左岸金矿破碎区域上向进路式开采结构参数研究

Study on the Structural Parameters of Upward-facing Mining in Droken Zone of Zuoan Gold Mine

奥同克有限责任公司左岸金矿矿体品位较高,但矿岩较为破碎,矿区构造断裂纵横交错,矿岩稳固性欠佳导致矿体开采难度较大。针对目前该金矿较破碎区域采用上向进路法开采,为了提高采矿效率,研究探索大断面进路回采安全性十分必要。运用MIDAS/GTS建立研究对象的三维数字几何模型与网格划分,再导入FLAC^3D软件中,完成3种不同尺寸的进路巷道开挖计算分析,最终确定出安全可行的进路断面尺寸为4 m×4 m。

The ore body of the Zuoan Gold Mine of Otenko Co.,Ltd.is of high grade,but the ore rock is relatively broken,and the structure faults crisscross the mine area.The rock stability is not good,which leads to the difficulty of mining the ore body.At present,the gold mine adopts the upside-down approach for mining in relatively fractured areas,in order to improve mining efficiency,it is a trend to study and explore the safety of large section approach.Midas/GTS is used to establish the 3D digital geometric model and grid division of the research object,and then it is imported into FLAC^3D software to complete the calculation and analysis of three different sizes of roadway excavation.The safe and feasible approach section size was finally determined to be 4 m×4 m.