尾矿坝管涌破坏的判别方法及应用  

Method and Application of the Tailings Dam Piping Failure

作　　者：倪旭[1] 吕力行[1] 

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093

出　　处：《矿产保护与利用》2013年第2期50-53,共4页Conservation and Utilization of Mineral Resources

摘　　要：根据细粒尾矿现行的分类方法及标准,选取以0.074 mm粒径为界限粒径的且以砂性尾砂和粉性尾砂为主的细粒尾矿堆积坝为例,分析了此种堆积坝与非粘性土之间的相互关系,并采用非粘性土的管涌渗透破坏判别方法对某尾矿堆积坝发生渗流后是形成管涌还是流土进行了判定。结果的一致性说明,判别方法对非粘性土为主的细粒尾矿堆积坝适用。正确判断管涌和流土,选择相应防渗措施,是做好尾矿坝防渗设计的前提。Taking fine tailings dam as an example which features 0.074mmgrain size as its limit size and constitutes mainly of sandy tailings and silty tailings according to a current method and standard of classification, this paper analyzes the relationship between railings and noncohesive soils by virtue of noncohesive soil piping discriminant method in order to judge whether it is piping or soil flow that comes into being after the seepage. The consistency of results demonstrates the applicabili- ty to fine tailings dam of noncohesive soils. The premise for seepage prevention design lies in distin- guishing correctly piping or soil flow and adopting relevant measures.

关 键 词：尾矿堆积坝 非粘性土 渗流破坏 管涌 

分 类 号：TD926.41[矿业工程—选矿]