尾矿坝固结度分区稳定性分析  

Analysis of the tailings dam stability based on consolidation degree divisions

作　　者：田园[1] 张三 车高凤 Tian Yuan;Zhang San;Che Gaofeng(Yangling Vocational and Technical College;School of Automation,Xi'an University of Posts and Telecommunications;Key Laboratory of Loess Earthquake Engineering,Lanzhou Institute of Seismology,CEA;Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province)

机构地区：[1]杨凌职业技术学院,712100 [2]西安邮电大学自动化学院 [3]中国地震局兰州地震研究所黄土地震工程重点实验室 [4]甘肃省岩土防灾工程技术研究中心

出　　处：《黄金》2020年第10期72-77,共6页Gold

基　　金：中国地震局黄土地震重点实验室开放基金项目(KLLEE-17-001);陕西省重点研发计划资助项目(2019GY-118)。

摘　　要：尾矿坝不同部位固结状态不同,对其稳定性产生影响。以陕西汉中某尾矿坝为研究对象,运用Geostudio软件中的SLOPE模块,对尾矿坝按固结度分区,并赋予每层不同的干密度进行建模分析,对比不同方案尾矿坝安全系数的变化情况。试验结果表明:固结度逐渐增加比按照完全固结方式建立模型计算得到的安全系数小,更符合实际情况;干密度整体布置偏小的尾矿坝对固结度的变化更敏感。该研究为尾矿坝稳定性分析提供更符合工程实际的计算方法。Different consolidation state of different sections in tailings dam influences the stability.This paper takes the tailings dam in Hanzhong,Shaanxi as the research subject,and uses the SLOPE module in Geostudio to divide the tailings dam according to the consolidation degree,and assigns each layer different dry density for modeling analysis,and compares the variation of safety coefficient of tailings dam in different plans.The test results show that the safety factor is smaller in the gradually increasing consolidation degree model than that calculated in the model based on the complete consolidation method,which is more in line with the actual situation;the tailings dam with a smaller overall dry density is more sensitive to the changes of consolidation degree.The research can provide more practical calculation method for tailings dam stability analysis.

关 键 词：尾矿坝 固结度 稳定性 分区 密度分布 

分 类 号：TD8546[矿业工程—金属矿开采] TD7[矿业工程—矿山开采]