冻融交界面变化对于多年冻土区斜坡路堤稳定性的影响分析

A Freeze-thaw Interface Analysis of the Influence of the Slope Embankment Stability in Permafrost Regions

依据多年冻土区斜坡路堤稳定性本质特征,认为冻融交界面位置和形态的动态变化是引起斜坡路堤稳定性呈动态变化的重要原因.以热学稳定性分析得到的不同温度场分布状况来计算相应斜坡路堤的力学稳定性,从而建立起冻融交界面位置和形态与斜坡路堤稳定性的对应关系,分析并说明了其对应关系的物理意义,其结果较为符合现场实际情况.该结论对于评价多年冻土区斜坡路堤的稳定性具有非常重要的理论和实际意义.

Based on the essential characteristics of the stability situation of permafrost slope embankment,it is considered that its dynamic changes of the location and morphology cause the dynamic change of the stability of the slope embankment.Through the different temperature distribution got by analyzing the thermal stability of the embankment slope,its mechanical stability can be calculated,and the dynamics correlation between the freeze-thaw interface and the stability of slope embankment can be established.Moreover,their physical meaning is analyzed and explained at the same time.It＇s more in line with the actual situation.The research results are very important for the evaluation of the stability of slope embankment in permafrost.