基于FLAC^(3D)稳定性分析的仓上金矿挂帮矿开采  

Stability Analysis on the Mining of Hanging-wall Ore in Cangshang Gold Mine Based on FLAC^(3D)

作　　者：黄萍[1] 杨鹏[1] 崔明[1] 梁乃跃[1] 

机构地区：[1]北京科技大学土木与环境工程学院

出　　处：《金属矿山》2012年第4期16-18,35,共4页Metal Mine

基　　金："十一五"国家科技支撑计划项目(编号:2007BAB18B02)

摘　　要：应用FLAC3D程序对仓上金矿-170 m中段开采过程进行数值模拟,分析了矿柱、顶板的应力应变规律及露天边坡的沉降情况。在模拟过程中,通过记录矿块顶板中点位移和模型最大不平衡力2项指标来验证矿块结构是否稳定。结果表明矿块中点位移在允许的范围内,模型最大不平衡力最终趋于0,验证了采用上向水平进路充填采矿法开采是安全的,并确定了合理的开采顺序。研究成果为在复杂地质条件下实现安全回收挂帮矿,同时保护农田、村庄提供了一种简捷、有效的技术保障。The mining process of-170 m middle section was simulated by FLAC3D,and it calculated the stress and strain of the ore pillars and roof,and the subsidence of open slope.In the process of simulation,the stability of the ore block was analyzed by tailing after the displacement of roof midpoint and the max unbalance force.The numerical results show that the displacement of the ore midpoint is in allowing range and the max unbalance force ultimately tends to 0,which verifies that the method of drift cut-and-fill stoping is safe and the best mining sequence is determined.It brings a simple and efficient technical support to recover hanging-wall ore safely on complicated geological condition,while protecting the village and farmland.

关 键 词：数值模拟 稳定性 边坡 开采沉降 

分 类 号：TD862.1[矿业工程—金属矿开采]