摘要
基于富贵鸟1号尾矿库现有岩土工程地质条件,采用有限元法对该尾矿坝进行渗流稳定性及静力有限元数值模拟分析.结果表明坝体在正常运行工况以及洪水运行工况下,尾矿堆积坝坝坡浸润线埋深满足规范规定.坝体浸润线沿初期坝坝坡出逸,系透水堆石坝正常排水现象,不会对坝坡产生如管涌、流沙和表面沼泽化等渗流破坏.并在此基础上,采用毕肖普法和瑞典圆弧法对坝体进行正常水位工况、洪水位工况和洪水位及地震作用工况下的稳定性计算,得到尾矿坝坝体内部应力应变关系,以及坝体最小稳定性系数.结果表明坝体的稳定性系数大于规范要求的最细小安全系数,坝体是安全稳固的.
Based on the geological conditions of geotechnical engineering for 1#Fuguiniao Tailing Dam,this paper takes the finite element method for the tailing dam to percolate stability and make the finite element numerical simulation of stress- strain. Based on this,it takes the Bishop method and the Sweden Arc methods to analyze the stability of dam body respectively,so as to realize the coupling of numerical analysis and limit equilibrium method. The coupled analytic method displays not only the internal stress- strain relation of tailing dam body,but also the minimum stability coefficient of it. Result shows that the dam body is safe when the stability coefficient of dam body is more than the limited weensiest safety factor.
出处
《矿业工程研究》
2016年第1期58-62,共5页
Mineral Engineering Research
关键词
尾矿坝
极限平衡法
毕肖普法
瑞典圆弧法
tailing dam
limit equilibrium method
Bishop method
Sweden Arc method
