金属矿山多矿柱承载与失稳破坏研究  

Review of bearing and instability of multi-pillar in metal mines

作　　者：朱万成[1] 董航宇 刘溪鸽 牛雷雷[1] 代风 关凯[1] ZHU Wancheng;DONG Hangyu;LIU Xige;NIU Leilei;DAI Feng;GUAN Kai(Center for Rock Instability and Seismicity Research,School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学资源与土木工程学院岩石破裂与失稳研究所,辽宁沈阳110819

出　　处：《采矿与岩层控制工程学报》2022年第4期1-27,共27页Journal of Mining and Strata Control Engineering

基　　金：国家自然科学基金面上资助项目(51874069);国家自然科学基金联合基金资助项目(U1906208);国家“万人计划”科技创新领军人才配套资助项目(W03020232)。

摘　　要：金属矿空场法开采遗留了大量采空区,尤其是近地表的采空区群具有重大的安全隐患,是矿山安全的危险源之一。采空区的稳定性与矿柱的承载及失稳破坏密切相关,在采空区垮塌过程中,多个矿柱间的载荷传递效应可能诱发相邻矿柱的连锁性失稳破坏,从而造成采空区群大规模失稳坍塌。因此对单矿柱稳定性研究方法、多矿柱载荷传递行为及失稳破坏机制等进行了归纳总结,相关研究成果表明:当前针对多矿柱载荷传递行为的相关研究较少,载荷传递机制尚不清楚,难以实现对多矿柱连锁性失稳破坏行为的预测;应该着眼于矿柱之间以及多矿柱与围岩体之间的相互作用,以便于深刻揭示多矿柱系统的承载与失稳破坏机制。介绍了多矿柱承载与失稳破坏机制方面的相关研究成果,可以为防控大规模空区群失稳灾害提供参考。A large number of goaf have been left behind by open-stope mining of metal mines,especially the near surface goaf group,which has been one of the most dangerous sources of mine safety.The goaf stability is closely related to the bearing capacity and unstable failure of pillars.The load transfer effect may induce the cascading pillar failure(CPF)of multi-pillar and the collapse of goaf group.This paper reviews the stability evaluation of single-pillar,load transfer and instability mechanism of multi-pillar.The review shows that,few studies focus on the prediction of cascading pillar failure and the load transfer mechanism of multi-pillar.Attention should be paid to the interaction between pillars and surrounding rockmass,so as to reveal the bearing and instability mechanism of the multi-pillar system.The relevant researches of our group about the instability mechanism of the multi-pillar system were introduced in this paper,which can provide references for the prevention and control of large-scale goaf group instability disaster.

关 键 词：采空区群 多矿柱 相互作用 载荷传递 失稳破坏 

分 类 号：TD315[矿业工程—矿井建设] TU452[建筑科学—岩土工程]