刚果(金)某铜钴矿深部复杂矿体采场结构参数研究

为了得到刚果(金)某铜钴矿深部矿体采场最优矿房宽度、地表危险范围与岩层移动角，采用数值模拟软件MIDAS-GTS/NX建立了不同矿房宽度的三维精细化模型，得到了地表位移、矿房应力与塑性区分布，采用数值模拟研究了地表危险范围与岩层移动角。结果表明，依据地表位移、矿房最大主应力、最小主应力和矿房塑性区，判定矿房最优宽度为18 m左右; 比较了3种矿房宽度条件下的地表危险范围，以采场宽度18 m开采深部矿体产生的地表移动危险变形较为合理; 依据数值分析结果，岩层移动角推荐73°～82°。研究成果可为矿山安全生产提供参考。

Stope Structural Parameters for a Complex Deep Orebody of Copper-Cobalt Mine in Congo (Kinshasa)

In order to obtain the optimal stope room width, surface danger zone and strata movement angle for a copper-cobalt mine in Congo (Kinshasa), a three-dimensional refined model with different room widths was established by using numerical simulation software MIDAS-GTS/NX, by which the surface displacement, room stress and plastic zone distribution were obtained. And the surface danger zone and strata movement angle were studied by numerical simulation. As a result, the optimal width of the mine room was determined to be about 18 m according to the surface displacement, the maximum and minimum principal stress, and the plastic zone of the mine room. It is found that the surface displacement caused by deep orebody mining at the stope with room width of 18 m can be more reasonable based on the comparison of the surface danger zones for the mine room with three different widths. It is recommended that the strata movement angle should be within the range of 73° to 82° according to the numerical analysis results. This research can be of reference for mines' safe production.