基于QUAKE/W的尾矿库地震动力响应研究
投稿时间:2018-03-30  修订日期:2019-02-13  点此下载全文
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作者单位E-mail
李全明 中国安全生产科学研究院 liqm@casst-tec.com 
杨曌 华北科技学院 1690814870@qq.com 
张红 华北科技学院  
基金项目:国家“十三五”重点研发计划项目(项目编号:2017YFC0804600);国家自然科学基金项目(编号:51874260);中国安全生产科学研究院基本科研业务费专项资金项目(2016JBKY16、2016JBKY17、2017JBKY01、2018JBKY03)
中文摘要:为研究尾矿库地震动力响应,以我国广东某山谷型尾矿库为对象,运用GEO-studio软件中QUAKE/W模块,建立本构模型研究坝体在初始稳定状态和动力响应状态的变化情况并根据震后液化区判断坝体是否会发生液化,提出应对措施。结果表明:在库区地震设防烈度6度工况下,发生地震前后总应力、有效应力、剪应力没有明显变化;尾矿库不同位置孔隙水压力均有升高相对升高值与地震时间呈线性关系;液化出现在大坝坡脚处,应力集中,发生液化会对坝体稳定性产生很大影响。建议增强两侧坝基和坡脚的稳定性,为此尾矿坝安全运行增加保障。
中文关键词:尾矿库  GEO-studio  地震动力响应;
 
Research on seismic dynamic response of tailings based on QUAKE/W
Abstract:In order to study the seismic response of tailings ponds, a valley type tailings dump in Shenzhen, China was used as the object. Using the QUAKE/W module in GEO-studio software, a constitutive model was established to study the changes in the initial stability and dynamic response of the dam. According to the post-earthquake liquefaction zone, whether or not the dam will liquefy is proposed and countermeasures are proposed. The results show that there is no obvious change in total stress, effective stress and shear stress before and after the earthquake in the seismic intensity of 6 degrees in the reservoir area; the pore water pressure in different positions of the tailings pond is increased and the relative elevation value and the earthquake time are presented. The linear relationship; liquefaction occurs at the foot of the dam slope, stress concentration, liquefaction will have a great impact on the stability of the dam. It is recommended to increase the stability of both the dam foundation and the foot of the slope, and this will increase the security of the tailings dam"s safe operation.
keywords:tailings ponds  GEO-studio  Seismic dynamic response  
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