关键词: 充填采矿, 盘区矿柱, 回采顺序, 采场稳定性, 数值模拟

Abstract: Based on the present mining situation that a metallic ore under the large-scale backfill body has been mined for a long period of time，numerical simulation on the stability of the stope during mining process at -300 m of each panel zone was made to analyze the changing rules of the roof stress，displacement and other indicators during mining process and comprehensively compare the recovery safety and economic benefits of each program.The results show that：when E101 stope is considered as a permanent consecutive penal pillar，the maximum tensile stress of 1.14 MPa and maximum displacement of 75 mm are generated at roof in the middle period；the maximum tensile stress of 2.30 MPa and maximum displacement of 92 mm are generated at the end of mining，meanwhile the roof tensile safety factor is 1.53.The entire roof rock stability is good，so E101 panel is determined as the permanent pillar.According to the position of the permanent penal pillar，four panel stoping sequences are proposed.After comparing the roof stability，immediate roof，wall and backfill of different mining plan，the mining sequence from the permanent pillar stopes E101ly extending to two side is determined.

Key words: Filling mining, Panel pillar, Mining sequence, Stope stability, Numerical simulation