上向进路充填法进路回采顺序的优化研究  

Optimal Research on the Drift Mining Sequence of Upward Drift Stoping with Backfill

作　　者：张雄天 张国胜 赵永峰 魏亚涛 

机构地区：[1]兰州有色冶金设计研究院有限公司,甘肃兰州730000

出　　处：《矿业研究与开发》2016年第1期5-9,共5页Mining Research and Development

摘　　要：针对白银深部铜矿高应力环境下的深埋矿体,在深入分析采矿方法的基础上,进行了上向进路充填法进路回采顺序的优化研究,提出了适合上向进路充填法的3种合理进路回采顺序,并利用FLAC^(3D)进行数值计算分析。结果表明:3种方案中,一翼向另一翼"隔二采一"的方案,采场顶板应力集中程度最低、位移变化最小,采场稳定性程度最高,即为进路的最优回采顺序。当回采进路开采到第三步骤时,矿房顶板处应力不断积累产生明显应力集中区,此时易出现矿房顶板变形及冒落等事故,需采取相关措施,加强采场顶板的支护工作。Aimed at the deep orebody under high stress in Baiyin Copper Mine, the optimal research on the drift mining sequence of upward drift stoping with backfill was carried out based on the in-depth analysis of mining method. Then, three kinds of reasonable mining sequences were proposed and analyzed by FLAC3D. The results showed that the mining sequence of ＂taking two every the Other one＂ from one side to another side was the optimum, which had the minimum stress concentration and displacement change in stope roof, as well as the best stability in stope. As the drift mining in the third step, the stress in stope roof would accumulate constantly and produce the obvious stress concentration area. At this moment, it was easy to occur deformation and caving in stope roof, which need to take relevant measures for strengthening the support of stope roof.

关 键 词：深部矿体 上向进路充填采矿法 回采顺序 围岩稳定性 

分 类 号：TD853.34[矿业工程—金属矿开采]