Tailings reservoir filling method

Abstract

The invention relates to a filling method of a tailings pond, which is characterized in that tailings are divided into two parts and then respectively transported under a water body before a tailing dam and after the tailings pond for ore drawing so as to realize the balanced and associated ore drawing cooperated by dispersed ore drawing in sections before the dam and the dispersed ore drawing in sections by underwater moving after the pond. The method of the invention controls the dispersed ore drawing in sections after the improvement of the original ore drawing technology before the dam, fully utilizes the volume of the water body after the pond and promptly adjusts the ore drawing position according to the accumulating condition of the tailings in the water body so as to avoid the formation of dry shoal in the pond, thereby ensuring that the accumulated tailings are always positioned under the water without occupying the flood discharge volume of the tailings pond. Simultaneously, according to the rising condition of the water level in the tailings pond, the transportation volume of the tailings before the dam and after the pond is promptly adjusted so as to ensure the length of the dry shoal of the tailings pond, thereby realizing the moving and balanced ore drawing in the water body after the pond so as to realize that the dispersed ore drawing in sections is adopted before the dam and after the pond.

Description

technical field [0001] The invention relates to a method for filling tailings ponds. Background technique [0002] At present, the stacking methods of tailings dams mainly include upstream method, midline method and downstream method. More than 90% of the tailings ponds in my country use the upstream method to accumulate tailings dams in front of the dam. At present, there are two ways to improve the upstream method of dam construction. One is to change the ore drawing method through double initial dams to enhance the safety of the dam body, and the other is to Extend the service life of tailings ponds, and increase the height and expand the capacity of existing tailings ponds by adopting methods such as changing the upstream method to the center line method, and the reservoir within the reservoir. The upstream dam ore-drawing method generally has a fast rising speed of the dam body, a short consolidation time of the tailings sub-dam, and a high dam wetting line, which has a...

AI Technical Summary

Problems solved by technology

In addition, the midline method and the downstream method also have the problem of low tailings pond filling coefficient. Therefore, it is inevitable to use a new tailings filling technology to develop the current tailings filling method in front of the dam. choose