青藏高原多年冻土区滑坡稳定性及成因分析

Stability and Cause Analysis of Landslide in Permafrost Region of Qinghai-Tibet Plateau

青藏高原多年冻土区滑坡灾害形成机理主要为冻融泥流,冻土区滑坡稳定性是工程活动中必须解决的问题之一。文章采用传递系数法与有限元强度折减法,对位于青藏高原多年冻土区的滑坡进行稳定性分析,并详细分析研究区滑坡的成因。通过对基于两种分析方法的计算结果进行对比分析,表明有限元强度折减法具有显著的可靠性与优越性,能够为滑坡治理提供可靠的数据指导。

The formation mechanism of landslide disaster in permafrost region of Qinghai-Tibet Plateau is mainly solifluction. The stability of landslide in permafrost region is one of the problems that must be solved in engineering activities. In this paper, the transfer coefficient method and the strength reduction finite element method are used to analyze the stability of the landslide in the permafrost region of Qinghai-Tibet Plateau, and the causes of the landslide in the study area are analyzed in detail. The comparative analysis of the calculation results based on two analysis methods shows that the strength reduction finite element method has significant reliability and superiority, and can provide reliable data guidance for landslide treatment.