Device for separating air flows in shaft ventilation networks

FIELD: mining industry.

SUBSTANCE: device has air feeding channels, positioned between support and coal massif and ventilator with pipe for sucking air away. Additionally device is provided with curtain of transparent plastic profiles with load, positioned in lower portion of curtain, positioned on carrying ropes, connected to driving drum. The latter is held on ceiling of support section and provided with electric drive with automatic and manual control. Lower portion of curtain enters a space, formed by walling of cable packer and grating. Ventilator, moved with extraction of coal massif, is positioned in ascending air stream in ventilation drift. Width of curtain equals width of support section, and length is in 1.3 times greater than vertical height of support.

EFFECT: higher efficiency.

4 dwg

 

The invention relates to mining, mining and construction industry and can be used to ventilate the longwall mining in the development of mineral resources with a large release.

The well-known scheme of ventilation with a serial dilution of hazards (Ushakov short circuit, Burdakov A.S., Beams L., Medvedev I.I., Aerology enterprises - M.: Nedra, 1987, s). Fresh air is supplied by haulage drift, is distributed between clearing face and goaf and removed through the ventilation drift. A disadvantage of this scheme is the low intensity of removal of methane from the treatment space and the removal of methane in the upper part of the lava and the ventilation drift.

The well-known scheme of ventilation with separate dilution hazards (Ushakov short circuit, Burdakov A.S., Beams L., Medvedev I.I., Aerology enterprises - M.: Nedra, 1987, s). Fresh air is supplied by haulage drift, is distributed between clearing face and goaf and removed through the vent passage, and the air in the ventilation passage is diluted with fresh stream. A disadvantage of this scheme is the low intensity of removal of methane from the treatment space and the need to maintain excavations in the used space.

It is known a device for the separation of air flows shahtnyx ventilation networks adopted as a prototype (the application for the invention of the Russian Federation, No. 93006328, IPC E 21 F 1/14). The technical result is achieved in that the supply and exhaust air in different parts of the mine occurs separately, while all devices are designed for operation with gas lighter than air (methane), if they appear, while the ceiling has a semicircular shape with a groove in the center, sloping towards the traps for explosive gases. Air supply devices are installed in the recess on the floor of the face opposite the tabs in the center between the two traps in the horizontal position of the face, and by tilting the bottom up - after the traps down in front of the trap. When this pipe suction and air supply are laid under the ground, allowing blockages do not cut off the supply and exhaust air in the cut out areas of the mine. The disadvantages of this device are the complexity of the installation and the inability to use the process of sewage extraction for the removal of methane.

The technical result of the invention is the ability to use the device in stoping coal, increase the intensity of removal of methane due to the separation of air flow and increase the velocity of the air in the clearing space.

The technical result is achieved in that a device for the separation of air flow in the mine ventilation networks containing the analy air supply, located between the lining and carbon array blower with pipe air suction, according to the invention is equipped with a veil of transparent plastic profiles with the load located in the lower part of the veil that is placed on the supporting cables associated with driving drum mounted on the overlapping sections of the support and provided with a drive with automatic and manual control, and the lower part of the veil is included in the gap formed by the enclosure of the cable-handling vessel and grill guard, and the fan moved as mining coal massif, is located on the outgoing stream of air in the ventilation passage, the width of the veil equal to the width of the shields, and the length in 1.3 times more vertical supports.

The application of the proposed method in comparison with the prototype allows to use the device in stoping coal, to increase the rate of removal of methane due to the separation of air flow and increase the velocity of the air in the clearing space.

A device for the separation of air flow in the mine ventilation networks is illustrated by drawings, where figure 1 shows a diagram of installation of the device on the support, the section a-a, figure 2 is a diagram of the device during the mining of coal of the array cross-section B-B, figure 3 shows the device, the section G-G, figure 4 is zobrazeno device, section b-In where:

1 - hydraulic strut supports;

2 - gidrotartrat;

3 is a front thrust;

4 - rear thrust;

5 - lateral overlap;

6 - blocking shield;

7 - base lining;

8 - pull scraper conveyor;

9 - scraper conveyor;

10 - drum veils;

11 is a longitudinal axis of the drum;

12 is a transparent plastic profiles;

13 - filling the pipeline;

14 - harvester;

15 - screws harvester;

16 - cable;

17 - carbon array;

18 - filling array;

19 - capital bias;

20 - precinct slope;

21 - haulage drift;

22 - vent drift;

23 - longwall face;

24 - fan;

25 - the direction of movement of fresh air;

26 - the direction of movement of the outgoing air stream;

27 - a pipe for exhaust air;

28 - the goods;

29 - carrying cables;

30 - fencing cable-handling vessel;

31 - lattice fencing;

32 - bed;

33 - the drive drum.

A device for the separation of air flow in the mine ventilation networks intended primarily for testing vysokogazonosnyh coal seams. Development of coal deposits is accompanied by a large discharge of explosive and combustible gas methane, which at the breaking of coal put restrictions on the load on cleaning mine - gas vent barrier. At present the time due to the significant depth of mining is allocated an increasing amount of methane (average methane emission rate mines in Donetsk and Karaganda basins, respectively, 30 and 90 m 3/min). To deal with such quantities of methane in the traditional way (dilution of methane and air removal from the mine ventilation air) in many cases is not possible due to the necessity of submission to the mine is extremely large amount of air and exceeding the permissible speed of its movement through the workings. Increase podvigina love the layers with high gazoobilnostju and the expansion of the scope of complexes with hydraulic roof supports require the adoption of measures to reduce gazoobilnosti. Preliminary degassing of the mined seam wells and improving the degassing goaf not always reduces gazoobilnosti to an acceptable level, since the largest amount of gas released during the breaking of the coal combine. The amount of air supplied to the treatment face, governed by safety Rules maximum allowable speed air jet (not more than 4 m/s). Due to the separation of the air streams passing through the treatment space into two areas - excavation (between the carbon array and enclosure of the cable-handling vessel) and human (grills) may increase the amount of air passing in close proximity to the coal of the array. The minimum amount of air passing through the human direction of the people, calculated from the minimum allowable speed air safety (0.25 m/s).

Carbon array 17 prepare capital 19 precinct 20 slopes, haulage 21 and vent 22 drifts. Then spend a split furnace, installed in her mechanized hydraulic shoring and form a longwall working face 23. Work out the coal array 17. Hydraulic stand 1 supports, lateral overlapping 5, the overlapping sections of the support 6 and the base roof support 7 support rocks of the hanging side. Shunting operations associated with the movement of the harvester 14 with screws 15, is performed with the aid of the hydraulic cylinder 2, the front thrust 3, the rear thrust 4 and pull scraper conveyor 8. The winder has 16 pave cable between the conveyors 9 and the enclosure of the cable-handling vessel 30. Filling the array 18 is erected with the help of the filling pipe 13. The drum 10 of the veil is placed on the longitudinal axis 11 of the drum electric drum 33, which is inserted into a frame 32. A frame 32 is rigidly fixed to the overlapping sections of the support 6. Transparent high-strength plastic profiles 12 connected between the drum 10 of the veil and the load bearing 28 cables 29. Width obtained veils equal to the width of the shields, and the length 1.3 times the vertical height of the lining to provide the necessary moving kr is PI stock. The lower part of the veil is included in the gap located on the longitudinal axis 11 of the drum. The gap formed by the enclosure of the cable-handling vessel 30 and grill guard 31 to effectively counteract the loads from the movement of air. The veil on each section of powered roof supports has the actuator 33 of the drum with automatic and manual control. To enable visual monitoring of the process of blasting coal profiles 12 is transparent.

A device for the separation of air flow in the mine ventilation networks operates as follows. The air serves for capital bias 19, further haulage roadway 21. Then the air passes through the longwall working face 23 and podverhaetsya fresh stream of the ventilation passage 22. The direction of movement of the fresh air stream 25 and the direction of movement of the outgoing air stream 26 is shown in figure 2. The veil being in a lowered position, creating a solid wall separating the longwall working face 23 in length. The exhaust air is conducted from the channel formed between the carbon array 17 and the curtains through the pipes 27 to the suction of air by the fan 24, roaming as coal mining array 17 and located in the direction of the outgoing jet 26 in the ventilation passage 22. By increasing the air flow passing through the extraction direction (between the coal array 17 and curtains), is the most effective degassing of coal thump of hands. In the human direction (between the curtain and the lining) support the air flow rate based on the minimum allowable speed air jet.

The use of this device for the separation of air flow in the mine ventilation networks provides the following benefits:

- possibility of use in stoping coal;

- increasing the intensity of removal of methane;

- increasing burden on the working site;

- improving the safety of mining operations;

- reducing the cost of coal.

A device for the separation of air flow in the mine ventilation networks containing channels air supply, located between the lining and carbon array blower with pipe air suction, characterized in that it is equipped with a veil of transparent plastic profiles with the load located in the lower part of the veil that is placed on the supporting cables associated with driving drum mounted on the overlapping sections of the support and provided with a drive with automatic and manual control, and the lower part of the veil is included in the gap formed by the enclosure of the cable-handling vessel and grill guard, and the fan moved as mining coal massif, is located on the outgoing the true air in the ventilation drift, the width of the veil equal to the width of the shields, and the length 1.3 times the vertical height of the lining.



 

Same patents:

FIELD: mining industry.

SUBSTANCE: method includes feeding fresh air along air ducts due to generic depression, and output stream is taken partially through supported mines due to generic depression and partially - through extracted space of extracted or previously extracted column by means of gas-sucking plant. Methane support control in fresh and output streams is maintained. From the surface into air duct a ventilation shaft is drilled and additional fresh air is fed therein in same direction with main stream. Adjustment of methane containment in air streams at extraction portion is performed by changing amount of air, fed additionally.

EFFECT: increased volume of fed fresh air without substantial reconstruction of ventilation system.

1 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: device has working and reserve ventilators, each of which has diffuser with rotary branch pipe, electric engine, connected to ventilator by transmission shaft via toothed sleeves, and devices, covering input and output of ventilator. Additionally plant is provided with doubled input box, made in form of mated individual boxes of working and reserve ventilators by rotating these to face each other relatively to vertical planes, passing through axes of ventilators rotation. Side inner walls of ventilators form up a common rib, on which axis of special piece is placed, in turns covering branch pipes of input boxes of working and reserve ventilators. When using ventilator plant near residential or administration buildings its output box is provided by muffler and cowl, and output branch pipes of ventilators are provided with controlling blades.

EFFECT: lower costs, higher durability.

2 cl, 4 dwg

FIELD: mining industry.

SUBSTANCE: device has working and reserve ventilators, placed in ventilator chamber. By means of connecting channels ventilators are connected to air-conducting and air-draining channels, which com together in triple-output branch pipes, connected via ventilation channels to general mine ventilation network. Ventilation chamber is separated from air-conducting channels by longitudinal vertical wall. Air-conducting channels are made in form of one mine, separated by longitudinal horizontal wall between triple branch-pipes. Means for reversing air flow are mounted in branch pipes. In connection channels on force or suck-in side of ventilators cutting means are mounted. Assembling drift is connected to end of ventilator chamber.

EFFECT: higher safety, lower costs.

3 dwg

FIELD: mining industry.

SUBSTANCE: method includes use of screw-drilling machine for driving of several first ventilation shafts in ore body and driving several second shafts, while second and each second shaft crosses, at least, one matching first shaft, forming first support walls, supporting ceiling. First supporting ceilings consist of ore body zones between neighboring second shafts, each first support wall has portion of at least one first shaft, passing horizontally through it. Horizontal channels are formed, each of which is placed transversely to matching second shaft between appropriate portions of first shaft, formed in adjacent support walls, for forming of group of continuous ventilation shafts. Second shafts are filled for forming second supporting walls, supporting well ceiling, and first supporting walls are extracted. First ventilation shafts can be made parallel to each other. Second shafts may be directed perpendicularly relatively to first ventilation shafts. In ore body air-outlet and air-inlet ventilation mines can be formed, placed at distance from each other along horizontal line, while first or each first ventilation shaft passes through portion of ore body between air-inlet and air-outlet ventilation mines. Driving of second or each second shaft can be performed by cutting machine, or by drilling or explosive mining.

EFFECT: higher efficiency.

7 cl, 11 dwg

FIELD: mining industry.

SUBSTANCE: pipeline has sections made in form of hermetically interconnected outer and inner covers, mounted with space relatively to each other, and main ventilator. On different ends of pipeline flow meter and additional ventilator are mounted, the latter having adjustable characteristics and being connected to inter-pipe space by branch pipe. In inner cover apertures are made placed along radius and along length of cover. Air comes from apertures to air channel and forms additional air flow near walls of inner cover, which lowers or heightens aerodynamic resistance of ventilation pipeline.

EFFECT: higher efficiency, higher safety, lesser costs.

2 dwg

The invention relates to the mining industry and can be used in systems of ventilation of mines

The invention relates to the mining industry and can be used in the construction of mining enterprises and engineering structures, including in areas of permafrost

The invention relates to the mining industry and can be used for ventilation of mines

The invention relates to mining, in particular for ventilation of mine workings

The invention relates to mining and can be used in the preparation of the mining fields

FIELD: mining industry.

SUBSTANCE: pipeline has sections made in form of hermetically interconnected outer and inner covers, mounted with space relatively to each other, and main ventilator. On different ends of pipeline flow meter and additional ventilator are mounted, the latter having adjustable characteristics and being connected to inter-pipe space by branch pipe. In inner cover apertures are made placed along radius and along length of cover. Air comes from apertures to air channel and forms additional air flow near walls of inner cover, which lowers or heightens aerodynamic resistance of ventilation pipeline.

EFFECT: higher efficiency, higher safety, lesser costs.

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes use of screw-drilling machine for driving of several first ventilation shafts in ore body and driving several second shafts, while second and each second shaft crosses, at least, one matching first shaft, forming first support walls, supporting ceiling. First supporting ceilings consist of ore body zones between neighboring second shafts, each first support wall has portion of at least one first shaft, passing horizontally through it. Horizontal channels are formed, each of which is placed transversely to matching second shaft between appropriate portions of first shaft, formed in adjacent support walls, for forming of group of continuous ventilation shafts. Second shafts are filled for forming second supporting walls, supporting well ceiling, and first supporting walls are extracted. First ventilation shafts can be made parallel to each other. Second shafts may be directed perpendicularly relatively to first ventilation shafts. In ore body air-outlet and air-inlet ventilation mines can be formed, placed at distance from each other along horizontal line, while first or each first ventilation shaft passes through portion of ore body between air-inlet and air-outlet ventilation mines. Driving of second or each second shaft can be performed by cutting machine, or by drilling or explosive mining.

EFFECT: higher efficiency.

7 cl, 11 dwg

FIELD: mining industry.

SUBSTANCE: device has working and reserve ventilators, placed in ventilator chamber. By means of connecting channels ventilators are connected to air-conducting and air-draining channels, which com together in triple-output branch pipes, connected via ventilation channels to general mine ventilation network. Ventilation chamber is separated from air-conducting channels by longitudinal vertical wall. Air-conducting channels are made in form of one mine, separated by longitudinal horizontal wall between triple branch-pipes. Means for reversing air flow are mounted in branch pipes. In connection channels on force or suck-in side of ventilators cutting means are mounted. Assembling drift is connected to end of ventilator chamber.

EFFECT: higher safety, lower costs.

3 dwg

FIELD: mining industry.

SUBSTANCE: device has working and reserve ventilators, each of which has diffuser with rotary branch pipe, electric engine, connected to ventilator by transmission shaft via toothed sleeves, and devices, covering input and output of ventilator. Additionally plant is provided with doubled input box, made in form of mated individual boxes of working and reserve ventilators by rotating these to face each other relatively to vertical planes, passing through axes of ventilators rotation. Side inner walls of ventilators form up a common rib, on which axis of special piece is placed, in turns covering branch pipes of input boxes of working and reserve ventilators. When using ventilator plant near residential or administration buildings its output box is provided by muffler and cowl, and output branch pipes of ventilators are provided with controlling blades.

EFFECT: lower costs, higher durability.

2 cl, 4 dwg

FIELD: mining industry.

SUBSTANCE: method includes feeding fresh air along air ducts due to generic depression, and output stream is taken partially through supported mines due to generic depression and partially - through extracted space of extracted or previously extracted column by means of gas-sucking plant. Methane support control in fresh and output streams is maintained. From the surface into air duct a ventilation shaft is drilled and additional fresh air is fed therein in same direction with main stream. Adjustment of methane containment in air streams at extraction portion is performed by changing amount of air, fed additionally.

EFFECT: increased volume of fed fresh air without substantial reconstruction of ventilation system.

1 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: device has air feeding channels, positioned between support and coal massif and ventilator with pipe for sucking air away. Additionally device is provided with curtain of transparent plastic profiles with load, positioned in lower portion of curtain, positioned on carrying ropes, connected to driving drum. The latter is held on ceiling of support section and provided with electric drive with automatic and manual control. Lower portion of curtain enters a space, formed by walling of cable packer and grating. Ventilator, moved with extraction of coal massif, is positioned in ascending air stream in ventilation drift. Width of curtain equals width of support section, and length is in 1.3 times greater than vertical height of support.

EFFECT: higher efficiency.

4 dwg

FIELD: mining industry.

SUBSTANCE: device has air-intake channels and ventilator with air sucking pipe. Each air-intake channel is made in form of flexible plastic pipe with gate, placed on lower side of ceiling of support section or in ceiling body in parallel to its longitudinal axis. One end of air-intake channel is positioned at same level with working end of ceiling, and second one is connected to air sucking pipe, held below support section ceiling behind combine in parallel to axis of scrapping conveyer. Ventilator is mounted on mating support on out-flowing air stream. Flexible plastic pipes are made having U-like shape with crosspiece perforated along length, positioned along working edge of support section ceiling. Also, air-intake channel is provided with subs, each of which is made of two intertwined parts, mounted on rotation axis, separated by air-impenetrable insert. Subs and ceiling are interconnected with possible rotation of subs relatively to ceiling, and axis of subs is displaced relatively to axis of joint of support section ceiling and is parallel to it.

EFFECT: higher personnel safety, higher efficiency.

4 dwg

FIELD: mining industry, particularly ventilation of mines or tunnels during bauxite deposit development.

SUBSTANCE: method involves supplying pure air from field haulage roadway through blind drift of transport horizon into ore rising one due to mine depression; feeding part of air from rising horizon in intermediate blind drift; directing remaining pure air in layered air supply drift and then to entry ways for venting thereof; removing contaminated air through previously developed entry ways in layered venting drifts arranged in exhausted space at deposit ground along the strike; directing contaminated air through venting rises arranged in exhausted space along block boundaries at deposit ground to field venting drift drilled under deposit ground along the strike at venting horizon level and blind drift of venting horizon to field venting drift; supplying pure air from intermediate blind drift to field rise and then to field venting drift through blind drift of venting horizon. Intermediate blind drift and field rise are adapted to evacuate miners in emergency conditions.

EFFECT: increased efficiency and miner's safety due to changing pure and contaminated air mass flow within the boundaries of the block.

3 dwg

FIELD: mining industry, particularly to form venting system, which controls thermal mine conditions during combined mining.

SUBSTANCE: method involves forming overburden haulage inclined out of the pit extending across the strike up to interface between exposed and underground mines; extracting mineral from the haulage; constructing venting means and mounting support in approach mine; erecting heat-exchanging mines during opened mining.

EFFECT: elimination of time intervals during venting system construction and mining performing, simplified people evacuation in emergency and possibility to use heat-exchanging mines for other purposes.

2 dwg

FIELD: mining, particularly to vent ore and rock mines.

SUBSTANCE: method involves mixing fresh and exhaust air by blasting fuel mixture; forming suction jet, which discharges exhaust air outside the mine. Fuel mixture components are supplied by compressed nitrogen. Air mixing is performed with the use of mixture including sodium permanganate and hydrogen peroxide taken in ratio of 1:(3-10). The suction jet is formed by exhaust air ejection. Venting plant is arranged at bottom mine level. Device comprises body with nozzle arranged over fuel mixture and control panel. The device additionally has nitrogen, sodium permanganate and hydrogen peroxide vessels. Venting pipeline is secured to body nozzle. The venting pipeline is provided with jets to supply hydrogen peroxide and sodium permanganate connected with compressed nitrogen cylinder through control panel. The venting pipeline is composed of separate sections put one on another and provided with conical flares. The flares and adjacent sections define annular air suction slots.

EFFECT: provision of independent operation, simplified structure, increased operational safety and reduced power inputs for mine venting.

1 cl, 1 tbl, 2 cl

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