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大冶铁矿采空区稳定性模拟分析
引用本文:申超霞,宋园园,王如坤,梅甫定. 大冶铁矿采空区稳定性模拟分析[J]. 金属矿山, 2014, 43(6): 46-49
作者姓名:申超霞  宋园园  王如坤  梅甫定
作者单位:中国地质大学(武汉)工程学院,湖北 武汉 430074
摘    要:为了回收采空区矿柱,以大冶铁矿采空区充填体为例,根据Mohr-Coulomb材料变形模型,建立了采空区应力数值分析模型,模拟了充填前后采空区的应力变化及塑性区的分布情况,通过两者的对比得出充填前后采空区的稳定性结果。研究证明采用充填法对采空区进行处理,不仅改善了采空区应力的作用,还缩小了矿体内的塑性区域,很大程度上提高了采空区的稳定性。

关 键 词:采空区稳定性  充填  Mohr-Coulomb模型  数值分析  

Simulation Analysis of Mined-out Area Stability in Daye Iron Mine
Shen Chaoxia,Song Yuanyuan,Wang Rukun,Mei Fuding. Simulation Analysis of Mined-out Area Stability in Daye Iron Mine[J]. Metal Mine, 2014, 43(6): 46-49
Authors:Shen Chaoxia  Song Yuanyuan  Wang Rukun  Mei Fuding
Affiliation:Faculty of Engineering,China University of Geosciences (Wuhan),Wuhan 430074,China
Abstract:In order to recover the ore pillars in mined-out area,and taking filling body of mined-out area in Daye Iron Mine as a case,the stress analysis model of the mined-out area is built,based on Mohr-Coulomb material deformation model.The stress variation and the distribution of plastic zone in the mined-out area before and after filling are simulated to obtain the stability of the mined-out area through the contrast.The study shows that filling the mined-out area can not only improve stress action in the mined-out area,but also shorten its plastic zone.To a large extent,backfilling improves the stoping stability of the mined-out area.
Keywords:Stability of mined-out area  Filling  Mohr-Coulomb model  Numerical analysis
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