摘要
尾矿库在渗流条件下的稳定性是影响整个矿山安全的重要因素。本文以国内某上游法堆筑尾矿库为研究对象,采用强度折减法对尾矿库在渗流条件下的稳定性进行了系统的分析,对比了不同失稳判别准则在尾矿库稳定性分析中的适用性和局限性,提出了以初期坝附近尾砂出现指向坝外、向上的变形矢量为标志的“变形矢量图准则”。研究结果表明,基于强度折减法进行尾矿库稳定性分析时,采用“变形矢量图准则”可以更准确高效地获得尾矿库的稳定安全系数。
Seepage stability of the tailings dam plays an important role in the safety of entire project.This paper presented a case study on the evaluating the seepage stability of an upstream tailings dam.The strength reduction method was used to model the seepage stability of the tailings dam under saturated-unsaturated conditions.The applicability and limitations of different stability critical failure criterions were compared.Additionally,"Deformation Vector Method"was proposed to determine the anti-sliding stability safety of the upstream tailings dam,by using the deformation vector to point to the outside and upwards as the indicators.The analysis results indicated that it was more efficiency and accurate to acquire the stability safety factor of tailings reservoir by using"Deformation Vector Method".
作者
张宇
张树茂
崔旋
周汉民
ZHANG Yu;ZHANG Shumao;CUI Xuan;ZHOU Hanmin(BGRIMM Technology Group,Beijing 100160,China)
出处
《有色金属（矿山部分）》
2019年第5期72-77,共6页
NONFERROUS METALS(Mining Section）
关键词
尾矿库
饱和-非饱和渗流
稳定性分析
强度折减法
tailings dam
saturated-unsaturated seepage
stability analysis
strength reduction method
