CN102322286A - Comprehensive dust falling method of coal mining comprehensive mechanized tunnel through return air suppression - Google Patents
Comprehensive dust falling method of coal mining comprehensive mechanized tunnel through return air suppression Download PDFInfo
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- CN102322286A CN102322286A CN201110244021A CN201110244021A CN102322286A CN 102322286 A CN102322286 A CN 102322286A CN 201110244021 A CN201110244021 A CN 201110244021A CN 201110244021 A CN201110244021 A CN 201110244021A CN 102322286 A CN102322286 A CN 102322286A
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Abstract
The invention relates to a comprehensive dust falling method of a coal mining comprehensive mechanized tunnel through return air suppression, which comprises the following steps of: arranging a pressed ventilation fan in the coal mining comprehensive mechanized tunnel to supply air and installing a dust collector on a tunneling machine to exhaust air; and uniformly distributing air with water mist on the whole cross section of a tunnel between an air outlet of the dust collector and an air supply outlet of the pressed ventilation fan, wherein the direction of the air with water mist is opposite to the tunnel return air generated by the pressed ventilation fan. Compared with the prior art, the method has the following beneficial effects that: the air with water mist and the tunnel return air are oppositely blown, because the pressure of the air with water mist is more than that of the tunnel return air, dust is prevented from flowing into the whole tunnel along with the tunnel return air, the tunnel return air can only be exhausted and filtered from one outlet (namely the air outlet of the dust collector), and the aim of dust falling is fulfilled.
Description
Technical field
The present invention relates to a kind of colliery and combine pick tunnel return air compacting integrated dust-removing method, is a kind of method that is used for the mine depositing dust.
Background technology
Along with improving constantly of driving face production scene comprehensive mechanization degree, the dust-producing amount of production scene also sharply increases, the existence of a large amount of dust; Contaminated environment not only; The harm operating personnel is physically and mentally healthy, and because coal dust has explosivity, is having a strong impact on the safety in production of mine.Though external spraying or other measurements for reduction still had the especially trickle property of a lot of dust dust to come out with the air drift in the tunnel in development machine was provided with, these dust are easy to be sucked lung by human body and impair one's health.
Patent 200910256090.X " a kind of air curtain sealing dedusting system on fully-mechanized excavating face " is though the method for mentioning has the certain significance, and drawback need to be a huge blower fan outside the tunnel, and this is unpractical often; In addition, the suction air volume of dust absorption fan is difficult to adjust identically with the air inlet air quantity of pressing the wind air duct, and it is unsettled causing the air curtain wall, and dust-laying effect is unstable.In addition now each ore deposit except according to the rules relevant place being carried out also adopting the method for water curtain dust-separation the necessary atomizing de-dusting, but from practice effect, not very good.
Summary of the invention
The problem that the present invention will solve is: to the weak point of above-mentioned prior art, provide a kind of colliery to combine pick tunnel return air compacting integrated dust-removing method.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
Pick tunnel return air compacting integrated dust-removing method is combined in a kind of colliery, it is characterized in that this method may further comprise the steps:
1) in the pick tunnel is combined in the colliery, establishes the air-supply of forced ventilation machine, dust catcher is installed on development machine is carried out air-out;
2) on the whole section in tunnel between the air outlet of dust catcher air outlet and forced ventilation machine, evenly distribute and have the wind of water smoke, this contains tunnel return air in the opposite direction of direction and the generation of forced ventilation machine of the wind of water smoke.
Step 2 wherein) adopt following mode to realize: the drift section place between dust catcher air outlet and forced ventilation machine air outlet arranges that nozzle is covered by nozzle ejection water smoke is regional to guarantee whole section; These nozzles link to each other with a cover high pressure water system; Water under high pressure is through forming the thin water smoke vectored injection district with big kinetic energy behind the nozzle; These thin atomized water spray districts with big kinetic energy can drive its inside and ambient air blows to the tunnel end; Formation contains the wind of water smoke, and the blast that this wind that contains water smoke forms is greater than the blast of tunnel return air.
Step 2 wherein) adopt following mode to realize: the drift section place layout blower fan between dust catcher air outlet and forced ventilation machine air outlet; And the air outlet place at each blower fan is provided with the low-pressure water spraying system, and the blast that this blower fan forms is greater than the blast of tunnel return air.
The present invention compared with prior art has following beneficial effect: the wind and the tunnel return air that contain water smoke are to blowing; Because the water smoke blast is greater than the blast of tunnel return air; Suppressing dust flow in the whole tunnel with tunnel return air; Force tunnel return air to filter, reach the purpose of depositing dust from an outlet (being the dust catcher air outlet) air-out.
Description of drawings
Fig. 1 is dust pelletizing system of the present invention tunnel return air distinguished and admirable generation layout when not suppressing
Fig. 2 is a dust pelletizing system of the present invention tunnel return air compacting after wind stream layout
Fig. 3 is that the A-A of Fig. 2 is to schematic cross-section.
The specific embodiment
The invention provides a kind of colliery and combine pick tunnel return air compacting integrated dust-removing method, clearer, clear and definite in order to make the object of the invention, technology path, below in conjunction with accompanying drawing and embodiment, to further explain of the present invention.
Present embodiment is that pick tunnel return air compacting integrated dust-removing method is combined in a kind of colliery; Referring to Fig. 1; Present embodiment comprises tunnel 1, dust catcher (containing the dust-absorbing filtering layer) 2, forced ventilation machine 4, the development machine 5 that has the return air compacting; In the pick tunnel is combined in the colliery, establish 4 air-supplies of forced ventilation machine, dust catcher 2 (containing the dust-absorbing filtering layer) is installed on development machine 5 is carried out air-out; The relevant distinguished and admirable generation layout in tunnel is as shown in Figure 1, can know that from Fig. 1 the air-supply of forced ventilation machine hinders the return air that produces through tunnelling face and fails to be inhaled into fully dust catcher air intake 6, and dust flow in the whole tunnel with tunnel return air.
Referring to Fig. 2; The whole section (being the cross section) in tunnel is gone up and is excited the wind that has water smoke 3 that forms by high pressure nozzle or other between dust catcher air outlet 7 and forced ventilation machine air outlet 8; Evenly distribute on the whole section in tunnel and have the wind 3 of water smoke; Forced ventilation machine 4 is arranged in the development machine 5 another side tunnels, and the wind acting surface that has water smoke is arranged on the drift section between dust catcher air outlet and the forced ventilation machine air outlet; The air-supply of forced ventilation machine hinders through tunnelling face and produces return air; To blowing, this contains tunnel return air in the opposite direction of direction and the generation of forced ventilation machine of the wind of water smoke, referring to Fig. 3 with the wind 3 that contains water smoke and tunnel return air; The tunnel sectional view that Fig. 3 is; And be to look by the direction in the export-oriented tunnel, tunnel, so " X " symbology among Fig. 3 is the wind that has water smoke, ". " symbology among Fig. 3 be tunnel return air.Here to the mode of blowing multiple mode can be arranged, illustrate: 1) arrange that like the drift section place between dust catcher air outlet and forced ventilation machine air outlet nozzle is covered by nozzle ejection water smoke zone to guarantee whole section.These nozzles link to each other with a cover high pressure water system, and water under high pressure is through forming the thin water smoke vectored injection district with big kinetic energy behind the nozzle.These thin atomized water spray districts with big kinetic energy can drive its inside and ambient air blows to the tunnel end, form the wind that contains water smoke.The blast that this wind that contains water smoke forms is greater than the blast of tunnel return air; 2) arrange blower fan like the drift section place between dust catcher air outlet and forced ventilation machine air outlet, and the low-pressure water spraying system is set at the air outlet place of each blower fan.The blast that this blower fan forms is greater than the blast of tunnel return air.This implementation power consumption is relatively low.The high velocity air that blower fan blows out is through the low pressure water spray system time; With the disturbance hydrone and carry certain density hydrone and continue to keep inertia to move ahead; And the kinetic energy of tunnel return air air weakens owing to the absorption of having passed through development end, and promptly thin water smoke blast is greater than tunnel return air blast.Above-mentioned two kinds of implementations of giving an example all can suppress mine dust and flow in the whole tunnel with tunnel return air, force the tunnel return air can only be from a dust catcher (containing the dust-absorbing filtering layer) air-out, thereby reach the effect of depositing dust.
For feasibility and the validity of verifying technical scheme of the present invention, done following experiment respectively:
1) in September, 2010 in the Huaibei, Anhui driving face in coal mine test.What this work plane used is northern heavy industry EBZ200 type development machine, hydraulic shield support supporting.Ature of coal belongs to anthracite, hydrophily is poor.Cause the high concentrate dust that adopts general measurements for reduction can not reduce driving face effectively.For this reason, on this driving face, adopted the mentioned integrated dust-removing scheme of the present invention.The high pressure water system parameter is: hydraulic pressure 200bar, and discharge 50L/min, the nozzle number is 10.The forced ventilation machine adopts FBD series colliery with explosion-proof forced to the axial flow rotary booster.
In the survey, to development machine driver place and development machine return side 10m place, measured the total dust concentration that adopts integrated dust-removing scheme front and back respectively, test result is following:
2) in May, 2011 in the Yulin Newly-built Coal Mine digging laneway test.What used in this tunnel is 31 heavy industry EBZ260H type stone head development machines, hydraulic shield support supporting.Have certain rock stratum in the coal dust, so have certain rock dust granules in the dust, hydrophily is better.On this fully-mechanized mining working, adopted the mentioned integrated dust-removing scheme of the present invention.The high pressure water system parameter is: hydraulic pressure 90bar, and discharge 150L/min, the nozzle number is 15.The forced ventilation machine adopts YBT series colliery with the forced axial flow booster of flame-proof type.
In the survey, to development machine driver place and development machine return side 8m place, measured the total dust concentration that adopts integrated dust-removing scheme front and back respectively, test result is following:
Claims (3)
1. pick tunnel return air compacting integrated dust-removing method is combined in a colliery, it is characterized in that this method may further comprise the steps:
1) in the pick tunnel is combined in the colliery, establishes the air-supply of forced ventilation machine, dust catcher is installed on development machine is carried out air-out;
2) on the whole section in tunnel between the air outlet of dust catcher air outlet and forced ventilation machine, evenly distribute and have the wind of water smoke, this contains tunnel return air in the opposite direction of direction and the generation of forced ventilation machine of the wind of water smoke.
2. pick tunnel return air compacting integrated dust-removing method is combined in a kind of colliery as claimed in claim 1; It is characterized in that wherein step 2) adopt following mode to realize: the drift section place between dust catcher air outlet and forced ventilation machine air outlet arranges that nozzle is covered by nozzle ejection water smoke zone to guarantee whole section; These nozzles link to each other with a cover high pressure water system; Water under high pressure is through forming the thin water smoke vectored injection district with big kinetic energy behind the nozzle; These thin atomized water spray districts with big kinetic energy can drive its inside and ambient air blows to the tunnel end; Formation contains the wind of water smoke, and the blast that this wind that contains water smoke forms is greater than the blast of tunnel return air.
3. pick tunnel return air compacting integrated dust-removing method is combined in a kind of colliery as claimed in claim 1; It is characterized in that wherein step 2) adopt following mode to realize: the drift section place between dust catcher air outlet and forced ventilation machine air outlet arranges blower fan; And the air outlet place at each blower fan is provided with the low-pressure water spraying system, and the blast that this blower fan forms is greater than the blast of tunnel return air.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912277A (en) * | 2014-04-01 | 2014-07-09 | 西安科技大学 | High-efficiency dust fall device and method of underground coal mine fully-mechanized excavating tunnel |
| CN104196534A (en) * | 2014-08-19 | 2014-12-10 | 山东科技大学 | Three-dimensional multidirectional rotational flow air curtain dust settling device and method for fully-mechanized excavation face |
| RU2558068C1 (en) * | 2014-06-27 | 2015-07-27 | Дарья Анатольевна Трубицына | Method of prevention of ignition of methane-air mixture |
| CN109113783A (en) * | 2018-08-25 | 2019-01-01 | 许明 | A kind of gas extraction device for an upper corner of a coal mining working face |
| CN112483084A (en) * | 2020-11-10 | 2021-03-12 | 山东科技大学 | Fully-closed air curtain dust control method for fully-mechanized coal mining face |
| CN112879068A (en) * | 2021-03-23 | 2021-06-01 | 山东科技大学 | Fully-mechanized excavating face large vortex dust collection-cyclone wind distribution domain division system and domain division ventilation dust control method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912277A (en) * | 2014-04-01 | 2014-07-09 | 西安科技大学 | High-efficiency dust fall device and method of underground coal mine fully-mechanized excavating tunnel |
| RU2558068C1 (en) * | 2014-06-27 | 2015-07-27 | Дарья Анатольевна Трубицына | Method of prevention of ignition of methane-air mixture |
| CN104196534A (en) * | 2014-08-19 | 2014-12-10 | 山东科技大学 | Three-dimensional multidirectional rotational flow air curtain dust settling device and method for fully-mechanized excavation face |
| CN104196534B (en) * | 2014-08-19 | 2016-05-18 | 山东科技大学 | A kind of 3 D multi-directional eddy flow air curtain device for reducing dust and method for fully mechanized workface |
| CN109113783A (en) * | 2018-08-25 | 2019-01-01 | 许明 | A kind of gas extraction device for an upper corner of a coal mining working face |
| CN112483084A (en) * | 2020-11-10 | 2021-03-12 | 山东科技大学 | Fully-closed air curtain dust control method for fully-mechanized coal mining face |
| CN112879068A (en) * | 2021-03-23 | 2021-06-01 | 山东科技大学 | Fully-mechanized excavating face large vortex dust collection-cyclone wind distribution domain division system and domain division ventilation dust control method |
| CN112879068B (en) * | 2021-03-23 | 2022-10-04 | 山东科技大学 | Fully-mechanized excavating face large vortex dust collection-cyclone wind distribution domain division system and domain division ventilation dust control method |
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Application publication date: 20120118 |