The method of reconstruction career with two adjacent ore bodies

 

The invention relates to the field of mining and can be used for the open development of mineral resources. The technical result is to increase the efficiency and completeness of the extraction of minerals while reducing the volume of overburden. The method involves separation of the pit at an intermediate stage of construction of the new boards that are generated internal ledges with parameters that are valid on their sustainability, and divided by a safety berm, formation of transport conventions and device divergent sites, at the stage of finalization accommodation transport communication part of the career fields in one of the ore bodies, the revision to the design depth, leaving the ore pillars, the phased development of tsepnogo Congress in the developed space before joining the Congress to limit the pit and Refine the ore pillars. Moreover, in the intermediate stage triple ledges rebuild convex-polygonal profile, from turning the site form a ring transport conventions opposite direction, refining the ore pillars are in layers due to the repayment of transport congresses, built by ore body at stages of completion in places steep the eak-before:always;">

The invention relates to the mining industry and can be used in the opencast mining of mineral deposits.

A known method of mining quarry to the project path through a phased development of career fields with layered excavation of rock mass and the formation of ledges, Kontorovich vertical wells with horizontal offset of safety berms and inclined transport congresses with platforms mitigate the angle of the track (RF Patent 2098627, E 21 41/26. Method of mining career. C. A. Milukov, G. A. Yakovlev, V. I. Kalashnikov and other Application No. 96102414/03 declared 14.02.96, publ. 10.12.97, bull. No. 34).

The disadvantage of this method is that the offset of the pit vertical ledges in the North cannot ensure long-term sustainability, especially in the area of the Board with a southern exposure, which reduces the safety of mining operations. In addition, opening career spiral congresses is not possible to apply a single movement of vehicles, to ensure complete extraction of minerals occurs a need to either increase Stripping or replacing technological fleet mA is Kim indicators mining quarry and economic.

The closest in technical essence and the achieved result is a way of reconstructing quarries, including the spacing of the pit at an intermediate stage of construction of the new boards that are generated internal ledges with parameters that are valid on their sustainability and separated safety berms, formation of transport Congress with a loop form, route and device divergent sites in places of change of direction of technological transport. At the stage of finalizing transport communication feature in one part of the career field, quarry work, leaving the ore pillar, by excavation of rock between him and the marginal contour of the pit and gradually form osypnoi Congress in the developed space before joining the Congress to limit the pit. After connecting transport congresses produce the final reorganization of the Congress by ore pillar and Refine the ore pillars, and the wall of the open pit to a height of ore pillars repay without transport conventions, with the formation of only the safety berms between the slopes dual, triple ledges (A. C. 1710754 the USSR, E. 21 41/26. The method of reconstruction of the quarries.by the necessity of multiple rearrangement in the process of finalizing career to the design of the bottom of the transport communications, located on the ore pillar. This reduces the intensity of mining and increased time for completion of the remaining ore reserves. In addition, the placement of ore pillar outside repaid pit (in the Central part of the career fields) dramatically narrows the scope of the formation of the front for the development of mining, and the development of two contiguous ore bodies with different quality mineral the location of ore pillar hinders involvement in the primary ore with a higher mineral content, which reduces the production output. The result of the above factors affect economic performance and reduce the production efficiency of surface mining. Given the short period of standing terraces in its extreme position on the stages of refinement, the disadvantages of this method include the development of safety berms in the bottom part on limiting the pit separating repaid dual, triple ledges. At the same time to ensure complete extraction of valuable ore requires an increase in the volume of Stripping when the spacing of the pit to accommodate these berms, which also significantly reduces the effectiveness mountain rampayoh the reduced volume of overburden.

This objective is achieved in that in the method of reconstruction career with two adjacent ore bodies, including the spacing of the pit at an intermediate stage of construction of the new boards that are generated internal ledges with parameters that are valid on their sustainability, and divided by a safety berm, formation of transport conventions and device divergent sites, at the stage of finalization accommodation transport communication part of the career fields in one of the ore bodies, the revision to the design depth, leaving the ore pillars, the phased development of tsepnogo Congress in the developed space before joining the Congress to limit the pit and Refine the ore pillars, in the interim triple ledges rebuild convex-polygonal profile, from turning the site form a ring transport conventions opposite direction, refining the ore pillars are in layers due to the repayment of transport congresses, built by ore body at stages of completion in places steep fall of the ore body Board build a career high ledges, and the ring transport conventions form a one-sheet with movement.

at each other.

When forming the convex-polygonal profile of a slope built-in ledge produce contouring of the top of the wells at an angle of 75drilled on the height of the double ledge.

When forming the convex-polygonal profile of a slope built-in ledge produce contouring of the bottom of the wells at an angle of 90drilled with the soles of the first horizon at the height of the double ledge.

The offset in the intermediate stage triple in the limiting position of the ledges convex-polygonal profile allows you to provide greater stability repaid ledges compared with ledges rectilinear profile due to the additional resistance to displacement of the prisms possible collapse. Geometrical parameters of the ledges convex-polygonal profile allow to reduce temporarily suspended in the pillar of ore with a substantial reduction in the volume of Stripping for separation Board. For the formation of the convex-polygonal profile of a slope built-in ledge produce contouring of the top of the wells at an angle of 75drilled on the height of the double ledge, and the contouring of the bottom of the wells polarisavenue ring transport congresses opposite direction from turning the site allows you to organize plank movement of technological and transport to ensure complete extraction of minerals without additional Stripping volume when the spacing of the pit, necessary to accommodate a wide two-way transport of Congress.

Refining the ore pillars by the layer-maturity transport congresses, formed on one of the ore bodies with arranging the movement of technological transport tsepnomu Congress, located in mined-out space of another ore body, provides full notch high-value ore project in the pit with a maximum reduction of overburden.

At the stage of completion career development ore in places steep fall of the ore bodies is produced by contact of the ore body with the enclosing rocks offset ultra-high ledges. Given the short period of standing of these ledges in the limiting position, the artificial strengthening and further their prigruzku produce tsepnym Congress, it provides a high level of safety of mining operations on the stages of completion career, and testing of the ore by contact completely eliminates the loss of high quality ore in the bottom of the pit.

The formation tsepnogo transport of Congress under the direction of the filling from two sides towards each other allows to reduce the time of execution of these works, and by reducing the time of completion ostavshie career.

The method is illustrated in Fig.1, 2.

In Fig.1 shows the plan of mining operations at the stage of completion career to the design of the bottom.

In Fig.2 shows the plan of mining operations at the end of the completion of the ore pillars, where the 1 - ring transport Congress, 2 ore pillar, 3 - West ore body, 4 - East ore body, 5 - osypnoi transport Congress.

An example of a specific implementation.

Field Tr. "Good" is represented by two steeply dipping individual ore bodies 3 and 4, the articulated at its upper part 3 Western and Eastern 4. The quarry development is made by the steps in depth. The initial field development project Tr. "Good" provided the boundary surface mining to a depth of 400 meters Then, in order to engage in the exploitation of deep aquifers, was completed with the reconstruction project, in which the depth of the pit is estimated to be equal to 600 m (abs. mark the bottom of the quarry -290 m).

In the process of working out the rock mass in the contours of the initial stages of field development on the depth of the pit edges "Good" formed by the ledges angle slopes 60-75separated safety berms required width, and transport congresses track of spiral shape with rastvorenie of industrial vehicles. Preparation of rock to excavation is carried out drilling and blasting method, then blasted rock mass ship excavators in dump trucks and transported to the beneficiation plant and the external dumps.

The beginning of works on reconstruction of a career dedicated to the intermediate circuit. The maximum depth of the pit at this point is 490 meters reconstruction career begins with the formation of mountains. -80 m turning the site and the detuning of the safety berm clearing width, providing its mechanized cleaning. Form the convex-polygonal profile outside of the 45-meter, built-in on the target contour, the slope of the escarpment. The upper part of the ledge height of 30 meters is being built at an angle 75the lower part of the height of 15 m vertically at an angle of 90, the resulting angle of the slope of the ledge 79.

From turning the site form a ring transport conventions 1 the opposite direction and increased to 100% longitudinal slope before turning the site, located on the opposite side of the pit. The width of these meetings should provide a one-way single-lane traffic red circle transport congresses 1 allows to achieve complete extraction of minerals without additional volume of overburden in the spacing section of the pit to accommodate a wide two-lane transport Congress. During the formation of circular transport congresses 1 not more than every 600 m of the track are arranged horizontal platform of easing the angle of inclination of the track. Development continues offset under the transport congresses shoulders with the slope of the convex-polygonal profile, divided by a safety berms required width.

The development of the next phase begins with the formation of mountains. -170 m turning the site and the detuning of the safety berm clearing width, providing its mechanized cleaning, with the formation of the convex-polygonal profile of the slope outside of the 45-meter ledge. Then form a spiral transport Congress width, providing two-way movement of industrial vehicles. When this exit is formed in part of the career fields in one of the ore body East ore body 4. Mining lead ore drilling and blasting method according to one of the ore body East 4 - separation tests of the ore pillars 2 and other Western 3 fully on the project depth to the final bottom of the quarry. In places, the steep fall of the Western ore body 3 (the Northern and southern parts of the Board) testing of the ore is carried out by contact of the ore body with the enclosing rocks is nomu strengthening wire-mesh veil.

At the stage of completion tests pillars of the East ore body 4 primarily in the developed space Western ore body 3 form a transport exit 5 in abs. OTM. -170 m-290 m, usipa waste rock from turning the site on the mountains. -170 M. landfilling transport Congress 5 are performed in stages. Originally abs. OTM. -170 m-245 m before the junction to the exit, located on the upper circuit Board career. Then layer-by-layer development pillar 2 of the Eastern ore body 4 due to the repayment of transport Congress in abs. OTM. -170 m-230 m Movement technological and auxiliary transport is carried out by tsepnomu the exit 5. Ore reserves were repulsed by the outline of the ore body offset ultra-high ledges (up to 150 m) with drilling and blasting operations. Then continue work on the landfilling transport exit 5 on the South-Eastern edge of the quarry in the abs. OTM. -260 m-290 m Upon completion of the filling of the transport exit 5 is the maturity of the ore Congress on the Northern Board career in abs. OTM. -290 m-275 m

The application of the proposed method chimney reconstruction is at low volumes Stripping.

Claims

1. The method of reconstruction career with two adjacent ore bodies, including the spacing of the pit at an intermediate stage of construction of the new boards that are generated internal ledges with parameters that are valid on their sustainability, and divided by a safety berm, formation of transport conventions and device divergent sites, at the stage of finalization accommodation transport communication part of the career fields in one of the ore bodies, the revision to the design depth, leaving the ore pillars, the phased development of tsepnogo Congress in the developed space before joining the Congress to limit the pit and Refine the ore pillars, characterized in that that in the interim triple ledges rebuild convex-polygonal profile, from turning the site form a ring transport conventions opposite direction, refining the ore pillars are in layers due to the repayment of transport congresses, built by ore body at stages of completion in places steep fall of the ore body Board build a career high ledges.

2. The method according to p. 1, characterized in that the annular transportno transport exit direction of the filling is carried out from two sides towards each other.

4. The method according to p. 1, characterized in that for forming the convex-polygonal profile of a slope built-in ledge produce contouring of the top of the wells at an angle of 75, drilled to a dual height of the ledge.

5. The method according to p. 1, characterized in that for forming the convex-polygonal profile of a slope built-in ledge produce contouring of the bottom of the wells at a 90 angle, drilled with the soles of the first horizon at the height of the double ledge.

 

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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

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