CN103266909A - Dust removal method of working face coal dust in tunneling coal cutting of roadway unit and dust removal chamber - Google Patents
Dust removal method of working face coal dust in tunneling coal cutting of roadway unit and dust removal chamber Download PDFInfo
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- CN103266909A CN103266909A CN2013101786515A CN201310178651A CN103266909A CN 103266909 A CN103266909 A CN 103266909A CN 2013101786515 A CN2013101786515 A CN 2013101786515A CN 201310178651 A CN201310178651 A CN 201310178651A CN 103266909 A CN103266909 A CN 103266909A
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Abstract
The invention relates to the coal mine ventilation and safety field, particularly to a dust removal technology of underground coal mines. A dust removal method of working face coal dust in tunneling coal cutting of a roadway unit includes that a first dust capture screen (1) which covers a whole section of a tunnel is installed at a position which is 50 to 120 m far away from a tunneling working face of the tunnel; a second dust capture screen (2) which covers the whole section of the tunnel is installed at a position which is 4 to 6 m far away from the first dust capture screen (1) along a return current direction of the tunnel; the filtering apertures of the first dust capture screen (1) and the second dust capture screen (2) are 2 mm and the first dust capture screen (1) and the second dust capture screen (2) are respectively provided with rolling shutters which are used for passing through; tunnel plates which are arranged in the front of the first dust capture screen (1) and the second dust capture screen (2) and 150 to 300 mm far away from the first dust capture screen (1) and the second dust capture screen (2) are respectively provided with water curtain spraying systems (3); and the nozzles of the water curtain spraying systems (3) are towards the return current direction. The dust removal method of the working face coal dust in tunneling coal cutting of the roadway unit has the advantages of being reasonable in design, enabling the dust reduction rate to achieve 90 % and solving the problem of dust pollution inside the tunnel in production of the underground working face.
Description
Technical field
The present invention relates to coalmine ventilation and security fields, be specially the dedusting technology under the coal mine.
Background technology
One of " five evils " of Mine Dust (being mainly coal dust) conduct harm colliery worker, the serious threat worker health, and have a strong impact on working environment.Along with improving constantly of digging operation mechanization degree, in the daily manufacturing process of getting working face, the tunnel return airway is the main place of dust pollution, at present, install after the dedusting fan 4 of the treating flour dust means of return airway for the 30～100m that meets head at the distance work plane and purify water curtain (being formed by the water curtain spraying system) together, the dust that work plane is flowed out with the wind (return) is controlled.But this method for treating flour dust is because the shower nozzle atomizing effect is limited, and the water curtain closed section is incomplete, and its dust reduction rate only is 40%, still has a large amount of dust to can not get effective control, and whole piece tunnel return airway is caused severe contamination.
Summary of the invention
The problem that the dust pollution of tunnel return airway can not effectively be administered when the present invention carried out daily excavation operation in order to solve in the colliery provides a kind of tunnel unit to tunnel the dust collection method of work plane coal dust in the coal cutting.
The present invention adopts following technical scheme to realize:
The dust collection method of work plane coal dust comprises the steps: in the unit driving coal cutting of a kind of tunnel
A, apart from the roadway head 50～120m that meets head on, install and cover full face first Dust collecting net in tunnel;
B, along tunnel return direction, full face second Dust collecting net in covering tunnel is installed at distance first Dust collecting net 4～6m place; The pore size filter of described first and second Dust collecting net is 1～2mm and has the roller shutter that can open and close, confession is passed through;
C, in the place ahead of first and second Dust collecting net, apart from the back place of its 150～300mm the water curtain spraying system is installed respectively separately, the nozzle of water curtain spraying system is towards the return direction;
D, between first and second Dust collecting net, some roads height is along its periphery the water curtain spraying system to be installed apart from the tunnel part section that roadway floor 1.5～2m forms, the nozzle of water curtain spraying system is towards the return direction.
Based on said method, the dirt pocket of work plane coal dust in the unit driving coal cutting of a kind of tunnel, comprise the tunnel, install to cover in described tunnel that the tunnel is full face, first and second Dust collecting net of distance 4～6m, the pore size filter of described first and second Dust collecting net be that 1～2mm and having can open and close, for current roller shutter; In the place ahead of first and second Dust collecting net, apart from the back place of its 150～300mm the water curtain spraying system is installed respectively separately; Between first and second Dust collecting net, some roads height is apart from the tunnel part section periphery that roadway floor 1.5～2m forms the water curtain spraying system to be installed; The nozzle of described water curtain spraying system is towards the return direction.
Described water curtain spraying system can adopt existing known features, and product is varied, as long as form satisfactory water curtain.
During work, " dirt pocket " is made up of the spraying of some roads water curtain and two cover Dust collecting nets, wherein the spraying of twice water curtain is installed in the preceding 150～300mm of twice Dust collecting net place respectively, its effect is to cooperate Dust collecting net effectively to tackle coal dust, in the middle of the twice Dust collecting net, the highly water curtain spraying of installing for the tunnel part section part that forms apart from roadway floor 1.5～2m, " dirt pocket " the interior graded crossing formula of realization depositing dust has guaranteed that like this water curtain spraying can cover the full section in tunnel.The pore size filter of Dust collecting net is 1～2mm, can filter the above solid-state dust granules that forms through the water curtain spray atomization of 1～2mm.Can control by pulley on the twice Dust collecting net, 2 road roller shutters are set respectively, during the getting working face production operation, the Dust collecting net enclosing tunnel forms the dirt pocket depositing dust; Do not produce when work plane, when needing pedestrian, driving, Dust collecting net need be opened; When guaranteeing the pedestrian, strengthened the improvement to coal dust.Under effective obstruction of " dustproof room ", in the unit driving coal cutting process, full face water smoke can guarantee the effective filtration to the work plane coal dust, 90% of coal dust that return carries is caught in " dirt pocket " on the spot to go out, and for the flushing tunnel, only need the tunnel periodic flushing beyond the dirt pocket is got final product, reduced working strength of workers, add the operation of the water curtain spraying synthesis dust prevention equipment in the tunnel, guaranteed that the coal dust in the return aircourse no longer flies upward.
The present invention is reasonable in design, can effectively solve the dust pollution question in the return airway of mining face under mine production period tunnel.
Description of drawings
Fig. 1 is the structural representation of water curtain spraying system.
Fig. 2 is structure and the installation site schematic diagram of dustproof room.
Among the figure: 1-first Dust collecting net, 2-second Dust collecting net, 3-water curtain spraying system, 4-dedusting fan, 31-feed pipe, 32-water purifier, 33-ball valve, the straight-through spray seat of 34-, 35-terminal spray seat, 36-jet pipe, 37-atomizer.
The specific embodiment
Below in conjunction with accompanying drawing specific embodiments of the invention are elaborated.
Embodiment 1
As shown in Figure 2, the dust collection method of work plane coal dust comprises the steps: in the coal cutting of a kind of tunnel unit driving
A, apart from the roadway head 50～120m that meets head on, install and cover full face first Dust collecting net 1 in tunnel;
B, along tunnel return direction, full face second Dust collecting net 2 in covering tunnel is installed at 4～6m place of distance first Dust collecting net 1; Described first and second Dust collecting net 1,2 pore size filter be that 1～2mm and having can open and close, for current roller shutter;
C, in first and second Dust collecting net 1, the place ahead of 2, apart from the back place of its 150～300mm water curtain spraying system 3 is installed respectively separately, the nozzle of water curtain spraying system 3 is towards the return direction;
D, between first and second Dust collecting net 1,2, some roads height is along its periphery water curtain spraying system 3 to be installed apart from the tunnel part section that roadway floor 1.5～2m forms, the nozzle of water curtain spraying system 3 is towards the return direction.
During concrete enforcement, among the step a, described first Dust collecting net 1 is 10～15m apart from the distance of dedusting fan 4, is preferably 10 m.Distance between described first and second Dust collecting net 1,2 is 5m; In first and second Dust collecting net 1, the place ahead of 2, apart from the back place of its 200mm water curtain spraying system 3 is installed respectively separately.In the steps d, the twice height is distributed between first and second Dust collecting net 1,2 for the tunnel part section that forms apart from roadway floor 2m; Described height is equipped with water curtain spraying system 3 for dual-side and the top margin of the tunnel part section that forms apart from roadway floor 2m.
Embodiment 2
As shown in Figure 2, the dirt pocket of work plane coal dust in the unit driving coal cutting of a kind of tunnel, comprise the tunnel, install to cover in described tunnel that the tunnel is full face, first and second Dust collecting net 1,2 of distance 4～6m, described first and second Dust collecting net 1,2 pore size filter be that 1～2mm and having can open and close, for current roller shutter; In first and second Dust collecting net 1, the place ahead of 2, apart from the back place of its 150～300mm water curtain spraying system 3 is installed respectively separately; Between first and second Dust collecting net 1,2, some roads height is apart from the tunnel part section periphery that roadway floor 1.5～2m forms water curtain spraying system 3 to be installed; The nozzle of described water curtain spraying system 3 is towards the return direction.
During concrete enforcement, the distance between described first and second Dust collecting net 1,2 is 5m; In first and second Dust collecting net 1, the place ahead of 2, apart from the back place of its 200mm water curtain spraying system 3 is installed respectively separately.The twice height is distributed between first and second Dust collecting net 1,2 for the tunnel part section that forms apart from roadway floor 2m.Described height is equipped with water curtain spraying system 3 for dual-side and the top margin of the tunnel part section that forms apart from roadway floor 2m.
As shown in Figure 1, preferably, described water curtain spraying system 3 comprises water purifier 32, and the delivery port of described water purifier 32 is connected with some straight-through spray seats 34 in turn by jet pipe 36, and last straight-through spray seat 34 connects terminal spray seat 35 by jet pipe 36; On described each straight-through spray seat 34 and the terminal spray seat 35 atomizer 37 is installed; The spacing of described atomizer 37 is that 0.3～0.5m(determines according to actual conditions).
During concrete the use, the water inlet of water purifier 32 is connected with feed pipe 31, is provided with valve (for example ball valve 33) between water purifier 32 and first the straight-through spray seat 34.Connect by jet pipe 36 and to tighten after water purifier 32, straight-through spray seat 34, terminal spray seat 35(namely directly insert straight-through spray seat, terminal spray seat to jet pipe, delivery port is wanted unanimity).At first open ball valve 33, allow foreign material in the whole pipeline pour off after, close ball valve 33 again; Then atomizer 37 is screwed on straight-through spray seat 34, the terminal spray seat 35, opens ball valve 33 again, realize operate as normal by feed pipe 31.
Claims (10)
1. the dust collection method of work plane coal dust in the tunnel unit driving coal cutting is characterized in that: comprise the steps:
A, apart from the roadway head 50～120m that meets head on, install and cover full face first Dust collecting net in tunnel (1);
B, along tunnel return direction, covering full face second Dust collecting net in tunnel (2) is installed at distance first Dust collecting net (1) 4～6m place; The pore size filter of described first and second Dust collecting net (1,2) is 1～2mm and has the roller shutter that can open and close, confession is passed through;
C, in the place ahead of first and second Dust collecting net (1,2), apart from the back place of its 150～300mm water curtain spraying system (3) is installed respectively separately, the nozzle of water curtain spraying system (3) is towards the return direction;
D, between first and second Dust collecting net (1,2), some roads height is along its periphery water curtain spraying system (3) to be installed apart from the tunnel part section that roadway floor 1.5～2m forms, the nozzle of water curtain spraying system (3) is towards the return direction.
2. the dust collection method of work plane coal dust in the coal cutting of tunnel according to claim 1 unit driving, it is characterized in that: among the step a, described first Dust collecting net (1) is apart from dedusting fan 10～15m place.
3. the dust collection method of work plane coal dust in the coal cutting of tunnel according to claim 1 and 2 unit driving, it is characterized in that: the distance between described first and second Dust collecting net (1,2) is 5m; In the place aheads of first and second Dust collecting net (1,2), apart from the back place of its 200mm water curtain spraying system (3) is installed respectively.
4. the dust collection method of work plane coal dust in the coal cutting of tunnel according to claim 3 unit driving, it is characterized in that: in the steps d, the twice height is distributed between first and second Dust collecting net (1,2) for the tunnel part section that forms apart from roadway floor 2m; Described height is equipped with water curtain spraying system (3) for dual-side and the top margin of the tunnel part section that forms apart from roadway floor 2m.
5. the dirt pocket of work plane coal dust in the tunnel unit driving coal cutting, it is characterized in that: comprise the tunnel, install to cover in described tunnel that the tunnel is full face, first and second Dust collecting net (1,2) of distance 4～6m, the pore size filter of described first and second Dust collecting net (1,2) be that 1～2mm and having can open and close, for current roller shutter; In the place ahead of first and second Dust collecting net (1,2), apart from the back place of its 150～300mm water curtain spraying system (3) is installed respectively separately; Between first and second Dust collecting net (1,2), some roads height is apart from the tunnel part section periphery that roadway floor 1.5～2m forms water curtain spraying system (3) to be installed; The nozzle of described water curtain spraying system (3) is towards the return direction.
6. the dirt pocket of work plane coal dust in the coal cutting of tunnel according to claim 5 unit driving, it is characterized in that: the distance between described first and second Dust collecting net (1,2) is 5m; In the place aheads of first and second Dust collecting net (1,2), apart from the back place of its 200mm water curtain spraying system (3) is installed respectively.
7. according to the dirt pocket of work plane coal dust in claim 5 or the 6 described tunnel unit driving coal cuttings, it is characterized in that: the twice height is distributed between first and second Dust collecting net (1,2) for the tunnel part section that forms apart from roadway floor 2m.
8. according to the dirt pocket of work plane coal dust in claim 5 or the coal cuttings of 6 described tunnel units driving, it is characterized in that: described height is equipped with water curtain spraying system (3) for dual-side and the top margin of the tunnel part section that forms apart from roadway floor 1.5～2m.
9. the dirt pocket of work plane coal dust in the coal cutting of tunnel according to claim 7 unit driving is characterized in that: described height is equipped with water curtain spraying system (3) for dual-side and the top margin of the tunnel part section that forms apart from roadway floor 2m.
10. the dirt pocket of work plane coal dust in the coal cutting of tunnel according to claim 9 unit driving, it is characterized in that: described water curtain spraying system (3) comprises water purifier (32), the delivery port of described water purifier (32) is connected with some straight-through spray seats (34) in turn by jet pipe (36), and last straight-through spray seat (34) connects terminal spray seat (35) by jet pipe (36); On described each straight-through spray seat (34) and the terminal spray seat (35) atomizer (37) is installed; The spacing of described atomizer (37) is 0.3～0.5m.
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| CN201310178651.5A CN103266909B (en) | 2013-05-15 | 2013-05-15 | Dust removal method of working face coal dust in tunneling coal cutting of roadway unit and dust removal chamber |
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| CN201310178651.5A CN103266909B (en) | 2013-05-15 | 2013-05-15 | Dust removal method of working face coal dust in tunneling coal cutting of roadway unit and dust removal chamber |
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Cited By (16)
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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 |
| CN103670488A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Underground coal mine automatic dustproof spraying device |
| CN103790622A (en) * | 2014-01-21 | 2014-05-14 | 中国矿业大学 | Method for active explosion proofing and explosion suppression through high-pressure inert gas |
| CN104153806A (en) * | 2014-07-17 | 2014-11-19 | 山西晋城无烟煤矿业集团有限责任公司 | Dust suppression device |
| CN104612744A (en) * | 2014-12-23 | 2015-05-13 | 常熟市矿山机电器材有限公司 | Automatic underground coal mine spraying dust-settling system |
| CN107514275A (en) * | 2017-10-19 | 2017-12-26 | 淮南矿业(集团)有限责任公司 | Tunnelling dust prevention system |
| CN108643955A (en) * | 2018-04-26 | 2018-10-12 | 安徽工业大学 | A kind of ventilating and purifying air system and dust removal method for metal mine underground Ore-pass failure |
| CN109184776A (en) * | 2018-08-30 | 2019-01-11 | 山东大学 | A kind of full-automatic curtain dust-extraction unit in tunnel based on construction trolley and method |
| RU2678218C1 (en) * | 2018-03-26 | 2019-01-24 | Общество с ограниченной ответственностью "Партнер" | Device for production of water mist in coal mine |
| CN110130826A (en) * | 2019-07-01 | 2019-08-16 | 中煤新集能源股份有限公司 | A kind of complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention |
| CN110410075A (en) * | 2019-07-31 | 2019-11-05 | 西安科技大学 | A kind of full-mechanized roadway/constructing tunnel dust removal method and dust pelletizing system |
| RU194766U1 (en) * | 2019-09-04 | 2019-12-23 | Общество с ограниченной ответственностью "Сибирский Институт Горного Дела" (ООО "СИГД") | AUTOMATIC AIR PNEUMATIC WATER CURTAIN |
| CN110639305A (en) * | 2019-09-23 | 2020-01-03 | 山西汾西矿业（集团）有限责任公司 | Combine and dig all-round dust remover of machine |
| CN110685731A (en) * | 2019-10-31 | 2020-01-14 | 神华神东煤炭集团有限责任公司 | Traveling crane dust removal system and control method thereof |
| CN111894581A (en) * | 2020-08-26 | 2020-11-06 | 中煤科工集团重庆研究院有限公司 | Coal cutter coal cutting and dust production flow separation control dust and dust falling method |
| CN112796816A (en) * | 2021-01-27 | 2021-05-14 | 中钢集团马鞍山矿山研究总院股份有限公司 | Intelligent dust control and suppression system for metal mine excavation roadway circulating ventilation |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670488A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Underground coal mine automatic dustproof spraying device |
| 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 |
| CN103790622A (en) * | 2014-01-21 | 2014-05-14 | 中国矿业大学 | Method for active explosion proofing and explosion suppression through high-pressure inert gas |
| CN104153806A (en) * | 2014-07-17 | 2014-11-19 | 山西晋城无烟煤矿业集团有限责任公司 | Dust suppression device |
| CN104612744A (en) * | 2014-12-23 | 2015-05-13 | 常熟市矿山机电器材有限公司 | Automatic underground coal mine spraying dust-settling system |
| CN107514275A (en) * | 2017-10-19 | 2017-12-26 | 淮南矿业(集团)有限责任公司 | Tunnelling dust prevention system |
| RU2678218C1 (en) * | 2018-03-26 | 2019-01-24 | Общество с ограниченной ответственностью "Партнер" | Device for production of water mist in coal mine |
| CN108643955A (en) * | 2018-04-26 | 2018-10-12 | 安徽工业大学 | A kind of ventilating and purifying air system and dust removal method for metal mine underground Ore-pass failure |
| CN109184776A (en) * | 2018-08-30 | 2019-01-11 | 山东大学 | A kind of full-automatic curtain dust-extraction unit in tunnel based on construction trolley and method |
| CN109184776B (en) * | 2018-08-30 | 2019-12-24 | 山东大学 | Tunnel full-automatic curtain dust removal device and method based on construction trolley |
| CN110130826A (en) * | 2019-07-01 | 2019-08-16 | 中煤新集能源股份有限公司 | A kind of complete method of underground mine Driving Face in Coal Tunnel synthesis dust prevention |
| CN110410075A (en) * | 2019-07-31 | 2019-11-05 | 西安科技大学 | A kind of full-mechanized roadway/constructing tunnel dust removal method and dust pelletizing system |
| CN110410075B (en) * | 2019-07-31 | 2021-01-26 | 西安科技大学 | Fully-mechanized excavation roadway/tunnel construction dust removal method and dust removal system |
| RU194766U1 (en) * | 2019-09-04 | 2019-12-23 | Общество с ограниченной ответственностью "Сибирский Институт Горного Дела" (ООО "СИГД") | AUTOMATIC AIR PNEUMATIC WATER CURTAIN |
| CN110639305A (en) * | 2019-09-23 | 2020-01-03 | 山西汾西矿业（集团）有限责任公司 | Combine and dig all-round dust remover of machine |
| CN110685731A (en) * | 2019-10-31 | 2020-01-14 | 神华神东煤炭集团有限责任公司 | Traveling crane dust removal system and control method thereof |
| CN110685731B (en) * | 2019-10-31 | 2021-03-30 | 神华神东煤炭集团有限责任公司 | Traveling crane dust removal system and control method thereof |
| CN111894581A (en) * | 2020-08-26 | 2020-11-06 | 中煤科工集团重庆研究院有限公司 | Coal cutter coal cutting and dust production flow separation control dust and dust falling method |
| CN112796816A (en) * | 2021-01-27 | 2021-05-14 | 中钢集团马鞍山矿山研究总院股份有限公司 | Intelligent dust control and suppression system for metal mine excavation roadway circulating ventilation |
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