Method for high layered dump forming

FIELD: mining, particularly to create high dumps during open pit mineral mining.

SUBSTANCE: method involves forming preliminary dump layer near outermost deep pit outline with the use of cyclically acting means at optimal rock transportation shoulder; digging out steeply inclined semi-trench in pit side in overburden rock location zone and in direction of pit outline sections of the first, the second and the third excavation orders from depth corresponding to optimal vehicle operation height; creating embankment on surface by forming a number of transversal transport paths made as temporary dumps having heights increasing to preliminary dump mark so that embankment is at predetermined angle to preliminary dump; mounting crushing machines on main haulage level inside pit; installing in-line conveyance means in trench and in preliminary dump; covering thereof with light-weight snow-protection tent. Dumping operation is performed in parallel runs from stacking conveyor, wherein rock is received with inclined boom-mounted mechanism of plate feeding means arranged in tube-shaped structure supported by sliding supports so that the structure may rotate in place of structure connection with stacking conveyer. Boom length is selected from inclined dumped rock layer thickness to provide minimal dump settlement in unloading device installation place. Dump embankment forming for main conveyer of the second order is continued by preliminary dump forming within design dump outline by means of in-line conveyance means and by rock stacking on dump and by cyclic means. After that the second and the third dump layers are constructed. To prevent dump deformation rock layer stacked in winter is covered with snow-free buffer rock so that said layers have equal thicknesses. As central and deep pit zones are developed main conveyer is enlarged by installing new crushing equipment section on the second haulage level formed in permanent side. Conveyer path enlargement is continued with the use of steeply inclined and vertical conveyers to provide threshold distance of rock conveyance to crushing unit by collecting transport specified by optimal collecting transport operation.

EFFECT: increased dumping efficiency.

1 ex, 5 dwg

 

The invention relates to the mining industry and can be used in surface mining in dumping of high dumps.

There is a method of dumping of spoil, consisting in a layer-stacking with the use of road transport [1].

The disadvantage of this method is that the sites for dumps are selected at a considerable distance from the quarry, and the distance of transportation of rock from the quarry and shipping on the second and third tiers may be 2-3 times higher than the limit at the right border of this mode of transport. And disordered landfilling of different strength of rocks leads to deformations of the piles.

There is a method of dumping dumps using continuous dumping of [2].

The disadvantage of this method is significant destruction of sites conveyor dumps from the quarry and a small height of the dumps.

Closest to the proposed to the technical essence and the achieved result is a method of filling high dumps, involving production transportation and placement of rocks spreader [3].

The disadvantage of this method is that the track of the main conveyor is chosen close to perpendicular, which is at a small angle conveyor lifts significantly prolong the dumps from the quarry. In addition, formed the mound has been created under the main conveyor has a zigzag shape, that increases the complexity of dumping piles, conveyor blade has a small height. Due to the large sail of the spreader and precipitation in practice laying breed in the blade is made by the excavator.

The aim of the present invention is to increase the efficiency of dumping in dumping of high dumps due to the closer location of spoil from the pit, the use of flow technology in dumping of the second and third tiers of the blade and less time-consuming way in dumping pioneer mound for trunk pipeline.

This objective is achieved in that in the known method of dumping of spoil, including the trench, forming pioneer mound for the overland conveyor, stockpiling, occiput first tier of pretotal by means of cyclic steps (vehicles) at the optimum haulage distance of the rocks, then Board a career in the area of the overburden and in the direction of the sections of the career paths I, II, III phases of mining from a depth corresponding to the optimum working height of the vehicle, spend a steeply polytrans, and on the surface occiput mound at the required angle to pretotal summing-group cross traffic lanes in the form of temporary dumps with increasing height to the level of pretotal, Mont shall demonstrate concentration on the horizon in the quarry crusher, in the trench and on predatore means continuous transportation (pipelines), close to shed light galvanized sheets of snow, dumping are parallel benches with the dump conveyor receiving breed inclined cantilever mechanism type plate feeder, placed in a tubular design, based on the carrier bearings and having the ability to rotate in place splicing with otvajnym conveyor, and the arm length is determined by the thickness of the inclined layer filled with rocks and provides an in place install the unloader minimum draught of the blade, and the detuning of pretotal with one hand in the project boundaries blade means continuous transportation and placement of rocks in the blade, and other means of cyclic actions (by road) resume dumping moldboard mound for main pipeline of the second stage and produce the offset of the second tier and then the third tier of the high blade, and to prevent its deformation thick layers of winter filling cover the corresponding output buffer from the rocks without snow, the development of the middle and deep zones in the career of the main conveyor is extended with a new crushing equipment link on the second concentration horizon, organized on a permanent Board, and the development of the con is aerni tracks with the use of steeply inclined and vertical conveyors continues until, while the distance of the delivery Assembly and transport to the crushing element reaches the limit value, beyond the field of optimal actions.

Figure 1-3 shows the main production and barrows and stages of development of high conveyor blade in the North-Western side of the quarry near the contours of the testing of the second and third phases of testing; 4, 5 - for comparison.

Figure 1. 1 - polytrans

2 - barrow

3 - the main conveyor

4 - transport mound (temporary dump)

5 - predator

6 - portable crushing plant

7 conveyor conveyor

8 - handling device

9 - highway

10 - pipeline trench

12 - stages of field development (I, II, III)

Figure 2. 2 - barrow

4 - transport mound (temporary dump)

Figure 3. 1 - polytrans

3 - the main conveyor

6 - portable crushing plant

7 conveyor conveyor

8 - handling device

10 - pipeline trench

11 is a vertical or steeply inclined conveyor

12 - stages of field development (I, II, III).

To compare

Figure 4. Conveyor blade in the North-Western side of the Kovdor quarry (Mining Institute KSC RAS).

Figure 5. Accommodation dumps East of the mine of OJSC "Apatit" (Koashvinsky quarry) (Giproruda).

An example of executing

How is Tsypko high dumps near the quarry is illustrated by diagrams, shown in figure 1-5, and is carried out as follows. On Coachinc.com career OJSC "Apatit" in the North-Western bot with GCP. +190 m must hold polytrans 1 in the direction of the career paths of the second and third stages of development up to the mark. +290÷+300 m, and on the surface of the pour mound 2 at an angle of the main conveyor 3 by carrying out lateral embankments (temporary dumps) 4 with increasing height up to the mark. +360÷+370 m blade # 3 (predator), and then plan the mound to pretotal 5. After installation of the equipment (crushing plant) 6 in his career and on the blade conveyor conveyor 7 on one side of pretotal start filling breed production technology, and instead of the spreader with large windage and load use small mechanism in the form of an inclined jib type plate feeder 8, which take the rock from the dump conveyor 7 and unloading it into a ditch, and unloading mechanism of this type, as the conveyor 3, 7 in winter closed (from snow), this unloading mechanism is placed in the tube-like design on mobile supports and has the ability to rotate around the receiving base (bunker with the dump conveyor 7. The location of the unloading mechanism in 15-20 m from the slope reduces the strain rate 2-3 times and may be 100 to 150 mm/day which is much safer in comparison with unloading trucks downhill (300-400 mm/day). On the other side of pretotal 5 filling are by road: highways 9 with a minimum haulage distance from the quarry 0,3-0,8 km, and the forming of the first tier. Then in the setup of the main conveyor 3 on predatore 5 construct similar inclined nasuti 2 with the use of vehicles in a specified way and mount the conveyor 3, 7. The height of filling of the second tier can also be 100 meters

Elongation of the conveyor track 3, 10 in career allows you to increase the volume of rocks transported by the production technology. Following crushing and link with cone crushers 6 can be located at elevation. +85÷+90 m Deepening of about 100 m Therefore, to increase performance up to 30-40 million tons of rock a year you should replace the belt width 2000 mm in the mountains. +190 m width 3000-3500 mm or apply a conveyor speed ν=3.5 m/s, and at the new site (the mountains. 190÷90 m) to apply a conveyor located above performance - 20 million tons/year. With the deepening of mining crushing element 6 can be moved in elevation. -110 m in the Northern Board, and the project with mark. bottom -290 m studies depth of the pit can be increased by 150-200 m (up to the mark. bottom - 450-500 m).

Increase performance career on the breed application of flow technology and depth of career can is to be filled in the third tier. The formation of the embankment for the detuning of the third tier can be carried out as indicated above.

At elevation. horizons -200 and -300 m is expedient for the construction of vertical conveyors 11, which would require smaller spacing Board for palutena and will meet performance career by Stripping at deeper horizons.

The capacity of the blade at his bunk structure is 120 million m3when a three-tiered - 230 million m3.

With the average performance flow technology 30 million tons/year and work career 20-30 years in the blade can be placed around 600-900 million tons of rock.

When the average value of reducing the distance of transportation of rocks by road - 3-5 km overall effect will be e=C·ΔL-Vn.

CT=3,1 RUB·t·km and V=6-8 m3/year; γ=2.7 t/m3

the economic effect will be

E=3,1·4·7·2,7=840 million rubles/year,

where 4 km - a reduction of haulage distance of the rocks compared to use of vehicles.

Sources of information

1. Casemates, Weaning. Design pits. M: "Nedra". - 1981. - 464 S.

2. The directory of Open pit mining / Kontrabecki, Mgoto, Kainitzky and others - M.: Mining Bureau, 1994.

3. Cyclic-flow technology for ore and overburden at the quarry Kovdorsky GOK / Century Is Usynin, Spicetec, Sensationof // Cyclic-flow technology at the quarries of the Arctic. - Apatity. - 1986. - P.12-27 (prototype).

The method of filling high dumps, including trenches, forming pioneer mound for the overland conveyor, stockpiling, use of cyclic steps and cyclic-flow technology in dumping rocks on the space allocation and selection stages of field development, characterized in that near the limit of the contour deep career occiput first tier of pretotal by means of cyclic steps (vehicles) at the optimum haulage distance of the rocks, then Board a career in the area of the overburden and in the direction of the sections of the career paths I, II, III phases of mining from a depth corresponding to the optimum working height of the vehicle, spend a steeply polytrans, and on the surface occiput mound at the required angle to pretotal summing-group cross traffic lanes in the form of temporary dumps with increasing height up to the level of pretotal, mount concentration on the horizon in the quarry crusher in the trench and on predatore means continuous transportation (pipelines), close to shed light galvanized sheets of snow, dumping are parallel benches from the dump, convey is and reception breed inclined cantilever mechanism type plate feeder, placed in a tubular design, based on the carrier bearings and having the ability to rotate in place splicing with otvajnym conveyor, and the arm length is determined by the thickness of the inclined layer filled with rocks and provides an in place install the unloader minimum draught of the blade, the detuning of pretotal with one hand in the project boundaries blade means continuous transportation and placement of rocks in the blade, and on the other, by means of cyclic actions (by road) resume dumping moldboard mound for main pipeline of the second stage and produce the offset of the second tier and then the third tier of the high blade, and to prevent its deformation the thickness of the layers of rocks winter filling cover the corresponding output buffer from the rocks without snow, the development of the middle and deep zones in the career of the main conveyor is extended with a new crushing equipment link on the second concentration horizon, organized on a permanent Board, and the development of the pipeline route with the use of steeply inclined and vertical conveyors lasts as long as the distance of the delivery Assembly and transport to the crushing element reaches the limit value, beyond the field of optimal actions.



 

Same patents:

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EFFECT: higher efficiency.

1 dwg, 1 ex

FIELD: mining industry.

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EFFECT: higher efficiency.

1 ex, 10 dwg

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