块体单元法安全系数取值标准研究  

Research on Standard of Safety Factor Valuation for Block Unit Method

作　　者：徐明毅[1] XU Ming-yi(Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学,湖北武汉430072

出　　处：《云南水力发电》2023年第1期66-70,共5页Yunnan Water Power

摘　　要：边坡稳定性问题涉及矿山工程、水利工程等诸多工程领域,对边坡稳定性进行分析的方法主要有极限平衡法(LEM)、有限单元法(FEM)、块体单元法(BEM)、离散单元法(DEM)、边界单元法(BEM)、界面元法(ISEM)、不连续变形分析方法(DDA)等等。选取刚体极限平衡法、有限单元法和块体单元法,对单面滑动、双面滑动的算例进行了安全系数计算和对比分析,进而建议在滑动破坏模式一致的情况下,块体单元法的安全系数取值可参照刚体极限平衡法或有限单元法的标准选取,结果偏于安全。Slope stability concerns many engineering fields such as mine engineering, water conservancy engineering and so on. The main methods for slope stability analysis are limit equilibrium method(LEM), finite element method(FEM), block element method(BEM), discrete element method(DEM), boundary element method(BEM), interface element method(ISEM) and discontinuous deformation analysis method(DDA). In this paper, rigid limit equilibrium method, finite element method and block element method are selected to carry out safety coefficient calculation and comparative analysis for single-sided and double-sided sliding examples. It is suggested that the safety factor of block element method can be selected according to the criteria of rigid body limit equilibrium method or finite element method when the sliding failure modes are identical, and the result is biased to safety.

关 键 词：刚体极限平衡法 有限单元法 块体单元法 安全系数 强度折减法 

分 类 号：TU457[建筑科学—岩土工程]