眼前山铁矿露天转井下采矿方法研究

Research on Mining Method of Yanqianshan Iron Mine in Transition from Open-Pit to Underground Mining

结合鞍钢集团鞍山矿业公司眼前山铁矿露天转井下生产的需要,根据眼前山铁矿的矿体赋存条件和矿岩特性,提出了眼前山铁矿露天转地下生产中应该注意的覆盖层厚度及挂帮资源回收的2个主要问题,并对可能采用的3种地下开采的采矿方法(无底柱分段崩落法、VCR法和自然崩落法)进行了分析和探讨,对眼前山铁矿露天转地下生产具有一定的指导意义。

In light of the demand of the production transition from open pit to underground mining at Yanqianshan Iron Mine,AnSteel Group＇s Anshan Mining Co,and its orebody occurrence conditions and ore-rock characteristics,the authors points out two main issues that should be paid attention to in the production during the transition period,namely,the overlying layer thickness and the recovery of wall hanging resource,and analyze and discuss three possible underground mining methods,which can be of some guidance significance to the production during the transition.