Damming method of tailing subdam

Abstract

The invention relates to a damming method of a tailing subdam and belongs to the technical field of mine dam construction. The damming method comprises the steps: firstly, designing the slope of a tailing fill dam and the height of the subdam by adopting a conventional method, and designing the positions and the quantity of draining well pillars according to seepage and stability calculation; when tailings are piled up to the elevation of the top of a starter dam, performing paying-off location on the subdam and determining the mounting starting point position of the subdam which is composed of prefabricated parts; mounting the prefabricated parts by an all-stretcher bonding method; next, backfilling soil in the chamber of the prefabricated parts; when the elevation of the subdam reaches the predetermined elevation of each draining well pillar, nesting the prefabricated part in the corresponding position to the draining well pillar until the subdams in a whole tailing piling storage area are completely built. The damming method provided by the invention avoids the problems of heavy sand blowing of fine-particle tailings and unsmooth drainage in a dam body, and is advantageous for effectively reducing the seepage line; furthermore, the safety of a tailing warehouse is ensured; as a result, the prejudice that the fine-particle tailings are not suitable for direct damming in the prior art is overcome; at the same time, the damming method of the tailing subdam is simple, convenient, quick, stable and safe, and also capable of beautifying the environment.

Description

technical field [0001] The invention relates to a method for building tailings dams and belongs to the technical field of mine dam construction. Background technique [0002] Tailings pool refers to the place where dams are built to intercept valley mouths or enclosures, and are used to stockpile metal or non-metal mines for ore sorting and then discharge tailings or other industrial waste. The tailings pond is a high potential energy man-made debris flow hazard, and there is a danger of dam failure. Once the accident occurs, it is easy to cause serious accidents. [0003] Tailings refer to the ore mined from metal or non-metal mines, and the "waste residue" discharged after the valuable concentrate is selected by the concentrator. Due to the large amount of these tailings, they contain useful or harmful components that cannot be treated temporarily, and if they are discharged randomly, they will cause resource loss, flood farmland or silt up rivers in large areas, and poll...

AI Technical Summary

Problems solved by technology

At the same time, fine-grained tailings will cause serious sand blowing and poor seepage in the dam body, which will cause certain environmental impacts, and will not be conducive to effectively reducing the infiltration line, thereby affecting the safety of the tailings pond

The final stacking height of the dam with fine particle tailings will also be greatly limited, which is obviously uneconomical for tailings ponds that occupy a large area

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