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IPC classes for russian patent Method for mineral preparation along with releasing thereof from under-roof layer (RU 2269002):
Another patents in same IPC classes:
 Method for extracting thin and extremely thin steep-falling and slanted deposits / 2255222
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.
 Method for extraction of thin and extremely thin steep-falling and slanting deposits / 2255221
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 Method for extraction of mineral resources deposits / 2249696
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 Method for preparation of mineral resources deposits to reversed extraction order / 2247242
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Underground extraction method / 2246617
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.
Method for controlling hard-destructible ceiling / 2246618
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.
Method for preparation of mineral resources deposits to reversed extraction order / 2247242
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.
Method for extraction of mineral resources deposits / 2249696
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.
Method for extraction of steep-dropping and slanting deposits of lowe and average massiveness / 2254467
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.
Method for extraction of inter-panel support blocks / 2254468
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.
Method for extraction of thin and extremely thin steep-falling and slanting deposits / 2255221
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.
Method for extracting thin and extremely thin steep-falling and slanted deposits / 2255222
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.
 Method for mineral preparation along with releasing thereof from under-roof layer / 2269002
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.
 Underground mining method / 2269003
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.
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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
The invention relates to coal and mining industry and may find application in mining of thick flat and slightly inclined layers of minerals with the use of wastewater treatment systems providing the recess with the additional release of minerals from the roof strata.
There is a method of preparation of thick layers of minerals to mining, including drilling, excavation workings of wells and discharge them in softening reagent (A.S. NO. 989069, E 21 41/04).
The disadvantage of this method is the use for processing mineral softening reagent extraction workings, which reduces the efficiency of extraction of minerals because of the lining operation loss of strength of the roof strata with immediate seizure by the Shearer or plow, and because of this reduced production from the mined area of the mineral, and due to the lack of drilling tools for drilling long and directional wells are restrictions on the length of the stope (lava), and also for drilling from the excavation of the drift in the underlay thickness to the direction of the borehole at an angle that reduces the quality of processing.
The known method of preparation for the excavation of the fire reservoir of minerals, including tunnelling generation ahead of the stope from kotorogo both sides of the layer of mineral drilling of wells to supply them softening reagent, and after processing, and retrieval of sealants production equip degassing pipe (Application No. AV, IPC 7 E 21 41/18).
The disadvantage of this method is to achieve a minor radius processing of minerals, which leads to increased drilling activity, the need for developing equal to the length of the stope and thereby increases the amount of preparatory work, and also forced to delay operations for removing the gas from the reservoir, as to the operation start after processing softening reagent only prepared to recess fossil.
Known widely used method for softening PetroChina over the lining of the complex management of the roof through the use of tools for drilling over the support set of boreholes, wells for loading and blasting them in explosive materials (Integrated mechanization of excavation of sloping layers of Kuzbass. M.: Nedra, 1972, p.65-66).
The disadvantage is the use of a large amount of drilling and blasting operations, which increases the risk for staff in the area of blasting as produce large quantities of coal dust, the danger of ignition of methane, as well as the energy of the explosion causes the dynamic loads on the lining of the mining complex, Shigeyoshi resource their work.
The objective of the invention is to increase efficiency in preparation for the excavation of minerals and security in its slot.
According to the invention the task is solved by carrying out production in thicker underlay ahead of the stope, the drilling of the wells and effortlessly place a call portinale-pulse supply in wells softening reagent, which ahead of the stope spend stub drift length, the smaller the length of the stope, which drilled wells for subsequent submission to them softening reagent, and between these additional wells are drilling the intermediate wells for subsequent pumping gas and handle underlay thickness, leaving raw packs directly over the posts of the stope, at every stage submit softening reagent into the appropriate wells and the pumping of gas from the intermediate wells and after 1-2 days of exposure filled softening reagent wells served in the intermediate wells. To achieve the lowest costs softening reagent and the uniformity of processing underlay thickness using a rolling wells initially they serve the maximum necessary amount of softening reagent with the set pressure and the rate of discharge ezuprechnaya the reagent, and then with each subsequent treatment area extracting device for pumping from wells, as specified filing softening reagent in the fan hole is gradually reduced. By rough handling softening reagent individual sections of the roof strata and to ensure the best conditions for its release with increased manageability roof collapse at a distance of not less than one meter from the stope drilling of wells in the underlay thickness with a slope in the direction of its collapse, and to control the collapse of the roof continue drilling into it for further processing using a softening reagent or explosion of private wells through established for the roof step collapse with the formation of the smallest length of her console.
The invention is illustrated by drawings, where figure 1 shows a diagram of the preparation of the block when processing underlay thickness, figure 2 a section a-a figure 1, and figure 3 a section b-B figure 2 on the roof of the reservoir.
The preparation of a useful mineral for extraction start with a stub generation 1 from counting longwall face 2 ventilation 3 and transport 4 brumbelow connected with excavation 1 through ORT 5 (2), and the distance between the dead-end workings 1 is more than two lengths drilling (>2lδ) taking into account the maximum is th possibilities of used drilling equipment, providing directional drilling horizontal wells.
Then, from generation 1 in the underlay thickness drilling of wells 7, 8, 9 and wells 7 and 9 introduce softening reagent, and from the intermediate hole 8 siphoning off gas from the reservoir of minerals and after daily exposure softening reagent in the wells 7, 9 it is served in the well 8 and so on drilling of wells 10 and 11 with the supply of softening agent into the well 11 and the exhaust gas from the well 10, with subsequent filling of the softening reagent and thus, gradually feeding softening reagent into the appropriate wells and is evacuated from the gas from the intermediate wells, carry out effortlessly place a call portinale-pulse processing softening reagent only prepared to recess from the stub generation 1.
When processing a fan of wells 12 in the same way, but initially when processing the 1st zone in each well serves greatest need (estimated) number of softening reagent is installed for a given reservoir pressure and rate of discharge, and then during subsequent processing zones with removing the feeder reagent these parameters gradually decrease with decreasing radius handle and handle fan of wells 12 scheme 13 (figure 1 diagram shown conventionally).</>
In case of detection of defective processing of individual sections of the roof strata in her Buryats with an inclination in the direction of its collapse at a distance of not less than 1 m from the stope 2 wells 14 and the tilt angle, for example, is formed in the direction of its bottom to its possible contact 15 with the roof 16 and to an imaginary plumb line 17 from the contact point 15 does not go beyond the back of the rack 18 of the lining of purification of the complex by the value of a single podvigina 19, and for the collapse of the roof 6 continue in her drilling 15 mounted to the roof 16 step caving 20 (figure 3) with the smallest length console s subsequent supply in wells 15 softening reagent or explosion separate wells 22 and the distance 23 between the holes 15 in the roof of the reservoir in the direction of the stope.
The proposed method will allow us to expand the scope of treatment systems to ensure the production of coal from the roof strata with increasing emptied of its power, and thus reduce the height of removable strips directly excavation machine (harvester, plough), achieving reduction of metal purification of the complex with increasing the bearing capacity and reduce energy consumption of the destruction of the fossil. To increase the security of the work, excluding a large amount of drilling and blasting operations, and to achieve maximum extraction of gas from the Lasta forced by pumping preemptive his softening reagent, what is best degassing it, currently the largest degassing is carried out by increasing the diameter wells up to 300-500 mm
1. Method of preparation for the excavation of minerals to release it from the roof strata, including in her generation ahead of the stope, the drilling of the wells and effortlessly place a call portinale pulse flow in wells softening reagent, characterized in that the front stope spend stub drift length, the smaller the length of the stope, which drilled wells for subsequent submission to them softening reagent, and between these additional wells are drilling the intermediate wells for subsequent pumping gas and handle underlay thickness, leaving raw packs directly over the posts of the stope, at every stage submit softening reagent in appropriate wells and pumping gas from the intermediate wells and after 1-2 days of exposure filled softening reagent wells served in the intermediate wells.
2. The method according to claim 1, characterized in that to achieve the lowest costs softening reagent and the uniformity of processing underlay thickness using a rolling wells initially they serve absolutely essential if estvo softening reagent with the set pressure and the rate of discharge softening reagent, and then with each subsequent treatment area extracting device for pumping from wells specified parameters supply softening reagent in the fan hole is gradually reduced.
3. The method according to claim 1 or 2, characterized in that when poor handling softening reagent individual sections of the roof strata and to ensure the best conditions for its release with increased manageability roof collapse at a distance of not less than one meter from the stope drilling of wells in the underlay thickness with a slope in the direction of its collapse, and to control the collapse of the roof continue drilling into it for further processing using a softening reagent or explosion of private wells through established for the roof step collapse with the formation of the smallest length of her console.
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