降雨对某露天矿风化砂质边坡稳定性影响规律研究  

Effect of Rainfall on the Stability of an Open-pit Mine's Weathered Sandy Slope

作　　者：李雪梅[1] 陈玉明[1] 袁利伟[1] 毛肖杰 

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《中国钨业》2016年第2期11-16,共6页China Tungsten Industry

基　　金：国家安监总局安全生产重大事故防治关键技术重点科技计划项目(10-101)

摘　　要：边坡稳定性对矿山安全生产具有重要意义。文章结合云南某露天钨矿工程概况,应用边坡分析软件GEO-Studio,选择合理的参数及边界条件,建立边坡稳定性分析数值模型,模拟在不同降雨量、不同降雨持续时间条件下边坡的降雨入渗情况以及边坡滑移面、滑移线分布情况,得到在不同工况条件下边坡的安全系数及降雨渗流对边坡稳定性影响的规律,了解边坡失稳破坏的过程,为边坡稳定性分析提供理论依据。同时对比分析采用不同的边坡稳定性分析方法计算安全系数的结果,得出结果基本一致。Slope stability is of great significance to the mine safety production.Upon choosing reasonable parameters and boundary conditions,a slope stability numerical model is established to simulate the slope rainfall infiltrations,the distribution of slip plane and slip line of an open-pit tungsten mine under different the conditions of different rainfalls and durations by applying slope stability analysis software Geo-studio.The safety factor of slope under different working conditions and influencing rule of rainfall infiltration on slope stability are obtained,which provides theoretical basis for the slope stability analysis.The safety factor results worked out from different slope stability analysis methods are compared,which showed the identical tendency.

关 键 词：降雨 风化砂质边坡 边坡稳定性 GEO-Studio 

分 类 号：TD854.6[矿业工程—金属矿开采]