中国钼业2024，Vol.48Issue(3)：14-19,32,7.DOI:10.13384/j.cnki.cmi.1006-2602.2024.03.003
某露天矿断层发育条件及对边坡稳定影响的研究
Effect of Development Conditions of Faults on Slope Stability in a Certain Open Pit Mine
摘要
Abstract
Taking a certain open-pit mine in Xiaoxing'anling area as an example,in order to study the development conditions of faults,methods such as geophysical exploration,drilling,hydrogeological tests were used to compre-hensively analyze fault information and form a understanding of pressure torsion fault layers.Drilling results and rock and rock structure were analyzed,fault development sections were divided,and understanding of fault orienta-tion,scale,and rock characteristics were formed.Hydrogeological data and geophysical conclusions was analyzed to form understanding of water blocking faults.A three-dimensional geological model of the fault area was estab-lished and FLAC numerical analysis was applied to study the impact of faults on slope stability:until the final boundary,the F3 fault has been basically mined and the main body of the slope is in a stable state.Based on the displacement,shear strain increment,plastic zone expansion,and safety factor results,the fragmented rock mass left behind the upper fault of the northwest slope is the main risk factor for the stability of the final boundary slope.After calculation,the safety factor of the relevant area is less than 1.0,which is the key direction of slope treatment;Adopting a slope cutting and load reduction+foot pressure treatment plan were adopted,after prelimi-nary research and calculation,the amount of slope cutting work is about 5 000 000 m3,and the amount of foot pressure is about 500 000 m3.Compared to that before the clear development conditions of the F3 fault,the cost of treatment is basically controllable.关键词
压扭断层/三维地质模型/阻水/边坡Key words
compression torsion fault/3D geological model/water resistance/slope分类
矿业与冶金引用本文复制引用
李兆龙,张诏飞,沙原亭..某露天矿断层发育条件及对边坡稳定影响的研究[J].中国钼业,2024,48(3):14-19,32,7.基金项目
十四五"国家重点研发计划(编号:2022YFC2904500) （编号:2022YFC2904500）
