材料非饱和对尾矿库三维渗流影响分析

基于非饱和土渗流理论，针对云南省一尾矿库，采用ＭＩＤＡＳ／ＧＴＳＮＸ有限元分析软件建立了尾 矿库三维渗流有限元模型，得到了正常工况和洪水工况下尾矿库浸润面位置和孔隙水压力分布规律。 并在此基础上，将考虑材料非饱和特性渗流计算结果与不考虑材料非饱和特性渗流计算结果进行了对 比分析，初步探讨了材料非饱和特性对尾矿库安全稳定运行的影响。结果显示，材料非饱和特性对尾矿 库渗流规律的影响显著，不利于尾矿坝的安全稳定运行。

Analysis of the Influence of Material Unsaturation on Three Dimensional Seepage of Tailings Reservoir

Based on the unsaturated soil theory ,one tailings dam in Yunnan Province was taken as an example to estab-lish a seepage finite element model by using MIDAS-GTS NX finite element software .The tailings pore water pressure distribution and infiltration line position under normal condition and the condition of flood was acquired .And the calcula-tion results of seepage with and without considering material unsaturation were compared ,and preliminary study on the ef-fect of unsaturated material characteristics on the safe and stable operation of the tailings dam was conducted .The results shows that unsaturation has significant influence on the seepage of the tailings dam and is not safe and stable to the opera-tion of tailings dam .