尾粉砂动模量阻尼试验研究

Tail of silt damping dynamic modulus

通过动三轴液化试验,研究了尾粉砂在等压固结和偏压固结下的一些力学特性,分析了动应变ε_d,固结压力σ_(3c),固结应力比E_d对动模量E_d的影响,得到了阻尼比与动应变的关系,为该尾矿库二次扩容设计提供了相关的力学特性依据。

Through tri-axial liquefaction test, the paper studies some chemical properties of tail-silty sand under equal pressure and bias pressure consolidation, analyzes the impact of dynamic stress εd , consolidated pressure （ σ3c and consolidated stress Ed upon dynamic modulus Ed, and ob-tains the relationship between damping ratio and dynamic stress, which has provided relevant mechanical property basis for expanding and desig-ning secondary tail-silty pond.