How to develop powerful steep coal seam stripes on the uprising

 

(57) Abstract:

How to develop powerful steep coal seams includes the division of the floor on padati, dredging coal in potatah stripes on the uprising with the use of blasting and magazynowania of extracted coal. Blasting of coal in the band (substage) is split from the furnace, starting at the bottom of the strip with notches compensation cracks in the soil layer; airing stope is through wells, vyburivanija at the boundaries of the strips, while the borehole, which are split furnace for working bands, connect Bonami to the well, which are (wyborowa) for the next adjacent strip. The method allows to increase the efficiency of drilling and blasting operations, security, and ease of mining. 3 Il.

The invention relates to the mining industry, and specifically to the technology of mining steep thick coal seams underground.

Famous chamber system development steep coal seams, including rising workings, located on the flanks of each camera, drilling cables in ceilings camera with a broken tamakaimoana coal, the production of coal and landing camera (filling obrus and perform blasting work, in the camera under the overhanging coal array. This system was widely used when developing a powerful abrupt layers in Kuzbass in the upper horizons.

Currently, all kinds of chamber systems development with finding people in a mining face is prohibited.

The closest technical solution in essence and the achieved result (in terms of coal extraction) is a method of designing cool coal seam, including the preparation of the extraction field band at rebellion by conducting uprising workings and sboc of them in the prepared strips, drilling and loading of blast holes in the step of simultaneous blasting of coal, the production of coal to be mined strip in uprising within its borders with magazynowania coal in mined-out space and its subsequent release [2].

The disadvantage of the prototype is that the blasting operations from rising workings of small cross section mates with a big inconvenience drilling of boreholes and wells and unsatisfactory breaking coal in the initial stage in the band, when cutting due to the lack of required amount of the compensation space.

The aim of the invention is the elimination of otmachine division floor to padati, dredging coal and sublevel bands on the uprising with the use of blasting and magazynowania broken coal, the breaking of coal in the band (substage) are split from the furnace, starting at the bottom of the strip with notches compensation cracks in soil formation and ventilation of the stope lead through wells, vyburivanija on the borders of the strip, at the well, which are split furnace for working bands, connect obayomi to the well, which are (wyborowa) for the next adjacent strip.

Conducted patent research has shown that neither the patent nor in scientific and technical literature is not a known technology for thick coal seams steep drop, characterized by the same set of essential features, which shows how the development of coal seams according to the invention, i.e. the claimed object meets the patentability criteria of "novelty."

Comparative analysis of the proposed technology testing powerful steep coal seams with known analogues shows that the proposed method of development has significant advantages, providing a good crushing of extracted coal and normal airing chistogolosyh, which is not expressly derived from the prior art, i.e., claimed as the invention of the technology meets the requirements of patentability "inventive step".

In Fig. 1 shows the General scheme of coal extraction within the substage excavation of the site of Fig. 2 - section a-a in Fig. 1; Fig. 3 - section b-b of Fig. 2.

According to the invention, the powerful steep seam within the mining field (plot) is prepared in the usual way, the roller (main) and ventilation drifts, passed, usually through the formation. The floor within the extraction field is divided into 2-3 substage height of 20-30 meters Each substage, starting from the top, worked by bands 1 to revolt width of 8-12 m, leaving the coal pillar 2 between adjacent strips of a width of 2 m In each band on her flanks of the soil reservoir hosts (webwrights) two wells 3 and 4 with a diameter of 850 mm; bore 4 of each previous strip 8-10 m on dip incorporate Bonami 5 wells 3 subsequent strip 1. The distance between the wells 4 and 3, were drilled in the adjacent bands, accepted 3 m, and in one lane - width strip along the strike, i.e. 8-12 m Well 4 in each band extends borovany is, ukreplena wooden rack support 7.

In each substage are vent 8 and the conveyor 9 drifts; 3-3,5 m above the conveyor drift 8 runs parallel to the roadway 10. Between drifts 9 and 10 are passed opesuse breakthrough 11.

The treatment works on the extraction of coal in each band 1 begin with the notches of the compensation of the slit 12 in the soil formation, the coal which bounces drilling and blasting method the entire width of the strip along the strike of the reservoir and about 2 m in layer thickness.

Height compensation of the slit 12 to the uprising of the reservoir is approximately 1/3 of the substage, i.e., within 10 m

After unloading the broken coal from the expansion slots and its airing of the split furnace 6 drilled fan holes 13 in the remaining (usually larger) bundle of coal II at the roof of the reservoir, which bounces on the compensation gap 12, the parameters of which (cracks) are selected depending on the layer thickness and coefficient of loosening of coal (N 1, 3). Part of the broken coal is selected. Then drilled, charged and explode boreholes across the layer thickness, in the next 1/3 of the substage I, zone III; after cutting coal repulsed zone III drilled and explode the boreholes in zone IV. After unloading the broken coal which are stated sewage treatment works in the following band 1 in the same order.

Airing stope in the band 1 is carried out as follows: fresh air coming through the hole 3 in the subsequent working for the band, through the linkage of the 5 comes in longwall working face 14 and the well 3, located in a working band 1, goes on the air passage 8, To prevent zakolachivaniya air flow split furnace 6 and the bore 3 on the ventilation drift overlap dense "folding doors". For additional emergency exit from the split furnace 6 through the bore 3, and merged by the linkage of the 5 split oven, hung metal ladder 15 from the ventilation passage 8 to the parallel roadway 10.

Advantages of the offered technology: even the sequence of operations, ensuring reliable ventilation stope, blasting coal compensation space, which leads to improving the efficiency of drilling and blasting operations and safety of mining operations.

How to develop powerful steep coal seams, including the division of the floor on padati, dredging coal in potatah stripes on the uprising with the use of blasting and magazynowania broken coal, characterized in that the breaking of coal in the band (substage) is ivanie stope lead through well, vyburivanija at the boundaries of the strips, while the borehole, which are split furnace for working bands, connect Bonami to the well, which are (wyborowa) for the next adjacent strip.

 

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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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