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Median type tailing damming method utilizing mold bags

A mold bag and tailings technology, which is applied in construction, soil protection, filling, etc., can solve problems such as potential safety hazards, coarse-grained tailings, and dust on the dam surface in windy days, so as to reduce costs and energy consumption. The effect of improving dam building efficiency and improving grouting efficiency

Active Publication Date: 2015-09-16
BEIJING GENERAL RES INST OF MINING & METALLURGY
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Problems solved by technology

[0009] However, the existing midline tailings damming method needs to consume more coarse-grained tailings, and with the continuous improvement of the beneficiation process, the content of fine-grained tailings in the storage tailings is getting higher and higher. In the case of insufficient tailings, it is difficult to use the existing centerline tailings damming method for damming
In addition, the dam body constructed by the existing midline tailings dam construction method has a steep slope, a gentle slope, and no platform structure on the downstream dam body 2, which has certain safety hazards, and the dam surface is prone to dust and anti-scouring in windy days. The ability is poor, and it is easy to form gullies when encountering heavy rainfall, resulting in the loss of coarse sand and polluting the environment

Method used

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  • Median type tailing damming method utilizing mold bags
  • Median type tailing damming method utilizing mold bags
  • Median type tailing damming method utilizing mold bags

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Embodiment 1

[0036] Such as figure 2 , image 3 , Figure 4 and Figure 5 As shown, a centerline tailings dam construction method using mold bags can specifically include the following procedures:

[0037](1) Construction process of mold bag grouting system: according to the height and axis position of the current dam body, set up a high-level ore slurry pool 8 at a height of at least 15m higher than the dam crest, and lay an ore-drawing pipeline 9; the top of the ore-drawing pipeline 9 It communicates with the bottom of the high-level slurry pool 8, and the bottom of the ore-drawing pipeline 9 extends downstream of the current dam body.

[0038] Specifically, when there is only the initial dam 1 in the tailings reservoir, the current dam body is the initial dam 1, and when the initial dam 1 already has a heap dam, the current dam body is the current heap dam. The height of the high-level ore slurry pool 8 can be increased along with the height of the dam crest of the current dam body...

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Abstract

The invention discloses a median type tailing damming method utilizing mold bags. The median type tailing damming method has the advantages that the grouted mold bags 7 are piled up to build a downstream dam body 2, the downstream dam body 2 is kept clean and smooth by the sand consolidation effect of the mold bags 7, and the environmental problems such as dust flying, gullying and coarse sand loss are solved well; tailing pulp with the content of tailing particles, smaller than 0.05mm in size, not larger than 40% (by weight) is taken as mold bag filling pulp for the mold bags 7, so that the particle size range of tailing sand available for damming is widened, sand quantity available for the median type tailing damming method is increased, water drainage of the mold bags 7 can be accelerated, solidification can be speeded up, and grouting efficiency of the mold bags 7 is improved; in addition, the action of gravity is fully utilized for grouting, and the mold bags 7 can be grouted by multiple branch ore drawing pipes 92 at the same time, so that cost and energy consumption are reduced, and damming efficiency is improved.

Description

technical field [0001] The invention relates to the field of tailings pond construction, in particular to a centerline tailings dam construction method using mold bags. Background technique [0002] Tailings pond is a special industrial building used to store a large amount of waste rocks, waste residues, waste water and other wastes generated in the mining process. Whether the tailings reservoir can operate normally is not only related to the economic benefits of mining enterprises, but also affects the safety of life and property of residents downstream of the reservoir area and the stability of the surrounding ecological environment. The tailings dam is the main project of the tailings pond. It is a man-made debris flow hazard source with high potential energy, and there is a danger of dam failure. Therefore, the stability of the tailings dam is one of the key factors related to the normal operation of the tailings pond. . [0003] At present, according to the moving di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/18E02D3/10
Inventor 周汉民崔旋刘晓非王新岩甘海阔郄永波李彦礼韩亚兵张树茂翟文龙
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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