A mining-filling combined with continuous mining mining method in stage mines

Abstract

The invention relates to a mining-filling combined continuous mining sublevel room mining method. The method comprises dividing a mining zone to be mined into multiple mining sections, orderly carrying out stoping on the mining sections from bottom to top through a sublevel room mining method, and in stoping, simultaneously, filling goafs with a mixed filling material of waste surrounding rock produced through drilling and blasting in the previous mining stage and mortar until mining and filling processes are finished in the whole mining zone to be mined. In mining through the sublevel room mining method, stoping and filling are combined and are carried out simultaneously so that mining continuity is realized, a mining production capacity is improved, mining safety is guaranteed, waste stones produced through mining are fully used and an ore loss and dilution rate is reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of mining, in particular to a stage mining method in which mining and charging are combined with continuous mining. 【Background technique】 [0002] Since the 1980s, more than 55% of large and medium-sized mines in my country have been mined using the stage mining method. The first step is to return to the mining room, and the second step is to return to the mining pillar. When returning to mining, the stope exists in the form of a goaf, and the stope only relies on the strength of the ore pillar and surrounding rock itself for support and maintenance. Although the stage mining method has the advantages of large production capacity, high mining efficiency, and simple mining process structure, but with the continuous advancement of mining work, the goaf formed in the stope will become larger and larger, which will affect the ground. The management and control of pressure may cause different degrees of surfac...

AI Technical Summary

Problems solved by technology

Although the stage mining method has the advantages of large production capacity, high mining efficiency, and simple mining process structure, but with the continuous advancement of mining work, the goaf formed in the stope will become larger and larger, which will affect the ground. The management and control of pressure may cause different degrees of surface subsidence and subsidence. Subsidence will bring serious threats to the environment of the mining area and the safety of industrial and agricultural production in the mining area. The dilution rate increases, and the ventilation environment of the stope becomes poor

[0003] As the country pays more and more attention to the environment and safety of mining areas, it is a new development trend of mining to combine the stage mine mining method and filling mining method to realize continuous mining of mines. There is still a production capacity in mining by simply using the filling mining method Small size, low recovery rate, complex recovery process structure, high labor intensity and other defect technologies are not suitable for the mining of thick and large ore bodies. Only the characteristics of stage mine mining method and filling mining method can be fully combined according to the actual conditions of the mine. Only in this way can the continuous mining of mines be realized, the capacity of mine production can be improved, and the safety of mine production can be guaranteed.

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