滑坡稳定系数与安全系数的异同  

Similarities and Differences between Stability Factor and Safety Factor of Landslide

作　　者：黄先光[1] 

机构地区：[1]兰州铁路局建设管理处,甘肃兰州730000

出　　处：《兰州交通大学学报》2015年第6期32-37,共6页Journal of Lanzhou Jiaotong University

摘　　要：针对包括现行规范在内的岩土界将滑坡稳定系数与安全系数混为一谈的现象,以及安全系数规范值有些偏高影响设计的情况,首先说明了稳定系数和安全系数的物理意义都是滑坡的稳定程度,并据此强调了稳定性计算方法和推力计算方法必须一致、安全系数与计算方法必须配套,指出了比较严谨的稳定系数定义是抗滑力与下滑力之比、比较可靠的稳定性和推力计算方法是传递系数法,再从参照物和时间的角度出发阐述了稳定系数与安全系数的异同点,最后分析了安全系数应该考虑滑坡体积、地震烈度、计算方法等因素,为滑坡推力计算时安全系数的合理取值提供了参考.In connection with the phenomenon of confused stability factor and safety factor and high safety factors impacting the design of landslide in the current specification, the physical meaning of stability factor and safety factor is explained to be the stability degree of the landslide, then it is emphasized that the stability calculation method and the thrust calculation method must be consistent and the safety factor and the calculation method must be matching, and it is also pointed out that the more precise definition of stability factor is the ratio of sliding resistance to sliding force, and the more reliable stability calculation method and thrust calculation method are the transfer coefficient method. Furthermore, the similarities and differences between stability factor and safety factor are elaborated from aspects of reference object and time. Finally,it is ana- lyzed that the safety factor should include landslide volume, seismic intensity, calculation method and other factors. It provides the reference for the reasonable value of safety factor when calculat- ing the thrust of landslide.

关 键 词：滑坡 稳定系数 安全系数 传递系数法 

分 类 号：P642.22[天文地球—工程地质学]