针对倾斜矿体无底柱分段崩落法所存在的矿石贫化大、损失率高等问题,分析指出,其主要原因在于矿山对于倾斜矿体的特殊性认识不到位,没有采取有针对性的回采方案,通过加大下盘崩矿步距,优化不同区段边孔角以及利用辅助进路回采下盘残留矿石等技术方案,最终使得矿山贫化率从36.2%降低至30.3%,回收率从57.1%提升至70.2%,大大提高了矿山的经济效益。 Aiming at the problems such as large ore depletion rate and high loss rate in the sill-pillar-free subsided caving method of inclined orebody, it is pointed out that the main reason is that mine is not aware of the peculiarities of inclined orebody and has not taken targeted mining Program, by increasing the next plate collapse step, optimize the different sections of the edge of the hole and the use of auxiliary access to the bottom of the remaining ore mining and other technical solutions, and ultimately reduce the mine rate from 36.2% to 30.3%, the recovery rate from 57.1% to 70.2%, greatly improving the economic benefits of mines.