Tailing dam damming method

A tailings dam and tailings technology, applied in the field of mine engineering, can solve problems such as the limited height of one-time dam body, frequent movement of tailings transportation and grading facilities, and difficulty in dam stacking in rainy seasons, etc.

Inactive Publication Date: 2012-07-04
JIANGXI COPPER
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  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used accumulation dam construction methods have the disadvantages of one-time dam body elevation limited, tailings conveying and grading facilities are frequently moved, resulting in large dam construction volume, high cost and difficulty in dam construction in rainy season, which is a disadvantage of mine production. restrictive technical issues

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Embodiment Construction

[0011] refer to figure 1 It can be seen that a kind of tailings dam construction method process step is: a: use the cyclone to classify the former tailings slurry to produce the coarse sand of the dam; When the sand cannot be naturally discharged and accumulated, stop the graded production and stack the coarse sand for 1 day, and discharge the original tailings slurry directly into the tailings pond, allowing the deposited coarse sand to seep naturally, so that the water content of the dam coarse sand is less than 20%; c: in the pile Build a cofferdam at the dam, enclose a space for continuing to pile up coarse sand, and repeat 8 times of classification-seepage-cofferdam operations to form a new dam body; d: repeat the above steps, and carry out slope protection operations for inner and outer slopes, so that The overall outer slope of the tailings dam is controlled at 1:3, and the first phase of the new dam is completed; e: Then the next phase of the dam is raised along the ce...

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Abstract

The invention provides a tailing dam damming method, which includes: a, producing coarse sand for damming by utilizing a cyclone to screen original tailing pulp; b, discharging and stacking screened coarse sand at the damming position naturally, screening for 2 to 4 days, stopping screening for 1 to 2 days when the coarse sand cannot be discharged and stacked naturally, discharging original tailing pulp into a tailing pond, dewatering deposited coarse sand naturally until the water content of the coarse sand for damming is smaller than 20%; c, constructing a coffer at the damming position and enclosing a space for stacking coarse sand continuously, repeating classification-dewatering-coffer constructing for 6 to 10 times and damming a dam section; d, repeating the above steps, performing slope protection for an inner slope and an outer slope so that the gradient of the outer slope of the tailing dam is controlled by 1:3 integrally and further completing the first-stage damming of the dam body; and e, damming the next-stage dam body by raising the center axis of the dam body of the first stage. The tailing dam damming method has the advantages that the height of the dam body can be increased greatly at one time, safety technical conditions of the tailing pond can be enhanced, and damming quantity and cost can be reduced.

Description

[0001] technical field [0002] The invention relates to a method for building a tailings dam, which belongs to the technical field of mine engineering. Background technique [0003] Tailings dam refers to the accumulation dam that intercepts the mouth of the valley or the enclosure to form the tailings pond. It is formed by filling and piling up the tailings on the crest of the initial dam. It is mainly used to stockpile metal or non-metal mines and discharge them after sorting. Tailings or other industrial waste. Commonly used accumulation dam construction methods have the disadvantages of one-time dam body elevation limited, tailings conveying and grading facilities are frequently moved, resulting in large dam construction volume, high cost and difficulty in dam construction in rainy season, which is a disadvantage of mine production. Constraining technical issues. Contents of the invention [0004] The object of the present invention is to disclose a tailings dam con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/18
Inventor 陈茂林管勇敏黄雪平冯模伧李小生
Owner JIANGXI COPPER
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