饱和尾矿料静、动强度特性的试验研究

介绍对两种饱和尾矿料(尾矿砂和尾矿泥)的静、动强度特性进行的一系列试验研究。试验结果表明，由于尾矿料颗粒组成、矿物成分等因素的影响，用尾矿料充填的地基土层具有不同于天然地基的少黏性土层的特殊性。尾矿料颗粒较细，比重较大，石英含量较多，亲水性弱，饱和的疏松的尾矿料具有非常敏感的不稳定结构。不仅在往返加荷条件下动强度低，动剪应力比变化范围小，容易发生液化和破坏，而且，当尾矿料的密度小于某一临界值时，静力条件下也会发生流滑而进入破坏状态。

Experimental study on static and dynamic strength properties of saturated tailings

Experimental study on static and dynamic strength properties of two kinds of saturated tailings is carried out.The result shows that owing to the effects of the grain and mineral composition et al.,the characteristics of foundation filled with tailings possesses the specialty other than that of natural soil.The grain of tailings is finer with larger specific density,its content of quartz is more and water affinity is weak.The saturated loose tailings has a sensitive unstable structure which not only results in lower dynamic shear stress ratio with a narrower variable range under cyclic loading and leads to liquefaction of flow failure,but also gives rise to flow failure even under static loading if the density of the tailings is smaller than a critical value.