CN110130968A - A kind of antifreeze method for extremely frigid zones underground mine Intake shaft - Google Patents
A kind of antifreeze method for extremely frigid zones underground mine Intake shaft Download PDFInfo
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- CN110130968A CN110130968A CN201910398240.4A CN201910398240A CN110130968A CN 110130968 A CN110130968 A CN 110130968A CN 201910398240 A CN201910398240 A CN 201910398240A CN 110130968 A CN110130968 A CN 110130968A
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- downcast
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- auxiliary shaft
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- 230000002528 anti-freeze Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009423 ventilation Methods 0.000 claims abstract description 78
- 238000007710 freezing Methods 0.000 claims description 15
- 230000008014 freezing Effects 0.000 claims description 13
- 208000011580 syndromic disease Diseases 0.000 claims description 13
- 230000009746 freeze damage Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000036541 health Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 235000015110 jellies Nutrition 0.000 description 4
- 239000008274 jelly Substances 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
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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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/10—Air doors
- E21F1/12—Devices for automatically opening air doors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Abstract
It the invention discloses a kind of antifreeze method for extremely frigid zones underground mine Intake shaft, is made of preheating unit (15), air curtain unit (18), annular jet air port (19), blower fan apparatus, air door, sensor, PLC control system (14) combination；Preheating unit (15) is arranged in the well head earth's surface of downcast (2), and air curtain unit (18) is arranged in the well head earth's surface of auxiliary shaft (1)；Annular jet air port (19) is arranged in the pit shaft of auxiliary shaft (1)；PLC control system (14) is connect with each sensor, receives each sensor data collected, and adjusts the operation of control preheating unit (15), air curtain unit (18), blower, air door.The present invention can change according to extremely frigid zones underground mine day and night temperature leads to ventilating system wind direction variation characteristic, realize that normal ventilation and the inverted ventilation state of point round the clock period of Intake shaft are antifreeze, substantially reduce the pre- thermal energy consumption of pre-heating system, it improves personnel's thermal comfort and generates career safety & health, not only meet ventilation required airflow requirement, but also economical rationality solve the problems, such as auxiliary shaft freeze well.
Description
Technical field
The invention belongs to mine ventilation environmental technology fields, and in particular to a kind of solution extremely frigid zones mine Intake shaft jelly
The method of well problem, the Intake shaft entered the wind especially suitable for ventilating system by downcast, auxiliary shaft are antifreeze.
Background technique
Underground mine Intake shaft mainly includes auxiliary shaft and downcast, in the mine of High aititude, cold district, 80% or so
Underground mine Intake shaft occur freeze well disaster.Earth's surface cold Cryogenic air enters along Intake shaft, encounters Intake shaft
The cooling down of low temperature rock temperature acts on, and cold air condenses icing in the equipment such as Intake shaft wall surface, pit shaft inner cable, pipeline,
The normal operation for having seriously affected equipment in pit shaft, causes equipment damage, it is often more important that (is become greatly by the variation of temperature day and night temperature
Change up to 10 DEG C or more), evening temperature falls sharply, and icing rate adds block in Intake shaft, and earth's surface temperature on daytime increases ice cube and opens again
Begin to melt.The thawing of wall surface ice block falls off, and forms falling from high altitude strike and hurts sb.'s feelings, situation seriously may cause ice piton shape ice cube
It is lethal to pound people.Therefore, Intake shaft, which freezes well problem, becomes the major safety risks of extremely frigid zones underground mine.
Freeze well problem for Intake shaft, traditional technology is added respectively in the setting of Intake shaft earth's surface using preheated air
Thermal will mix with cold air after the preheating of part earth's surface cold air, then be fed together Intake shaft.Merely from antifreeze mesh
Without consider economic cost be that can solve the jelly well problem of Intake shaft completely.But in actual motion, it is not difficult to find that point
Preheating machine system is not installed in the Intake shafts earth's surface such as downcast, auxiliary shaft, handled air quantity is big, energy consumption is big, especially for
The preheating of auxiliary shaft earth's surface, auxiliary shaft are in industrial sites, and preheating unit installation site is limited, by pipeline original in auxiliary shaft, cable
And the influence of lifting means, there are heat supply air hose installation space is inadequate.Formula (no heat supply air hose) is filled according to straight, there is only send
Air temperature is excessively high or the air-supply excessive influence of wind speed on go into the well personnel's comfort problem, and because mixing hot-air and wellbore wall
Hot and humid area occurs on the way, air themperature is in the trend gradually decreased, so that the personnel that go into the well change to cold ring from opposite thermal environment
Border, and the personnel of upper well taper to thermal environment from relatively cool environment, the personnel that above go into the well are in extremely unstable restricted clearance,
In addition there was dampness in the air, has seriously affected the occupational health health for the personnel that above go into the well.
In addition, the general diurnal variation temperature of extremely frigid zones is larger, there are Intake shaft inverted ventilation phenomenon, i.e., Intake shaft daytime into
Wind, evening outlet air, and inverted ventilation is distinguished and admirable is relatively higher than earth's surface, if the inverted ventilation heat is rationally and efficiently used, it is clear that can substantially reduce
Auxiliary shaft preheats antifreeze energy consumption, or the heat wellbore wall directly contained using backdraft, prevents Intake shaft from freezing, will be big
It is big to reduce preheating units consumption.
In " comparison of the antifreeze mode of mine shaft " text that " coal engineering " the 4th phase in 2004 delivers, pit shaft is described
The mode of movement of hot wind after antifreeze importance and its heating in coal production, and point out: with the increase well of mine shaft depth
Cylinder temperature can gradually improve, and icing phenomenon is concentrated mainly on upper wellbore especially at ground, so for cold district
Intake very big vertical or inclines, in the case where condition license, heater effect is arranged near pit shaft mouth can be more
It is good.This mode is used in the design of Xinwen Mine Administration, Shandong Prov. Pan Xi mine pair shaft of vertical well heat preservation, is achieved the desired results.
But this article also indicates that: it should be noted that in relevant specialities close fits such as design Shi Yaoyu structure, mining, mechanism, investment fortune
After row, Yao Tigao field management is horizontal, is strict with, and heapstead is accomplished closed as far as possible, can just reach expected design effect in this way
Fruit, otherwise not only will affect the temperature of heapstead, also will cause pit shaft icing.
In order to solve the ice formation issues of pit shaft in winter, Chinese patent application disclose a kind of Intake shaft air quantity multiplication and
Heating and anti-freezing device (application number: 201510159688.2), will just by the not closed gap on the inside of device toroidal shell itself
Hot air flow is pressed to be blown into pit shaft downwards along wall surface, the hot air flow with larger speed can be formed above a negative pressure region in shell,
Promote well head air to flow into pit shaft and carry out uniform heat exchange with it, to achieve the purpose that prevent pit shaft from freezing.Whole device
Be fixed near well head on wall surface using intercalation and anchor structure, shell gap blow out hot wind be close to wall surface, can prevent due to
Hot-flow flue directly extrudes hot wind and causes wall surface uneven heating icing phenomenon.But this heating and anti-freezing device can only solve pit shaft part
It is antifreeze, it is unsuitable for solving extremely frigid zones mine Intake shaft jelly well problem.
Summary of the invention
The purpose of the present invention exists in winter aiming at the Intake shaft of extremely frigid zones underground mine auxiliary shaft, downcast
Jelly well disaster problem and prior art there is preheating, antifreeze energy consumption is high, installation space in auxiliary shaft earth's surface and pit shaft
Position is limited, conveying hot-air process influences personnel's thermal comfort, influence the technical problems such as career safety & health and backdraft accumulates
What is contained provides using heat potential, and provides a kind of antifreeze method for extremely frigid zones underground mine Intake shaft, this method
Can be changed according to extremely frigid zones underground mine day and night temperature leads to ventilating system wind direction variation characteristic, realizes Intake shaft
Point round the clock period normal ventilation and inverted ventilation state it is antifreeze.
Above-mentioned purpose to realize the present invention, a kind of antifreeze side for extremely frigid zones underground mine Intake shaft of the present invention
Method uses following technical scheme:
A kind of antifreeze method for extremely frigid zones underground mine Intake shaft of the present invention, the winterization system of use is by pre-
Heat engine group, air curtain unit, annular jet air port, blower fan apparatus, air door, sensor, PLC control system combination are constituted；It is described
Preheating unit be arranged in the well head earth's surface of downcast, preheat downcast earth's surface part cold air, be sent into downcast through hot air pipe
Pit shaft in, hot-air with from the not preheated cold air of downcast earth's surface mix after along downcast be sent into underground；The sky
Air curtain unit is arranged in the well head earth's surface of auxiliary shaft；The annular jet scenery resource quality in the pit shaft of auxiliary shaft, penetrate by formation level
Air curtain is flowed, separates the earth's surface cold wind air intake of auxiliary shaft, jet stream power is provided by air curtain unit, passes through air hose between the two
Connection；The blower includes the main fan of earth's surface, the downcast connection auxiliary fan in lane, and the auxiliary fan in downcast connection lane is mounted in downcast connection lane,
The main fan of earth's surface is mounted in the earth's surface of returnairshaft, provides full mine ventilating system power, the underground behind stope operation area is discharged
Waste air；The air door includes downcast connection lane air door, middle section air inlet air door, middle section air return lane air door, and downcast joins lane wind
Door is arranged in downcast connection lane, and middle section air inlet air door is arranged in the air inlet of middle section, during middle section air return lane air door is arranged in
In section air return lane, play distinguished and admirable effect；The sensor includes being mounted in the air duct of preheating machine set outlet
An air flow sensor, a wind-warm syndrome sensor, and another air flow sensor, another being mounted in downcast connection lane
A wind-warm syndrome sensor, the practical air feed air quantity of detection preheating unit and wind-warm syndrome, downcast join the actual air volume and wind-warm syndrome in lane respectively；
PLC control system is connect with each sensor, receives each sensor data collected, and adjusts control preheating unit, air curtain
Unit, blower, air door realize as follows point round the clock period of Intake shaft normal ventilation and inverted ventilation state it is antifreeze:
1) normal ventilation state on daytime opens downcast by PLC control system and joins the auxiliary fan in lane, the main fan of earth's surface, preheating machine
Group, air curtain unit open downcast and join lane air door, middle section air inlet air door, middle section air return lane air door, at this time the earth's surface of auxiliary shaft
Air inlet by annular jet air port be formed by air curtain separate shut off and downcast join the auxiliary fan in lane outlet positive pressure reaction,
Micro cold wind stream is kept to flow in the intersection section of auxiliary shaft, auxiliary shaft crossdrift to auxiliary shaft crossdrift and downcast connection lane, to avoid
The low temperature pit shaft that a large amount of earth's surface cold wind downlinks encounter auxiliary shaft avoids and occurs to freeze and freeze well phenomenon；Heat after preheating unit preheating
Air with mix from the earth's surface of downcast air inlet after heat up, hot-air is dropped along the cooling absorption heat of downcast downlink after mixing
Temperature, but mixing air temperature is consistently higher than the freezing point temperature of air, to prevent air in the wellbore wall knot of downcast
Ice mixes distinguished and admirable continue along downcast connection lane, middle section air inlet, stope operation area, the flowing of middle section air return lane, most afterwards through returnairshaft
Flow out earth's surface.
It is above-mentioned " to keep micro cold wind stream in the intersection section of auxiliary shaft, auxiliary shaft crossdrift to auxiliary shaft crossdrift and downcast connection lane
Flowing " its " micro " refers to the 10%-30% for keeping original air quantity, and " original air quantity " refers to that the not upper one kind of the present invention in mine is used for
Air quantity in the case of the antifreeze method of extremely frigid zones underground mine Intake shaft.
2) night inverted ventilation state, by ventilating system nature inverted ventilation caused by extremely frigid zones daytime, night difference variation and can
The characteristics of taking human as blower reversion inverted ventilation is carried out, according to each mine actual conditions, according to natural inverted ventilation, artificial inverted ventilation two ways
It carries out:
1. natural inverted ventilation: night preferably natural inverted ventilation, generally underground operators are less at night or all withdraw Shang Jing
In the case where carry out, to reduce backdraft by the distinguished and admirable breathing influence on personnel of the increased dust-laden of stope operation area institute, and one
As the smaller auxiliary shaft inverted ventilation optionally carried out in Intake shaft of inverted ventilation air quantity, it is secondary with relative temperature higher backdraft heating
Well shaft, and downcast can close preheating unit at this time, and downcast preheats the remaining of unit institute preheated air by daytime
Fuel factor can maintain that icing phenomenon does not occur at night.
Night nature inverted ventilation by PLC control system forcibly close earth's surface it is main fan, air inlet connection lane it is auxiliary fan, preheating unit and
Air curtain unit opens middle section air return lane air door and middle section air inlet air door, closes air inlet and joins lane air door, make inverted ventilation distinguished and admirable by
According to the vent line flowing of returnairshaft, middle section air return lane, stope operation area, middle section air inlet, auxiliary shaft crossdrift, auxiliary shaft, through stope
The airflow temperature of operation area increases, and the backdraft temperature in auxiliary shaft is higher than the freezing point temperature of air, if so as to avoid
Icing freeze injury without cold air in the auxiliary shaft in the case of inverted ventilation；
2. artificial inverted ventilation: according to natural inverted ventilation, can not still solve the problems, such as auxiliary shaft freeze injury, the artificial inverted ventilation side of reselection
Formula increases Reverse, accelerates the flowing distinguished and admirable through stope operation area, the whole heat for improving backdraft and being contained.Same selection
Underground operators are less at night or carry out in the case where all withdrawing well, to reduce backdraft by stope operation area institute
Increased dust-laden is distinguished and admirable to influence the breathing of personnel.
Night inverted ventilation state opens the main fan of earth's surface by PLC control system, closes the auxiliary fan in air inlet connection lane, air curtain unit
And preheating unit, middle section air return lane air door and middle section air inlet air door are opened, air inlet is closed and joins lane air door, make inverted ventilation distinguished and admirable
It is flowed according to the vent line of returnairshaft, middle section air return lane, stope operation area, middle section air inlet, auxiliary shaft crossdrift, auxiliary shaft, through adopting
The airflow temperature of field operation area increases, and the backdraft temperature in auxiliary shaft is higher than the freezing point temperature of air, so as to avoid
If without the icing freeze injury of cold air in the auxiliary shaft in the case of inverted ventilation, if so as to avoid in the case of without inverted ventilation
The icing freeze injury of cold air in auxiliary shaft.
The annular jet air port is horizontally mounted around the circle of auxiliary shaft one, apart from earth's surface 1-2m, formed to separate auxiliary shaft it
The horizonally projected jet air curtain of earth's surface cold wind air intake.
The downcast joins the auxiliary fan in lane, downcast connection lane air door is sequentially arranged in the air inlet side in downcast connection lane,
Another air flow sensor, another wind-warm syndrome sensor for being mounted in downcast connection lane are located at the outlet air one in downcast connection lane
Side.
The distinguished and admirable dynamic pressure in outlet of the downcast connection auxiliary fan in lane being mounted in downcast connection lane can inhibit auxiliary shaft
Intake, and the intake of relative increase downcast, the increased air quantity of institute is numerically no less than because auxiliary shaft is by annular jet wind
Mouthful formed horizonally projected jet air curtain partition reduction air quantity.
A kind of antifreeze method for extremely frigid zones underground mine Intake shaft of the present invention in actual use, according to high and cold
The variation of the day and night temperature of regional underground mine leads to the wind direction Variation Features of ventilating system, realize as follows into
Point normal ventilation of period round the clock of ventilating shaft cylinder is antifreeze with inverted ventilation state:
A kind of antifreeze method for extremely frigid zones underground mine Intake shaft of the present invention after the above technical solution is adopted, has
There is following good effect:
(1) intake of Reasonable Regulation And Control downcast and auxiliary shaft, setting air curtain separate auxiliary shaft cold wind intake, and be arranged into
Ventilating shaft joins the intake of the auxiliary fan regulation downcast in lane, not only meets ventilation required airflow requirement, but also the solution auxiliary shaft of economical rationality
Freeze well problem, overcomes auxiliary shaft pre-heating system installation site in the prior art and be limited, convey hot-air process influence personnel Re Shu
The technical disadvantages such as suitable and generation career safety & health；
(2) ventilating system wind direction variation caused by the variation of extremely frigid zones day and night temperature is combined, using present invention side
The heat that back lass stream is contained is utilized in reasonable and orderly manner and is used for the antifreeze of auxiliary shaft, shows for the winterization system that method uses
The pre- thermal energy consumption for reducing pre-heating system is write, environment protecting and power-saving mine construction is met；
(3) the reasonable blower that is arranged is laid out with air door, planning vent line, setting PLC control system, automatic control blower,
Air door, the open and close for preheating unit and air curtain unit, when realizing extremely frigid zones underground mine Intake shaft point round the clock
The normal ventilation of section is antifreeze with inverted ventilation state.
Detailed description of the invention
Fig. 1 is that a kind of system structure arrangement of antifreeze method for extremely frigid zones underground mine Intake shaft of the present invention is shown
It is intended to.
Appended drawing reference are as follows: 1- auxiliary shaft；2- downcast；3- downcast joins lane；4- auxiliary shaft crossdrift；The middle section 5- air inlet；6- is adopted
Field operation area；The middle section 7- air return lane；8- returnairshaft；9- downcast joins the auxiliary fan in lane；10- downcast joins lane air door；The middle section 11- air inlet
Lane air door；The middle section 12- air return lane air door；The main fan of 13- earth's surface；14-PLC control system；15- preheats unit；16- air quantity sensing
Device；17- wind-warm syndrome sensor；18- air curtain unit；19- annular jet air port.
Specific embodiment
To better describe the present invention, with reference to the accompanying drawing to of the invention a kind of for extremely frigid zones underground mine downcast
The antifreeze method of cylinder is described in further detail.
A kind of structure arrangement of antifreeze method for extremely frigid zones underground mine Intake shaft of the present invention as shown in Figure 1
Schematic diagram finds out that auxiliary shaft 1, downcast 2, returnairshaft 8 are vertically laid, 5 horizontal layout of middle section air inlet, auxiliary shaft crossdrift 4, downcast
Join the inclination of lane 3 to lay, be connected between auxiliary shaft 1 and middle section air inlet 5 by auxiliary shaft crossdrift 4, downcast 2 and with middle section air inlet 5
Between lane 3 joined by downcast be connected to, what is fed from middle section air inlet 5 fresh is further separated into stope operation area 6, by stope
Underground waste air behind operation area 6 is discharged by middle section air return lane 7, returnairshaft 8.
A kind of winterization system that the antifreeze method for extremely frigid zones underground mine Intake shaft uses of the present invention is by pre-
Heat engine group 15, air curtain unit 18, annular jet air port 19, blower fan apparatus, air door, sensor, PLC control system 14 combine structure
At；The preheating unit 15 is arranged in the well head earth's surface of downcast 2, preheats earth's surface part cold air, through hot air pipe be sent into
In 2 pit shaft of ventilating shaft, hot air pipe prevents the hot-air of air outlet because floating hot pressing function is back to earth's surface apart from earth's surface 3-5m, heat
Air with from the not preheated cold air of 2 earth's surface of downcast mix after along downcast 2 be sent into underground；The air curtain unit 18
It is arranged in the well head earth's surface of auxiliary shaft 1；The annular jet air port 19 is arranged in the pit shaft of auxiliary shaft 1, annular jet air port 19
It is horizontally mounted around the circle of auxiliary shaft 1 one, apart from earth's surface 1-2m, to form horizonally projected jet air curtain, the earth's surface cold wind air inlet of partition auxiliary shaft 1
Stream, jet stream power are provided by air curtain unit 18, are connected between the two by air hose.The blower includes downcast connection lane
The main fan 13 of auxiliary fan 9, earth's surface, the auxiliary fan 9 in downcast connection lane are mounted in downcast connection lane 3, and exporting distinguished and admirable dynamic pressure can inhibit secondary
The intake of well 1, and the intake of relative increase downcast 2, the increased air quantity of institute is numerically no less than because auxiliary shaft 1 is annular
Jet stream air port 19 partition reduction air quantity, to meet the total intake requirement of mine；The main fan 13 of earth's surface is mounted on 8 ground of returnairshaft
On table, full mine ventilating system power is provided, the underground waste air behind stope operation area 6 is discharged.The air door includes air inlet
The lane Jing Lian air door 10, middle section air inlet air door 11, middle section air return lane air door 12, downcast connection lane air door 10 are arranged in downcast connection
In lane 3, middle section air inlet air door 11 is arranged in middle section air inlet 5, and middle section air return lane air door 12 is arranged in middle section air return lane 7
It is interior, play distinguished and admirable effect；The sensor includes one be mounted in the air duct that preheating unit 15 exports
16, wind-warm syndrome sensors 17 of air flow sensor, and another air flow sensor 16, another being mounted in downcast connection lane 3
One wind-warm syndrome sensor 17, the practical air feed air quantity of detection preheating unit 15 and wind-warm syndrome, downcast join the actual air volume in lane 3 respectively
And wind-warm syndrome, it is ensured that total intake satisfaction takes the operating personnel of operation area 6 to breathe, district ventilation heat extraction dust discharge and artillery salvo cigarette
Equal ventilations need；PLC control system 14 is connect with each sensor, receives each sensor data collected, and it is pre- to adjust control
The operation of heat engine group 15, air curtain unit 18, blower, air door.Downcast joins the auxiliary fan 9 in lane, downcast connection lane air door 10 successively cloth
The air inlet side in downcast connection lane 3 is set, another air flow sensor 16, another wind being mounted in downcast connection lane 3
Temperature sensor 17 is located at the outlet air side in downcast connection lane 3.
A kind of antifreeze method for extremely frigid zones underground mine Intake shaft of invention passes through PLC control system
It is connect with each sensor, receives each sensor data collected, and adjust control preheating unit, air curtain unit, blower, wind
Door realize as follows point round the clock period of Intake shaft normal ventilation and inverted ventilation state it is antifreeze:
1) normal ventilation state on daytime opens downcast by PLC control system 14 and joins the auxiliary fan 9 in lane, the main fan 13 of earth's surface, pre-
Heat engine group 15, air curtain unit 18 open downcast and join lane air door 10, middle section air inlet air door 11, middle section air return lane air door 12,
Micro cold wind stream is kept to flow in the intersection section of auxiliary shaft 1, auxiliary shaft crossdrift 4 to auxiliary shaft crossdrift 4 and downcast connection lane 3, thus
Avoid a large amount of earth's surface cold wind downlinks encounter auxiliary shaft 1 low temperature pit shaft avoid and occur freeze freeze well phenomenon；It is pre- to preheat unit 15
Hot-air after heat with mix from the earth's surface of downcast 2 air inlet after heat up, hot-air is along the cooled suction of 2 downlink of downcast after mixing
It receives heat to be cooled down, but mixing air temperature is consistently higher than the freezing point temperature of air, mixing air temperature is consistently higher than air
Freezing point temperature, thus prevent air downcast 2 wellbore wall freeze.Mix it is distinguished and admirable continue along downcast connection lane 3,
Middle section air inlet 5, stope operation area 6, middle section air return lane 7 flow, and most flow out earth's surface through returnairshaft 8 afterwards.
2) night inverted ventilation state
It is inverted instead by ventilating system nature inverted ventilation caused by extremely frigid zones daytime, night difference variation and the artificial blower that carries out
Wind can select nature inverted ventilation and artificial inverted ventilation to carry out inverted ventilation antifreeze according to each mine actual conditions.Night inverted ventilation state, is pressed
According to natural inverted ventilation, think that inverted ventilation two ways carries out:
1. natural inverted ventilation: night preferably natural inverted ventilation, generally underground operators are less at night or all withdraw Shang Jing
In the case where carry out, to reduce backdraft by the distinguished and admirable breathing influence on personnel of the increased dust-laden of the institute of stope operation area 6, and one
As smaller 1 inverted ventilation of auxiliary shaft optionally carried out in Intake shaft of inverted ventilation air quantity, with relative temperature higher backdraft heating
1 pit shaft of auxiliary shaft, and downcast 2 can close preheating unit 15 at this time, and downcast 2 is preheated by the preheating unit 15 on daytime
The waste heat effect of air can maintain that icing phenomenon does not occur at night.By PLC control system 14 forcibly close earth's surface it is main fan 13,
Air inlet joins the auxiliary fan 9 in lane, preheating unit 15 and air curtain unit 18, opens middle section air return lane air door 12 and middle section air inlet wind
Door 11 closes air inlet and joins lane air door 10, makes inverted ventilation distinguished and admirable according to returnairshaft 8, middle section air return lane 7, stope operation area 6, middle section
The vent line flowing of air inlet 5, auxiliary shaft crossdrift 4, auxiliary shaft 1, the airflow temperature through stope operation area 6 increases, in 1 pit shaft of auxiliary shaft
Backdraft temperature be higher than air freezing point temperature, if so as to avoid without cold in 1 pit shaft of auxiliary shaft in the case of inverted ventilation
The icing freeze injury of air；
2. artificial inverted ventilation: by the actual running results of natural inverted ventilation, being asked if freeze in the evening that can not solve 1 pit shaft of auxiliary shaft
Topic, then artificial inverted ventilation is used, increase Reverse, accelerate the flowing distinguished and admirable through stope operation area 6, the whole backdraft that improves is contained
Heat.Underground operators are less at night or carry out in the case where all withdrawing well for same selection, to reduce backdraft
By stope operation area 6 the distinguished and admirable breathing on personnel of increased dust-laden influence.
Night inverted ventilation state opens the main fan 13 of earth's surface by PLC control system 14, closes air inlet and join the auxiliary fan in lane 9, air curtain
Unit 18 and preheating unit 15, open middle section air return lane air door 12 and middle section air inlet air door 11, close air inlet and join lane wind
Door 10, makes inverted ventilation distinguished and admirable according to returnairshaft 8, middle section air return lane 7, stope operation area 6, middle section air inlet 5, auxiliary shaft crossdrift 4, auxiliary shaft
1 vent line flowing, the airflow temperature through stope operation area 6 increase, and the backdraft temperature in 1 pit shaft of auxiliary shaft is higher than air
Freezing point temperature, if so as to avoid the icing freeze injury without cold air in 1 pit shaft of auxiliary shaft in the case of inverted ventilation, to avoid
If icing freeze injury without cold air in 1 pit shaft of auxiliary shaft in the case of inverted ventilation.
The method of the present invention is in the antifreezing engineer of China extremely frigid zones non-ferrous metal underground mine mine Intake shaft
Middle application thoroughly solves the freezing proof technique problem of winter Intake shaft.
Claims (3)
1. a kind of antifreeze method for extremely frigid zones underground mine Intake shaft, it is characterised in that: the winterization system of use is
By preheating unit (15), air curtain unit (18), annular jet air port (19), blower fan apparatus, air door, sensor, PLC control system
(14) combination of uniting is constituted；The preheating unit (15) is arranged in the well head earth's surface of downcast (2), the air curtain unit
(18) it is arranged in the well head earth's surface of auxiliary shaft (1)；The annular jet air port (19) is arranged in the pit shaft of auxiliary shaft (1)；It is described
Blower include the main fan (13) of earth's surface that is mounted in the well head earth's surface of returnairshaft (8) and be mounted on downcast and join in lane (3)
Downcast joins the auxiliary fan (9) in lane；The air door includes downcast connection lane air door (10), middle section air inlet air door (11), middle section time
Air way air door (12), downcast connection lane air door (10) are arranged in downcast connection lane (3), and middle section air inlet air door (11) is arranged in
In middle section air inlet (5), middle section air return lane air door (12) is arranged in middle section air return lane (7)；The sensor includes installation
An air flow sensor (16), a wind-warm syndrome sensor (17) in the air duct of preheating unit (15) outlet, and installation
Another air flow sensor (16), another wind-warm syndrome sensor (17) in downcast connection lane (3)；PLC control system (14)
It is connect with each sensor, receives each sensor data collected, and adjust control preheating unit (15), air curtain unit
(18), blower, air door realize as follows point round the clock period of Intake shaft normal ventilation and inverted ventilation state it is antifreeze:
1) normal ventilation state on daytime, by PLC control system (14) open downcast join the auxiliary fan (9) in lane, the main fan (13) of earth's surface,
Unit (15), air curtain unit (18) are preheated, downcast connection lane air door (10), middle section air inlet air door (11), middle section go back to are opened
Air way air door (12), in the intersection of auxiliary shaft (1), auxiliary shaft crossdrift (4) to auxiliary shaft crossdrift (4) and downcast connection lane (3), section is kept
Micro cold wind stream flowing, avoids so as to avoid the low temperature pit shaft that a large amount of earth's surface cold wind downlinks encounter auxiliary shaft (1) and is tied
Freeze well phenomenon；Preheating unit (15) preheating after hot-air with from the earth's surface of downcast (2) air inlet mix after heat up, mix sky
Temperature degree is consistently higher than the freezing point temperature of air, so that air be prevented to freeze in the wellbore wall of downcast (2)；
2) night inverted ventilation state according to natural inverted ventilation, thinks that inverted ventilation two ways carries out:
1. natural inverted ventilation: forcibly closing the main fan (13) of earth's surface by PLC control system (14), air inlet joins auxiliary fan (9), preheating machine in lane
Group (15) and air curtain unit (18) open middle section air return lane air door (12) and middle section air inlet air door (11), close air inlet
The lane Xiang Lian air door (10) makes inverted ventilation distinguished and admirable according to returnairshaft (8), middle section air return lane (7), stope operation area (6), middle section air inlet
(5), the vent line flowing of auxiliary shaft crossdrift (4), auxiliary shaft (1), the airflow temperature through stope operation area (6) increase, auxiliary shaft (1) well
Backdraft temperature in cylinder is higher than the freezing point temperature of air, if so as to avoid without auxiliary shaft (1) well in the case of inverted ventilation
The icing freeze injury of cold air in cylinder；
2. artificial inverted ventilation: according to natural inverted ventilation, can not still solve the problems, such as auxiliary shaft (1) pit shaft freeze injury, the artificial inverted ventilation side of reselection
Formula；Night inverted ventilation state opens the main fan (13) of earth's surface by PLC control system (14), closes air inlet and joins auxiliary fan (9), air in lane
Curtain unit (18) and preheating unit (15), open middle section air return lane air door (12) and middle section air inlet air door (11), close into
Air way joins lane air door (10), makes inverted ventilation distinguished and admirable and enters the wind according to returnairshaft (8), middle section air return lane (7), stope operation area (6), middle section
The vent line flowing in lane (5), auxiliary shaft crossdrift (4), auxiliary shaft (1), the airflow temperature through stope operation area (6) increase, auxiliary shaft (1)
Backdraft temperature in pit shaft is higher than the freezing point temperature of air, if so as to avoid without the auxiliary shaft (1) in the case of inverted ventilation
The icing freeze injury of cold air in pit shaft, if so as to avoid the knot without cold air in auxiliary shaft (1) pit shaft in the case of inverted ventilation
Frost evil.
2. a kind of antifreeze method for extremely frigid zones underground mine Intake shaft as described in claim 1, it is characterised in that:
The annular jet air port (19) is horizontally mounted around the circle of auxiliary shaft (1) one, apart from earth's surface 1-2m, is formed to separate auxiliary shaft (1)
Earth's surface cold wind air intake horizonally projected jet air curtain.
3. a kind of antifreeze method for extremely frigid zones underground mine Intake shaft as claimed in claim 1 or 2, feature exist
In: the downcast joins the auxiliary fan (9) in lane, downcast connection lane air door (10) is sequentially arranged in the air inlet in downcast connection lane (3)
Side, another air flow sensor (16) being mounted in downcast connection lane (3), another wind-warm syndrome sensor (17) are located at air inlet
Outlet air side in the lane Jing Lian (3).
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| CN201910398240.4A CN110130968B (en) | 2019-05-14 | 2019-05-14 | Anti-freezing method for air inlet shaft of underground mine in alpine region |
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| CN201910398240.4A CN110130968B (en) | 2019-05-14 | 2019-05-14 | Anti-freezing method for air inlet shaft of underground mine in alpine region |
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| CN112049187A (en) * | 2020-09-14 | 2020-12-08 | 中国人民解放军31666部队 | High-cold area well water anti-freezing device utilizing high-pressure gas interference |
| CN113550779A (en) * | 2021-07-19 | 2021-10-26 | 中国煤炭地质总局勘查研究总院 | Anti-freezing method for air inlet shaft of underground mine in alpine region |
| CN114320422A (en) * | 2021-12-20 | 2022-04-12 | 中国恩菲工程技术有限公司 | Mine on-demand ventilation heat load control system and method |
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Address after: 243000 No. 666 Xitang Road, Ma'anshan Economic Development Zone, Anhui Province Patentee after: MAANSHAN Mine Research Institute Co.,Ltd. Patentee after: HUAWEI METAL MINERAL RESOURCE EFFICIENT RECYCLING UTILIZATION NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Address before: 243000 No. 666 Xitang Road, Ma'anshan Economic Development Zone, Anhui Province Patentee before: SINOSTEEL MAANSHAN INSTITUTE OF MINING RESEARCH Co.,Ltd. Patentee before: HUAWEI METAL MINERAL RESOURCE EFFICIENT RECYCLING UTILIZATION NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. |