摘要
位于我国东北、华北地区的十几座大型尾矿坝成功地经受了１９７５年海城地震（Ｍ＝７．３）和１９７６年唐山地震（Ｍ＝７８，Ｍ＝７１）的袭击，这为研究上游法尾矿坝的抗震性能以及评价目前坝体地震反应分析、稳定分析方法的能力及其有效性提供了宝贵的经验与资料。本文采用二维真非线性有效应力动力反应分析程序ＴＡＲＡ－３，研究了位于唐山市东北约５０ｋｍ处具有代表性的大石河尾矿坝。计算结果与震后宏观调查结果相符，基本上再现了１９７６年大石河尾矿坝在唐山地震过程中的表现。
More than ten large tailings dams located in Northeast and North China successfully survived the 1975 Haicheng Earthquake (M=7 3) and the 1976 Tangshan Earthquake (M=7 8 & M=7 1) Seismic performances of these tailings dams provide the valued data to understand the seismic stability of the upstream tailings dam and demonstrate the capability and utility of the analysis methods developed for the seismic response and stability of the tailings dam Dashihe tailings dam, a typical upstream dam and about 50km northeast of Tangshan City, was studied using program TARA-3:2-D direct nonlinear dynamic effective stress analysis Analytical results are fairly consistent with the seismic damage after the 1976 Earthquake The results confirm the validation of the analysis method developed by Finn and the capacity of program TARA-3 once more
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
1996年第4期48-56,共9页
Chinese Journal of Geotechnical Engineering
关键词
尾矿坝
地震反应
非线性
有效应力
增量法
tailings dam, seismic response, nonlinearity, effective stress, incremental method
