The ore-drawing method to improve the utilization rate of tailings storage capacity

Abstract

The invention provides an ore drawing method for improving the utilization rate of the storage capacity of a tailings pond. The ore drawing method comprises the steps that firstly, an initial dam (1), drainage shafts (2) and a drainage pipe (3) are constructed; secondly, an ore drawing main pipeline is made to conduct beach top scattered ore drawing on a dam front beach top of the initial dam (1); thirdly, the ore drawing main pipeline is horizontally moved to the interior of the tailings pond in order to conduct scattered ore drawing; fourthly, the third step is repeated until the residual pond length is not smaller than the required transparent distance. On the foundation that proper ore drawing methods are selected according to practical pond shape conditions of different tailings ponds, the utilization rate of the storage capacity of the tailings pond is improved, the effective storage capacity is increased, the storage amount of the tailings pond is increased, the service life of the tailings pond is prolonged, and more economic benefits are created for enterprises.

Description

technical field [0001] The invention relates to the technical field of tailings accumulation in mining, in particular to an ore drawing method for improving the storage capacity utilization rate of tailings storage. Background technique [0002] The storage capacity utilization coefficient refers to the ratio of the effective storage capacity to the full storage capacity, which is related to the shape of the tailings pond, the size of the tailings, and the method of ore drawing. In "Reference Materials for Design of Tailings Facilities" (Metallurgical Industry Press, April 1980), it is suggested that for narrow and winding valleys, the storage capacity utilization factor should be 0.6 to 0.7 when drawing ore on the dam; The mine storage capacity utilization factor is taken as 0.7~0.8. The actual tailings reservoir area has different topographical conditions. Some reservoir areas have a length of more than one kilometer or several kilometers and form a belt-shaped valley; T...

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Problems solved by technology

[0004] For tailings ponds with many lateral ditches, the same problem exists. It is difficult for alluvial tailings to enter the ditches. On the contrary, tailings water is more likely to enter the ditches. However, due to its topographic location, backwater , flood control, investment and other issues are often not equipped with flood drainage and return facilities, so it is easy to form a dead water area in the tributary ditch, which is not good for the safety of the tailings pond

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