摘要
本文以理论研究为基础,密切结合生产实际,采用沿倾斜后退式回采顺序和楔管式锚杆护顶技术,使采空区允许暴露面积只有50m^2左右,扩大到258～500m^2,大幅度地降低了矿石损失与贫化,获得显著的经济效益。
The employment of dip retreat and wedge pipe bolt for roof support showed that the permissible exposed area of mine goaf increased from 50m2 to 258-500m2, thus greatly reduced the ore loss and dilution. On the basis of theoretical study and in close combination with operation practice, this paper come to a conclussion that a marked benefit can be acquired by the employment of this method.
出处
《黄金》
CAS
北大核心
1992年第10期18-23,共6页
Gold
关键词
金矿床
采矿方法
研究
dip retreat
wedge pipe bolt for roof support
boundary element method
unstable sphere
