CN103266909B - 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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- CN103266909B CN103266909B CN201310178651.5A CN201310178651A CN103266909B CN 103266909 B CN103266909 B CN 103266909B CN 201310178651 A CN201310178651 A CN 201310178651A CN 103266909 B CN103266909 B CN 103266909B
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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 of underground coal mine.
Background technology
Mine Dust (being mainly coal dust) as one of " five evil " of harm Coal Mine Staff, 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, tunnel return airway is the main place of dust pollution, at present, the treating flour dust means of return airway are install one purification water curtain (being formed by water curtain spraying system) after the dedusting fan 4 of the 30 ~ 100m that meets head on apart from work plane, and dust work plane being flowed out with the wind to (return) controls.But, this method for treating flour dust due to shower nozzle atomizing effect limited, water curtain closed section is complete, and its dust reduction rate is only 40%, still has a large amount of dust to can not get effective control, causes severe contamination to whole piece tunnel return airway.
Summary of the invention
The problem that when the present invention carries out daily excavation operation to solve in colliery, the dust pollution of tunnel return airway can not effectively be administered, provides the dust collection method of work plane coal dust in the unit driving coal cutting of a kind of tunnel.
The present invention adopts following technical scheme to realize:
In the unit driving coal cutting of tunnel, a dust collection method for work plane coal dust, comprises the steps:
A, distance roadway head are met head on 50 ~ 120m, install the first Dust collecting net covering roadway full-fracture-surfacanchoring-rod;
B, along return direction, tunnel, distance first Dust collecting net 4 ~ 6m place, install covering roadway full-fracture-surfacanchoring-rod the second Dust collecting net; The pore size filter of first and second Dust collecting net described is 1 ~ 2mm and has that can open and close, that confession is current roller shutter;
C, install water curtain spraying system in the front of first and second Dust collecting net, separately respectively apart from the back place of its 150 ~ 300mm, the nozzle of water curtain spraying system is towards return direction;
D, between first and second Dust collecting net, some roads height is that the tunnel part section that distance roadway floor 1.5 ~ 2m is formed installs water curtain spraying system along its periphery, and the nozzle of water curtain spraying system is towards 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 tunnel, install in described tunnel cover roadway full-fracture-surfacanchoring-rod, first and second Dust collecting net of distance 4 ~ 6m, the pore size filter of first and second Dust collecting net described be 1 ~ 2mm and have can open and close, for current roller shutter; Apart from the back place of its 150 ~ 300mm, water curtain spraying system is installed in the front of first and second Dust collecting net, separately respectively; Between first and second Dust collecting net, some roads height is that the tunnel part section periphery that distance roadway floor 1.5 ~ 2m is formed installs water curtain spraying system; The nozzle of described water curtain spraying system is towards 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 sprayed by some roads water curtain and two cover Dust collecting nets form, wherein the spraying of twice water curtain is arranged on 150 ~ 300mm place before twice Dust collecting net respectively, its effect coordinates Dust collecting net effectively to tackle coal dust, the water curtain in the middle of twice Dust collecting net, highly installed for the tunnel part section part formed apart from roadway floor 1.5 ~ 2m is sprayed, " dirt pocket " the interior graded crossing formula of realization depositing dust, which ensure that water curtain spraying can cover the tunneling boring in tunnel.The pore size filter of Dust collecting net is 1 ~ 2mm, can filter the solid-state dust granules that 1 ~ more than 2mm is formed through water curtain spray atomization.Twice Dust collecting net can be controlled by pulley, arrange 2 road roller shutters respectively, during getting working face production operation, Dust collecting net enclosing tunnel forms dirt pocket depositing dust; When work plane is not produced, when needing pedestrian, driving, Dust collecting net needs to open; The improvement to coal dust is strengthened while ensureing pedestrian.Under effective obstruction of " dustproof room ", in unit driving coal cutting process, full face water smoke can ensure the effective filtration to work plane coal dust, 90% of the coal dust that return is carried is caught on the spot and is gone out in " dirt pocket ", and for flushing tunnel, only to the tunnel periodic flushing beyond dirt pocket, the labour intensity of workman need be reduced, add the operation of the water curtain spraying synthesis dust prevention equipment in tunnel, ensure that the coal dust in return aircourse no longer flies upward.
The present invention is reasonable in design, effectively can solve the dust pollution question in the return airway of mining face under mine production period tunnel.
Accompanying drawing explanation
Fig. 1 is the structural representation of water curtain spraying system.
Fig. 2 is structure and the installation site schematic diagram of dustproof room.
In 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, 34-leads directly to spray seat, 35-terminal spray seat, 36-jet pipe, 37-atomizer.
Detailed description of the invention
Below in conjunction with accompanying drawing, specific embodiments of the invention are described in detail.
embodiment 1
As shown in Figure 2, in the coal cutting of a kind of tunnel unit driving, the dust collection method of work plane coal dust, comprises the steps:
A, distance roadway head are met head on 50 ~ 120m, install the first Dust collecting net 1 covering roadway full-fracture-surfacanchoring-rod;
B, along return direction, tunnel, distance the first Dust collecting net 14 ~ 6m place, install covering roadway full-fracture-surfacanchoring-rod the second Dust collecting net 2; The pore size filter of first and second Dust collecting net 1,2 described is 1 ~ 2mm and has that can open and close, that confession is current roller shutter;
C, install water curtain spraying system 3 in the front of first and second Dust collecting net 1,2, separately respectively apart from the back place of its 150 ~ 300mm, the nozzle of water curtain spraying system 3 is towards return direction;
D, between first and second Dust collecting net 1,2, some roads height is that the tunnel part section that distance roadway floor 1.5 ~ 2m is formed installs water curtain spraying system 3 along its periphery, and the nozzle of water curtain spraying system 3 is towards return direction.
During concrete enforcement, in 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 first and second Dust collecting net 1,2 described is 5m; Apart from the back place of its 200mm, water curtain spraying system 3 is installed in the front of first and second Dust collecting net 1,2, separately respectively.In steps d, twice height is that the tunnel part section that distance roadway floor 2m is formed is distributed between first and second Dust collecting net 1,2; Described height is that the dual-side of the tunnel part section that distance roadway floor 2m is formed and top margin are provided with water curtain spraying system 3.
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 tunnel, install in described tunnel cover roadway full-fracture-surfacanchoring-rod, first and second Dust collecting net 1,2 of distance 4 ~ 6m, the pore size filter of first and second Dust collecting net 1,2 described be 1 ~ 2mm and have can open and close, for current roller shutter; Apart from the back place of its 150 ~ 300mm, water curtain spraying system 3 is installed in the front of first and second Dust collecting net 1,2, separately respectively; Between first and second Dust collecting net 1,2, some roads height is that the tunnel part section periphery that distance roadway floor 1.5 ~ 2m is formed installs water curtain spraying system 3; The nozzle of described water curtain spraying system 3 is towards return direction.
During concrete enforcement, the distance between first and second Dust collecting net 1,2 described is 5m; Apart from the back place of its 200mm, water curtain spraying system 3 is installed in the front of first and second Dust collecting net 1,2, separately respectively.Twice height is that the tunnel part section that distance roadway floor 2m is formed is distributed between first and second Dust collecting net 1,2.Described height is that the dual-side of the tunnel part section that distance roadway floor 2m is formed and top margin are provided with water curtain spraying system 3.
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; Described each straight-through spray seat 34 and terminal spray seat 35 are provided with atomizer 37; The spacing of described atomizer 37 is that 0.3 ~ 0.5m(determines according to actual conditions).
During concrete use, the water inlet of water purifier 32 is connected with feed pipe 31, is provided with valve (such as ball valve 33) between water purifier 32 and first straight-through spray seat 34.Connect water purifier 32 by jet pipe 36, straight-through spray seat 34, terminal spray seat 35(tighten after namely jet pipe directly being inserted straight-through spray seat, terminal spray seat, delivery port will unanimously).First open ball valve 33, after allowing the foreign material in whole pipeline pour off, then close ball valve 33; Then atomizer 37 is screwed in straight-through spray seat 34, terminal spray seat 35, then opens ball valve 33, realize normal work by feed pipe 31.
Claims (10)
1. tunnel unit tunnels a dust collection method for work plane coal dust in coal cutting, it is characterized in that: comprise the steps:
A, distance roadway head are met head on 50 ~ 120m, install the first Dust collecting net (1) covering roadway full-fracture-surfacanchoring-rod;
B, along return direction, tunnel, distance first Dust collecting net (1) 4 ~ 6m place, install covering roadway full-fracture-surfacanchoring-rod the second Dust collecting net (2); The pore size filter of first and second Dust collecting net described (1,2) is 1 ~ 2mm and has that can open and close, that confession is current roller shutter;
C, first and second Dust collecting net (1,2) front, 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 return direction;
D, between first and second Dust collecting net (1,2), some roads height is that the tunnel part section that distance roadway floor 1.5 ~ 2m is formed installs water curtain spraying system (3) along its periphery, and the nozzle of water curtain spraying system (3) is towards return direction.
2. tunnel according to claim 1 unit tunnels the dust collection method of work plane coal dust in coal cutting, it is characterized in that: in step a, described first Dust collecting net (1) distance dedusting fan 10 ~ 15m place.
3. tunnel according to claim 1 and 2 unit tunnels the dust collection method of work plane coal dust in coal cutting, it is characterized in that: the distance between first and second Dust collecting net described (1,2) is 5m; Water curtain spraying system (3) is installed in front in first and second Dust collecting net (1,2), the back place apart from its 200mm respectively.
4. tunnel according to claim 3 unit tunnels the dust collection method of work plane coal dust in coal cutting, it is characterized in that: in steps d, and twice height is that the tunnel part section that distance roadway floor 2m is formed is distributed between first and second Dust collecting net (1,2); Described height is that the dual-side of the tunnel part section that distance roadway floor 2m is formed and top margin are provided with water curtain spraying system (3).
5. the dirt pocket of work plane coal dust in tunnel unit driving coal cutting, it is characterized in that: comprise tunnel, install in described tunnel cover roadway full-fracture-surfacanchoring-rod, first and second Dust collecting net (1,2) of distance 4 ~ 6m, the pore size filter of first and second Dust collecting net described (1,2) be 1 ~ 2mm and have can open and close, for current roller shutter; First and second Dust collecting net (1,2) front, 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 that the tunnel part section periphery that distance roadway floor 1.5 ~ 2m is formed installs water curtain spraying system (3); The nozzle of described water curtain spraying system (3) is towards return direction.
6. tunnel according to claim 5 unit tunnels the dirt pocket of work plane coal dust in coal cutting, it is characterized in that: the distance between first and second Dust collecting net described (1,2) is 5m; Water curtain spraying system (3) is installed in front in first and second Dust collecting net (1,2), the back place apart from its 200mm respectively.
7. the dirt pocket of work plane coal dust in the tunnel unit driving coal cutting according to claim 5 or 6, is characterized in that: twice height is that the tunnel part section that distance roadway floor 2m is formed is distributed between first and second Dust collecting net (1,2).
8. the dirt pocket of work plane coal dust in the tunnel unit driving coal cutting according to claim 5 or 6, is characterized in that: described height is that the dual-side of the tunnel part section that distance roadway floor 1.5 ~ 2m is formed and top margin are provided with water curtain spraying system (3).
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 that the dual-side of the tunnel part section that distance roadway floor 2m is formed and top margin are provided with water curtain spraying system (3).
10. tunnel according to claim 9 unit tunnels the dirt pocket of work plane coal dust in coal cutting, 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); Described each straight-through spray seat (34) and terminal spray seat (35) are provided with atomizer (37); The spacing of described atomizer (37) is 0.3 ~ 0.5m.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN103266909B true CN103266909B (en) | 2015-05-06 |
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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 |
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| 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 |
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