地震中尾矿库液化失稳机理及数值模拟研

来源期刊：有色金属科学与工程2011年第2期

论文作者：蔡嗣经 张栋 何理

文章页码：1 - 6

关键词：地震；尾矿库；尾砂动力学实验；尾矿坝液化失稳机理；数值模拟

Key words：earthquake; tailings reservoir; tailings dynamic testing; tailings dam liquefying and destabilizing;

摘    要：2008年“5·12”汶川8.0级强烈地震，使四川省9座尾矿库遭受震害影响笔者在实验室采用动三轴试验机对细尾砂的动力学特性进行了试验研究，分析了地震对尾矿坝的动荷载作用机理，研究了动力条件下饱和散粒体如尾砂的液化机理以及尾矿库动力失稳的影响因素，采用数值方法模拟得出了地震中尾矿坝易发生液化失稳的关键部位.

Abstract:

9 tailing reservoirs in Sichuan province were serious affected by the 8.0 magnitude Wenchuan earthquake. This paper studies the dynamic properties of fine tailings by using triaxial dynamic testing machine in the lab. Seismic mechanism acting on tailings dam was theoretically analyzed. We also study the liquefying mechanism of saturated granule materials as tailings and main factors of influencing tailings dam stability under seismic action. The numerical simulations point out the key parts of the tailing dam which is prone to instability for seismic liquefaction in the earthquake.