摘要
介绍对两种饱和尾矿料(尾矿砂和尾矿泥)的动力变形特性进行的一系列试验研究。试验结果表明,饱和疏松的尾矿料具有敏感的不稳定结构,在往返加荷条件下,同一种尾矿料对于不同的固结比,其压力效应的试验结果可以近似地用同一条直线来表示。在固结应力条件和振动次数一定时,饱和尾矿料的残余轴应变随动剪应力比的增大而增大,其变化规律不仅在双对数坐标中呈线形关系,而且,在较小的动剪应力比变化范围内试样就会因残余轴应变的迅速增大而进入破坏状态。
The authors analyzed a series of experimental results about 2 saturated tailings material,tailings sand and tailings mud.These results showed that saturated loose tailings material had a sensitive unstable structure.Under cyclic loading and different consolidation ratio,the pressure effect of same tailings material may be expressed approximately as a straight line.When the consolidation stress and number of vibration were fixed,the residual axial strain of tailings material was increasing as the dynamic shear stress ratio increased.The varying curve was alinearity plotin loglog coordinate.The testing sample would present a failure satate at a small varying range owing to rapid increase of the residual axial strain.
出处
《水利学报》
EI
CSCD
北大核心
2003年第4期24-29,共6页
Journal of Hydraulic Engineering
关键词
尾矿料
动力变形特性
矿物成分
tailings material
dynamic deformation properties
mineral composition
