:
Away from meeting head in setting range, full face Dust collecting net and spraying device are installed, wherein Dust collecting net and install by spraying
Standard:
(1) Dust collecting net uses 4, and " steel pipe does frame, and Dust collecting net mesh is less than or equal to 2mm × 2mm, using metal wire side；
(2) spraying device must be installed above Dust collecting net, it is spraying apart from Dust collecting net wire side 400mm-600mm, apart from top plate
200mm can cover Dust collecting net tunneling boring by spraying.
Further, described by connecting water supply pipe, it sprinkled water to the tunnel, catch dirt；
Further include: one of Water gate valve is arranged every 50m in water supply pipe in tunnel, and connects water spray hose, irregularly opens
Gate valve carries out watering and lowering dust to tunnel.
Further, described by installing negative pressure device on the air feed air duct in the tunnel；
Including by installing air duct negative pressure device on the air feed air duct away from setting position of meeting head on, the negative pressure device is can
Adjust the air duct of aperture size.
As shown from the above technical solution, the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention of the invention be from
Source increases Coal ' moisture, dust yield when reducing fully-mechanized digging machine cutting tunnel；Be aided with fully-mechanized digging machine spraying, air duct negative pressure device,
Three water curtains, twice Dust collecting net, tunnel water-sprinkling, operating personnel wears the measures such as mining dust-proof mask in tunnel, realizes well work coal
Mine Driving Face in Coal Tunnel synthesis dust prevention effect.When Driving Face in Coal Tunnel meets head on digging laneway, by anti-with this synthesis
Dirt set technique, dust concentration is down to 2.5mg/m3 hereinafter, reaching national dust concentration less than 4mg/m3 requirement, simultaneously in tunnel
Occupational health physical examination data are shown out of annual enterprise, and coal roadway tunneling operation worker's pneumoconiosis disease incidence is greatly reduced, this also at
For the best welfare of coal miner.
Detailed description of the invention
Fig. 1 is the method for the present invention arrangement process floor map；
Fig. 2 is coal-bed flooding hole arrangement and equipment connection schematic diagram of the present invention；
Fig. 3 is dustproof water screen sectional schematic diagram in tunnel of the present invention；
Fig. 4 is that Dust collecting net processes scheme of installation in tunnel of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
As shown in Figure 1, the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention described in the present embodiment, comprising 1,
Coal-bed flooding；2, fully-mechanized digging machine big gun head is included spraying；3, positive pressure respirator；4, air duct negative pressure device；5, away from meet head on be no more than 50m,
Spacing is three dustproof water screens of 8~10m；6, (mating to make away from the twice Dust collecting net for meeting head on to be no more than 100m, spacing is 8~10m
With twice water curtain)；7, water supply pipe every 50m installs a Water gate valve in tunnel, for watering and lowering dust in tunnel；8, in tunnel
Operating personnel wears mining dust-proof mask.
(2) working principle
1 technique is coal-bed flooding, is to reduce fully-mechanized digging machine by increasing coal seam water content to tunnel pumping water into coal is not dug and cut
Dust yield when cutting tunnel；2,5,6,7 technique is to be sprinkled water to tunnel by connecting water supply pipe, catch dirt, mechanically
Reduce Dust Capacity in tunnel；3,8 technique is to wear dust guard by operating personnel, reduces and suck intracorporal dust；4 techniques,
It is the negative pressure device (being usually no more than 100m away from meeting head on) by being installed on air feed air duct, reduces driving face and meet head on wind pressure,
Reduction is met head on dust-producing amount.
(3) the step of process
1, coal seal water-infusion technology
Below by taking 111102 adhesive tape crossheading of Zhong Meixinji company Liu Zhuan coal mine as an example, underground mine coal roadway tunneling is described in detail
Working face coal seal water-infusion technology step (see attached drawing 2).
(1) water injecting drilling design parameter determines
Meeting head on to account for about 1/2 height two water injection holes of construction of tunnel away from roadway floor (in coal seam thickness 1/2 during half coal petrography
Construct at height), 42~50mm of bore dia.Water injection hole is in the horizontal direction by span length trisection, because meeting head on as shallow holes irrigation,
Time is short, and water injection rate is small, so boring direction moisture factor is based on 1.0 times of hole depth.
1. boring aperture and hole count
111102 adhesive tape crossheading shallow holes irrigations drilling use aperture be 42mm wind coal borer construction, drill be arranged in bottom plate to
Upper 1.9m constructs (when half coal petrography, the perforating in the middle part of coal seam), then first drilling is constructed away from the left side 1.8m aperture in tunnel
Second drilling spacing 1.8m aperture to the right.
2. drill hole depth, orientation
I. to improve flood effectiveness, water injecting drilling vertical working section arrangement is drilled using parallel cloth hole away from bottom plate
1.9m, when half coal petrography, the perforating in the middle part of coal seam, because geological structure total rock section can not construct water injecting drilling.
Ii.111102 adhesive tape crossheading is averaged daily drilling depth by 8m calculating, and to guarantee flood effectiveness, water injecting drilling hole depth must not
Progress is promoted (to adjust water filling hole depth and water injection time, hole in time according to drilling depth plan less than 9m and on the day of being able to satisfy working face
Deep be more than to work as daily planning drilling depth 1m in principle, and calculation method is identical).
(2) determination of water flooding regime and water injection parameter
1. water flooding regime
Using the pre- water flooding regime water filling of static pressure shallow bore hole.
2. flood pattern
Water filling using the static pressure water in the clear water pipeline of underground, carry out low pressure, the short time, low discharge mode filled the water.
The water supply pipe of each drilling is connected with high-pressure rubber pipe, implementation is porous to fill the water simultaneously.
3. water injection parameter
I. water injection pressure
When static pressure fills the water, water injection pressure is not less than 1.5Mpa；It is general that water filling pressure is controlled using the water injection rate for adjusting drilling
Power, water filling are gradually boosted from low pressure up to pressure is stablized.When static pressure water injection pressure does not reach requirement, then dynamical pressure water infusion is used,
Special measure need to separately be compiled, and (dynamical pressure water infusion mode is pressurizeed using water injecting pump, carries out high pressure, short time, high flow capacity water filling, water filling
Pressure is advisable with 8-12Mpa.)
Ii. injection flow
Using small flow water injection, small flow water injection is best to coal seam wettability effect, desirable 0.5m3/h when water filling.
The determination of III pouring water into borehole percentage: according to " safety regulations in coal mine ", " AQ1020-2006+ underground coal mine dust
Integrated control technique specification " it requires, it includes that original natural moisture content reaches 4% or more that coal body institute water content should be made after pouring water into borehole
And single hole water filling total amount should make the drilling prewet coal body average moisture content increment be more than or equal to 1.5%, the driving face
The original natural moisture in coal seam is average 2.61%, therefore working face drilling ton coal water filling is selected as 1.5%, can meet water filling and want
It asks, so development end drilling ton coal water filling is selected as 2.0% (containing surplus capacity 0.5%), i.e. ton coal water filling measures 0.02m3.
Single hole water injection rate calculates: Q=LSMrqK
In formula: Q, single hole water injection rate, m3
L, drillable length, m；
S, the spacing of wells, 1.8m；
M, coal seam thickness 4.09m (taking average coal thick)
R, the bulk density 1.41t/m3 of coal
Q, ton coal water filling measures 0.02m3/t
K, boring direction moisture factor takes 1.0.
Pouring water into borehole amount sees attached list (111102 adhesive tape crossheading drilling parameter table).
D, water injection time calculates: static pressure: T=Q/V
In formula: T, water injection time, h；
Q, single hole water injection rate, m3；
V, pouring water into borehole flow, static pressure water filling take 0.5m3/h.
Static pressure water injection parameter
It, also can be using the mark that " perspiration " phenomenon is moistened as coal body in predetermined wetted perimeter comprehensively in actually water filling
Will.It can terminate to fill the water after " perspiration ".
2, fully-mechanized digging machine big gun head carries spraying device
Fully-mechanized digging machine big gun head carries spraying device by mating model water supply hose, connect with water supply pipe in tunnel.Comprehensive pick
When machine operation, it is necessary to use is inside and outside spraying, and internal spraying pressure cannot be less than 2Mpa, and external spraying pressure cannot be less than 4Mpa, if
Then external spraying pressure must not be lower than 8Mpa when inner sprayer unit is unable to normal use.
3, positive pressure respirator device
Regular mining positive pressure respirator device is connect by mating model air feed hose with air-supply pipeline in tunnel.Comprehensive pick
When machine driver's operation, the anti-dust mask on positive pressure respirator is worn, is carried out dust-proof.This device effectively solve to meet head on operation when,
Dust concentration is big, and air (oxygen) concentration is low, and comprehensive pick driver wears common anti-dust mask expiratory dyspnea problem.
4, air duct negative pressure device
By away from meet head on be no more than the position 100m air feed air duct on install air duct negative pressure device (i.e. one it is tubaeform, can
Adjust the air duct of aperture size), reduce driving face and meet head on wind pressure, reduction is met head on dust-producing amount.
5, dustproof water screen
It is being no more than three dustproof water screens for installing spacing as 8~10m in the position 50m away from meeting head on, water curtain passes through mating model
Water pipe is connect with water supply pipe in tunnel, forms dust suppression device by water spray.When dust operation is met head on to carry out in tunnel, this dress is opened
It sets, realizes watering and lowering dust effect in tunnel.(see attached drawing 3)
6, Dust collecting net device
It is being no more than the position 100m away from meeting head on, is installing the full face Dust collecting net of covering that twice spacing is 8~10m and (contain spray
Mist).Dust collecting net and install standard by spraying: (1) Dust collecting net uses 4 " steel pipe does frame, Dust collecting net mesh it is inaccurate more than 2mm ×
2mm, using metal wire side, door switch is flexible；(2) spraying device must be installed above Dust collecting net, it is spraying apart from Dust collecting net wire side
400mm-600mm, apart from top plate 200mm, capable of covering Dust collecting net tunneling boring by spraying, (fog-spray nozzle is vertical with wire side, or is in 30-45 degree
Angle).(see attached drawing 4)
7, water supply pipe watering device
One of water shifting block (gate valve) should be arranged every 50m in water supply pipe in tunnel, and connects water spray hose, irregularly open
Gate valve carries out watering and lowering dust to tunnel.
8, personnel wear mining dust-proof mask in tunnel.
According to the rules, it is all enter well personnel must be equipped with mining dust-proof mask, when personnel enter dust tunnel, need to wear
Mining dust-proof mask is worn, Dust Capacity in suction body is reduced, reduces occupational health hazards degree.
In summary, underground mine Driving Face in Coal Tunnel, can by the complete dust-proof technique with the embodiment of the present invention
Dust exceeding problem is fundamentally effectively solved, occupational health hazards when dramatically reducing worker's field operation.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention, it is characterised in that: the following steps are included:
Tunnel coal-bed flooding is not dug to coal mine；
By connecting water supply pipe, is sprinkled water to the tunnel, catches dirt；
Dust guard is worn by operating personnel；
By installing negative pressure device on the air feed air duct in the tunnel.
2. the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention according to claim 1, it is characterised in that: institute
It states and does not dig tunnel coal-bed flooding to coal mine；It specifically includes:
In conjunction with the positional relationship away from roadway floor of meeting head on, water injecting drilling parameter is designed；
Water flooding regime and water injection parameter are determined in conjunction with operating condition.
3. the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention according to claim 2, it is characterised in that: institute
It states in conjunction with the positional relationship away from roadway floor of meeting head on, the water injecting drilling parameter designed in water injecting drilling parameter includes:
Boring aperture and hole count, drilling hole depth and orientation.
4. the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention according to claim 2, it is characterised in that: institute
It states and operating condition is combined to determine water flooding regime and water injection parameter；
Including the water flooding regime using the pre- water flooding regime water filling of static pressure shallow bore hole；
Flood pattern using the static pressure water in the clear water pipeline of underground, carry out low pressure, the short time, low discharge mode filled the water,
The water supply pipe of each drilling is connected with high-pressure rubber pipe, implementation is porous to fill the water simultaneously.
5. the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention according to claim 4, it is characterised in that: institute
Stating water injection parameter includes water injection pressure, injection flow and pouring water into borehole percentage；
Wherein, when static pressure fills the water, water injection pressure is greater than or equal to 1.5Mpa；Water filling pressure is controlled using the water injection rate for adjusting drilling
Power, water filling are gradually boosted from low pressure up to pressure stabilization, when static pressure water injection pressure does not reach requirement, then use dynamical pressure water infusion,
Dynamical pressure water infusion mode is pressurizeed using water injecting pump, carries out high pressure, short time, high flow capacity water filling, water injection pressure 8-12Mpa；
Using small flow water injection, water injection manifold measures 0.5m3/h；
Pouring water into borehole percentage is according to " safety regulations in coal mine ", " AQ1020-2006+ underground coal mine Integrated Technology of Dust Suppression in Comprehensive rule
Model " it requires, it includes that original natural moisture content reaches 4% or more and single hole water filling total amount that coal body institute water content should be made after pouring water into borehole
The prewet standard of average moisture content increment more than or equal to 1.5% of coal body of the drilling should be made to determine.
6. the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention according to claim 1, it is characterised in that: institute
It states by connecting water supply pipe, is sprinkled water to the tunnel, catches dirt；
Include:
It carries spraying device using fully-mechanized digging machine big gun head to connect by mating model water supply hose with water supply pipe in tunnel, comprehensive pick
When machine operation, using inside and outside spraying, internal spraying pressure is greater than or equal to 2Mpa, and external spraying pressure is greater than or equal to 4Mpa.
7. the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention according to claim 6, it is characterised in that:
It is described by connect water supply pipe, sprinkled water to the tunnel, catch dirt；
Further include:
Dustproof water screen is installed in away from setting range of meeting head on, water curtain is connect by mating model water pipe with water supply pipe in tunnel,
Dust suppression device by water spray is formed, when dust operation is met head on to carry out in tunnel, this device is opened, realizes watering and lowering dust effect in tunnel.
8. the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention according to claim 7, it is characterised in that: institute
It states by connecting water supply pipe, is sprinkled water to the tunnel, catches dirt；
Further include:
Away from meeting head in setting range, full face Dust collecting net and spraying device are installed, wherein Dust collecting net and install mark by spraying
It is quasi-:
(1) Dust collecting net uses 4, and " steel pipe does frame, and Dust collecting net mesh is less than or equal to 2mm × 2mm, using metal wire side；
(2) spraying device must be installed above Dust collecting net, it is spraying apart from Dust collecting net wire side 400mm-600mm, apart from top plate
200mm can cover Dust collecting net tunneling boring by spraying.
9. the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention according to claim 7, it is characterised in that: institute
It states by connecting water supply pipe, is sprinkled water to the tunnel, catches dirt；
Further include: one of Water gate valve is arranged every 50m in water supply pipe in tunnel, and connects water spray hose, irregularly opens gate valve,
Watering and lowering dust is carried out to tunnel.
10. the complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention according to claim 7, it is characterised in that:
It is described by installing negative pressure device on the air feed air duct in the tunnel；
Including by installing air duct negative pressure device on the air feed air duct away from setting position of meeting head on, the negative pressure device is adjustable
The air duct of aperture size.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672484A (en) * | 2019-11-08 | 2020-01-10 | 河南理工大学 | Experimental device and experimental method for evaluating coal seam water injection dust fall effect |
| CN111308046A (en) * | 2019-11-29 | 2020-06-19 | 南通仁隆科研仪器有限公司 | Loaded coal rock cutting dust production simulation experiment device |
| CN113565455A (en) * | 2021-07-26 | 2021-10-29 | 中煤科工集团沈阳研究院有限公司 | Coal face porous synchronous water injection dust fall accurate control system and water injection method |
| CN115142844A (en) * | 2022-04-27 | 2022-10-04 | 中国矿业大学(北京) | Intelligent joint control accurate dust removal technology and complete process device |
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| CN102852544A (en) * | 2012-09-28 | 2013-01-02 | 淮北矿业股份有限公司桃园煤矿 | Comprehensive dustproof technology of fully mechanized excavation face based on dust segregation |
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| CN103670320A (en) * | 2013-12-25 | 2014-03-26 | 大同煤矿集团有限责任公司 | Comprehensive dust prevention method for large-mining-height working face |
| CN103939126A (en) * | 2014-03-31 | 2014-07-23 | 解波 | Coal seam water injection method of coal mining working face |
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| CN110672484A (en) * | 2019-11-08 | 2020-01-10 | 河南理工大学 | Experimental device and experimental method for evaluating coal seam water injection dust fall effect |
| CN110672484B (en) * | 2019-11-08 | 2024-04-16 | 河南理工大学 | Experimental device and experimental method for evaluating coal seam water injection dust fall effect |
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| CN113565455A (en) * | 2021-07-26 | 2021-10-29 | 中煤科工集团沈阳研究院有限公司 | Coal face porous synchronous water injection dust fall accurate control system and water injection method |
| CN113565455B (en) * | 2021-07-26 | 2023-01-31 | 中煤科工集团沈阳研究院有限公司 | Coal face porous synchronous water injection dust fall accurate control system and water injection method |
| CN115142844A (en) * | 2022-04-27 | 2022-10-04 | 中国矿业大学(北京) | Intelligent joint control accurate dust removal technology and complete process device |
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