尾矿砂的动力特性研究

目前国内许多尾矿坝的初始坝本身不透水且无排渗设施,因而整个尾矿坝体浸润线很高,坝内大部分尾矿砂处于饱和状态。在动荷载的作用下,这些尾矿砂的动力特性对尾矿坝的安全稳定具有重要的意义。本文利用液压式振动三轴仪,研究了某尾矿坝内尾矿砂的动力特性,讨论了影响尾矿砂液化的因素。

Study on Dynamic Properties of Tailings Sands

Many initial tailings dams are impervious in China, then, the seepage line is very high, and most sands are saturated in tailings pond. Under the action of dynamic force, the dynamic properties of tailings sands have vital importance for safety stability of tailings pond. Using electron-hydraulic dynamic triaxial apparatus, liquefaction tests are conducted, the dynamic properties of various sands in tailings pond are studied. Finally, the influence factors on liquefaction of saturated sands in tailings pond are discussed.