Underground mining process without building tailings pond

Abstract

The invention relates to an underground mining process without building a tailing pond. The underground mining process comprises the following steps: counting total tailing quantity data generated ina mining area and residual tailing quantity data after a goaf is filled; planning and selecting a gravel aggregate material field within a preset range of the mining area, and the formed empty area meeting the storage requirement for the remaining tailing amount; mining ores and waste rocks in the mining area, and sorting the ores to generate concentrates and tailings; crushing waste rocks produced by mining and waste rocks produced by sorting, and screening the crushed materials according to a preset size to form gravel aggregates and screening residues; and filling the tailings or the screened residues into the goaf. After the ores and waste rocks are mined, the goaf for containing tailings is formed, and the size of the goaf meets the storage requirements of tailings generated by ore sorting and needed cementing materials. An enough empty area is formed to fill tailings generated after mineral separation into a well, the tailing pond is not arranged on the ground surface, tailing-free mines are truly achieved, sand aggregate can be sold, and environmental protection and national economy construction are facilitated.

Description

technical field [0001] The invention relates to an underground mine mining technology that does not need to build a tailing pool, and belongs to the technical field of mining. Background technique [0002] Ore can be divided into metallic ore and non-metallic ore according to the nature of the elements contained. Metals are usually divided into two categories: ferrous metals and non-ferrous metals. Except for iron, manganese, and chromium, the existing 83 kinds of metals are called non-ferrous metals, including heavy non-ferrous metals, light metals, precious metals, rare metals, etc. Common ferrous metal ores include iron ore, and non-ferrous metals can be divided into heavy metals (such as copper, lead, zinc), light metals (such as aluminum, magnesium), precious metals (such as gold, silver, platinum) and rare metals (such as tungsten, molybdenum, germanium, lithium, lanthanum, uranium). The raw ore grade of general iron ore (ore grade refers to the content of useful co...

AI Technical Summary

Problems solved by technology

For new tailings ponds, reconstruction and expansion of tailings ponds, the regulatory authorities will not approve the construction of tailings ponds "overhead ponds". In addition, tailings ponds occupy a large area and land use indicators are difficult to approve. There is nowhere to build, which leads to the inability to build mines; some existing mines are under pressure to stop production due to the inability to heighten, expand or build new tailings ponds

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