Seepage draining method for fine-grained tailing pond, seepage draining system and application

Abstract

The invention provides a seepage draining method for a fine-grained tailing pond, a seepage draining system and application, and relates to the technical field of tailing treatment. According to the seepage draining method, a seepage draining area is defined on the beach surface of the tailing pond through adopting a floating body, a base layer and a sand wall are formed in the seepage draining area through using deposition and solidification of coarse tailings, a seepage draining body is arranged in the sand wall, and the permeability coefficient of the coarse tailings is higher than the permeability coefficient of fine tailings, so that moisture in the coarse tailings enters a water guide pipe along the seepage draining body firstly and then flows to a sub-dam drainage ditch to be drained; and a large amount of moisture is contained in the fine tailings outside the seepage draining area, the moisture in the fine tailings is gradually gathered in the seepage draining area and enters the seepage draining body along with the difference of pore water pressure inside and outside the seepage draining area, the coarse tailing sand wall is used for reversely filtering the fine tailings,and the seepage draining body is used for reversely filtering the coarse tailings, so that the seepage draining body is not easy to block by the fine tailings, seepage draining of the fine tailings isrealized, the seepage draining area and the seepage slope of a dam body are increased, and the seepage draining efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of tailings treatment, and in particular relates to a seepage discharge method, a seepage discharge system and an application of a fine-grained tailings reservoir. Background technique [0002] At present, there are more and more fine-grained tailings entering the tailings pond in my country, and they are widely found in copper ore, gold ore, lead-zinc ore, alumina ore, phosphate rock and other fields. The stockpiling of fine tailings has become a difficult problem faced by many mining enterprises. This is mainly due to the small permeability coefficient of fine-grained tailings, poor water permeability, and long consolidation time. Compared with general tailings dams, fine-grained tailings dams require a longer time for drainage and consolidation in the lower dam body, which is often difficult Meet production needs. Moreover, the infiltration line of fine-grained tailings accumulation dams is generally hi...

AI Technical Summary

Problems solved by technology

When the particle size of the tailings is too fine, the geosynthetics reverse filter fine tailings are prone to clogging, and it is difficult to achieve the expected drainage effect

And for fine-grained tailings ponds, dry beaches often have gentle slopes and weak beach surfaces, and most of the seepage bodies in front of the dam are arranged in a small area in front of the dam that meets the construction bearing capacity requirements. For the entire tailings dam body, seepage drainage The effect is limited, and it is difficult to accelerate the consolidation of fine-grained tailings in the reservoir and control the seepage line of the dam body

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