摘要
湘西金矿2241试验采场的矿体为缓倾斜薄矿脉,拟采用机械化水平分层削壁充填法回采,定向抛掷爆破围岩充填采空区。为了了解回采过程顶板的稳定性,用有限元数值分析方法,模拟采场回采过程,分析其应力、位移变化情况。稳定性分析结果表明:该采矿方法设计合理可行、安全可靠。
In the No.2241 trial production stope, the orebody characters a gentle dip and thin ore vein in Xiangxi Gold Mine.The mechanized horizontal slicing-and-resuing method has been applied in which the wined-out area been backfilled withw allrocks through oriented pin-point blasting.To get an insight into the stope roof stability,the stoping process is simulated by finite element numerical method. The analyses for the stress, displacement and stope stability in the stope shows that this mining method under test is rational and feasible in design, and has good safety and reliability.
关键词
金矿床
采场
试验
有限元
Finite element analysis, Stress, Displacement, Stability
