工业尾矿填埋场边坡上防渗膜稳定性分析

Stability analysis of geomembrane in industrial tailings landfill slope

为研究2种堆填方式下防渗膜发生拉裂破坏的原因及差异,综合考虑填埋体自重、侧压、水压力、沉降及基础平台影响等的综合作用,建立平衡微分方程,得到防渗膜上拉力及位移的解析解。研究结果表明:湿堆方式下防渗膜上拉力更小;坡角、界面摩擦角、单台阶高度及埋深是影响膜上拉力的主要因素。

In order to research the tension of anti-seepage membrane in industrial tailings landfill slope,and the causes of cracking failure,the interaction between solid waste weight,lateral pressure,hydrostatic pressure,tailing settlement,boundary effects and so on were considered.The analytical solution of anti-seepage membrane tension and displacement through equilibrium differential equation was obtained.The results show that using wet exhaust membrane the tension is smaller and safer.The main factors affecting membrane tension size have single bench height,interface friction angle,slope angle and depth.