RU1778219C - Method for screening of hydraulic mine-dump bed - Google Patents

Abstract

Usage: in hydraulic engineering, in particular in the construction of ash dumps and tailings. SUMMARY OF THE INVENTION: a method of shielding a dump bed includes the construction of a primary soil screen, horizontal alluvial beds and additional screens between the beds. In this case, the bed of the hydraulic dump by the beginning of the first winter for the invention relates to the field of hydraulic engineering, in particular to methods for erecting screening screens for hydraulic dumps, mainly gold dumps and tailings. The purpose of the invention is to increase the anti-filtering effect of the screen of the dump bed by improving the shielding technology when erected in harsh climatic conditions. The invention is illustrated in FIGS. 1 to k, where a transverse seeding is shown, poured with a layer of water or pulp at a depth exceeding the protruding irregularities. Then this layer is frozen and thereby a leveling ice bed is created on which the primary screen is sprinkled from clay soil. After that, in the summer, the first rus is washed over it, at the same time, voids in the ground are closed, the ice bed and thaw are thawed, and thereby the bed is lowered onto the bed surface and the primary screen is self-sealing. After the first Rus has been washed up, its surface is drained and then frozen during the second winter to a predetermined depth, after which the first additional screen of clay soil is poured onto it. Then in the summer they wash the second Rus. In subsequent winter and summer cycles, the technological operations for washing the Rus and creating additional screens between them are similarly repeated. 2 s.p. f-ly, k ill. Hydraulic dump at different stages of its construction. The method is carried out as follows. A non-filtering enclosing dam 2 is poured onto the base 1 prepared by the well-known expert methods. Base preparation is carried out only within the dam profile 2, and over the entire area of the hydraulic dump bed 3, in particular in hard-to-reach wetlands and in areas where peat bogs and others lie soft soils, limited only by cutting VI VI 00 hO che

Description

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trees and shrubs at the level of the earth's surface, without uprooting stumps, while maintaining the cover layer of soil and plant soil its natural shielding effect. Planning work - excavation and backfilling is performed only in local areas with a particularly unfavorable or disturbed terrain, for example. measures in places of karst funnels and dips, deep artificial workings with steep slopes, powerful peat tench, ravine, etc.

After completion of these works, by the beginning of the first winter, fill the thicket of the hydraulic dump with a layer of water or pulp to a depth exceeding the protruding irregularities on the surface of bed 3, then by naturally seasoning this layer, create a leveling ice or pulp-ice bed 4, which until the end of winter sprinkled from clay soil (talomests of expected significant deformations during thawing of an ice bed, for example, over highly compressible peat lenses, over deep local depressions or marshy areas etc"

The application of the invention allows to simplify the technology of erection of hydraulic dumps, to reduce the cost of their construction and to carry out year-round work in harsh climatic conditions using frozen clay soils and natural processes of freezing and thawing of water and soil. The advantages of the claimed method also include the possibility of using it when shielding existing hydraulic dumps that do not have a primary screen, and the simplification of the engineering preparation of the bed and screen device, in particular, the absence of the need to excavate

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and the passage of mechanisms on such soils and wetlands, and, as a result, the ability to completely abandon the arrangement of temporary roads in the bowl, cutting trees and shrubs and cleaning the bed in hard-to-reach spots can be performed in the winter after seasonal freezing of the soil to a sufficient depth.

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th and / or frozen) primary screen 5; 25, the replacement or compaction of soft soils is then washed in the first rus 6 in the summer, while the voids in the soil of the primary screen 5 are washed out, thawed and the ice bed C are thawed, and bed 3 is then lowered onto the surface JQ and the primary screen 5 is self-sealing. After when the first Rus 6 is washed up, its surface is drained and then frozen during the second winter to a predetermined depth that provides the required bearing capacity of the seasonally frozen layer (not shown in FIG. 2), after which the first additional screen 7 is made of clay stack soil.

Then, in the next warm season of the year, a second rus 8 is washed in, while the voids in the soil of the additional screen 7 are washed out and at the same time it is thawed and self-compacted. In subsequent winter and summer cycles, the aforementioned technological operations are repeated in the same way to wash the next stages 9 and create additional screens 10 between them in the process of building the hydraulic dump. When the dump is located on a weak base, the strength of the ice bed 4 is enhanced by increasing its thickness so that it has sufficient load-bearing capacity when moving mechanisms along it during the filling of the primary screen 5. Thickness; primary screen 5 can be increased in

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Claims (3)

1. The method of shielding the dump bed, including the erection of the primary soil screen, horizontal layers of the stored ala matter and additional soil screens between the alluvial beds, is limited by the fact that, in order to increase the anti-filtering effect of the screen by improving the screening technology when erecting the hydraulic dump in harsh climatic conditions, the bed of the hydraulic dump at the beginning of the first winter is poured with a layer of water or pulp with a depth exceeding the protruding irregularities on the surface of the bed, Then, by naturally seasonally freezing this layer, a leveling ice or pulp-ice bed is created, on which the primary is poured without compaction until the end of the same winter 82194 places of expected significant deformations during thawing of an ice bed, for example, over highly compressible peat lenses, over deep local depressions or wetlands, etc. The application of the invention allows to simplify the technology of erection of hydraulic dumps, to reduce the cost of their construction and to carry out year-round work in harsh climatic conditions using frozen clay soils and natural processes of freezing and thawing of water and soil. The advantages of the claimed method also include the possibility of using it when shielding existing hydraulic dumps that do not have a primary screen, and the simplification of the engineering preparation of the bed and screen device, in particular, the absence of the need to excavate 5 0 5 replacement or compaction of soft soils Q and the passage of mechanisms on such soils and wetlands, and, as a result, the possibility of completely abandoning temporary roads in the bowl, cutting of trees and shrubs and cleaning the bed in hard-to-reach places can be performed in winter after seasonal freezing of the soil to a sufficient depth. replacement or compaction of soft soils replacement or compaction of soft soils The claims 1. The method of shielding the dump bed, including the erection of the primary soil screen, horizontal layers of the stored ala matter and additional soil screens between the alluvial beds, is limited by the fact that, in order to increase the anti-filtering effect of the screen by improving the screening technology when erecting the hydraulic dump in harsh climatic conditions, the bed of the hydraulic dump at the beginning of the first winter is poured with a layer of water or pulp with a depth exceeding the protruding irregularities on the surface of the bed, Then, by naturally seasonally freezing this layer, a leveling ice or pulp-ice bed is created, on which the primary is poured without compaction until the end of the same winter 5177 a screen of thawed and / or frozen clay soil, then in the subsequent warm period of the year the first bed of the hydraulic dump is washed on it, while the voids in the clay soil layer are washed out, the frozen lump contained therein and the ice or pulp-filled bed for self-compaction of the primary are thawed the screen and its lowering to the surface of the bed, after the completion of the washing of the first Rus, its surface is drained by the beginning of the next winter and then frozen to a depth that provides the required bearing capacity of the seasonal layer, and then to at the end of this winter, the first additional screen is poured out of clay soil, then in the next warm period of the year the second rim of the hydraulic dump is washed, while the voids in the soil of the additional screen are washed and thawed and self-compacted at the same time, in the following winter and summer cycles the same way The aforementioned technological operations for the washing of the russ and the creation of additional screens between them in the process of building the hydraulic dump are performed. 2. The method of pop. 1 is distinguished by the fact that, if there is a layer of low-strength soil on the surface of the hydraulic dump bed, the strength and bearing capacity of the ice bed are enhanced by a corresponding increase its thickness. 3. The method according to claim 1, with the exception that in places of expected significant deformations during thawing of an ice bed, for example, over strongly compressible peat lenses, deep depressions or wetlands, the thickness of the primary soil screen will increase accordingly - they are. .2 / / / a7  / L „L 1 -. T J, r., R JC J.E.G y T. - J.J- - .y J GL; L | .. J -111Iuf CT4v / w vjww // y4wAw v / WfffT / fff i /} /// M J Of ft / 7 s / L FIG. 4