申家峪尾矿坝地震动力反应分析与研究  

Seismic dynamical analysis of Shenjiayu tailing dam

作　　者：高尚青 

机构地区：[1]国家安全生产监督管理总局信息研究院,北京100029

出　　处：《中国矿业》2016年第9期166-170,共5页China Mining Magazine

摘　　要：申家峪尾矿库为坝高138m的二等库,由于筑坝工艺改为干堆使坝体结构发生变化,应对坝体的抗震稳定性进行计算和分析。研究工作根据库区工程地质环境、坝体土体物理力学特性,以主坝轴线为剖面建立几何模型,采用时域上的Wilson-θ逐步积分法,按照等价线性法对尾矿库坝体进行动力分析,得到了动力状态下坝内地震速度、地震加速度、地震位移、主应力、剪切应力及应变、超空隙水压分布及坝体自振频率,并结合计算结果对尾矿坝在动力状态下的稳定性进行了分析。研究分析表明,在加载EL Centro地震波的情况下,干堆筑坝方式的实施使坝体的抗震稳定性提高,有利于尾矿库的安全运行。ShenJia Yu tailing dam is a second class of height 138m. At present,the dam structure were changed because the discharging method instead of dry railings, so the work of seismic dynamical analysis should be carried out. Based on the geologic condition and physics mechanics parameters of soil layers, the geometric model of the central section of the dam was built. Seismic dynamica state of tailing dam was calculated in process of wilson-0 step-by-step integration and equivalence linear. The tailing dam seismic velocity, seismic acceleration, seismic displacement, the max main stress, the max shear stress and strain, and the max interstitial hydraulic pressure and natural frequency of vibration in the dam were got. The research has shown that the railings dam stability is improved with the dry railings under the loading EL Centro earthquake wave,it was favorable for operation safety.

关 键 词：尾矿坝 地震波 动力计算 时程法 

分 类 号：TV641.2[水利工程—水利水电工程]