关键词: 残矿回收, 浅孔凿岩爆破, 削坡, 充填

Abstract: The room and pillar mining method is used in Xiaobaoshan iron mine for a long time, which results in large quantity residual ore, so, the waste phenomenon of iron ore is serious. In order to save the iron ore resources and recycle the residual ore, the stopping scheme of the eastern ore-bodies is determined by analyzing the feasibility of stoping. The basic idea of the scheme is the drilling, blasting and ore transportation are conducted in the open air, the mined-out area can be filled effectively by using the rock caused by cutting slope; open-pit mining method is used to deal with the outcrop ore-bodies, while the mining of remaining ore-bodies can be conducted by using open-pit drilling and blasting method, the ores can be recycled by automobile transportation way in -50 m level. The results show that the ore can be recycled about 9.2×104 t, the economic benefits is about 28064 1 million yuan, the safety of recycling of the residual ore in Xiaobaoshan iron mine is realized, the social benefits and economical benefits are both obtained.

Key words: Residual ore recycling, Shallow hole drilling and blasting, Cut slope, Filling