Method of processing of a cutting site

FIELD: mining.

SUBSTANCE: method of working out the excavation site includes the excavation of the excavating and ventilating drifts, the chamber mining system, the transportation of the mineral by the conveyor. The excavating drift passes to the middle of the excavation site, then the auxiliary drifts pass at an angle to the excavating drift. The cleaning chambers are worked from the auxiliary drifts. Auxiliary excavation gates pass at an angle of 30-60 degrees to the excavation drift. The cleaning chambers within the excavation site are worked both in the meridional and in the latitudinal direction. The mouth of the cleaning chambers in the latitudinal direction is located diagonally from the mouths of the treatment chambers in the meridional direction.

EFFECT: invention reduces the amount of mining preparation works by reducing the length of the extraction, and the face ends of conveyor, enhance security operations.

4 cl, 4 dwg

 



 

Same patents:

FIELD: mining.

SUBSTANCE: method includes drilling of the single down wells with placement there of explosive charges, consecutive detonation of single down wells and formation of a compensation crack along the contact ore - rock with formation of a concave exposure surface in solid ore, rows of concave wells in the ore cavity are arranged in congruent manner to a concave exposure of the compensation crack at the distance equal to the least resistance line, the last row is arranged along the line of the contact ore - rock, rings of wells are drilled with insufficient drilling 1 m to the contact ore - filling, finally the rows of rings of wells are drilled at the boundary with the compensation crack, in the wells the explosive charges are placed with insufficient charge, rows of rings of wells are blasted with delayed action to the surface of exposure of the compensation crack, and finally a row of rings of wells at the contact ore - rock is blasted.

EFFECT: invention allows to improve safety and efficiency of conducting explosive works.

3 dwg, 1 ex

FIELD: mining.

SUBSTANCE: invention relates to a method for prevention and control of sudden zonal emissions of coal and gas from coal beds. A method for prevention and control of sudden zonal coal and gas emissions, according to which a mining area is divided into mining zones (5) by distribution of defects and corrugations in a deposit so that boundaries of mining zones are located as far as possible in axial parts of defects or corrugations. Direction of maximum stress is determined in soil along horizontal direction in mining zone (5) by a conventional test method of stress in soil. With that, when an adjacent angle between the measured direction of maximum stress in soil along the horizontal direction and a coal bed passage line is less than 45, inlet ventilation opening (4) and ventilation opening (3) for a backward jet is located for the mining zone along the coal bed passage line. Then, strike entry driving is performed, and inlet ventilation opening (1) and ventilation opening (2) for the backward jet is located for a working face along the coal bed passage line so that there can be performed mining operations in working face (6) located along the coal bed passage line. When the adjacent angle between the measured direction of maximum stress in soil along the horizontal direction and the coal bed passage line is more than 45, inlet ventilation opening (4) and ventilation opening (3) for a backward jet is located for the mining zone along the coal bed passage line. Then, strike entry driving is performed, and inlet ventilation opening (1) and ventilation opening (2) for the backward jet is located for a working face along the coal bed passage line. And then, strike entry driving is performed so that there can be performed mining operations in working face (6) located along coal bed inclination.

EFFECT: simplifying the method, obtaining a favourable effect of prevention of sudden emissions and reducing concentration of stress in a working face.

2 dwg

Transfer of muck // 2539090

FIELD: mining.

SUBSTANCE: proposed process comprises breaking of rock by combine, loading of the into self-propelled car, its transfer from working zone scraper conveyor, transfer to ore-pass well and discharge to main conveyor. Scraper conveyors are arranged in parallel nearby each other. Note here that conveyor unloading fights are arranged above ore-pass wells while conveyors are timed. Quantity of parallel conveyors allows the width of discharge surface for locating of crushed ore without fall on working soil.

EFFECT: higher efficiency of combine working.

2 cl, 2 dwg

FIELD: mining.

SUBSTANCE: this method consists in development of the set of coal seams in ascending order in system "Long direction of strata" with excavation. Rock pressure is control by collapsing the roof rocks in exposed space with subsequent isolation. Note here that first the set bottom seam is mined with advance degassing and continuation of gas suction therefrom at mining of overlying undermined seams. Then, overlying seams are mined in ascending order. Note here that mine fluids are collected from the entire set of coal seams at bottom seam bottom point at its mining with the feed of aqueous solution of antipyrogenes into stripped area. After working of bottom seam advance seam degassing is terminated. Barometric pressure is maintained in worked space by discharging fluid gases from sources below the set. Note here that advance degassing in overlying seams is not used at stripping. Besides, feed of aqueous solution of antipyrogenes into stripped area is performed from bottom seam into stripped area of every of the next stripped coal seams.

EFFECT: higher safety, lower costs.

2 cl, 2 dwg

FIELD: mining.

SUBSTANCE: proposed method comprises mechanised pre-working and stabilisation in coal massif, protection of opened space against adjacent column by coal post. Compensation cavities are made in virgin massif, nearby bed soil, and separated by coal post. Cavities and coal posts there between on massif side and opened space are arranged in staggered manner. Width, height and depth of cavities are defined on the basis of coal seam mining and geological conditions and heading machine performances. Coal post width between compensation cavities is calculated with due allowance for empirical factor equal to 1.3 at working in virgin massif and equal to 1.6 at working in adjacent column abutment pressure zone, seal depth (post height) and seam cubical compression strength.

EFFECT: higher stability of working, lower losses of coal in posts, no need in additional barring.

3 dwg

FIELD: oil and gas industry.

SUBSTANCE: double-ended method of the deposit opening during underground operations includes shaft sinking of at least two holes, each hole having its own job site. Opening of the deposit is made by underground horizontal and/or inclined workings from each hole. As the shaft sinking progresses the underground horizontal workings are made from the hole at a distance of at least 5 diameters of the hole. Vertical wells are drilled from the surface and horizontal cuts and when the lower horizontal working is reached the well is drilled up to the project diameter of the air raise. Horizontal workings are placed vertically, one by one, at a distance to be determined by technical capabilities of the drilling rig. The upper part of the air raise is made from the surface through quaternary deposits by a usual method. At the first stage each end of the deposit is ventilated separately, at the second stage fresh air is supplied through a pair of combined developments - a borehole and the air riser at one end while outgoing jet is outputted through the combined developments of the other end.

EFFECT: method allows reducing scope of works during shaft sinking, increasing the sinking rate, reducing the period of construction and commissioning of a mine or minery, increasing reliability of ventilation due to ventilation risers.

3 dwg

FIELD: mining.

SUBSTANCE: method involves formation of lower slashing of formation by means of a plough unit with movement into it of a hauling conveyor, cutting in bottom-hole massif of a rear vertical slot and a slot that is upper along the boundary with the roof, which are longitudinal throughout the face length, lowering of the massif onto the conveyor, splitting of a mineral into slabs, output of the mineral from the face in slabs, their lowing into trolleys and locomotive haulage to a bulk material crushing chamber. In the massif settled down on the conveyor there cutout are inclined transverse slots splitting the massif into inclined layers that are then transferred to horizontal position for splitting of the mineral into slabs. Cutout of vertical transverse slots is performed using a motor-driven multi-jib machine.

EFFECT: high efficiency of a mining face, maximum extraction of mineral deposits from the formation being developed, extraction of methane from the produced mineral, safety of second working as per gas factor and sanitary-hygienic conditions of underground production as to dust.

2 cl, 2 dwg

FIELD: mining.

SUBSTANCE: invention relates to mining industry and may be used in development of thick edge ore bodies with unstable and precious ores, for instance, kimberlite pipes, by the underground method. The method includes formation of man-made massif with tunnelling and filling of stopes at the cut and undercut layer, descending extraction of reserves under the man-made massif and filling of the mined space. Under the man-made massif they form a transition layer-sublevel by alternate tunnelling of the stopes of the first phase, with height equal to the height of the layer, and stopes of the second phase, the height of which is equal to the height of the layer-sublevel, at the same time the stopes of the first phase is given the shape of the tilted trapezoid in the vertical cross section, and stopes of the second phase - the irregular hexagon, besides, the width of the upper bases of figures of these stopes and width of stopes of the above (undercut) layer are accepted with equal value. Reserves of the deposit below the transition layer-sublevel are mined by chambers in staggered order with a shift to a sublevel. Chambers in the cross section are given the shape of the hexahedron extended along the vertical line. The upper part of the chambers is formed in the form of a trapezoid with size of half of chamber height, the contours of the upper base of which match the contours of the base of the filled stopes of the first phase in the transition layer - sublevel, and contours of the lateral upper sides - with contours of the lower sides of the filled adjacent stopes of the second phase. The lower part of the chamber with the size of half of its height is given the shape of the tilted trapezoid in the vertical cross section.

EFFECT: invention makes it possible to increase intensity of mining of ore deposits, to increase size of an extraction unit and to reduce costs for filling works.

5 cl, 2 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining, and namely to production of useful minerals by an underground block leaching method. The underground block leaching method of useful minerals involves driving at the block bottom of openings of drain horizon for collection of productive solutions, crushing and shrinkage of ore so that a drain horizon of a safety pillar is left above openings, drilling of upward pumping wells from openings of drain horizon through the safety pillar, supply through them of a leaching solution to shrunken ore, collection of productive solutions in openings of drain horizon. Upward pumping wells from openings of drain horizon through the safety pillar are drilled to lower boundary of shrunken ore, and the leaching solution mixed with air is supplied to shrunken ore via upward pumping wells in a hydrodynamic cavitation mode.

EFFECT: invention allows increasing extraction degree of useful minerals from ores, shortening leaching duration and reducing flow of leaching reagents.

3 cl, 2 dwg

FIELD: mining.

SUBSTANCE: transportation of mineral deposit crushed with a combine is performed by means of a self-propelled wagon to a self-moving snaking conveyer, the loading part of which is located in a chamber, and the unloading part is located above an ore-passing well, via which the mineral deposit is transported and unloaded to the ore-passing well; with that, movement of the conveyor to the next well is performed when transportation length of mineral deposit with the self-propelled wagon in the chamber achieves maximum length determined as per mathematical expression. Limit length of the chamber, at which continuous operation of the combine is provided by means of a hopper-loading elevator, the self-propelled wagon and the self-moving snaking conveyor, is calculated as per the mathematical expression.

EFFECT: improving working capacity of a combine complex.

2 cl, 4 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: method includes partial filling of extracted space of side and central mains by filling stripes from lava extracting shafts. At center of semi-lava on the side of massive, wherein next extractive column will be cut, filling shaft is additionally driven, wherefrom full filling of space between central fill stripe and fill stripe on the side of massive is performed. Preparation of next extraction column is performed under protection of erected fill stripes.

EFFECT: higher safety, higher efficiency.

1 dwg

FIELD: mining industry.

SUBSTANCE: method includes cutting well field portions by driving bed and field mines. At mine fields to be prepared with weak rock stability driving of several field preparatory mines is performed at portion of field with width determined from formula. Bed preparation mines on same portion are driven alter, with displacement of cleaning operations from these may be driven in portions, at which their stability is provided for technological time period with inter-drift blocks of given rigidity.

EFFECT: higher safety.

2 cl, 1 dwg

FIELD: mining industry.

SUBSTANCE: method includes extraction of mineral resource by underground mine method in liquid environment, under protection of water-resistant rock massif. Full flooding of auxiliary extracting and preparatory mines is performed, which provide for start of wiping operations, with working liquid, neutral relatively to mineral resource and enveloping rocks and being under pressure, matching value of pressure at depth of mine. Process of removal of separated rock beyond underground flooded space is synchronized with replenishment of working liquid volume in this space. Working liquid pressure can be formed by effecting it with force liquid, which is placed either in mine shaft, hydraulically connected to lower flooded auxiliary extracting mine, or in mine shaft and force column, placed on earth surface, above mine shaft, and hydraulically connected thereto. Required height of force liquid column is determined from mathematical expressions. After mineral resource extraction is finished within mine field, flooded extracted space is used for placement of toxic and non-toxic wastes of industries or strategic objects, while process of transfer of wastes or strategic objects into liquid environment is performed synchronously with removal of working liquid beyond flooded space in volume, equal to volume of transferred wastes or strategic objects.

EFFECT: higher safety.

3 cl, 1 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: method includes separating resources of all levels on blocks, in form of upwardly elongated hexahedrons. Blocks on adjacent levels are positioned in staggered order with displacement of some of them relatively to others for half of blocks width. Resources of each block within limits of hexahedron are divided on two portions: hexagonal chamber inside the block and block itself of same hexagonal shape on all six sides of chamber. Preparation and cutting of chamber resources is realized by driving field level drifts and mines, intermediate sub-level drifts and mines, and also level and sub-level orts and drifts, driven through mineral resource, from which resources of chambers and blocks are drilled and exploded. Extraction and outlet of mineral resource is performed in three rows - first chamber resources, than inter-chamber blocks under protection of ceiling blocks, after that ceiling blocks deposits. Outlet of resources from chambers and blocks is performed trough ends of level orts and mines, an also through ends of intermediate sub-level mines.

EFFECT: better use of mineral resources, lower laboriousness, lower costs, decreased block preparation time.

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes determining width of edge zones of block, subjected to influence from support pressure, then preparatory mines are driven along block at limits of these zones and permanent rigid supports are erected therein. After that portion of block from preparatory mines to block center is extracted.

EFFECT: increased mineral resource yield coefficient, safer extraction of inter-panel support blocks, without breaking their carrying ability and without using backfill materials.

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes dividing a level on hexahedral sections of upwardly elongated shape and is prepared by driving of field backup drift. From drift below each section shafts are driven, from which along mineral resource ascending shafts are drilled. For drilling chambers deposits by wells, sub-level drift is driven along mineral resource, access to which is provided by driving field sub-level drift and shafts. Outlet of extracted rock is performed through ends of shafts. After letting out rock from all sections ceiling beam is brought down and also let out through ends of shafts.

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

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes separation of a level on hexahedral sections of upwardly elongated shape and is prepared by driving of field backup drift. From the drift shafts are driven below each section, from which along mineral resource ascending shafts are drilled, meant for drilling from them by horizontal or slanting wells and extracting sections resources. Outlet of extracted rock mass is performed through ends of shafts. After outlet of rock mass from all sections ceiling beam is brought down and let out also through ends of shafts.

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

2 dwg

FIELD: mining industry, particularly methods of underground mining.

SUBSTANCE: method involves advancing breakage face in under-roof layer; drilling bores in the under-roof layer and injecting weakening reagent to separate zones through the bores; drilling blind drift in front of the breakage face, wherein the blind drift has length of not less than breakage face length; drilling bores for following weakening reagent injection from the blind bore; additionally boring intermediate bores between above bores for following gas exhausting; performing under-roof layer development so that non-developed bank is left directly above breakage face support; performing stepwise weakening reagent injection into corresponding bores and evacuating gas from intermediate bores; leaving bores filled with weakening reagent for 1-2 days and supplying the weakening reagent into intermediate bores.

EFFECT: increased efficiency of mineral preparation.

3 cl, 3 dwg

FIELD: mining, particularly methods of underground mining.

SUBSTANCE: method involves cutting mineral by hydrocutting machines and headers from face massif in rectangular blocks; putting on metal cases on the blocks to facilitate loading-and-unloading operations and transportation; loading the cut blocks on hauling truck along side previously opened from breakage face side, wherein the truck position is fixed by spacing apart hydraulic post permanently connected to the hauling truck; moving loaded hauling trucks inside breakage face by hauling tracks along channel, V-shaped guiders or guiding rails with the use of haulage cargo winches arranged in berms near conveying tunnels or with the use of independent drives, wherein the conveyance is carried out to conveying and venting tunnels abutting the breakage face; loading mineral blocks from hauling trucks onto wheeled transport platforms without block turning for following transportation. Distance between rail tracks is equal to rail track width to transport blocks on paired wheeled platforms in which locomotive moves along medium track. Working area face is strengthened by individual hydraulic posts and metal hydraulic jacks and metal roof bars or by mechanized face support. The face support has fastening sections including above hydraulic jacks and roof bars, as well as wheel guiding means sections and hydraulic movers with control panel arranged on each fastening section pair. The roof is controlled by partial filling the excavated space with mineral blocks. Distance between neighboring mineral units arranged on one paired wheeled platform and on adjacent platforms may be identical and equal to distance between guiders in breakage heading. Mineral blocks are cut in several rows, wherein depth of slot at seam ground and roof is two times as thickness of mineral blocks to be cut.

EFFECT: increased output, improved safety and ecology.

3 cl, 14 dwg

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