小包山铁矿残矿回收方案设计

Design of the Residual Ore Recycling Scheme of Xiaobaoshan Iron Mine

小包山铁矿长期以来采用房柱采矿法开采,残矿量较大,资源浪费较为严重。为了节省资源,开展残矿的二次利用,通过回采可行性分析研究,确定了东部矿体"露天凿岩爆破、露天出矿"的回采方案,将削坡的岩石和充填采空区;露头矿体采用露天开采回收,未露头矿体采取露天凿岩爆破至井下-50 m装车回收,有效回收矿石9.2万t,创收2 806.41万元,解决了资源回收安全问题,实现了经济、社会效益双赢。

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 × 10~4 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.