Method for extraction of massive coal bed

FIELD: mining industry.

SUBSTANCE: method includes driving of layer transporting and ventilation mines along soil and ceiling of bed, in massive and in extracted space, cutting of cleaning mines in cross-section of bed at angle of 27, mechanized delivery of coal along bed mines to coal furnaces and vertical dropping of coal to furnaces. Extraction of slanted transverse bed is performed along bed diagonals having direction to horizon at angle of 27, to provide for free sliding of coal without degradation. Delivery of coal from cleaning mine placed at angle of 60 to layer mine, to back field mine is performed by self-delivery from any place of extraction field along layer mine, field coal-lowering mine and field slanting coal furnace, being at angle of 27 to horizon. Field slanted coal furnaces are placed at distance from one another along 20 m normal. Field coal mines in form of fans of three mines are connected on field slanted coal furnaces at distance of fan start from one another of 60 m with output of mines ends to each layer mine of group of three above-lying slanted-transverse layers for whole diagonal length of extraction field at distance between mines outputs along layer soil of 60 m. Ceiling of cleaning mines may be supported without load, utilizing mechanical traction on the side of ventilation furnaces for pressing moveable support tool to layer ceiling.

EFFECT: higher efficiency.

2 cl, 3 dwg

 

The invention relates to the mining industry, namely to underground coal mining and the environment.

There is a method of extraction of thick layers of coal, in which the reservoir is divided into horizontal layers. Excavation of the layers is carried out in descending order [1]. The clean-out section in the cross section of the reservoir have horizontally between the roof and the ground and move it along. The broken coal is transported by conveyors to a water treatment section, floor or bed drifts. The disadvantage of the prior art is the large length of the delivery of coal by mechanical means (conveyor) in the treatment benches, floor or grate roadway that is associated with high economic costs.

The closest technical solution of the method of extraction of thick layers of coal is the way in which the reservoir is divided into oblique-transverse layers [2]. In this case, the treatment section is located in the cross section of the seam between the roof and the ground at an angle to the horizon 27°providing samotechny delivery of coal for the section without crushing coal. Each inclined transverse layer is removed along the strike of the layer, and all layers are extracted in ascending order with total mined-out space. Shipping coal and backfill material are manufactured by a number of openings arranged in an array and generated about is transto. The coal layer after clearing vertically reset by prespectrum furnaces. The disadvantages of the prototype of the invention are the high cost of maintaining roadways because of the high bearing pressure, undesirable crushing of coal dropping it vertically on opesuse furnace and a large dust.

The basis of the invention tasked with developing a more efficient method of extraction of thick layers of coal, enhance and protect the environment by reducing the displacement of the overlying rocks and dust.

The invention consists in that in the method of extraction of thick layers of coal, including the driving of the transport layer and ventilation and backfill excavations in the soil and the top of reservoir, in the array and in the developed space, cutting the water treatment faces in cross section of the reservoir at an angle of 27°, mechanized delivery of the coal layer glades and drifts to uhlenbusch furnaces and vertical reset it in the oven, the notch oblique-transverse layer are along the diagonals of the reservoir, with the direction to the horizon at an angle of 27°providing free sliding of coal without grinding, while delivery of coal from the treatment Zachodni available to the clearing layer at an angle of 60°to haulage field drift lead by gravity from any place of the extraction field on layering about what ECU, field uglespusknoj Gazenko and field inclined opesuse furnace having an angle of inclination to the horizon 27°and field sloping opesuse furnace are placed apart at a distance along the normal 20 m, and field opesuse hesinki in the form of fans three jasenka bring to the field inclined uhlenbusch furnaces on the distance of the beginning of the fans from each other 60 m with the output ends of Gusenkov to each layer clearing groups of three overlying the inclined transverse layers on the entire diagonal length of the extraction field on the distance between the outputs of esenkov the soil layer 60 meters

The invention consists also in the fact that the roof of treatment benches support bitratrate using mechanical traction side vent-filling furnace for tightly pressed roll supporting body towards the top layer.

Vazrazhdane maintain the roof in a mining face can improve the stability of the bottom space in cleaning benches, and also to reduce the movement of the overlying rocks and the earth's surface.

The location of the treatment Zachodni at an angle of 60° to grate clearing eliminates delays gravity delivery of coal between the two workings.

Shipping coal by clearing the benches, layer glades, field prespectrum hasenkam and field inclined angle of the exhaust furnaces at an angle of 27° provides slip, slide coal in all workings of the extraction field and avoids them undesirable crushing of coal and the formation of large amounts of dust.

The location field inclined uhlenbusch furnace at an angle of 27° and at a distance from each other 20 m allows field Gusenkov collected in the fan field inclined uhlenbusch furnaces at distances from each other 60 m, with the outputs of the ends of Gusenkov to layer glades three overlying layers on the entire diagonal length of each layer at distances of outputs from each other 60 m, to ensure the delivery of coal from any place of the extraction field and reduce the length of the layer clearing on the border with mined-out space.

In General Vazrazhdane maintaining the roof in cleaning benches and gravity delivery of coal to the haulage drift on all the workings of the extraction field: clearing the benches, layer glades, field hasenkam and field sloped prespectrum furnaces provide an efficient separation of coal, delivery, security, the development of thick layers and save the environment.

Further, the proposal is illustrated by drawings.

Figure 1 shows a section of the extraction field in the fall, cross section a-a from figure 2; figure 2 is a view of the excavation field from the soil layer on the arrow In figure 1; figure 3 is a view of the treatment site in the section-Which-E figure 1.

In the drawings, excavation field contains the clean-out section 1, layer 2, and the ventilation-stowing 3-cuttings fan 4 field uhlenbusch of Gusenkov, including Gesink 5 on the working layer 6 overlying prepared layer 7 on the top third successive layer, field sloping opesuse furnace 8, field haulage drift 9, vent-filling furnace 10, filling the pipeline 11, laid the mined-out area 12. Of the drawings also shows that the support 13 of the treatment Zachodni 1 contains berezgunatsky the roof bar 14 to the roof of the treatment zagadki, its mechanical rod 15 and the device 16 of the fastening rod in clearing layer 2.

The method is as follows.

Department of coal lead to a water treatment section 1 korotkosheimi complex, the roof bar 14 which bitratrate pressed against the roof of the mechanical-draft 15. One end of the thrust is fixed device 16 in clearing layer 2. The tension and pressure of the roof bar to the roof layer is from the surface of the earth through the vent-filling furnace 10 and the vent-filling opening 3. Goaf 12 fully laid, and backfill material serves on the pipeline 11 from the surface of the earth through the vent-filling furnace 10 and the vent-filling interlayer 3. Coal is delivered only by gravity through a water treatment section 1, loubomo lane 2, field Gazenko 5 and field prespectrum furnaces 8. With uhlenbusch furnaces coal hits the transportation field drift 9.

Field sloping opesuse furnace have from each other along the normal at a distance of 20 m, which allows you to completely cover the fans field Gusenkov group of three layers. Fan 4 field Gusenkov place so on a sloping field uhlenbusch furnaces, so that their outputs 5, 6, 7 on the group of the three layers were at a distance of 60 m from each other throughout the length of the field along the diagonals of the layers.

Sources of information

1. Technology of underground mining of mineral deposits. Textbook for high schools / Under obscured Assortative. 3rd ed., revised and enlarged extra - M., Nedra, 1983. - P.350.

2. Mashkovtsev IN the Technology of underground coal mining. The tutorial. - M., Izd-vo UDN, 1982. - S.

1. The method of extraction of thick layers of coal, including the driving of the transport layer and ventilation and backfill excavations in the soil and the top of reservoir, in the array and in the developed space, cutting the water treatment faces in cross section of the reservoir at an angle of 27°, mechanized delivery of the coal layer glades and drifts to uhlenbusch furnaces and vertical reset coal in the furnace, characterized in that the recess inclined transverse layer are along the diagonals of the reservoir, with the direction to the horizon at an angle of 27°ensuring freedoms of the first sliding coal without grinding, the delivery of coal from the treatment Zachodni available to the clearing layer at an angle of 60°to haulage field drift lead by gravity from any place of the extraction field on layering clearing, field uglespusknoj Gazenko and field inclined opesuse furnace having an angle of inclination to the horizon 27°and field sloping opesuse furnace are placed apart at a distance along the normal 20 m, and field opesuse hesinki in the form of fans three jasenka bring to the field inclined uhlenbusch furnaces on the distance of the beginning of the fans from each other 60 m with the output ends of Gusenkov each layer clearing groups of three overlying the inclined transverse layers on the entire diagonal length of the extraction field on the distance between the outputs of esenkov the soil layer 60 meters

2. The method of extraction of thick layers of coal according to claim 1 characterized in that the roof treatment of the benches support bitratrate using mechanical traction side vent-filling furnace for tightly pressed roll supporting body towards the top layer.



 

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FIELD: mining industry.

SUBSTANCE: method includes driving of layer transporting and ventilation mines along soil and ceiling of bed, in massive and in extracted space, cutting of cleaning mines in cross-section of bed at angle of 27, mechanized delivery of coal along bed mines to coal furnaces and vertical dropping of coal to furnaces. Extraction of slanted transverse bed is performed along bed diagonals having direction to horizon at angle of 27, to provide for free sliding of coal without degradation. Delivery of coal from cleaning mine placed at angle of 60 to layer mine, to back field mine is performed by self-delivery from any place of extraction field along layer mine, field coal-lowering mine and field slanting coal furnace, being at angle of 27 to horizon. Field slanted coal furnaces are placed at distance from one another along 20 m normal. Field coal mines in form of fans of three mines are connected on field slanted coal furnaces at distance of fan start from one another of 60 m with output of mines ends to each layer mine of group of three above-lying slanted-transverse layers for whole diagonal length of extraction field at distance between mines outputs along layer soil of 60 m. Ceiling of cleaning mines may be supported without load, utilizing mechanical traction on the side of ventilation furnaces for pressing moveable support tool to layer ceiling.

EFFECT: higher efficiency.

2 cl, 3 dwg

FIELD: mining industry.

SUBSTANCE: method for extraction and underground use of coal includes cleaning extraction and dumping of coal, fixing and controlling ceiling and transporting coal along face to drift. On the drift, in moveable generator, coal is pulverized for intensive burning with use of jets in water boiler firebox, where high temperature of steam is achieved (about 1400 C), enough for decomposition of water on oxygen and hydrogen. These are separated, then oxygen is fed back to jets, and hydrogen is outputted along pipes and hoses in drifts and shaft. Variants of underground generator for realization of this method are provided. Also provided is method for extraction of disturbed coal beds by short faces. It includes extraction and dumping of coal on face conveyor, fixing of ceiling behind combine, moving conveyor line and support sections in direction of cleaning face displacement, control of ceiling with destruction and partial filling. Extraction of coal is performed in short curvilinear faces by long stripes along bed, in straight drive without forwarding drifts, with preservation and reuse of ventilation and conveyor drifts, equipped with mounting manipulator robots, with fixing behind combine by automatically operating support deflectors without unloading and displacing sections in area of coal extraction. Extraction and transporting of coal is performed by fast one-drum combine and curvilinear reloading conveyor, supplying coal to drift conveyor or immediately to underground gas or energy generator placed immediately on drift. Also proposed is face scraper conveyor for realization of said method, wherein pans are made with step along front face profile, greater, than along back one, while forming common line curved towards face with constant curvature. Also proposed is a method for controlling complex for unmanned coal extraction.

EFFECT: higher efficiency, effectiveness, broader functional capabilities.

8 cl, 5 dwg

FIELD: mining industry.

SUBSTANCE: method includes determining gas potential of extracted bed in limits of extraction area and monitoring of relative gas-escape from extracted bed and of extracted coal with withdrawal of lava from mounting chamber. Value of primary step of main ceiling destruction is set on basis of distance from mounting chamber to point of minimal gas-kinetic coefficient values closest to it, as which coefficient relation of relative gas-escape to bed gas potential bed is taken. Value of destruction step is determined from mathematical relation, considering distance from mounting chamber to closest point of said coefficient minimal values. It is possible to construct a graph of dependence of gas-kinetic coefficient from distance between face and mounting chamber. Portions of extraction field, wherein periodical changes of gas-kinetic coefficient are observed, are related to areas of geological irregularities influence. On basis of decrease of amplitude of maximal oscillations of gas-kinetic coefficient displacement of face to exit of geological irregularities area is detected, and on basis of increase - entrance therein.

EFFECT: higher precision, higher speed of operation.

2 cl, 3 dwg

FIELD: mining industry.

SUBSTANCE: method includes erection of rows of main platforms along bed length in staggered order with length equal or divisible by step value for support displacement, and placing filling material thereon. Along length of main platforms between ceiling and bed soil post support is mounted, upon which filling material is fed. After that between main platforms additional platforms are erected with wedge supporting, and main platforms are rotated counter-clockwise towards pneumatic support and it is displaced for one drive step. During that filling material, while lowering, unwedges wedge support between ceiling and bed soil and forms artificial supports. After that additional platforms are rotated counter-clockwise towards pneumatic support. After movement of cleaning face for two drive steps operations for constructing artificial supports are repeated. Distance between main platforms along bed fall line are selected from mathematical expression.

EFFECT: higher efficiency.

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes preparation of slanting extraction fields at whole area, driving transport drifts, driving ventilation drift for upper extraction field and use of transport drifts of extracted fields as ventilation drifts during extraction of lower extraction fields, and preparation of chamber for coal through block lower than transport drift. Transport drift and chamber are driven with straight preparation and extraction order for extraction fields, using solid system of fields extraction. Chamber is connected to transport drift by links and is driven in advance relatively to it with slant to provide for free draining of water from transport drift and chamber. Chamber width is set on basis of condition for displacement of working toll of technological extraction complex in it.

EFFECT: higher intensiveness, higher reliability.

3 dwg

FIELD: mining industry.

SUBSTANCE: method includes preparation of slanted extraction fields, driving transport drifts, driving ventilation drifts for upper extraction field and use of transport drift of upper extraction field as ventilation during preparation of lower extraction field, driving two chambers through block in parallel to transport drift. Lower chamber is driven with advance relatively to transport drift and to upper chamber and with slant, providing for free flow of water from transport drift and both chambers. Transport drift is periodically filled with breakthroughs to upper chamber, which is by breakthroughs connected to lower chamber. Width of lower chamber is set in accordance to condition of placement of working tool of technological extraction complex therein, and width of upper chamber - from condition of placement of rock therein which is product from driving of transport drift. Transport drift and both chambers are driven with straight preparation and extraction order of extraction fields, using solid system of extraction fields extraction.

EFFECT: higher intensiveness of operation.

3 dwg

FIELD: mining industry.

SUBSTANCE: method includes driving mines, drilling saturation wells along mineral resource, pressurization thereof by pressurizing means, feeding of softening reagent under pressure and saturation of mineral resource massif. Additionally saturation wells are drilled at bed ceiling, pressurized and softening reagent is pumped therein with 1-2 day exposure after forcing of reagent into mineral resource massif. Well along ceiling are placed at an angle so that distance from pressurizing means location to line of contact of ceiling to mineral resource was not less than saturation radius, and distance between wells was not less than 2-3 saturation radiuses. Between saturation wells along bed ceiling additionally drilled are wells for explosive substance charges with slant for 15-20 degrees greater, than slant of saturation wells, while the distance between saturation wells in this case is increased to 3-4 saturation radiuses. For prior processing of mineral resource by softening reagent a mine is driven in front of cleaning operations front, from which on both sides along mineral resource bed wells are drilled for feeding softening reagent therein, and after end of processing and removal of pressurizing means mine is equipped with degassing pipes.

EFFECT: higher efficiency and higher safety.

3 cl, 2 dwg

FIELD: mining industry.

SUBSTANCE: method includes drilling a system of hydraulically connected wells, directed and horizontal, cased and not cased along coal bed. Hydrodynamic and fire effect on coal bed is performed through these. Gassing and degassing processes for coal bed are performed serially via a system of hydraulically connected wells. In that case degassing process is performed by thermal treatment of channels of coal by counter-flow displacement of burning source after combustion of coal bed in one of wells. Then neutral gas is forced into system of hydraulically connected wells, ignited zone is quenched and coal methane is extracted from several wells, equipped for degassing. Gassing process is performed via repeated combustion through specially drilled vertical well and forcing flow into directed cased wells. Formed combustible gas is drained through directed non-cased wells in direction by normal lines from horizontal transverse well.

EFFECT: higher efficiency.

1 dwg

FIELD: mining industry.

SUBSTANCE: method includes separating bed on levels by driving level drifts, driving sublevel drifts, separating levels on sublevels, extraction of mineral resource in sublevels by hydraulic monitors, transporting caved-in enveloping rocks to extracted space of lower sublevels. Extraction of bed is performed without leaving of any coal blocks between extracted spaces of adjacent levels. During extraction of lower sublevel, adjacent to upper boundary of even lower level, extracted space is filled within limits of current sublevel with empty rocks, while slanting height of backfill massif is taken to be greater than 0.6 horizontal bed massiveness. Slanting height of lower sublevel is taken to be greater than slanting height of backfill massif.

EFFECT: higher personnel safety, higher efficiency, lower costs.

1 dwg

FIELD: mining industry.

SUBSTANCE: method includes driving mines in front of cleaning face, processing ceiling and mineral resource by softening agents and extraction of it by cleaning combines with additional removal of mineral resource from below the ceiling. In massif below the ceiling shafts and mines are driven at maximal distance on basis of capabilities of used drilling equipment, not allowing during drilling fro processing massif below ceiling deviation from it until contact with surface by face-adjacent ceiling, supported by cleaning combine support, and distance between following driven mines is doubled, which mines are necessary for displacement of drilling equipment and equipment for feeding softening agent into wells. After finishing its pumping these wells and mines are used through connections in shafts with removing pipeline for extracting methane and degassing mineral resources. Stack of mineral resource unprocessed by softening agent has value of no more than one-two steps of extraction of coal bands along whole length of cleaning face, and the very removal of mineral resources from massif is performed in portions along whole length of mineral resource no more than 2-3 thicknesses f cutting bands of mineral resource. Device for cutting massif includes sections of mechanized support, containing base, connected to spreader posts, extending executive tool. Combine support on the side of cave-in between back posts has wedge-shaped cutting posts, hydraulically connected to back posts. Cutting posts are provided with individual means for controlling feed and draining of hydraulic liquid. Cutting posts have devices, forming in case of their spreading vibration of hydraulic liquid sent to them.

EFFECT: higher efficiency, higher personnel safety.

2 cl, 3 dwg

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