矸石充填体压缩率对充填效果影响的数值模拟  

Numerical Simulation On the Backfilling Effect by Compression Rate of Gangue Backfilling

作　　者：徐斗斗[1,2,3] 郭广礼[1,2] 栗帅[1,2,3] 王磊[1,2,3] 

机构地区：[1]国土环境与灾害监测国家测绘局重点试验室 [2]江苏省资源环境信息工程重点试验室 [3]中国矿业大学

出　　处：《金属矿山》2011年第3期42-45,共4页Metal Mine

基　　金：国家自然科学基金重点项目(编号:50834004)

摘　　要：为了分析矸石充填体压缩率的变化对矸石充填开采覆岩破坏规律的影响,利用FLAC3D数值模拟软件对兖州某一矿区的矸石充填开采进行数值模拟,结果表明:矸石充填开采地表移动变形规律和薄煤层垮落法开采类似;矸石充填体压缩率越小,地表沉陷控制效果越好;矸石压缩率增加时,地表的下沉极值、水平移动极值、倾斜极值及水平变形极值分别呈线性增大;覆岩破坏高度和矸石充填体压缩率成正线性相关。In order to analyze the effects on the laws of overlying strata destruction by changes of the compression rate of backfilling gangue,the FLAC3D was used to make a numerical simulation on the gangue backfilling mining on a mine in Yanzhou. Numerical results indieat that the movement and deformation of gangue backfilling mining are similar to that of the caving mining in thin coal. The smaller the compression rate is, the better the effect of controlling surface subsidence is. When the compression rate increases, the extremum of surface subsidence, levels of mobility, tilt value and deformation will linearly increase. The destruct height of overlying strata is linearly correlation with the compression rate of gangue backfilling.

关 键 词：矸石充填体压缩率 FLAC3D 地表移动 下沉盆地 

分 类 号：TD853.34[矿业工程—金属矿开采]