玲珑金矿东风矿区深部缓倾斜矿体回采顺序优化

Optimization of Mining Sequence for Deep Gently Inclined Orebody in Dongfeng Mining Area of Linglong Gold Mine

玲珑金矿东风矿区原采用盘区中深孔分段出矿采矿法回采,但由于矿体倾角变缓、开采深度增加和开采规模扩大,已不能满足生产要求。在充填系统建成后,东风矿区全部采用上向水平分层进路式充填采矿法。为探求合理的回采顺序,运用FLAC3D软件对不同回采方案进行模拟,分析采场在不同回采顺序下压应力、拉应力、垂直位移和塑性区等特征,得出最优的回采顺序方案。模拟结果表明,使用隔一采一、采完之后进行充填、最后2条采场和穿脉同时充填的开采顺序最优。

In Dongfeng mining area of Linglong Gold Mine,the medium and deep hole sublevel mining method was originally used.However,due to the slow inclination of ore body,the increase of mining depth and the expansion of mining scale,it cannot meet the production requirements.After the completion of the filling system,the Dongfeng mining area all adopts the upward horizontal layered filling mining method.In order to explore the reasonable stoping sequence of stope,FLAC^(3D) software was used to simulate different stoping schemes,the characteristics of compressive stress,tensile stress,vertical displacement and plastic zone of stope under different stoping sequences were analyzed,and the optimal stoping sequence scheme was obtained.The simulation results show that the mining sequence with one stoping and one stoping,filling after mining,and simultaneous filling of the last two stopes and veins is the best.