Protective gate of underground mine working
SUBSTANCE: gate includes double-leaf bed installed in box and longitudinal and transverse bed movement mechanisms. Elastic seals are arranged in closed position of gate between box and front surface of bed, as well as on rear surface of bed. Simultaneous pressure of bed leaves to box is performed with external support fixed in the wall of underground mine working.
EFFECT: higher strength of double-leaf bed of gate and higher sealing reliability of underground mine working.
7 cl, 3 dwg
The invention relates to mining and underground construction and can be used in the manufacture and installation of devices for blocking underground workings, such as the station of the subway tunnel in order to protect people and equipment against the damaging effects of air shock waves and prevent penetration into the protected space of pollutants and aggressive environment.
Devices of this kind is subject to strict requirements in terms of size and placement in extremely limited storage space underground workings, as well as in terms of reliability of protective elements.
Known protective shutter underground structures, containing a box with hinges attached to the hinges of the box can be rotated in a horizontal plane hard cloth placed between the sheet and the outer surface of the box the seal of elastic material, the mechanism of rotation of the blade and locking mechanism with a complex hand drive. In this arrangement, the fabric interacts with the box through a single seal only on the front (working) surface of the box (see, for example, Building a catalog SC-11, No. 1, ed. JSC "Center of design products in construction", Moscow, 2008, s).
The main disadvantage of such a gate is narrow the scope and insecurity of its application because of the impossibility of complete removal of the bulky design of the rotary blade of the employed people extremely limited space underground tunnels.
Closest to the proposed invention to the technical essence and the achieved result from the point of view of liberation scarce working space in an underground working is a known shutter underground tunnels with side cameras, made in the form of a shaft door and contains fixedly mounted on the perimeter of the opening of the underground workings box with work surfaces, double canvas, mounted by means of guide rails in an underground working, with the possibility of placing each of the valves in the respective side chamber, and mechanism for lateral movement of the sash of the canvas relative to the longitudinal axis of the underground workings (see, for example, USSR author's certificate No. 127223, CL 5d, 201, published. in BI No. 7 for 1960).
The main disadvantage of the second of the above known technical solution is low functional reliability is made on the basis of the shutter from the point of view of protection against external influence on underground structure such factors as, for example, a powerful shock wave from the explosion or natural disaster, followed by admission into the workings harmful to the health of people and equipment aggressive water or chemically contaminated environment. This disadvantage is due to lack of design shutter tech the ski means to isolate the protected area with sealing gaps and locking the blade in the ground floor of the underground workings, and there are paintings of two unconnected halves perceiving shock separately.
Object of the present invention is to provide a protective shutter underground workings devoid of the above disadvantages of the known closures and providing new technical result, namely guarantee reliable isolation of the protected zone underground development by means of the bolt with double-leaf sliding leaf from the simultaneous impact of a shock wave and an aggressive environment, dangerous to life and health of people and equipment. This result is achieved by the reliable sealing of all gaps between the leaf and the frame and at the joint area between the wings of the protective cloth shutter with simultaneous strengthening two-leaf paintings and automatic pressing it to the box with locking relative to the underground tunnels.
The problem is solved in that the protective shutter underground tunnels with side cameras, including fixed on the perimeter of the opening of the underground workings box with work surfaces, double canvas, mounted by means of guide rails in an underground working, with the possibility of placing each of the valves in the respective side chamber, and mechanism of transverse p the motion of the valves double cloth relative to the longitudinal axis of the underground workings, there is a mechanism for pressing the valves double cloth to the box and elastic seals, one of which is made annular and is installed between the working surface of the box and the front surface of the double cloth in close position of the valves, and the other elastic seal is made in the form of a strip mounted vertically behind the rear surface of the double cloth with the possibility of overlap between its leaves, and the pressing mechanism of the valves double cloth to the box with one end connected with leaves, and the other end is mounted for cooperation with a stop fixed in a recess made in the wall of the underground tunnels across the working surface of the box. In one embodiment of the shutter of the present invention the annular elastic seal is made solid and secured to the working surface of the box. In another embodiment, the annular elastic seal can be made of two half-rings, each of which is fixed on the front surface of the corresponding leaf double-leaf paintings. A resilient seal in the form of a strip may have a rectangular or T-shaped cross-section and be secured to the rear surface of one of the doors by means of a rigid vertical plate. In site Cetelem embodiment of the invention, the pressing mechanism of the valves double cloth to the box contains the Electromechanical drive of the motor, fixedly mounted on a rigid vertical rod, worm gearbox, two Central rods connected at one end with a worm gear, two pairs of lateral rods, pivotally connected at one end through a pair of corresponding Central thrust, and a spring-loaded rod that is installed against the stop plate and pivotally connected with the free end thrust of the respective pairs of rods.
The essence of the invention and its advantages over the known technical solutions will become more clear and apparent from the following detailed description of example with reference to the accompanying drawings, which schematically:
Figure 1 - General view in vertical longitudinal section of the protective shutter, made according to the present invention.
Figure 2 is a view along arrow a in figure 1 (from the area of external influence on underground construction).
Figure 3 is a view in cross section b-B of figure 1, illustrating the elements of sealing gaps in the protective shutter of the present invention.
In the described example of the invention, the protective shutter is installed in an underground working in the tunnel with concrete lining 1. In the ground floor of the tunnel 1 on the perimeter of its opening is mounted box 2 with the working surface 3, are made of elements of the mortgage Pulkovo what about the steel profile. The back of the box 3, i.e. in the protected zone of the tunnel 1, performed cross-development 4 (3) on the left 5 and right 6 the side chambers (figure 2). The top and bottom of the tunnel generation made niche 7 and 8 with the rear support walls, respectively 9 and 10, vypolnennymi over the steel embedded in the lining of the tunnel 1 in front of the box 2.
In a cross-development 4 fixed the guide rails 11 and 12, which is installed with double canvas 13 mechanism 14 lateral movement of the valves 15 and 16 relative to the longitudinal axis of the tunnel 1. Left 15 and right 16 sash double cloth 13 is installed with the possibility of accommodation in the respective side chamber 5 or 6, and in front of the box 2 in their close position.
Between the box 2 and double leaf blade 13 in close position of the valves 15 and 16 posted by annular elastic seal 17, made of heat-resistant reinforced rubber. As shown in figure 1, the seal 17 is made in the form of solid rings, mounted on the working surface 3 of the box 2. In another embodiment, the elastic seal 17 may be made in the form of two half-rings attached on the front surface 18 of the respective valves 15 and 16 double cloth 13 (not shown).
The rear surface of the double blade 13 posted by another (Ni is sustained fashion elastic seal 19, made in the form of strips (figure 1 - rectangular cross-section), installed vertically overlapping the joint between the wings 15 and 16 in their close position. The seal 19 is secured in position on the left wing, 15 double-leaf paintings by rigid vertical strap 20. In another embodiment, the present invention further seal 19 has a T-shaped cross-section and partially placed between the wings 15 and 16 (figure 3 of the drawings).
According to the present invention, the protective shutter is equipped with mechanism for simultaneously pressing the valves 15 and 16 double cloth 13 to the working surface 3 of the box 2. In the described example, this mechanism includes an Electromechanical actuator of the kinematically connected to the motor 21, a worm gear 22, the two Central rods 23, two pairs of side rods 24 with an earring 25, spring-loaded relative to the blade 13 of the rod 26 and the stops 27, fastened to the supporting walls 9 and 10 in the recesses 7 and 8 of the tunnel 1. At one end of the mechanism simultaneously pressing the valves 15 and 16 to the box 2, namely, the motor 21 is fixedly mounted on a rigid vertical rod 20 and at the other end of the spring relative to the double cloth 13, the rod 26 is set in the off position with a gap relative to the lugs 27.
Work is izgotovlenie of the present invention and mounted in an underground working of the protective shutter is as follows.
In the absence of the threat of external influences on the subject of protection of the underground construction of the shutter is always open when placing the valves 15 and 16 double-leaf paintings in the respective side chambers 5 and 6 of the tunnel 1.
In the situation, causing the need to use the protection of people and equipment in an underground working (for example, before carrying out blasting operations in the vicinity of the underground workings or the threat of natural disaster in the form of a landslide, floods and similar events), the protective shutter is closed by extension of the chambers 5 and 6 of the valves 15 and 16 along the rails 11 and 12 through the mechanism 14. When closing the valves 15 and 16 overlaps the joint between them using the seal 20.
After that include an electric motor 21 and carry out uniform (i.e. compensation to manufacturing errors and Assembly of structural elements of the shutter, as well as irregularities underground workings) pressing of the double cloths 1 whole box 2 protective shutter with elastic seals 17, 19 and external support in the form of the stop 27. However due to the design of the shutter particularly attached to two elastic seals 17 and 19 and the outer stop 27 is a reliable sealing of all gaps between the area of external action and the protected area of the underground workings. Simultaneouslytherefore phenomenon due to the tightening of the double fabric between the elastic seals 17 and 19, an automatic locking in the working position of the valves 15 and 16 against inadvertent disclosure a protective shutter. In addition, due to the presence of these features, the protective shutter of the present invention acquires a new property, namely, that double cloth pressed in to the box position works in shock as a whole (i.e. single) with an additional Central support, interacting with an external focus, not cluttering space underground tunnels.
To restore normal operation of the underground workings shutter open by performing the above procedure in reverse order.
From the above description it follows that in the case of essential features listed in the formula of the present invention are guaranteed access to high-tech and reliable protective shutter with the new technical property is particularly important for underground structures.
1. Protective shutter underground tunnels with side cameras, including fixed on the perimeter of the opening of the underground workings box with work surfaces, double canvas, mounted by means of guide rails in an underground working, with the possibility of placing each of the valves in the respective side chamber, and mechanism for lateral movement of the sash double cloth relative to the longitudinal axis on the earth develop, characterized in that it is equipped with a mechanism for pressing the valves double cloth to the box and elastic seals, one of which is made annular and is installed between the working surface of the box and the front surface of the double cloth in close position of the valves, and the other elastic seal is made in the form of a strip mounted vertically behind the rear surface of the double cloth with the possibility of overlap between its leaves, and the pressing mechanism of the valves double cloth to the box with one end connected with leaves, and the other end is mounted for cooperation with a stop fixed in a recess made in the wall of the underground excavations in front of the working surface of the box.
2. Protective shutter according to claim 1, characterized in that the annular elastic seal is made solid and secured to the working surface of the box.
3. Protective shutter according to claim 1, characterized in that the annular elastic seal is made of two half-rings, each of which is fixed on the front surface of the corresponding leaf double leaf blade.
4. Protective shutter according to claim 1, characterized in that the elastic seal strip has a rectangular cross-section.
5. Protective shutter according to claim 1, characterized in that e is actionee seal strip has a T-shaped cross-section and partially housed between the inner ends of the valves double leaf blade.
6. Protective shutter according to claim 4 or 5, characterized in that the elastic seal strip fixedly mounted on the back surface of one of the doors double-leaf paintings by rigid vertical bars.
7. Protective shutter according to claim 6, characterized in that the pressing mechanism of the valves double cloth to the box contains the Electromechanical drive of the electric motor fixedly mounted on a rigid vertical rod, worm gearbox, two Central rods connected at one end with a worm gear, two pairs of lateral rods, pivotally connected at one end through a pair of corresponding Central thrust, and a spring-loaded rod that is installed against the stop plate and pivotally connected with the free end thrust of the respective pairs of rods.
FIELD: process engineering.
SUBSTANCE: proposed method comprises air flows displacement by moving electric train and feed fresh air to passenger platform by varying air density on said platform. Note here that train is provided with fluid air to be released in air space of metro station equipped with vent shaft. Air with higher density displaces warm dirt air into station vent shaft to replace it by fresh cold air.
EFFECT: fresh air feed in whatever season.
SUBSTANCE: installation includes fan, delivery line, inducing and water-spraying device installed on its end. Inducing and water-spraying device includes outlet head with annular outlet slot, receiver and compressed air supply nozzle. In order to increase energy use efficiency of compressed air owing to active mixing of inducing and induced jets, separation effect of inducing jet from convex surface is used in inducing and water-spraying device. Common air jet is passed through two-layer fine-meshed screen before it is emitted to atmosphere of mine working. In order to protect outlet slot against deformations, at HWL (high-water level) impact, inducing and water-spraying device is equipped with deformation-proof flange. Water supply nozzles to inner cavity of the main diffuser are installed on convex surface of the main diffuser at angles of 120 degrees to each other.
EFFECT: higher use efficiency of compressed air energy.
4 cl, 2 dwg
SUBSTANCE: protective lock comprises a box with hinges, a rigid web mounted in box hinges with the possibility of rotation in the horizontal plane, a seal of elastic material arranged between the web and the face surface of the box, a mechanism of web rotation and a locking mechanism. The lock is also equipped with an additional seal made as a hollow ring with a source of compressed air. On an inner surface of the box there is a support platform. The additional seal is installed between the box and the web.
EFFECT: increased reliability of underground facility protection with simplification of lock design, provision of economic efficiency in process of manufacturing and operation of the lock.
2 cl, 5 dwg
SUBSTANCE: according to the method, the body is installed in the input cross-section of a mine, its mass is measured, a fixed air medium is installed in the mine, the mine length is measured, as well as angle of its inclination, the body is imparted with a possibility of movement in the air medium. The specified mass flow of body movement is measured, as well as the air medium movement speed that corresponds to it, their possible limit deviations from the specified values are identified. In case there are deviations, the body length is measured, as well as its midlength section, volume and shape. Their respective values are identified in the output cross-section of the mine. The mass flow of the body and the speed of the air medium movement are varied. Mass flow rates of the body and the air medium are measured in the output cross-section of the mine, as well as the specific densities of the volume flow rate of the air medium, corresponding to the mass flow rates of the body, parametres of their variation modes are determined, as well as the specific density of the air medium, and the initial aerodynamic force of the body is specified. The aerodynamic force of the body in the air medium with the variable mass speed of the body is determined in the output cross-section of the mine, at the specific density of the volume flow of the air medium and various parametres of their variation modes using given mathematical formulas.
EFFECT: increased accuracy of aerodynamic force detection and improved validity of air flow supplied into the mine.
SUBSTANCE: device comprises confusor, intermediate flange and nozzle, including inner circular chamber and nipple for supply of compressed air into chamber. Screen filter fixed against falling out with a stop ring is installed in nipple for compressed air supply. End part of inner surface of nozzle that adjoins flange has spherical surface. In area of nozzle connection to flange with the help of bolts a circular slot is formed due to gasket. To supply water into inner cavity of device, confusor is equipped with nozzle in outlet part. Device is equipped with handles for transportation.
EFFECT: improved efficiency of airing due to increased distance up to 20 m and more from end of airing pipeline to blind bottomhole of developing entries, dust suppression of high quality and gas dilution directly in focus of their formation.
SUBSTANCE: proposed installation comprises blower with nozzle arranged in underground recirculation channel, bulkhead and shell with self-sealing valve. Aforesaid shell is arranged in crosswise wedge-like bulkhead along underground recirculation channel that communicates air feed and vent channels. Gaps between shell and aforesaid bulkhead are sealed. Aforesaid blower is arranged on one side of the shell, while on other side a self-sealing valve is fitted. In partial air reuse, said valve is open, while in changing into airing conditions with recirculation, said valves shuts off the shell. Support bulkhead is mounted at intersection of air recirculation and ventilation channels. Ventilation or recirculation channel accommodates sensors that serve to control quantitative and qualitative parametres of recirculated air and installation overall control unit.
EFFECT: higher safety, reliability and efficiency.
7 cl, 2 dwg
FIELD: process engineering.
SUBSTANCE: proposed method comprises controlled air inflow. Note here that said controlled air inflow occurs between first and second stages of the fan.
EFFECT: lower power consumption.
FIELD: machine building.
SUBSTANCE: device is equipped with autonomous sub-system of control over separate ventilating installation. The sub-system consists of a mode setting block, of an electric engine smooth start-up block, of a control block, outputs of which are connected to inputs of actuators of working wheel blades turn and turn of the gate of the ventilator, of sensors of working wheel blades position and gate position and of a metre of current voltage or electric engine exciting current. The device is additionally equipped with autonomous sub-systems of control over separate ventilator installations. Each sub-system contains an actuator for control over brake, the input of which is coupled with the output of the control block, pressure and brake gauges and a micro-processor controller including a "driving-driven" mode switch block, an input-output module and a micro-processor module. The outputs of the sensors of working wheel blades position, gate position, feed voltage or electric engine exciting current, gauges of pressure and brake are connected with corresponding inputs of the input-output module. The block for electric engine smooth start-up of each autonomous sub-system is made in form of a combined block of a smooth start-up-adjustment of excitation (SSB/EAB). The latter is used as a block of smooth start-up with phase control at application of an a-synchronous electric engine and as a block for adjustment of excitation current at application of synchronous electric engine of the ventilator. The microprocessor controller is coupled with the electric engine of the ventilator via the module of input-output and SSB/EAB.
EFFECT: increased reliability of control over installations containing several ventilator aggregates with a-synchronous or synchronous electric engines.
2 cl, 1 dwg
SUBSTANCE: method includes air supply from main mines along panel transport mines to block transport mines to areas of mining works and removal of spent air from bottom hole through split chambers in block ventilation mines to panel ventilation mines further to main ventilation mines, at the same time part of spent air from panel ventilation mines through blocks, where treatment works are not carried out, recirculates to block ventilation and split mines, and also through block transport mines, to panel transport mines with the help of additional recirculating ventilation plants located on panel and block mines, where mining works are not carried out.
EFFECT: lower risk of contaminated air accumulation in mined-out space, provision of stable microclimate in areas of mining works and reduced costs for ventilation.
SUBSTANCE: long blind drift ventilation method involves drilling of the main and additional wells in a pillar between adjacent and blind drifts; development of the cavity connecting the main and additional wells; air supply via the main well from fan or other draft source from adjacent drift to blind one; air ejection via additional wells from adjacent drift to blind drift. For more qualitative mixture of active (inducing) and passive (induced) jets the created cavity has bigger length and is made in the form of cone - diffuser.
EFFECT: increasing the jet head, flow continuity and its hydrodynamic stability, increasing system ejection coefficient.
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.
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.
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.
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.
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.
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.
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