(1) The subsection mining method is also a kind of empty field mining method. It is divided into several sections along the vertical direction of the ore block on the basis of dividing the ore block, and the mine room is arranged at each level of the section. And the ore, the ore collected in each section, is transported from the miner's roadway of each section. That is to say, each section is rocked and mined. Each distribution of the segmentation method is a separate recovery unit. ※ Sectional rock drilling and section mining.
(2) After the mining of the mining section of the subsection method, the pillars of this section can be immediately recovered (top pillar and inter-column) and the goaf can be treated at the same time.
(2) After the mining of the mining section of the subsection method, the pillars of this section can be immediately recovered (top pillar and inter-column) and the goaf can be treated at the same time.
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