摘要
为实现提前达产,某地下开采生产矿山采用上下两个中段(-130m和-410m)同时回采,其中上部中段(-130m中段)采用分段空场法回采,采空区由废石或非胶结尾砂充填处理。为保证下部中段回采的安全稳定,需在充填体下方留设一定厚度的顶柱。作者通过理论分析计算及数值计算相结合的方式对安全顶柱厚度进行预测研究,为保障下中段回采的安全性、提高资源回收率及有效控制地压提供技术支撑。
In order to realize the production achivement in advance,two middle sections produce at the same time,which height are-130 mand-410 m.And sublevel open stoping method is applied in the upper middle section which height is-130 m,and the goaf is filled with waste rock and uncemented tailings.In order to ensure the safety and stability of lower middle mining,the top pillar with a certain thickness under the filling body is needed.The author do some predictive studies about thickness of safety pillar through theoretical analysis and calculation and numerical calculation in order to provide the technical support of ensuring the safety of middle lower extraction,and improving resource recovery,and effectively controlling the ground pressure.
出处
《有色金属（矿山部分）》
2018年第1期24-28,39,共6页
NONFERROUS METALS(Mining Section）
关键词
非胶结充填体
安全顶柱
理论分析
数值计算
non-cemented filling body
safety pillar
theoretical analysis
numerical calculation
