充填体单轴压缩蠕变特性试验研究  

Uniaxial Compression Creep Test for Cemented Tailings Backfill

作　　者：林卫星[1,2] 柳小胜[1,2] 欧任泽[1,2] 

机构地区：[1]长沙矿山研究院有限责任公司,湖南长沙410012 [2]国家金属采矿工程技术研究中心,湖南长沙410012

出　　处：《矿冶工程》2015年第5期1-3,共3页Mining and Metallurgical Engineering

基　　金：国家"十二五"科技支撑计划资助(2013BAB02B04)

摘　　要：以李楼铁矿灰砂比为1∶6的充填体为研究对象,采用恒定荷载加载方式对充填体试样进行了单轴压缩蠕变试验,试验结果表明充填体具有特定的蠕变特性。选用伯格斯模型研究了充填体的蠕变变形特性;利用阻尼最小二乘法对模型参数进行拟合,得出了相应模型的理论蠕变曲线。结果显示:模型的理论蠕变曲线与试验曲线相吻合,可较好地模拟充填体的蠕变变形特性。The cemented for a uniaxial compression tailings backfill in Lilou Iron Mine, being prepared with cement-sand ratio at creep test by using constant loading methods. The obtained test data suggests 1 ： 6, was taken that this tailings backfill has certain creep properties, which was then analyzed with Burgers model. The model parameters were then fitted by using least square method, resulting in the corresponding theoretical creep curves, which coincides well with experimental curves and can describe the creep deformation characteristics of cemented tailings backfill.

关 键 词：充填体 恒定加载 变形特性 蠕变模型 

分 类 号：TD315[矿业工程—矿井建设]