关于疆锋铁矿矿体开采离散元数值模拟研究

Research on Discrete Element Numerical Simulation of Orebody Mining in Jiangfeng Iron Mine

在矿体回采过程中,不同的回采方案及开采深度对上部围岩、周边矿岩体和地表的影响程度如何,是一项重要的研究工作。因此,利用离散元软件对疆锋铁矿Ⅱ号矿段崩落法的采矿条件下,不同采矿深度上盘围岩的冒落现象以及对周边岩层的影响进行数值模拟研究,结果表明离散元数值模拟方法切实可行,符合岩石力学基本规律,在空场条件下,II号矿段的开采会引发上部围岩的大范围冒落。

In the process of ore body mining,it is an important research work to determine the impact of different mining plans and depths on the upper surrounding rock,surrounding rock and surface.Therefore,the discrete element software is used to analyze the mining conditions of the caving method in the II ore block of Jiangfeng Iron Mine.The caving phenomenon of hanging wall rock at different mining depths and the impact on surrounding rock strata are studied by numercial simulation.The results show that the discrete element numerical simulation method is feasible and conforms to the basic laws of Rock mechanics.Under the open field conditions,the mining of II ore block will lead to large-scale caving of upper wall rock.