摘要
针对浸矿-降雨对稀土矿山原地浸矿采场边坡稳定性的影响,在对龙南县稀土矿山进行地质调查及边坡土体室内电镜实验的基础上,利用Midas GTS NX有限元分析软件,对边坡在浸矿-降雨条件下进行模拟分析,得出结论:边坡在天然工况下,浸矿-降雨后安全系数分为2.4,1.27656和1.05469;在浸矿-降雨条件下,边坡处于滑坡临界状态,滑坡危险较大,坡脚应力集中现象加剧,边坡坡脚沟谷处应变明显,其可能成为滑坡地点及滑坡破坏面。
Aiming at the influence of leaching-rainfall on the slope stability of in-situ leaching stope in rare earth mines,on the basis of geological survey of rare earth mines in Longnan County and indoor electron microscopic experiment of slope soil body,the slope was simulated and analyzed under leaching-rainfall conditions by using Midas GTS NX finite element analysis software.The conclusion was drawn that the safety factor of slope was determined as 2.4,1.27656 and 1.05469 under natural conditions and after leaching-rainfall.Under the condition of leaching-rainfall,the slope was in the critical state of landslide,and the landslide risk was high.Moreover,the stress concentration at the foot of the slope was aggravated,and the strain at the foot valley of the slope was obvious,which may become the landslide site and the landslide failure surface.
作者
陈飞
熊如宗
郭顺
钟连祥
CHEN Fei;XIONG Ruzong;GUO Shun;ZHONG Lianxiang(School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China;Jiangxi Key Laboratory of Mining Engineering,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China;Huzhou Zhonghe Surwey Planing and Design Co.,Ltd,Huzhou,Zhejiang 313000,China)
出处
《矿业研究与开发》
CAS
北大核心
2019年第2期34-37,共4页
Mining Research and Development
基金
科技部"十二五"国家科技支撑计划课题(2012BAC11B07)子课题
江西省教育厅科学技术研究项目(20160105)
国家大学生创新创业训练计划项目(201610407002)
江西理工大学矿业工程高水平学科基金项目(3304000047)
关键词
离子型稀土
原地浸矿
边坡稳定性
电镜实验
数值模拟
Ion-type rare earth
In-situ leaching
Slope stability
Electron microscope experiment
Numerical simulation
作者简介
陈飞(1969-),男,湖南邵东人,博士,副教授,主要从事地质灾害评价与防治的研究,Email:180125110@qq.com。
