西板岔沟尾矿坝静力和动力稳定性分析

Static and Dynamic Stability Analysis of the Xibanchagou Tailing Dam

采用西安理工大学研发的EFES3D程序,运用等价粘弹性模型的三维有效应力有限元法,对河南洛南西板岔沟尾矿坝进行了地震永久残余变形、液化分析和边坡稳定分析,求得残余变形、孔压水平分布场和边坡安全系数。计算得到的坝坡的静力稳定最小的安全系数Fs为1.9,地震反应结束时的动力边坡稳定安全系数为1.19。计算结果表明西板岔沟尾矿坝在静力状态及动力作用下都是稳定的。

Using the EFES3D program that developed by Xi＇an University of Technology,base on the equivalent viscoelastic constitutive model used in the 3D effective stress FEM analysis,the analysis for the permanent residual deformation, liquefaction and slope stability from earthquake response at Xibanchagou tailings dam in Lunan county Hehan province.By finite element calculation,for the static dam slope stability,the minimum safety factor is 1.9,for the dynamic slope stability,at the end of seismic response safety factor is 1.19.The results show that the Xibanchagou tailings dam is stable in the static calculation and the seismic response.