In a super-scale and deep mine,the ore body is extremely thick and large.Extra large strip ore pillars are arranged between the panels.In this paper,the numerical simulation method is used to conduct a comparative study on the stress characteristics and plastic zone distribution of different de-stress schemes applied on the strip pillar.The effect of different de-stress schemes was revealed.A recovery method of strip ore pillar is put forward,which is"the first step:drift de-stress stoping;the second step:medium-long hole or long hole stoping with backfilling".Its results can provide reference for de-stress mining under similar mining conditions.
关键词
深井开采/条形矿柱/卸压开采/数值模拟
Key words
deep mining/strip pillar/de-stress mining/numerical simulation
维普
万方数据