Method for direct development of working trench. RU patent 2520234.
 Drilling and blasting operations at open pits / 2517289Proposed method comprises drilling of parallel rows of wells, charging them with explosives and their short-delay blasting. This short-delay blasting of radially arranged charges in membrane layers is performed as follows. First row of wells is blasted, the third one from the bench edge. Then, 1 row of wells is blasted with 25 ms delay while 2 rows of wells are last blasted with 50 ms delay. To locate the membrane layers, rock mass is photographed to define the radius of curvature of bench mining block slope by relationship with due allowance for acoustic stiffness of rocks. Weighted average layer-by-layer quantity of systematic fractures per the width of mining block coverage Wc is defined. Weighted average spacing between two adjacent systematic fractures is defined. Degree of crushing and line of resistance at bench bottom are defined. Sums of rock bed depths and strength factor (by Protodyakonov scale) are calculated. Rock strain rate, clamp factor, explosive potential energy and blast efficiency are defined. |
 Method of open pit mining with help of wheel-type miners, self-propelled hoppers and dump trucks / 2517262Rock loosened by wheel-type miner is dumped by miner discharge arm belt conveyor onto that of self-propelled two-section hopper turn bar. Then, it is dumped into hopper sections rock from under which, with no outage of hopper and miner displacing in synchronism and in parallel, it is dumped cyclically into dump-trucks. Said dump-trucks move along with said hopper at loading. |
 Method to extract non-commercial reserves in development of coal beds / 2514252Invention relates to mining industry, in particular, to development of slope beds of coal deposits by open mining works. The method includes development of a series of slope flat-dipping beds by open mining works comprising a coal bed with non-commercial reserves. This bed may be in a bench at its any height. Mining of overburden rocks is carried out by horizontal layers after blast-hole drilling carried out with the purpose to loosen the rock massif for the entire height of the bench, including a coal bed with non-commercial reserves. The rock of the beds without admixture of coal is loaded right into dumper trucks, and the layer containing the bed coal with non-commercial reserves, is sent via the device for separation of rock pieces from fine coal and loaded into different dump trucks. The upper and lower borders of the layer containing the bed coal with non-commercial reserves are set, when the mixture of the rock and coal reaches the ratio of 85-90% rock and 10-15% coal. |
 Method to prepare for dressing of difficult coals / 2514248Method includes treatment of coal extracted from coal deposits for opening of its splices with rock. At the same time the coal is placed in layers at the intermediate storage, arranged on the southern slope of a knoll (mountain, hill) or a pit heap, the site of which has an angle of inclination 10-25°, exposed in spring-autumn periods to solar radiation with the number of "thawing-freezing" cycles with transition of temperature via 0°C equal to at least 7. Besides, the thickness of the coal layers is taken on the basis of the calculation sufficient for daily heating-cooling, and after thermal processing the coal is shipped from the warehouse for subsequent demineralisation. |
 Open mining method for mineral deposits / 2513464Invention relates to mining, more precisely to open mining of high deposits with use of continuous operation technique. The method includes cutting of a permanent trench, construction of a working trench, installation of transportation lines, bench cutting of mineral resources by continuous extraction and haulage system with a fan-shaped area of operations. When operations are performed in the fan-shaped manner a solid bed located outside the fan-shaped border is developed simultaneously; mineral deposits are shipped to transportation lines and at first the area of a V-shaped cut is determined at the fan-shaped area of operations in compliance with the following condition: S i ( sector ) = π ⋅ L w a 2 ⋅ α i 360 , where Lwa - length of working area, m; αi - angle of working area turn, degree; then the area of the V-shaped cut is determined with consideration of the solid bed in compliance with the following condition: S i = L w a 2 ⋅ t g ( ∑ i = 1 n α i ) 2 , where Lwa - length of working area, m; αi - angle of working area turn, degree; and for the purpose of simultaneous performance of the fan-shaped working area and the V-shaped cut in the solid bed its volume is determined in compliance with the following condition: V s = H ⋅ ( S i − S i − 1 − S i ( sec t o r ) ) , where H is an average thickness of mineral deposit, m; Si is the area of the V-shaped cut with consideration of the solid bed, m2; Si(sector) is the area of the V-shaped cut, m2. |
 Method for large-scale explosive destruction of mine rock masses of complex structure for selective extraction of mineral deposit at open-pit mining / 2511330Invention refers to mining industry, and namely to open-pit mining operations at development of ore and non-ore blocks of mineral deposits, the sections of which are sufficiently different as to mining-and-geological structure and quality of a valuable component, and namely to selective extraction of a mineral deposit by large-scale explosive destruction of mine rock masses of a complex structure. In rows of charges, which cross different-type mine rocks, well and group beam charges are located; group beam charges are located in sections requiring intense crushing. The latter are located in sections requiring intense crushing with direction of a convex beam surface towards intense crushing; row-by-row explosive breakage of single well and group beam charges is performed, thus performing row-by-row extension of nominal diameter of an explosion cavity. |
 Method of dumping at open mining of mineral deposits / 2509891Method involves extraction of overburden, its transportation to a dumping place and its unloading under dumping front slope. Unloading of overburden and its laying is performed in separate stock piles located parallel to each other, onto the internal slopes of which the smallest overburden rocks are unloaded, and paste-like tailings are dumped between them after benefication processing of ores; at laying of every next stock pile, stockpiling of tailings of benefication processing of ores is performed from the pre-formed stock pile, and distance between stock piles is determined as per a mathematical formula. |
 Method of dumping onto inclined base / 2507397Method involves dumping of an initial tier of dump rocks onto an inclined base with height H that is determined based on the following condition: H = 2 ⋅ V o ⋅ K K o ⋅ L o ⋅ ( 1 t g α + t g β ) , where VO - overburden rock volume, m3; K - coefficient of water content in paste-like tails after concentrating ore processing; KO - overburden ratio; Lo - dump length, m; α - natural angle of slope of overburden rock dump, degrees; β - surface slope, degrees, and between the inclined base and slope of the initial dump tier there stockpiled are paste-like tails after concentrating ore processing. |
 Open cut development method for steeply low stratified deposits / 2506425Invention pertains to mining and it can be used for development of steeply low stratified deposits, including eluvial and deluvial placers. The method includes stock penetration at independent levels, formation of working sites and extraction of minerals by mining equipment stepwise. At that formation of working sites is made from top downward; moreover steps are made by layer-by-layer extraction and horizontal shift of the mineral to the upper edge of the step and its subsequent throwing along the slope until a working site is formed thus providing safe operation of mining equipment and transport facilities. |
 Development method of water-bearing mineral deposits / 2504657According to the proposed method, an open-pit field is developed with a trench; the open pit is filled with water and an extraction device is installed in it; the open-pit field is developed in downward horizontal layers with water level control after development of layers. The water-filled open-pit field is divided into the following zones: working deposit zone prepared for development and developed deposit zone; in each of the above zones there installed are water-nonpermeable screens fenced from the common open-pit field. In addition, each zone is restricted with partition walls and water level is controlled, thus providing its increase in the working zone provided that Hl>Hw+ Hs.max, where: Hl - height of horizontal layer, m; Hw - height of water column, m; Hs.max - maximum scooping height, m; and under the condition of Hw > Hds.max, there provided is water level decrease in the working zone, where Hds.max - maximum scooping depth, m; and as the extraction device is being moved to a new working zone, installation of partition walls in the prepared zone and removal from the developed zone is performed. |
 Method for rock-blasting at open-pit mining / 2244252Large-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. |
 Method for open extraction of steep-falling deposits with internal dump-forming / 2246620Method 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. |
 Method for building non-working quarry edge / 2246621Method 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°. |
 Method for open extraction of mineral resources deposits / 2249697Method 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. |
 Method for open extraction of mineral resources deposits / 2249698Method 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. |
 Method for open extraction of sloping and steep-dipping deposits / 2253015Method 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. |
 Method for open extraction of bed-like deposits / 2254476Method 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. |
 Method for slanting of high benches on outline of open pit / 2255304The 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. |
 Method for open extraction of mineral resource deposits / 2256075Method 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. |
 Method for open extraction of mineral resources deposits / 2256795Method 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. |
FIELD: mining.
SUBSTANCE: method involves stripping operations performed by longitudinal stripping cuts along the direct system with laying of overburden rock into external dump arranged on upper platform of a non-working open-pit side, at stock-piling of overburden rock to external dump in tiers that are formed along dumping front. Dumping front is arranged at a right angle to an upper edge of a non-working side of the open pit and aligned with movement direction of overburden rock from the working face of longitudinal stripping cut to their dumping place.
EFFECT: reducing overburden rock re-excavation volumes.
5 dwg
The claimed invention relates to a mining industry and may be used for open development of mineral deposits on bestransportnye system in complex mining-geological conditions.
The claimed invention relates to priority directions of development of science and technology "Technology of ecologically safe development of deposits and mining operations", as it solves one of the problems connected with the mechanization and ecological safety of surface mining [Alphabetical subject index to the International patent classification in priority directions of development of science and technology / Ugino, Eviscerate, Sagrekow. - M: PATENT, 2008. - s].
The problem of increasing the efficiency of the method bestransportnye sinking cutting trench is the following.
There is a method of drilling cutting trench by author's certificate of the USSR №912932, AS 41/00, published 15.03.1982. Bulletin №10. The known method involves cutting trench excavation by draglines with the laying of overburden on the outside of the Board career. The method provides for advanced cutting trenches with a tilt toward the array bottom, filled rock overburden learned while conducting cutting trench.
Common features of a known method of penetration cutting trench with the claimed invention are:
- conducting cutting trench longitudinal Stripping the benches, representing ahead of the cutting and cutting trench;
- storage overburden on the outside of the Board career.
The disadvantages of this method of drilling cutting trench are:
- increased volume of Stripping works by creating tilt advanced bottom of the trench to the side of the array;
- increased losses minerals, left under the blade overburden advanced cutting trenches generated from the extracted rock overburden when conducting cutting trench;
- reduction of mined result in a significant reduction in the length of the mining front due to the significant decrease in the distance between draglines;
- reduction of mined as a result of downtime dragline due dependent from each other in their work.
For the prototype accepted methods of tunneling cutting trench with pereekskavatsii overburden the draglines [Rzhevsky V.V. Open pit mining. Part 2. Technology and complex mechanization. M, The subsoil. 1985, str, RIS], as the closest to the technical nature and functions performed. Split the trench is passed longitudinal Stripping the benches with pereekskavatsii and storage overburden to external dumps, placed on the upper landing outside Board career tiers. Rock overburden occiput to external dumps by draglines edge, which is formed along the top edge outside the pit. However zagadki work out in the direction from operating open pit wall to the outside.
Common features of a known method of penetration cutting trench with pereekskavatsii overburden the draglines with the claimed invention are:
- drilling cutting trench longitudinal Stripping with benches;
- storage overburden to external dumps, placed on the upper landing outside the pit;
- placement of overburden rocks in the outer blade tiers;
- formation of external blade front work.
The disadvantage of this method of drilling cutting trench with pereekskavatsii overburden the draglines are sizeable amounts of pereekskavatsii when moving overburden. This breed Stripping move sites located one after the other. The General direction of moving overburden areas do not coincide with the direction in which the distance of the move overburden is the shortest, and it exceeds the shortest distance, further increasing the volumes of pereekskavatsii overburden. At each site (except the first phase) moved its volume of overburden, which is the amount of pereekskavatsii. Total roaming the volume of overburden of all parts (except the first) is the amount of pereekskavatsii overburden longitudinal Stripping zagadki. So the more of these areas, the bigger pereekskavatsii overburden. The increase in pereekskavatsii when moving overburden accompanied by an increase in wage costs, costs of materials and electricity, dust when unloading overburden an increasing number of sites.
The reason of increased volume of pereekskavatsii when moving overburden using well-known methods of tunneling cutting trench is the lack of technical solutions aimed at reducing the volume of pereekskavatsii when moving overburden.
Thus, the problem of improving the efficiency of the method bestransportnye sinking cutting trench is a reduction of volumes of pereekskavatsii when moving overburden.
The claimed invention is aimed at solving the tasks to increase the efficiency of the method bestransportnye sinking cutting trench by reducing the volume of pereekskavatsii when moving overburden.
The technical result of the invention consists in increasing the efficiency of the method bestransportnye sinking cutting trench by reducing the volume of pereekskavatsii when moving overburden.
The technical result of the invention is attained by the fact that in the way bestransportnye sinking cutting trench, including maintenance Stripping longitudinal Stripping-benches with the laying of overburden to external dumps, placed on the upper landing outside the pit, and the storage overburden to external dumps tiers in front of dumping, according to the invention, storage overburden lead in the transverse direction to the longitudinal Stripping the section.
The storage overburden in the transverse direction to the longitudinal Stripping the section allows to form a front dumping at right angles to the upper edge of the outside Board career and combine front of dumping to the direction of movement of overburden from the bottom longitudinal Stripping zagadki their filling.
This can reduce the number of lots moving overburden as a result of storing these rocks to one, that is to carry the dumping of overburden only once. This breed Stripping move in the direction coincides with the direction of the shortest distance from the bottom to the designated dumping of overburden. This reduces the amount of pereekskavatsii overburden, i.e. the technical result is achieved.
The method is carried out using excavation - transport complex in the Russian Federation patent for invention №2456454, CL ES 42/00, E02F 3/54 published 20.07.2012. Bul. №20. This proves the compliance of the proposed method the condition of patentability "industrial applicability".
Unlike the prototype proves the compliance of the proposed method the condition of patentability of "novelty". The prior art is unknown to conduct dumping of overburden rocks in the transverse direction to the longitudinal Stripping the section cutting trench in the case bestransportnye her sinking, which proves the compliance of the proposed method the condition of patentability of "inventive step".
The invention is illustrated by drawings, which are shown in figures 1, 2, 3, 4, 5.
Figure 1 shows a storage overburden in the first tier foreign blade at the sinking of the first longitudinal Stripping zagadki cutting trench (cross section).
Figure 2 presents the sinking of the first longitudinal Stripping zagadki split the trench during the storage overburden in the first tier foreign dump (plan).
Figure 3 - the dumping of overburden rocks on the slope of the dump sloping ledge layers (longitudinal section in the direction of penetration of the longitudinal Stripping zagadki cutting trench).
Figure 4 - storage overburden in the second tier external dump when drilling the second longitudinal Stripping zagadki cutting trench (cross section).
Figure 5 - the sinking of the second longitudinal Stripping zagadki split the trench during the storage overburden in the second tier external dump (plan).
The position of the way bestransportnye sinking cutting trench is indicated by the following figures:
1 - Stripping-running non-platform;
2 - pole Stripping running non platformy;
3 - moldboard running non-platform;
4 - mast moldboard running non-platform;
5 - interim suspension of the non-platform;
6 - mast interim suspension of the non-platform;
7 - a system of ropes;
8 - way bucket to the bottom of the V-shaped form;
9 - split trench;
10 - the first longitudinal Stripping the section;
11 - the second longitudinal Stripping the section;
12 - working Board career;
13 - outside the wall of the open pit;
14 - external dumps of overburden;
15 - the first tier of external dumps of overburden;
16 - the second tier of external dumps of overburden;
17 - ledge rock dump;
18 - cliff ledge rock dump;
19 - inclined layer of rock dump;
20 - front dumping of overburden to external dumps.
In figure 1 the dotted lines show the second longitudinal Stripping the section 11 and the working Board career 12. Figure 2 points show the layout of boreholes of exploding the block.
Excavation conveying complex is intended for excavation of overburden rocks in operational trenches and move them to external dumps (figure 1, 2, 4, 5). Consists of a three-way rotary platform - Stripping 1, moldboard 3 and 5 intermediate. Each non-tradable platform 1, 3, 5 and equipped with one mast 2, 4, 6, respectively. Mast 2, 4, 6 are interconnected by a system of ropes 7, which are attached to bilateral bucket to the bottom of the V-shaped 8. Bucket 8 draws rock overburden face longitudinal overburden benches 10, 11, moves them through a system of ropes 7 to external dumps 14 and store in tiers 15, 16, etc. on a cliff ledge rock dump 18 inclined layers 19.
The way bestransportnye sinking cutting trench is as follows. In accordance with the parameters of cutting trench 9 rebuilt cross profile of the external dump 14, which height is divided into tiers 15, 16, etc. the Number of tiers and their height accept depending on the height of unloading of bilateral bucket to the bottom of the V-shaped 8. Split trench 9 share on the longitudinal Stripping zagadki 10, 11, etc. and their number equals the number of levels of external dump 14 overburden (15, 16 and so on). The volume of overburden rocks in each longitudinal Stripping the section is equal to the volume of dump rock in the appropriate tier with allowance for of coefficient of loosening.
The first longitudinal Stripping the section 10 is passed as follows (figure 1. 2, 3).
Stripping running non-platform 1 is placed at the top of the desktop Board the 12 career and moves along its upper edge. Moldboard running non-platform 3 is located on the lower ground tsepelovo first tier 15 external blade 14 overburden from the external borders of the external blade 14 overburden (relatively cutting trench) and moves along this border. Interim suspension of the non-platform 5 is located on the lower ground tsepelovo first tier 15 from internal external borders of the blade 14 overburden (relatively cutting trench) and moves along this border.
Overburden the first longitudinal Stripping zagadki 10, passable along the top edge of the outside of the Board 13 career, place in the first tier 15 external blade 14 overburden, otsypana on the top floor of outside Board 13 career. Front dumping 20 overburden to external dumps form a straight line and have at right angles to the upper edge of the outside of the Board 13 career.
Bucket 8 excavation transport complex draws rock overburden in the first longitudinal Stripping the section 10, moves, and unloads them along the straight front 20 dumping of overburden rocks in the first tier 15 external dumps of overburden 14. While the front dumping of overburden 20 combined with the direction of movement of overburden from the slaughter of the first longitudinal Stripping zagadki 10 to the place of their storage to external dumps 14 on the slope of the escarpment 18 rock dump. The dumping of overburden rocks on the slope of the escarpment 18 dump rock are inclined 19 layers (figure 3). (Figure 3. positions 1, 2, 3. 4, 5, 6, 9, 10, 11. 12, 13, 14. 16 not visible, and the positions 1, 2, 3, 4 5, 6 shown in figure 1, 2, 4. 5, 6 and 9, 10, 11, 12, 13. 16 shown in figure 4, 5). Straightness front dumping of overburden 20 at right angles to the upper edge of the outside side of the ledge 11 is a result of the move bucket 8 in a straight line.
Overburden occiput on the front line 20 in the direction from the top of the outside edge of the Board 13 career to the outer limits of the outer blade 14 overburden. When deriving the bucket 8 of overburden rocks in the bottom of the first longitudinal Stripping zagadki 10 remains rock, located between tracks pass bucket 8. The height of the rock ridge does not exceed (0,2-0,3) the height of the side wall bucket 8. This breed move to track the passage of the bucket 8 bulldozer. The thickness of the layer of rock dump 19 accept equal to the width of a ladle 8 and form when shifting excavation-transport complex. As a result, the drawing of overburden rocks in the first longitudinal Stripping the section 10, their transportation and landfilling in the first tier foreign blade 15 run along a straight-line work. This pereekskavatsii overburden is excluded.
After the sinking of the first longitudinal Stripping zagadki 10 and the formation of the first tier 15 external dumps of overburden 14, excavation-conveyor complex is returned back (idle) speed in the source position for sinking the second longitudinal Stripping zagadki 11 (3, 4, 5). Stripping running non-platform 1 offset from the top edge of the desktop Board career 12 in the direction of the array to the width of the second longitudinal Stripping zagadki 11 and move along the top edge of the desktop Board career 12 in the direction of testing the second longitudinal Stripping zagadki 11, coinciding with the direction of the sinking of the first longitudinal Stripping zagadki 10. Otvalnyh running non-platform 3 place at the platform tsepelovo second tier 16 from external borders external blade 14 overburden (relatively cutting trench) and move along this border. Interim suspension of the non-platform-5th place at the platform tsepelovo second tier 16 from internal external borders of the blade 14 overburden (relatively cutting trench) and move along this border.
The process of penetration of the second longitudinal Stripping zagadki 11 with the laying of overburden in the second tier of 16 external dump 14 repeated similar processes sinking of the first longitudinal Stripping zagadki 10 with the laying of overburden rocks in the first tier 15 external blade 14. When the number of longitudinal overburden benches in cutting trench more than two technology of their sinking similar set out.