复杂空区群条件下矿柱安全回收技术研究  

Study on the Safe Recovery Technique of Pillars of Complicated Multi-layer Goafs

作　　者：叶光祥 王柳[1] 张树标[1] 姜永恒[2] 叶际寰 

机构地区：[1]赣州有色冶金研究所采矿研究室,江西赣州341000 [2]长春黄金研究院,吉林长春130012 [3]江西下垄钨业有限公司,江西大余341518

出　　处：《金属矿山》2017年第6期61-65,共5页Metal Mine

摘　　要：为了最大限度回收某铁锌多金属矿复杂空区群条件下的矿柱资源,以该矿区三中段以上矿体为研究对象,根据矿柱开采技术条件,结合矿区采空区实体模型,制定了充填法处理采空区和空场嗣后充填法回收矿柱的技术方案,并利用FLAC3D软件对矿柱回收过程中应力应变和地表沉降进行模拟分析。结果表明:矿柱回收过程中,岩体应力发生转移,围岩和充填体受压,顶板受拉。同时,为减少矿柱回收过程中的地表沉降,提出以不回收一中段矿柱为主,在关键部位预留少量原岩矿柱为辅的保护措施,以保证覆岩及地表的稳定性。In order to effectively recovery of pillars resources in an iron-zinc polymetallic deposit under the condition of complex multi-latyer goafs,taking the the upper ore-bodies of the three section of the mining area as the study example,according to mining technical condition and the solid model of goaf of the mining area,the technical scheme for processing the goafs and recovery the pillars by using filling method and open-stope subsequent filling method respectively is proposed. The stressstain and ground subsidence during the recovery process of pillars are simulated and analyzed by using FLAC3 Dsoftware. The results show that：（1）during the process of pillars recovery,the rock stress is transferred,the surrounding rock and the filling body are compressed,and the roof is pulled. Besides that,in order to reduce ground subsidence caused the pillars recovery,the protection measures mainly for not mining the pillars of the first section,and secondly for reserving small amount of raw pillars in the key areas is put forward.

关 键 词：采空区处理 矿柱回收 采矿方法 数值模拟 

分 类 号：TD853.391[矿业工程—金属矿开采]