干式堆存尾矿坝的稳定性分析  

Analysis on Stability of the Dry Stockpiling Tailings Dam

作　　者：杨超群 石鹏 秦柯[2,3] 

机构地区：[1]陕西冶金设计研究院有限公司 [2]金属矿山安全与健康国家重点实验室 [3]华唯金属矿产资源高效循环利用国家工程研究中心有限公司

出　　处：《现代矿业》2014年第5期109-111,共3页Modern Mining

摘　　要：工程设计中,干式堆存尾矿坝的稳定性分析往往只考虑干坡运行状态,即使考虑降雨因素,也未对降雨条件下孔压-应力进行耦合理论分析。为阐述孔压-应力耦合后对干式堆存尾矿坝稳定性分析结果的影响,采用土体本构方程、渗流方程、土体平衡方程及非饱和土孔压-应力耦合理论,分析得出在降雨条件下考虑孔压-应力耦合时,干式堆存尾矿坝的稳定性系数偏小,较实际偏于保守,对尾矿坝安全有利。In terms of engineering design work,the dry stockpiling tailings dam stability is analyzed only by considering the running state of the slopes,without considering the rainfall factors. The pore pressure and stress are not analyzed by adopting the coupling theory under the condition of rainfall. The soil constitutive equation,seepage equation,soil mass balance equation and unsaturated soil pore pressure and stress coupling theory are adopted to analyze the influence of coupling of pore pressure and stress to the stability of the dry stockpiling tailings dam. The research results show that,the smaller stability coefficients are acquired by not considering the pore pressure and stress coupling,besides that,the coefficients are good to guarantee the safety of tailing dam.

关 键 词：干式堆存 降雨条件下 孔压-应力耦合 

分 类 号：TD926.4[矿业工程—选矿]