基于拟静力法和有限差分法的细砂尾矿坝动力稳定性分析与评价  

Analysis and evaluation on dynamic stability of sand tailings dam based on pseudo-static method and finite difference method

作　　者：秦晓鹏[1] 陈立宏[1] 孙洪月[1] 余雪松[1] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044

出　　处：《中国安全生产科学技术》2013年第12期46-51,共6页Journal of Safety Science and Technology

摘　　要：通过采用拟静力法和有限差分法两种方法分别对北京密云县的和尚峪尾矿库坝进行了动力稳定性分析,然后计算得到在地震荷载影响下的边坡时程安全系数,并将此处所得到的安全系数与笔者之前采用拟静力法计算得到安全系数进行对比。最后,基于陈育民开发的PL-Finn模型并利用FLAC3D对尾矿坝在地震条件下的液化区域以及液化后的大变形进行了分析。The dynamic stability on the fine sand tailings dam of Heshangyu in the county of Miyun, Beijing was analyzed with the pseudo static method and finite differential method. The safety coefficient of different time on the slip crack surface under the condition of earthquake was obtained, and the safety coefficient was compared with the safety coefficient calculated by pseudo-static method. At last the large deformation of liquefaction and post- liquefac- tion under the condition of earthquake were calculated using the software of FLAC3D by the model of PL-fin de- signed by Dr Chen Yumin.

关 键 词：尾矿坝 拟静力法 有限差分法 抗震分析 动力响应 液化变形 

分 类 号：X936[环境科学与工程—安全科学]