Method for opened development of superimposed mineral deposit beds

FIELD: mining, particularly opened mining of horizontal and flat-lying seams.

SUBSTANCE: method involves cutting upper stripping ledge and rock interlayer ledges by shovel in mined-out space; mining mineral and conveying thereof. Covering stripping and rock interlayers are cut simultaneously with the use of single shovel located on lower rock interlayer roof. Upper stripping ledge is developed by upward digging operation, rock interlayers are developed by upward and downward digging operation performed during reverse shovel movement, wherein shovel moves along zigzag path and throws interlayer rock between ridges of banks.

EFFECT: increased efficiency of deposit development.

2 dwg

 

The invention relates to the mining industry and can be used for open development of horizontal and sloping layers of minerals and rock interlayers of small capacity, thus covering overburden are weak, half-rock or hard rock fortress of no more than eight on a scale professional Protodiakonov and practiced by the excavator of the type dragline, dumping overburden in the mined-out area, possibly with the use of drilling and blasting operations.

There are several ways of developing such fields:

The most common way of developing such deposits is a way, when overburden is removed in layers, i.e. after the opening of the first layer, make the extraction of minerals, then make the opening of the next layer and so In practice most of the prey are together and rock layers, which leads to the dilution of a useful mineral, or select one layer and the rest of my breed Guide. Open pit mining. - M.: Mining Bureau, 1994. Str).

The disadvantage of this method is the loss of minerals.

The closest way to the same destination to the claimed invention on the totality of symptoms is the way the open development of contiguous horizontal layers useful and the dig (SU 1528909 A1, E 21 C 41 J/00 from 19.02.1988, epubl. Bulletin no.46, adopted for the prototype).

The method involving separation of the career fields on paired plots, the practice of Stripping ledge and the ledge mitoplast on plots benches with dumping overburden in the blade along the front of mining operations and mining of the upper and lower mining benches benches with the transportation of minerals. On the first of the paired sites are working off the top of Stripping ledge, the top of the mining ledge and the ledge mitoplast, on the second of the paired plots are testing the bottom of the mining ledge. Mining overburden benches are draglines with installing them on the roof of layers of mineral and mining overburden ledge and the ledge mitoplast produce top draws.

The disadvantages of this method: drilling field are two draglines, thus reveal only two layers.

The present invention aims at improving the efficiency of field development, reduction of losses and dilution due to simultaneous testing covering overburden and rock layers with reference to the internal blade without transshipment one excavator.

Figure 1 shows the site plan, figure 2 shows a section of the site.

In the drawings, the following notation: 1 - upper Stripping us the UE, 2 - top mining bench, 3 - the first ledge of the rock formation, 4 - medium mining ledge, SHRP - mining width of the working platform, 7 - area failover upper Stripping ledge, 8 - square testing of the first rock formation, 9 - area of the second rock formation, 10 - internal dump waste rock top Stripping ledge, 11 - internal dump waste rock waste rock interlayers, 12 - internal dump the previous benches.

The development is carried out with a wing that has the lowest capacity of overburden. Spend capital mining operations and after creating space for placement of overburden in the developed space use the following method.

The invention consists in the fact that mining operations are simultaneously six ledges (figure 2): the upper Stripping ledge 1, top mining ledge 2 ledge of the first rock interlayer 3, the second ledge mine layer 4, the second ledge of the rock formation 5, the ledge of the third production of the reservoir 6. Overburden excavator fitted on the roof of the last breed of the interlayer 5, at the lower edge of the second mining ledge. The upper drawing practice overburden upper Stripping ledge 1 upcoming course on the width of the working area of the mining ledge 7. This breed is placed in the mined-out area 10. C is the move the excavator to the edge of the ledge and retreating stroke work rock layers top and bottom draws 8, i.e. moves in a zigzag, the rock layers have crests of the piles 11. Extraction is carried out in the usual way with the transportation of minerals. The width of the working area depends on the type of mining equipment and transport. When mining overburden using blasting to increase the working area of the excavator. When developing the two layers of minerals and one of the rock formation, the method is simplified.

Unlike the prototype, handling covering overburden and rock layers are performed simultaneously using a single excavator located on the roof of the bottom of the rock formation and rock interlayers work retreating stroke, the upper and lower drawing, excavator, moving zigzag, throws a rock interlayers between the crests of the piles.

The method of open pit mining of bedded deposits of minerals, including the refinement of the upper Stripping ledge and ledges of rock layers by the excavator in the mined-out area and production of minerals with its transportation, characterized in that the testing covers the overburden and rock layers are performed simultaneously using a single excavator located on the roof of the bottom of the rock formation, and the development of the upper Stripping ledge is going top draws, and rock interlayers work retreating movement of the upper and lower drawing, the excavator, moving zigzag, throws a rock interlayers between the crests of the piles.



 

Same patents:

Dump forming method // 2272908

FIELD: mining industry, particularly to form single-layer dump or lower layer of multilayer dump along with successive and simultaneous creation of dump layers.

SUBSTANCE: method involves creating dump layer by unloading rock within predetermined land zone from vehicle performing a number of runs onto the layer in radial direction. The layer filling is carried out by longitudinal sections in direction away from pit and rock is freely laid in single direction within the limits of each above layer section. Above mentioned vehicle runs are began from pit exit end.

EFFECT: possibility to create dump over the full land zone near pit and at remote locations.

4 cl, 2 ex, 3 dwg

FIELD: methods of surface mining, particularly to transport rock from open-cast mine.

SUBSTANCE: hoisting device comprises drive, haulage rope and load container with spherical balloon. The balloon is enclosed in teardrop-shaped shell. The head shell part is directed towards upper horizon, bottom part thereof is opened and provided with stiffening ring and stringers.

EFFECT: reduced power input and provision of favorable drive operation conditions, reduced haulage rope cross-section and, as a result, reduced hoisting device size as a whole.

2 dwg

FIELD: mining art, applicable for mining by open method in rocky and semirocky rocks at placing of high benches on planned contour.

SUBSTANCE: the method consists in collaring of inclined holes from the upper bench to be height of a doubled bench, for production of a cut-off slot at formation of the upper inclined part of the bench and contour vertical holes from the intermediate bench to the same depth for formation of the lower vertical part of the bench, loading and blasting. The novelty in the method is in the fact that the drilling of holes of the contour row from the intermediate bench is performed in three stages: initially in the first stage drilled is the part, of inclined holes from the initial to the final point of the section of sloping with one direction of inclination, in the second stage drilled are the inclined holes of the contour row having the same inclination and the same distance between the holes as in the first stage, but in the contrary direction, in the third stage between the mentioned inclined contour holes drilled are vertical contour holes, the inclined holes of the contour row are loaded by a permanent charge from the face to the mouth of the holes, and in the vertical contour holes positioned between the inclined contour holes, the amount of the charge is changed successively from the face to the mouth, corresponding to the minimum distance between the inclined and vertical contour holes at the bottom of the lower bench is the minimum charge in the vertical contour hole, which in proportion with removal from the bottom of the lower bench successively increases, reaching its maximum value at the bottom of the intermediate bench, at the maximum distance between the inclined and vertical contour holes at the bottom of the lower bench the value of the charge in the vertical contour hole from the face to the mouth is changed in the reverse order.

EFFECT: enhanced efficiency of sloping.

7 dwg, 1 tbl

FIELD: mining industry, particularly opened cast mining.

SUBSTANCE: method involves dividing and successively providing shifting of overlaying hill-shaped rock layers outside the cast by drilling well rings in shifting plane from drilling rooms, wherein the wells extend at an angle enough to initiate layer shifting during sliding surface preparation in rest prism area; placing charges into the wells and blasting thereof in rest prism area; supplying clay mix by its own gravity before sliding surface preparation in upper pressure prism part; blasting well rings in pressure prism area; opening the mine; excavating mineral and overburden rock; developing the cast up to design depth with cast wall building and creating dump of crashed overburden rock at cast contour.

EFFECT: increased efficiency of mineral excavation and reduced overburden ratio.

1 ex, 6 dwg

FIELD: mining industry, particularly to built non-working pit wall in permafrost ground.

SUBSTANCE: method involves loosening rock, constructing trap trench along haulage berm under the berm and forming protective rock bank. Trap trench is of triangular shape and one side thereof arranged opposite to main slope of non-working pit wall has inclination angle of not less than 36° and not more than 40°. Horizontal adjustable rebound area panel is left in area extending from lower ledge edge to trap trench contour. Rock loosening within area defined by excavation contours of working ledge and trap trench is performed by simultaneous blasting out blast-holes and trench-forming holes of the first and the second rows. Holes of the first and the second rows are drilled in working ledge and have subdrilling depth equal to trap trench depth and to one-half thereof correspondingly. Distance between the rows is determined from the given relation.

EFFECT: reduced volume of works for trap trench forming.

1 ex, 4 tbl, 5 dwg

FIELD: mining industry, particularly for open-cast mining of steeply inclined, even vertical, laterally bounded ore body, for instance diamondiferous kimberlite pipe under flooded conditions.

SUBSTANCE: method involves forming hydraulic-mining dump; opening quarry field by pit excavation; filling the pit with water; installing floating pump dredger in plant with cutter; performing rock excavation at quarry field; transporting the obtained rock to ground surface through pulp conveying line and conveying dead rock to hydraulic-mining pump. The quarry field is previously zoned into horizontal layers (horizons) and quarry field development is performed by cutting horizontal layers in top-bottom direction so that water level is lowered as layers are excavated and water surface is maintained at current production horizon level.

EFFECT: reduced power and cost inputs for field dewatering.

3 cl, 2 dwg

FIELD: mining industry, particularly crystal-saving diamond mining when developing permafrost kimberlites under difficult hydrogeological conditions of permafrost zones.

SUBSTANCE: method involves loosening rock, converting rock into pulp and conveying pulp through pulp line by dredger. Before subpermafrost zone opening hole having large diameter is driven from pit bottom for the full depth of field to be developed and inclined borehole is built. The borehole is connected to the hole in point located at said depth and then high-pressure subpermafrost brine is pumped into the pit. Airlift dredger is arranged on water body surface, ripper-dozer provided with all-purpose boring bit is lowered on pit bottom. Loosening of kimberlites weakened by brine is performed by ripper-dozer along helical cuts. Fine ore cuttings are conveyed by means of airlift through pulp line to ore mill. Coarse ore cuttings are moved to ground surface to ore storage through hole, caisson drift and inclined borehole provided with skip hoist. Kimberlite pipe development below pit bottom is performed at right angles of faces depreciation without performing overburden operations.

EFFECT: increased gem diamond yield and resource saving due to deep horizons with opened worked-out space development without overburden operations and improved ecological safety.

4 dwg, 1 ex, 1 tbl

FIELD: mining industry.

SUBSTANCE: method includes extraction of quarry to planned depth in stages with construction f boards with parameters, allowed from stability condition, shutting boards, finishing mineral resource massif. Building and shutting of temporary boards during extraction of steep layers of next level after change of order of extraction of opening and ore zones is started after construction and spacing in center of cut of well-like mine with vertical shelves, with parameters, which are provided for by minimal radiuses of rounded edges enough for movement of rock via spiral chutes to surface to outer dumps, with narrowing space towards bottom at level of opened level of deep portion of deposit with lesser total coefficient of opening of stage and finally board is constructed by steep vertical shelves in deep zone.

EFFECT: higher efficiency.

1 ex, 10 dwg

FIELD: mining industry.

SUBSTANCE: method includes opening deposit at distance 150 meters from river and forming of natural filtering wall between river and trench, pumping of water from trench into river, extraction of mineral resource, revegetation of dumps, filling of trench with water, accomplishment of formed water body. Mineral resource is extracted from two serially opened trenches - auxiliary, revegetated as water body, and main, positioned at opposite side of river, and soil from opening of which is used for revegetation of auxiliary trench, while in main trench along whole board on the side of river right beyond mining operations inner dump is formed with width not less than 250 meters and with height at same level with earth surface, water from trenches is fed into river, and then into water body through intermediate collectors, while after forming of water body currents of soil waters between trenches and river are made balanced, balance level is estimated on basis of water levels in auxiliary trench and river.

EFFECT: higher efficiency.

1 dwg, 1 ex

FIELD: mining industry, applicable for slanting of high benches at development of magmatic deposits of mineral resources by open pit.

SUBSTANCE: the method includes drilling of contour holes for formation of a screening peephole, buffer and breaking holes to a depth corresponding to the height of one working subbench with a redrill, the middle row of breaking holes is made with an incomplete drill, charging of the openings and their blasting, dispatch of the rock, after blasting first of outline openings, for formation of the screening peephole, and then of breaking holes and mucking of the rock, similar operations are performed on the underlying subbench of the lower high bench, at the development of the lower high bench, the development of the upper and lower benches is conducted by doubling of the working subbenches, at the development of the lower subbench of the upper high bench the outline openings are drilled to the whole height of the doubled bench, the buffer openings are drilled at a distance of 12 to 13 diameters of the charge from the outline openings and to a depth at least corresponding to the height of one working subbench with a redrill equal to 6-8 diameters of the charge, the first and last rows of the breaking holes are drilled with a redrill, equal to 4-5 diameters of the charge, and the incomplete drill of the middle row of the breaking holes makes up 7-8 diameters of the charge, after blasting of the buffer and breaking opening and mucking of the rock a crest is formed, from whose surface on the side of the slope outline and buffer openings are drilled, the first ones - to the height of doubled subbenches, and the second ones - to the height at least of one lower working subbench, then the breaking openings to the same height as in the above - and underlying subbenches and for production of a natural protective bank on the upper section of the lower high bench in the section of the berm the formed ridge is liquidated by drilling, charging and blasting of the openings of small diameter and depth.

EFFECT: enhanced stability of high benches on the outline of the open pit.

2 cl, 3 dwg, 1 ex

FIELD: mining art, in particular, open-pit mining of mineral resources by high benches.

SUBSTANCE: large-diameter single holes are replaced by a pair of divergent holes of a smaller diameter, in which one hole is always vertical, and the other one is inclined towards the bench; the single holes of the larger diameter are replaced with a pair of divergent bundles of parallel converged holes, in which one bundle is vertical, and the other is inclined towards the bench; the single holes of the larger diameter are replaced with a pair of divergent holes of a smaller diameter, in which one hole is vertical, and the other is inclined towards the bench and positioned in the vertical plane parallel with the first one and distant from it by 1-2 hole diameters; the single holes of the larger diameter are replaced by a pair of divergent bundles of parallel converging holes, in which one bundle is vertical, and the other is inclined towards the bench and positioned in the vertical plane parallel with the first one and distant from it by 1-2 hole diameters.

EFFECT: enhanced efficiency of blasting of the benches.

7 cl, 6 dwg

FIELD: mining industry.

SUBSTANCE: method includes dividing quarry on rows, of which first one is extracted to planned depth with external dump-forming, and extraction of following rows is performed with use of internal dump-forming, placing dug rocks to extracted space of adjacent row with common displacement of dump front with development of mining operations. Second and following rows of quarry are divided on basis of height on extraction levels, extraction of uppermost level is performed with placement of dug rocks in upper dump level of extracted space of adjacent row, using surface transporting communication lines, and during extraction of second extractive level dumping of dump level of inner dump is primarily performed by forming pioneer dump at longitudinal processed edge of quarry, on upper area of which transporting lines are placed and dumping of dump level is performed from there, with descent of mining operations in working area of extractive level profile of upper dump area is altered to provided necessary cargo communications of working horizons of extractive level to dump level, after extraction of extractive level remaining pioneer dump is dug to upper mark of following extractive level, and extraction of following extractive levels is performed analogically, using reformed upper area of pioneer dump.

EFFECT: higher efficiency.

10 dwg

FIELD: mining industry.

SUBSTANCE: method includes cutting steps with varying angles. Angles of double step slopes, different on basis of quarry depth, are formed with consideration of decrease of irregularity parameters with deposit depth, with natural block level of upper horizons and influence from mass explosions and wind erosion of rocks with gradual increase of their steepness until forming of vertical slopes of double steps during additional operations in quarry, while angles of slopes and edge portions on upper horizons in highly fractured rocks may be 50-55, in rocks of average and non-specific fracture levels - 70-60 and in low-fractured rocks may be 80-85, and edge portions 60-90 m high in deep portion of quarry with vertical double steps and preventive berms 10 m have slant angle 80-85.

EFFECT: higher efficiency.

6 dwg, 1 tbl, 1 ex

FIELD: mining industry.

SUBSTANCE: method includes extraction of quarry to planned depth with use of quarry ore chutes with accumulating bunkers, cutting ore chutes with deepening of mining in quarry, crushing ore blocks and pieces from face from bunker walls by explosives, loading ore to railway vehicles, cutting and shutting upper portion of ore chutes at each level when mining approaches there is performed by division on beds and semi-shelves with charges in wells, providing for crushing of rock to needed dimensions and safety of mine walls, and further decrease of pieces size and increasing efficiency of ore chute operation by excluding ore suspension is achieved by use of crushing assembly in form of bowl with plate at base, working as anvil under layer of rock, from where ore mass is self-propelled to bunker, and from there by feeder is sent to crusher and further through intermediate conveyer to main conveyer.

EFFECT: higher efficiency.

4 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: method includes extracting quarry to planned depth by ore and rocks extraction by displacement of shelves along horizons with transferring to crushing plants, crushing rocks and then delivering them by lifting device to the surface, during extraction of quarry to planned depth at first stage during construction of board at the end of quarry in zone of decrease of power of deposit in stable rocks conveyer rope system is constructed, connected to hoisting machine, to bed with recesses, allowing to raise crushed material to large height at steep angle and with deepening of mining and displacement of crushers to lower horizons conveyer system is extended to provide for optimal transport shoulder for gathering vehicles.

EFFECT: higher efficiency, higher productiveness.

2 cl, 6 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: method includes opening deposit of mineral resource along its length, extraction of opened rocks in shelves, forming on one of the portions of deposit of forward extracted space reaching planned bottom, moving rocks to external dumps and into extracted space, processing and transporting of mineral resource. Deposit extraction is performed in two directions - perpendicularly to length of deposit with deepening and along length to quarry bottom, while volume of extraction of mineral resource along length is increased and volume of extraction of resources perpendicularly to length is proportionally decreased.

EFFECT: higher efficiency.

2 cl, 3 dwg

FIELD: mining industry.

SUBSTANCE: method includes serial extraction of drifts with placement of opened rocks of drifts in extracted space of previous drifts, continuous combined processes of softening, extraction and movement of rock to dump. Drifts are positioned along cut trench, extraction is performed by adjacent horizontal shavings of face area, rock of each drift is moved by throwing directly to extracted space and compacted in range by realization of kinetic energy of rock.

EFFECT: higher efficiency.

2 dwg

FIELD: mining industry, applicable for slanting of high benches at development of magmatic deposits of mineral resources by open pit.

SUBSTANCE: the method includes drilling of contour holes for formation of a screening peephole, buffer and breaking holes to a depth corresponding to the height of one working subbench with a redrill, the middle row of breaking holes is made with an incomplete drill, charging of the openings and their blasting, dispatch of the rock, after blasting first of outline openings, for formation of the screening peephole, and then of breaking holes and mucking of the rock, similar operations are performed on the underlying subbench of the lower high bench, at the development of the lower high bench, the development of the upper and lower benches is conducted by doubling of the working subbenches, at the development of the lower subbench of the upper high bench the outline openings are drilled to the whole height of the doubled bench, the buffer openings are drilled at a distance of 12 to 13 diameters of the charge from the outline openings and to a depth at least corresponding to the height of one working subbench with a redrill equal to 6-8 diameters of the charge, the first and last rows of the breaking holes are drilled with a redrill, equal to 4-5 diameters of the charge, and the incomplete drill of the middle row of the breaking holes makes up 7-8 diameters of the charge, after blasting of the buffer and breaking opening and mucking of the rock a crest is formed, from whose surface on the side of the slope outline and buffer openings are drilled, the first ones - to the height of doubled subbenches, and the second ones - to the height at least of one lower working subbench, then the breaking openings to the same height as in the above - and underlying subbenches and for production of a natural protective bank on the upper section of the lower high bench in the section of the berm the formed ridge is liquidated by drilling, charging and blasting of the openings of small diameter and depth.

EFFECT: enhanced stability of high benches on the outline of the open pit.

2 cl, 3 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: method includes opening deposit at distance 150 meters from river and forming of natural filtering wall between river and trench, pumping of water from trench into river, extraction of mineral resource, revegetation of dumps, filling of trench with water, accomplishment of formed water body. Mineral resource is extracted from two serially opened trenches - auxiliary, revegetated as water body, and main, positioned at opposite side of river, and soil from opening of which is used for revegetation of auxiliary trench, while in main trench along whole board on the side of river right beyond mining operations inner dump is formed with width not less than 250 meters and with height at same level with earth surface, water from trenches is fed into river, and then into water body through intermediate collectors, while after forming of water body currents of soil waters between trenches and river are made balanced, balance level is estimated on basis of water levels in auxiliary trench and river.

EFFECT: higher efficiency.

1 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: method includes extraction of quarry to planned depth in stages with construction f boards with parameters, allowed from stability condition, shutting boards, finishing mineral resource massif. Building and shutting of temporary boards during extraction of steep layers of next level after change of order of extraction of opening and ore zones is started after construction and spacing in center of cut of well-like mine with vertical shelves, with parameters, which are provided for by minimal radiuses of rounded edges enough for movement of rock via spiral chutes to surface to outer dumps, with narrowing space towards bottom at level of opened level of deep portion of deposit with lesser total coefficient of opening of stage and finally board is constructed by steep vertical shelves in deep zone.

EFFECT: higher efficiency.

1 ex, 10 dwg

Up!