摘要
采用现场勘察、FLAC3D数值模拟与极限平衡法,对云南龙陵某铅锌矿千枚岩体的潜在不稳定边坡进行了分析。结果显示:道路开挖为其提供了剪出口;降雨量突然增大是直接原因。通过对千枚岩体特征及规律性的研究,不仅能为滑坡分析出更为具体的形成原因,解决矿山本身的稳定性问题,也为具有同样岩土类型矿山斜坡的稳定性分析与治理提供一定的参考价值,有助于工程中对降雨诱发软岩滑坡的预防和治理。
By applying field survey,FLAC^3D numerical simulation and limit equilibrium method, this paper conducted analysis on the potentially unstable side slope of phyllite rock body in a certain Pb-Zn deposit in Longling of Yunnan. The results indicated that the road excavation provided a shear opening , and a sudden increase of rainfall was the direct cause. After analyzing the characteristics and regularity of the phyllite rock, the authors not only found the actual cause of the landslide, but also solved the stability problem of the mine. The paper shed light on stability analysis and governance of side slopes in mines of the same rock type, and its conclusions would be conducive to the prevention and governance of soft rock landslide caused by rainfall in the process of construction.
作者
谭燕
徐世光
郭婷婷
杨志全
付乐意
TAN Yan;XU Shiguang;GUO Tingting;YANG Zhiquaw;FU Leyi(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Jiangsu Geological Foundation Pile Engineering Company,the Third Geological Brigade of Jiangsu Geology and Mineral Resources Bureau,Zhenjiang 212001,Jiangsu,China;Yunnan Geological Engineering Exploration Group Co.Ltd.,Kunming 650041,China;Institute of Mountain Hazards and Environment,Chinese Academy of Science and Ministry of Water Conservancy/ Key Laboratory of Mountain Hazards and Earth Surface Processes,CAS,Chengdu 610041,Sichuan,China;Graduate University of Chinese Academy of Science,Beijing 100049,China)
出处
《矿产与地质》
2018年第1期158-163,共6页
Mineral Resources and Geology
基金
国家自然科学基金(41402272)
云南省应用基础研究计划项目(2015FB122)
云南省省级人培项目(KKSY201421016
KKSY201421061)
云南省教育厅科学研究基金重点项目(2014Z031)
云南省教育厅科学研究基金(KKJ201821014)共同资助
关键词
滑坡
FLAC^3D数值模拟
极限平衡法
稳定性分析
铅锌矿
千枚岩体
landslide
FLAC^3D numerical simulation
limit equilibrium method
stability analysis
lead-zinc deposit
phyllite rock
