安庆铜矿深部破碎矿体开采研究

Study on Mining of Deep Fractured Ore Body in Anqing Cooper Mine

深部采矿面临地压活动强烈、矿岩破碎、稳定性差等诸多难题。针对安庆铜矿22#采场矿体赋存较深,且破碎的特点,分析采用上向水平分层充填采矿法进行开采的技术解决方案,提出将采场划分为3部分并按先后顺序呈阶梯状推进的合理回采及充填措施。矿山实践结果表明,阶梯推进和采后及时充填能有效维护采场稳定,充分回收矿产资源,确保矿山安全高效生产。

For deep mining, many complex problems may con- cur, such as strong ground pressure activities, fractured ore/rock and poor stability of ore/rock. The No. 22 ore body is deep - buried and fractured in Anqing cooper mine, so a technical solu- tion of upward horizontal cut -and- fill method has been put forward,the stope is divided into three parts,of which mining is advanced in benches and a certain order,and the mined -out ar- ea is filled in time. The practice in this mine indicated that bench mining and timely filling after mining can effectively keep the stope stable, achieve the full recovery of mineral resources, and assure safe and highly efficient mining.