基于Flac^(3D)的露天转地下开采崩落岩石移动角的确定  

Determination of caved rock displacement angle in the transition from open-pit to underground mining based on Flac^(3D)

作　　者：许宏凯 Xu Hongkai(Shandong Province Metallurgical Engineering Co.,Ltd.)

机构地区：[1]山东省冶金设计院股份有限公司

出　　处：《黄金》2021年第11期53-56,共4页Gold

摘　　要：某露天转地下开采矿山设计采用无底柱分段崩落采矿法开采。为保证矿山的安全生产,减少对地表周围地理和环境产生的影响,采用Flac^(3D)矿业软件,建立矿石回采模型,施加边界条件,分析回采空区弹塑性变化及岩石移动情况,圈定岩石移动范围,确定岩石移动角为65°。模拟结果可为矿山的深部开采与安全生产提供理论支撑。A mine in the transition from open-pit to underground mining is designed to use pillarless sublevel caving mining method.In order to ensure the safe production of mine and reduce the impact on the geography and environment around the surface,an ore extraction model was established with Flac^(3D) mining software,and boundary conditions were introduced.The elastic-plastic changes in the mined-out area and the rock displacement were analyzed.The movement range of the rock was delineated,and the rock displacement angle was determined to be 65°.The simulation results can provide technical support for deep mining and safe production for mines.

关 键 词：岩石移动角 Flac^(3D)矿业软件 无底柱分段崩落采矿法 露天转地下 数值模拟 

分 类 号：TD853.36[矿业工程—金属矿开采]