空场嗣后充填法充填体力学作用过程及控制效果分析  

Analysis on process and control effect of filling body mechanical action for open stoping with delayed filling mining method

作　　者：于世波[1] 董凯程[1] 苏逢彬 李欣[1] 薛杉杉[1] 

机构地区：[1]北京矿冶研究总院,北京100160 [2]山东省冶金设计院股份有限公司,济南250101

出　　处：《有色金属（矿山部分）》2013年第3期13-16,共4页NONFERROUS METALS(Mining Section）

基　　金："十二五"国家科技支撑计划项目(2012BAB01B01)

摘　　要：以某铁矿-230～-290m中段的实际工程为依托,采用数值模拟的方法,分析了大直径深孔阶段空场嗣后充填法中充填体力学作用过程及控制效果。研究结果表明,胶结充填体只有被挤压才能发挥出对围岩的支护抗力,胶结充填和废石充填能够有效控制覆岩移动变形,变形主要发生在矿柱回采阶段,地压总体显现不明显。Based on --230--290 m middle section engineering at an iron mine, the mechanical action process and control effect of filling body for large-diameter long-hole sublevel open stoping with delayed filling mining method is analyzed by numerical simulation. The result indicates that the cement filling body displays support resistance to the surrounding rock only when being squeezed. Strata mo-~ement can be eom^o~!.ed effect^-~e^y by cement ~i^ling body and waste and its deformation mainly occurs in the stage of mining pillar. In general, ground pressure is stable.

关 键 词：充填体 力学作用 控制效果 数值模拟 

分 类 号：TD853.34[矿业工程—金属矿开采]