Filling body for goaf in deep metal mine, filling method and system thereof

Abstract

The invention discloses a filling body for deep well metal mine goaf and a filling method and system thereof. The filling body is prepared by mixing milltailings, throwing tailings and water in a proportion of 2.75-3:0.75-1:1 calculated by weight, and 0.25 part of cement can further be added according to needs. The raw materials needed are obtained according to the proportion, and then the raw materials are evenly mixed, and then filled in the goaf. According to the scheme, the percentage recovery of mineral resources can be improved by the utilization of the throwing tailings and the milltailings, the safety and environment protection problems of the discharging of the milltailings and the stacking of the throwing tailings of a metal mine are solved, meanwhile, the occurrence of mountainous area mine geological disasters can be effectively controlled, and the filling body for the deep well metal mine goaf and the filling method and system thereof are a strategic new technology of 'mining with no waste, cyclic development' in modern mining industry.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a filling body for goafs in deep metal mines made of solid waste from mines, and a filling method and system thereof. Background technique [0002] 1. Potential safety hazards in gobs are becoming more and more serious [0003] With the gradual reduction and depletion of surface and shallow resources, mining of mineral resources has gradually shifted from shallow to deep. With the increase of mining depth, the characteristics of "three highs" are gradually intensified, the mine pressure is strong, and the displacement of the roadway increases significantly, resulting in an increase in the risk of rock burst, and the scope of surface geological disasters caused by the impact of mining on the surface of the mining area is expanded. As a result, potential major safety hazards in goafs have increased. [0004] 2. The safety and environmental protection problems of solid ...

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Problems solved by technology

[0010] The purpose of the present invention is to address the above problems, to provide a filling body for goafs in deep metal mines and its filling method and system, which can solve the problems of safety and environmental protection caused by traditional dumping of tailings on the surface and discharge of tailings. In particular, some cement can be added to the filling body. After filling the underground goaf, it has a certain strength, which can effectively prevent the surface subsidence of the mining area and reduce disasters.

[0012] The filling body can consume a large amount of tailings and tailings, and fill them into the goaf underground to reduce the surface discharge of mine tailings and tailings, which can solve the problem of traditional dumping of tailings and tailings Occupation of land, potential safety hazards, environmental pollution and other issues caused by

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