Direct mining method

FIELD: mining.

SUBSTANCE: method comprises an extraction of overburden rocks by longitudinal stripping cuts with placement on their bottom of a free strip, handling of overburdens from working face of the longitudinal stripping cut and their storage in an internal dump. The extraction of overburdens by longitudinal stripping cuts with placement on their bottom of a free strip, handling of overburdens from working face of the longitudinal stripping cut and their storage in an internal dump at the edge of these stripping cuts are performed within the extraction block. Meanwhile along the bottom edge of the internal dump of the extraction block an additional free strip is placed, which is used for storage of overburdens, with forming of internal dump.

EFFECT: improvement of performance of direct mining method at the expense of increase of productivity by minimising of length and time of idle running of the stripping equipment.

11 dwg

 

The invention relates to the mining industry and can be used for open development of mineral deposits on bestransportnye system in difficult mining and geological conditions.

The invention relates to the priority direction of development of science and technology "Technology is environmentally safe mining and mining" [Alphabetical subject index to the International patent classification in priority directions of development of science and technology / Y. G. Smirnov, E. C. Skidanov, S. A. Krasnov. - M.: PATENT, 2008. - S. 110].

Open development of mineral deposits using bestransportnye method is as follows.

There is a method of mining according complicated bestransportnye scheme with the use of a dragline. (Rzhevsky Century Century Open pit mining. Part 2. Technology and complex mechanization. - M.: Nedra, 1985. page 227, Fig.6.20, b). This method involves the excavation of overburden longitudinal Stripping the benches, placing at the bottom of the completed longitudinal Stripping Zachodni free strip, moving and storage of overburden into the internal dump.

Common features known way bestransportnye the development of mineral deposits, fossil is with the use of a dragline with the inventive method are:

- excavation of overburden longitudinal Stripping the benches;

- accommodation at the bottom of the completed longitudinal Stripping the free section of the strip;

- moving and storage overburden into the internal dump.

The disadvantages of this method bestransportnye development of mineral deposits using dragline claimed are:

- significant amounts of preexcavation overburden, which reduce the amount of preparation of material wealth and, as a consequence, the productivity of the pit, as well as increase the cost of production, dust, ambient air and reduce the environmental friendliness;

- the presence of idle strokes of the dragline at the front on one side of the longitudinal Stripping zagadki to another reduces the time of operation of the dragline to move overburden and, consequently, its performance, and also increase the costs associated with the transfer of the dragline, and its deterioration;

- the presence of idle strokes dragline deteriorates the condition of the soil surface highway driving, which reduces environmental friendliness;

For the prototype accepted method of mining for simple bestransportnye scheme. (Rzhevsky Century Century Open pit mining. Part 2. Technology and complex mechanization. - M.: Nedra, 1985. page 223, Fig.6.16 b). The known method includes the excavation of overburden longitudinal Stripping the benches, moving and storage overburden into the internal dump, placing at the bottom of the completed longitudinal Stripping benches free strip.

Common symptoms are known bestransportnye system development with the use of a dragline with the claimed invention are:

- excavation of overburden longitudinal Stripping the benches;

- move the overburden, and storing them in the internal dump;

- accommodation at the bottom of the completed Stripping Zachodni free strip.

The disadvantage of this method is the availability of idle strokes of the dragline at the front on one side of the longitudinal Stripping zagadki to another. This reduces the time of operation of the dragline to move overburden and, consequently, its performance, but also increases the costs associated with idle strokes of the dragline, and wear. In addition, the transfer of the dragline leads to deterioration of the soil surface highway driving, which reduces the environmental friendliness.

The need for idle strokes of the dragline is explained by the following.

When developing longitudinal Stripping Zachodni at the bottom of the operating trench placed two empty lanes. A free strip - this is the bottom of the waste longitudinal Stripping zagadki, exempt from vskryshej rocks and a layer of mineral width equal to not less than the width of the Stripping zagadki. Lane is the first band is adjacent to the working longitudinal Stripping the section and bend the overburden mined longitudinal Stripping zagadki. This first band is in front of the face to be mined longitudinal Stripping zagadki and decreases along its length. The second strip is formed after podvigina mining front fulfilled longitudinal Stripping zagadki.

Mining front of minerals consists of blocks, which perform the following stages of work: excavation of overburden, the creation of a reserve of trained and ready to mining stocks, mining of minerals and soil preparation formation of minerals for storage of overburden. After the excavation of overburden in the last block longitudinal Stripping zagadki on the flank of this longitudinal Stripping Zachodni prepared stocks of fossil. These reserves are represented by layer, which is placed in the section, is exempt from overburden and which is adjacent to the first excavation unit longitudinal Stripping Zachodni, which runs in the opposite direction to the testing of the previous Zachodni without idling the dragline. Released strip out space for placement of overburden this first extraction unit is missing too busy posted on her overburden recent excavation block passed adjacent longitudinal Stripping zagadki.

For host rocks sun is Shi first excavation unit on the ground layer adjacent Zachodni necessary to the soil layer was released from fossil. For testing the prepared mineral reserves, reserve prepared and ready to mining stocks, and stocks of the mining block on the front of overburden and mining operations require considerable time, during which the dragline will be idle. To eliminate this downtime dragline idle is moved to the opposite flank passed longitudinal Stripping Zachodni for testing another longitudinal Stripping zagadki. Approximate length of idling is 1÷3 km Duration idling, during which the dragline does not Stripping, significant and included in the calculation of the annual performance of dragline (Open pit mining. The Handbook. Edited by Trubetskoy K. N., Potapova, M. G., Vinnitsa, K. E. and others - M.: Mining Bureau, 1994. page 425, 426).

The reason for the disadvantage is the lack of technical solutions aimed at reducing the duration of the idle strokes of the dragline.

Thus, the solution bestransportnye development of mineral deposits is to increase the efficiency of the method.

The claimed invention is directed to a solution to increase the efficiency of the method bestransportnye field development on the serious resources.

The technical result of the invention is to improve the efficiency of the method bestransportnye development of mineral deposits by providing the possibility of changing the direction of Stripping without idling Stripping equipment, and by reducing the length and duration of the idle moves Stripping equipment and by improving environmental performance by reducing airborne dust, reduce destruction of the soil, reducing contamination of the environment with toxic gases and lubricants.

The technical result of the claimed invention is achieved in that in the method bestransportnye field development, including excavation of overburden longitudinal Stripping the benches with the placement of their day free strip, moving overburden from the bottom longitudinal Stripping zagadki and their storage into the internal dump, according to the invention the recess overburden longitudinal Stripping the benches with the placement of their day free strip, moving overburden from the bottom longitudinal Stripping zagadki and their storage into the internal dump on the flank of these benches are within the excavation area, while along the bottom edge of the inner blade excavation of the site to post free strip to which the second stockpiling of rock overburden, forming an internal blade.

Differences from prototype to prove the novelty of the proposed method.

The aggregate of the stated characteristics are provided by the achievement of the technical result, so the signs are significant. Each of the essential features aimed at the achievement of a technical result that can be seen from the following.

The formation on the flanks of the longitudinal overburden benches excavation sites creates the conditions for changing the direction of movement of the Stripping equipment on the opposite without idling in the conduct of Stripping in another longitudinal Stripping the section.

Additional free strip placed along the bottom edge of the inner blade, creating more space to fit in a single cross-section of the three benches - Stripping, mining and zagadki for internal dump. The result is the formation of a platform for independent work Stripping and mining equipment, as well as for internal dumping. You can change the direction of work Stripping equipment without idling, which also contributes to the achievement of a technical result. Rock overburden stockpiling on free strip forming the inner blade. Set out the reception has free strip excavation of the site for schlader is of overburden subsequent longitudinal Stripping Zachodni excavation of the site. This increases the area for changing the direction of the stroke of overburden and mining equipment on the opposite, which also contributes to the achievement of a technical result.

The method is carried out using the Stripping unit RF patent for the invention №2396394, CL E02F 3/54, E21C 47/00. Publ. 10.08.2010. Bull. No. 22.

Stripping unit consists of Stripping the chassis rotary platform, a mast and a pile driving position platform to the mast. Masts are interconnected by a system of ropes with which moves two-sided bucket with the bottom of the V-shape 1 shape. Stripping driving rotary platform mounted on Stripping the ledge, and moldboard running non-platform - on the blade. Double-sided bucket with the bottom of the V-shape 1 shape draws overburden Stripping ledge is moved by a system of ropes to pile driving rotary platform and is discharged into the internal dump.

The invention is illustrated by drawings, which are shown in Fig.1-11.

In Fig.1 shows the complex opening and development workings that must pass before Stripping and mining operations by the present method bestransportnye development (plan).

In Fig.2 shows a diagram of the notches of the first longitudinal Stripping Zachodni Stripping unit with displacement is the group of overburden and their storage into the internal dump, placed in the split trench. The direction of movement of the Stripping units from the entrance of the trench to exit the trench (the plan).

In Fig.3 - scheme of the notches of the first longitudinal Stripping Zachodni Stripping unit with movement of overburden and their storage into the internal dump placed in the split trench. The direction of movement of the Stripping units from the entrance of the trench to exit the trench (cross section).

In Fig.4 - scheme of the notches of the second longitudinal Stripping Zachodni Stripping unit within the length of the excavation the excavation site of the first block adjacent to exit the trench, moving overburden inner blade placed in the split trench. The direction of movement of the Stripping units from the exit to the entrance of the trench the trench (the plan).

In Fig.5 - scheme of the notches of the second longitudinal Stripping Zachodni Stripping unit within the length of the excavation the excavation site of the first block adjacent to exit the trench, moving overburden and their storage into the internal dump placed in the split trench. The direction of movement of the Stripping units from the exit to the entrance of the trench the trench (cross section).

In Fig.6 - scheme of the notches of the second longitudinal Stripping Zachodni Stripping unit with movement of overburden and their storage in the inside of the deposits of the blade, placed in the first longitudinal Stripping the section. The direction of movement of the Stripping units from the exit to the entrance of the trench the trench (the plan).

In Fig.7 diagram of the notches of the second longitudinal Stripping Zachodni Stripping unit with movement of overburden and stockpiling of the inner blade, placed in the first longitudinal Stripping the section. The direction of movement of the Stripping units from the exit to the entrance of the trench the trench (cross section).

In Fig.8 is a diagram of the notches of the second longitudinal Stripping Zachodni Stripping unit within the length of the excavation of the site of the last excavation block adjacent to the entrance of the trench, with the movement of overburden and their storage into the internal dump placed in the split trench. The direction of movement of the Stripping units from the exit to the entrance of the trench the trench (the plan).

In Fig.9 is a diagram of the notches of the second longitudinal Stripping Zachodni Stripping unit within the length of the excavation of the site of the last excavation block adjacent to the entrance of the trench, with the movement of overburden and their storage into the internal dump placed in the split trench. The direction of movement of the Stripping units from the exit to the entrance of the trench the trench (cross section).

In Fig.10 is a diagram of the extraction of the third longitudinal Stripping Zachodni Stripping AGR is gatom within the length of the excavation of the site of the first extraction unit, adjacent to the entrance of the trench, with the movement of the overburden into the inner blade, placed in the first longitudinal Stripping the section. The direction of movement of the Stripping units from the entrance of the trench to exit the trench (the plan).

In Fig.11 is a diagram of the extraction of the third longitudinal Stripping Zachodni Stripping unit within the length of the excavation the excavation site of the first block adjacent to the entrance of the trench, with the movement of the overburden into the inner blade, placed in the first longitudinal Stripping the section. The direction of movement of the Stripping units from the entrance of the trench to exit the trench (cross section).

Position method development bestransportnye system is indicated by the following figures:

1 - entry trench;

2 - split the trench;

3 - exit the trench;

4 - the first longitudinal Stripping the section;

5 - overburden running non-platform Stripping Assembly;

6 - pole Stripping running non-platform Stripping Assembly;

7 - moldboard running non-platform Stripping Assembly;

8 - mast moldboard running non-platform Stripping Assembly;

9 is a system of ropes Stripping Assembly;

10 double - sided bucket with the bottom of the V-shaped Stripping Assembly;

11 - second longitudinal Stripping the section;

12 - third prodoljayuscheisya the section;

13 - working Board career;

14 - outside the wall of the open pit;

15 - layer mineral;

Fig.1, 2, 4, 6, 8, 10 the dotted lines show the contours of the exhaust or provided to the hollow longitudinal Stripping benches (in the plan). Fig.2, 4, 6, 8, 10 the arrows show the direction of the stroke of the Stripping unit when the first recess 4, the second 11 and third 12 longitudinal Stripping benches.

The way bestransportnye development operates as follows.

The original position before starting work on bestransportnye development are completed entry 1, split 2 and field 3 of the trench, and the first extraction unit first longitudinal Stripping Zachodni 4 on the flank the entrance of the trench 1 and the last excavation unit first longitudinal Stripping Zachodni 4 on the flank of the field trench 3 (Fig.1). These production carried out using known methods, for example, using road transport.

The first longitudinal Stripping section 4 is removed in the direction from the entrance of the trench 1 to exit the trench 3. Rock overburden the first longitudinal Stripping Zachodni 4 is placed in the inner blade of a cutting trench 2 (Fig.2, 3). For this Stripping driving position platform 5 Stripping unit installed on the desktop Board 13 career and otvalnuyu running non-platform 7 Strychnos the unit installed on the outside of the wall of the open pit 14. Blasted rock overburden bench working pit 13 draw double-sided bucket 10 with a bottom V-shaped form, move and store in the inner blade of a cutting trench 2. Stripping 5 and moldboard 7 running non platforms move in the direction from the entrance of the trench 1 to exit the trench 3. When drilling the first longitudinal Stripping Zachodni 4 outside the excavation area adjacent to the entrance trench 1, after the release of this Zachodni from overburden and fossil formed free strip. This free band post rock overburden subsequent longitudinal Stripping zagadki.

After sinking the first longitudinal Stripping Zachodni 4 on the flank of the field trench 3 form a working site, which includes a first extraction unit, a second longitudinal Stripping Zachodni 11, adjacent to exit the trench 3, the last excavation unit first longitudinal Stripping Zachodni 4, adjacent to exit the trench 3, and the last excavation block cutting trench 2, adjacent to exit the trench 3 (Fig.4, 5).

The length of these blocks are equal to each other. Along the length of the excavation area at the bottom of the first longitudinal Stripping Zachodni 4 along its width to form a free lane, and at the bottom of the cutting trench 2 along its width to form additional free lane. Free on the wasp and additional free strip are designed to be stored on them rocks of the inner blade. All available lanes are cleaned from fossil.

The length of the excavation block LBVdetermined by the formula

Lbin=linwith aKp+lpeC+ldaboutb+lCandh(1)

where LBV- the length of the excavation block;

lsun- the length of the Stripping unit;

lrez- the length of the backup unit training and ready to cut stock;

lEXT- the length of the mining block;

lthe why- block length Stripping of soil formation and preparation for storage of overburden.

The length of the excavation area LHCtake equal to the length of the excavation block LBV, the length of the free strip LSPand the length of additional free strip Lparticleboard:

Lyin=Lbin=Lwith ap=Ldwith ap(2)

Shire is well excavation area B HCdetermined by the formula

Byin=Binwith aKp+Bwith ap+Bdwith ap,(3)

where BHC- the width of the excavation area;

Bsun- the width of the Stripping unit;

BSP- the width of the free strips;

Bparticleboard- the width of the free fringe.

The direction of doing the Stripping and mining operations are changed to the opposite. Stripping 5 and moldboard 7 running rotary platform is moved in the direction away from the trench 3 to the entrance trench 1. Mining excavator is embarking on the development of reservoir minerals 15 away from the trench 3 to the entrance trench 1. The second longitudinal Stripping section 11 is removed in the direction away from the trench 3 to the entrance trench 1. Rock overburden second longitudinal Stripping Zachodni 11 is placed in the inner blade of a cutting trench 2, which occiput on free strip this trench. Free strip located at the bottom of the first longitudinal Stripping Zachodni 14 is free strip through which move the overburden and the bottom of the second longitudinal Stripping Zachodni 11 in the inner blade of a cutting trench 2, posted on free strip. For this Stripping driving position platform 5 Stripping unit installed on the desktop Board 13 career and otvalnuyu running toggling the platform 7 of the Stripping unit is installed on the outside of the wall of the open pit 14. Blasted rock overburden bench working pit 13 draw double-sided bucket 10 with a bottom V-shaped form, move and store in the inner blade of a cutting trench 2. The parameters of the mining area determined by the formula(1), (2), (3).

When drilling the second longitudinal Stripping Zachodni 11 outside the excavation area adjacent to exit the trench 3 is formed only free strip, and additional free band is absent, as in its place occiput internal dump overburden (the bottom of the first longitudinal Stripping Zachodni 4). The technology of the second longitudinal Zachodni 11 shown in Fig.6, 7. Stripping 5 and moldboard 7 running non-platform Stripping unit perform a working stroke and moved in the direction away from the trench 3 to the entrance trench 1.

After sinking the second longitudinal Stripping Zachodni 11 to the boundary of the excavation area on the flank of the entrance of the trench 1 form a working site on the flank of the entrance of the trench 1, which includes the latest excavation unit second prodol the Oh Stripping Zachodni 11, adjacent to the entrance trench 1, the first extraction unit first longitudinal Stripping Zachodni 4, adjacent to the entrance trench 1, and the first extraction unit cutting trench 2, adjacent to the entrance trench 1 (Fig.8, 9). The second longitudinal Stripping section 11 is removed in the direction away from the trench 3 to the entrance trench 1. Rock overburden second longitudinal Stripping Zachodni 11 is placed in the inner blade of a cutting trench 2, which occiput on free strip this trench. Free strip located at the bottom of the first excavation unit first longitudinal Stripping Zachodni 4 is free strip through which move overburden from the bottom of the second longitudinal Stripping Zachodni 11 in the inner blade of a cutting trench 2, is hosted on the free lane. For this Stripping driving position platform 5 Stripping unit installed on the desktop Board 13 career and otvalnuyu running toggling the platform 7 of the Stripping unit is installed on the outside of the wall of the open pit 14. Blasted rock overburden bench working pit 13 draw double-sided bucket 10 with a bottom V-shaped form, move and store in the inner blade of a cutting trench 2. Stripping 5 and moldboard 7 running rotary platform is moved in the direction away from the ransei 3 to the entrance trench 1. The parameters of the mining area determined by the formula(1), (2), (3).

After the formation of the excavation area on the flank of the second longitudinal Stripping Zachodni 11 within the last excavation block adjacent to the entrance trench 1, proceed to the formation of the excavation area on the flank of the third longitudinal Stripping Zachodni 12 within the first excavation block adjacent to the entrance trench 1 (Fig.10, 11). Excavation area includes a first extraction unit of the third longitudinal Stripping Zachodni 12, the last excavation section of the second longitudinal Stripping Zachodni 11 and the first extraction unit first longitudinal Stripping Zachodni 4. Rock overburden third longitudinal Stripping Zachodni 12 is placed in the inner blade of the first longitudinal Stripping Zachodni 4, which occiput on free strip this zagadki. Free strip located at the bottom of the last excavation unit second longitudinal Stripping Zachodni 11, is free strip through which move overburden from the bottom of the third longitudinal Stripping Zachodni 12 in the inner blade of the first longitudinal Stripping Zachodni 4, is hosted on the free lane. The direction of doing the Stripping and mining operations are changed to the opposite. Stripping 5 and moldboard 7 running non platforms move in the direction the AI from the entrance of the trench 1 to exit the trench 3. For this Stripping driving position platform 5 Stripping unit installed on the desktop Board 13 career and otvalnuyu running toggling the platform 7 of the Stripping unit is installed on the outside of the wall of the open pit 14. Blasted rock overburden bench working pit 13 draw double-sided bucket with the bottom of the V-shaped form, move and store in the inner blade of the first longitudinal Stripping Zachodni 4. Mining excavator is embarking on the development of reservoir minerals 15 from the entrance of the trench 1 to exit the trench 3. The parameters of the mining area determined by the formula(1), (2), (3).

As a result, the first longitudinal section 4 is removed in the direction from the entrance of the trench 1 to exit the trench 3, the second longitudinal Stripping the section 11 is pulled out in the direction away from the trench 3 to the entrance trench 1, and the third longitudinal Stripping the section 12 is removed in the direction from the entrance of the trench 1 to exit the trench 3 without idle moves Stripping equipment. Subsequent longitudinal Stripping Zachodni removed is similar to that presented extraction technologies first longitudinal Stripping Zachodni 4, the second 11 and third 12 longitudinal Stripping benches. In the end, each longitudinal Stripping the section removed without idling Stripping equipment.

Thus, the proposed method bextra the downtown development can improve its efficiency by increasing productivity Stripping equipment by reducing the duration of the idle passages, and to increase sustainability, reduce wear Stripping equipment and the cost of idle passages.

Inventive step of the proposed method bestransportnye development is administered by Stripping on the flanks of the longitudinal overburden benches excavation areas of increased width. This is achieved by placing additional free strip with dumping on her inner blade when moving overburden through the free lane. In the process of conducting each longitudinal Stripping Zachodni liquidated idling Stripping equipment throughout the length of this Zachodni, which is in the range from 1 to 3 km. the result is a significant technical result aimed at substantially reducing the idle moves Stripping equipment, increase its productivity, improve environmental performance, reduce wear and tear of the equipment and the cost of Stripping.

The prior art known to the jurisdiction Stripping on bestransportnye system excavation units within the same longitudinal Stripping Zachodni with promotion as doing all the work. In the present method, in contrast to the known characteristic of which is that the work carried out within the excavation area, consisting of the three longitudinal Stripping benches (three excavation units), that allows you to change the direction of doing Stripping without idling Stripping equipment, that is, to achieve a new technical result. Therefore, the claimed method meets the condition of patentability "inventive step".

The way bestransportnye development of mineral deposits, including the excavation of overburden longitudinal Stripping the benches with the placement of their day free strip, moving overburden from the bottom longitudinal Stripping zagadki and their storage into the internal dump, characterized in that the recess overburden longitudinal Stripping the benches with the placement of their day free strip, moving overburden from the bottom longitudinal Stripping zagadki and their storage into the internal dump on the flank of these benches are within the excavation area, while along the bottom edge of the inner blade excavation area locate additional free lane on which the stockpiling of rock overburden, forming an internal blade.



 

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2 cl, 2 dwg

FIELD: mining.

SUBSTANCE: method in which the quarry along the length is divided by the lines, of which the first is worked out to a target depth with an external spoil disposal and working out of the subsequent ones is carried out using an internal spoil disposal, placing the overburden in the mined-out space of the adjacent line with the common formation of the dump tiers with the development of mining work. And simultaneously with the start of mining operations in the quarry of the first stage within the quarry of the second stage along the deposits the front quarry is built with angles of the slopes of sides close to the angles of reclamation, the cross-overs are located in it for providing cargo communication of the upper working horizons of the quarry of the first stage with the surface, with the reduction of mining operations in the quarry of the first stage on its longitudinal side the loop cross-overs are made adjacent to the bottom of the quarry in the area of the end side, which is formed with a slope towards the temporary side, marking the limit of the quarries of first and second stage, when achievement in the mining operations in the quarry of the first stage of the current depth. The separation of the sides of the front quarry is carried out, turning them into working, and after complete working out the reserves of the quarry of the first stage the working out the reserves of the quarry of the second stage is carried out, while linking its main openings to the main openings of quarry of the first stage in the locations of the loops, the inner dump in the worked-out area of quarry of the first stage is formed as inclined and horizontal tiers, at first directly with the surface from the side not occupied with main openings, the inclined tier is made with bulldozers with width of the platform on top equal to zero, and then using a draglines it is extended by the amount of boom extension, after this the horizontal tiers are dumped in series from the bottom up from the loop cross-overs with the high ensuring their sustainability, to complete formation of the inner dump.

EFFECT: decrease in the distance of inner transportation of overburden from the working area to the inner dump.

8 dwg

FIELD: mining.

SUBSTANCE: method comprises formation of the working area, technology of mining overburden benches and providing cargo communication of the working horizons to the surface, the overburden benches of the working area are taken of the increased height (25-30 m), based on the condition of their mining using excavators with extended working equipment, the benches are combined into groups of three in each. At that for the upper and lower benches in the groups the minimum working areas are provided with dimensions equal to the width of the transport platforms, providing two-way traffic of technology vehicles and its manoeuvring, for the middle benches the width of the platforms is taken equal to the sum of the width of minimum working area and the width of the recess stope with ready-to-dig volumes of overburden, providing the necessary speed of reduction of mining operations in each group of overburden benches of the working area during the formation of the breakdown of the blasted rock mass based on conditions of placing it on the middle and lower benches. And the breakdown of the rock remaining on the middle benches, is divided into two layers, the upper of which are worked out with excavators with top loading into vehicles that are on the platforms of upper benches, the volumes of the lower layers and volumes of the overburden dumped with explosion on the lower benches are worked out with individual excavators with loading to vehicles at the same level with them. After working out the ready for excavation volumes of overburden in all groups of benches and formation of the corresponding volumes on the adjacent underlying benches and displacement of the boundary of the groups occurring at that down by one bench, their working out is repeated in the above procedure, opening the overburden benches of the working area of is carried out using steep sliding cross-overs with the longitudinal slope of 12-15° and width, providing placement of the breakdown of the blasted rock mass during their extension and at the same time the through passage of the technological transport, the extension of steep cross-overs is carried out using track and wheel loaders by dividing the breakdown of the blasted rock mass to the horizontal and inclined layers with the height defined taking into account the trajectory of motion of the loader bucket.

EFFECT: reduction of current stripping ratio in the initial period of working out of the field.

3 dwg

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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