铀矿床破碎矿体深孔成孔技术试验研究  

Drilling Technology of Deep Borehole in the Fractured Uranium Orebody

作　　者：张德全[1] 张煜晖 寇子顺[1] ZHANG Dequan;ZHANG Yuhui;KOU Zishun(Beijing Research Institute of Chemical Engineering and Metallurgy,CNNC,Beijing 101149,China)

机构地区：[1]核工业北京化工冶金研究院,北京101149

出　　处：《铀矿冶》2021年第2期95-101,共7页Uranium Mining and Metallurgy

摘　　要：某铀矿床破碎矿体稳定性差,脉内巷道围岩不稳定,炮孔施工难度大,难以采用矿床现有采矿方法进行生产。为了实现破碎矿体分段深孔连续开采,通过分析钻孔变形破坏形式及其影响因素,并建立破碎矿体钻孔变形破坏分析数值模型,分析钻孔周围矿岩应力、位移及破坏分布特征,制定了成孔控制措施并进行现场试验,形成了破碎矿体深孔成孔控制技术。It is difficult to adopt the existing mining method to produce in a uranium mine,because of the instability of fractured orebody,which will cause the unstable of surrounding rock of tunnel and makes drilling difficult and affect the blasting mining effect.The distribution characteristics of stress,displacement and failure around the borehole were analyzed,by analyzing the deformation and failure form of borehole and its influencing factors,and building a numerical model for borehole deformation and failure analysis of orebody.Then the control measures were developed and the field experiment were conducted,the technology of controlling the formation of medium and deep hole in orebody was formed.

关 键 词：破碎矿体 成孔技术 数值模拟 现场试验 

分 类 号：TD868[矿业工程—金属矿开采]