高陡边坡挂帮矿开采方法研究

Mining Method for High and Steep Slope Hanging Wall Ore

露天开采结束后,残留在露天境界周围挂帮矿量占开采总储量的5%～16%,为回收矿石,可能得在高陡边坡上对这部分挂帮矿过程进行开采。但在开采过程中如何形成新条件下的生产系统,如何确保在开采挂帮矿期间采矿作业安全和边坡稳定是亟等解决的问题。针对大冶铁矿2#挂帮矿开采实际,介绍了它的开采方法,并提出了在开采过程中应注意的安全问题,重点讨论了减震控制爆破技术和边坡变形监测。

The hanging wall ore around the boundary of open pit after the completion of open - pit miming accounts for 5% ～16% of the total ore reserve. To recover this part of ore, mining with high and steep slope may have to be used. For this, how to form the production system under the new conditions and how to ensure the safety production and the slope stability in mining the hanging wall ore would be the pressing problems that need to be solved. The paper describes the method used in the practical mining of No. 2 hanging wall ore in Daye Iron Mine, points out the safety problems needing attention and focuses on the discussion of the shock absorption control blasting and slope deformation monitoring.