SU1155663A1 - Method of constructing a tail pond - Google Patents

Abstract

METHOD OF CONSTRUCTION OF THE TAILINGS, including the construction of the primary dam of drainage and drainage facilities, the washing of the tails behind the primary dam, dumping in the direction of the upper pool of the cascade of secondary embankment dams followed by washing with the tails of the containers formed by them, in order, for the purpose of intensifying the issue, in order, to apply for the purpose of intensifying the activation of the secondary dam. as a base of washed soil with reduced strength characteristics, reducing capital costs and increasing storage capacity with the initial area of its bed unchanged, a cascade of secondary embankment dams was erected from the ridge of the primary dam. towards the upper pool by an estimated distance determined from the conditions for ensuring the stability of the washed tailings to the abutment and the stability of the lower slope of the structure, and simultaneously with the tank the storages formed by each of the secondary embankment dams in the cascade, from the downstream side, in front of each of the embankment dams, lay out in layers, from filtering soil and loading and filtering soil tailors of the bodies of the tertiary drainage dam, erected on a pre-strengthened base on a height within the carrying capacity of the base, after which a reverse cascade of secondary dams displaced to the downstream with simultaneous tails formed each from dams of the reverse cascade of tanks and dumping from the downstream in front of each of the dams of the reverse cascade of soil of the ground with partial use of each of the Russ as the bases for the upstream dam of the reverse cascade.

Description

eleven

The invention relates to the field of construction of hydraulic structures, in particular, tailing dumps of concentrating factories and can be used for the construction of ash dumps and sludge storages.

There is a method of washing the structures, including the construction of the downstream, internal and upper dams obva.povani, supply of a suspended flow in the stop prism with the formation of the upper wedge, discharge clarified water. Moreover, the supply of a suspended flow is carried out on the minimum level of the base of the foundation between the lower and inner dams, through the trench in which the alluvium is washed up in layers, and the discharge of clarified water is carried out alternately through outlets. The method’s disadvantage is the construction of three dams instead of one and digging special trenches in the body of the internal dike; The consolidation processes are not sufficiently fast during the washing of finely dispersed soil; the impossibility of creating a high-rise structure.

There is a known method for constructing hydraulic structures, which includes stratified soil from a pit with water drainage into a settling pond, according to which after the first layer is washed in, each subsequent layer is washed by moving from the settling pond to sediment with a distribution in the washing zone with a thickness of 0.3-0.4 m, drying to a plastic state, and pouring soil from a quarry on top of it with a layer of thick concrete 0.5-1.0 m 21.

The disadvantages of this method are the long time of settling of finely dispersed soil, the need to drain water from the pond, the need for special mechanisms capable of moving along the water-supply. Schennaya weakly carrying soil.

There is also a known method for the construction of a BW-runnel, including the construction of a primary dam, drainage and drainage structures, tailing of tailings behind the primary dam, dumping in the direction of the upper pool of a cascade of secondary embankment dumps followed by tailings of the reservoirs formed by them 3.

56632

The disadvantages of the known method are the loss of the useful capacity of the tailings when flattening its slope to ensure stability; the impossibility of creating tailings of great height, the insufficiently rapid completion of the consolidation processes of reclaimed soil (tailings), the possibility of

0 processes of lower slope suffusion; low seismic resistance of water-rich fine-grained tailings.

The purpose of the invention is the intensification of the process of consolidation of tails

5 when used as a base of washed soil with reduced strength characteristics, reducing capital costs and increasing the effective area of the tank.

20 storage at the same original area of his bed. .

The goal is achieved by the fact that, according to the method of erecting a tailing dump, including the construction of a primary dam, drainage and drainage facilities, alluvial tailings behind the primary dam, dumping in the direction of the upstream of the cascade of secondary gambi dumping

The subsequent washing-out of the tails of the reservoirs formed by them, a cascade of secondary ramming dams, displaced from the ridge of the primary dam towards the upstream by 5 the calculated distance determined from the conditions for ensuring the stability of the washed tails to the bulge and the stability of the lower slope of the structure as a whole, and at the same time a wash

0 The storage tanks formed by each of the secondary embankment dams in the cascade, from the downstream side before each of the dams, are dumped in layers from the filtering soil loading-1-1x and consolidating

the tails of the bodies of the tertiary drainage dam, erected on a pre-reinforced base to a height within the base bearing capacity. After that, on the surface of the upper russia, a secondary cascade of secondary dams is erected, shifting towards the lower pool with a simultaneous reverse tails,

55 formed by each of the dams of the cascade of tanks and dumping on the downstream side in front of each of the dikes of the reverse cascade of the soil of the soil with partial use of each of the Russ as the basis for the discharged dams of the reverse cascade. FIG. T depicts a tailing dump; a glider view of FIG. 2 is a section A-A in FIG. 1 (the first stage of the work on the first one (from the cascade of the damming line on the surface of the tailings washed up behind the primary dam, indicating the lifting tracks, indicated by arrows, indicating the directions of the dumping dam, the working console for carrying out the dumping of the tailings during the first phase and non-working tured) slurry pipeline to close the tailing tank capacity located behind the first dike of embankment); in Fig. 3 — a tailing dam, view in a plan, in Fig. 4 — section BB in Fig. 3 (continuation of the first stage of works on dumping The first and the first Russian tertiary load-consolidating tails of the drainage dam are located behind the first dam of the worker’s embankment at this stage of the pulverion with the tailings storage tank washed out, formed by the first embankment dam with indication of the access roads to continue dumping of the first direction direction (indicated by arrows) produced as far as the direction of the embankment dam is indicated. the displacement of soil J in Fig. 5, the tailings storage facility, a view to the glider in Fig. 6 - B-B In Fig. 5 (the second stage of works on the construction of a secondary embankment dam, the completion of the first rus, and the beginning of the second rus of the tertiary load-consolidating tails of the drainage dam, the working slurry for the tailings tank capacity is located behind the 2nd embankment dam, in Fig. 7 - tail storage , plan view; in Fig. 8 a section -G-D in Fig. 7 (the tertiary drainage dam, a cascade of secondary ramming dams, the reverse cascade of secondary ramming dams, and formed by these damming cascades. The additional useful capacity of the tailing pond with arrows показано shows the direction of the access roads and the movement of the soil at the final stage of the alluvial tailings.) The method is carried out as follows. After the tailings of the storage dump formed by the primary dam 1 are dumped with tailings of the dumping dam 2, this purpose The tail ponds of the tailing pond 3 are built either perpendicularly or at an angle to the longitudinal axis of the primary dam, access roads 4 are constructed to ensure the erection of the embankment 2. Pl tailing dump The camps are conditionally divided into several maps, ensuring at the same time the construction of a dam over the river & 2 and alluvium of tailings in the tailing dump. FIG. 1-4 shows the sequence of construction of the embankment dam 2 and dumping of the pulp on the railway. During the period of construction, for example, from the left side of the tailing dump of the embankment 2 dam, displaced from the ridge of the primary dam 1 along the surface of the plaque 3 towards the pond by the calculated value determined by ensuring the stability of the base (washed tailings) to the top and the stability of the lower slope of the entire structure , the tailings alluvium continues (see Fig. 1-2) in the opposite side (in the starboard area of the tailings storage facility), free from construction works. This is done by means of distribution slurry pipeline 5 for the dam of the embankment 2. After the dumping of the embankment 2 is completed, dumping slurry 6 on the ridge of the embankment 2 is installed (see Fig. 3 and 4), and as it ends erection dismantling of the distribution pipeline. After the construction of the embankment dam 2 is completed, the first Rus 7 is removed and a drainage system is laid at the same time. The extracts of the first Rus 7, as well as the subsequent Rus, are produced by an uldozer or other construction equipment with the movement of imported fine filtering soil from the crest of the primary dam both towards the pond and to the sides shown by the trills. On the washed tails 8 (see Figs. 2 and 3), a dumping dam 9 is dumped for the embankment dam, after which S115 is completed, the second Rus 10 is filled (see Fig. 5). During the construction of the embankment dam 9, the distribution slurry pipe 11 is installed to close the tank 12 to the row of this dam, and after completion of the work on the dump 9, dismantle the distribution slurry pipe. Then the second grade 10 is filled (see Fig. 5). The sequence of construction of the subsequent ramming dams (Figs. 7-8) and the dumping of the subsequent routes in front of them are carried out in a similar way without special intrasite access roads. With the completion of the last in the cascade of secondary dams 2 embankments, backfilling of the 36 cascade of embankment dams 13 is made to the downstream side in the same way (Fig. 7-8). Compared with conventional technology, the proposed method provides an increase in height by 2 m (70%) with an increase in capacity by 82% with a constant bed area. Due to the load-consolidating effect of the VIS of the Rus, the angle of internal friction of the tails at the base increases from 20 to 26, while the carrying capacity of the soils increases from 0.4 to 1.1 kg / cm (39.2 kPa to 107.9 kPa) and the time of consolidation of tails base is reduced compared with the natural process from 14 to 3 months.

1155663

U- i

i

I p with

Zh Rus

t f

FIG. five

"I

four

t

X

four

l

.. "3

.... -x

. . . i

. . j

 . . . j

Claims (1)

METHOD OF CONSTRUCTION OF THE TAILINGS, including the construction of the primary dam; drainage and drainage facilities, washing the tails behind the primary dam, dumping in the direction of the upper pool of the cascade of secondary dipping dams with subsequent washing by the tails of the tanks formed by them, characterized in that, in order to intensify the process of consolidation of the tails when using the washed soil from the pony as the base strength characteristics, reduction of capital costs and increase of storage capacity with a constant initial area of its bed, cascade of secondary dams bred with a shift from the ridge of the primary dam in the direction of the upper pool by a calculated distance, determined from the conditions of ensuring the stability of the washed tailings to the support and the stability of the lower slope of the structure, and simultaneously with the washing of the storage tank formed by each of the secondary dams in the cascade, from the lower in front of each of the embankment dams, load and consolidate the tails of the tiers of the body of the tertiary drainage dam, which is preliminarily the internal base to a height within the bearing capacity of the base, after which, on the surface of the upper tier, a reverse cascade of secondary dams is erected, shifted to the side of the downstream with the simultaneous washing of the tails formed by each of the dams of the inverse cascade of tanks and dumping from the side of the downstream in front of each from the dams of the reverse The SL of the cad of soil tiers with the partial use of each of the tiers as the basis for the upstream * dams of the reverse cascade. > 1155663 2