Strip block recovering method of metallic ore body level pillars

The invention discloses a strip block recovering method of metallic ore body level pillars. The strip block recovering method disclosed by the invention has the beneficial effects that a strip block method is adopted for recovering level pillars; the up-and-down border of the ore body can be favorably controlled for mining engineering; the dilution ratio is low; the thickness of the level pillarsis small; layered recovering is adopted to control the hollow height, so that the safety is good; no secondary ore pillars are arranged between a recovering unit and the strip block, so that the lossrate is low; and the character of layering of the level pillars is utilized, and different strip block width is adopted, so that efficiency and security are both taken into account, and the effect isgood. 本发明公开了金属矿体水平矿柱的条块回采方法，本发明的有益效果是采用条块法回采水平矿柱，采矿工程能够良好的控制矿体上下边界，贫化率低；水平矿柱的厚度较小，采用分层回采，控制空顶高度，安全性好；回采单元和条块间不留二次矿柱，损失率小；利用水平矿柱分层的特点，采用不同的条块宽度，兼顾效率与安全，效果良好。