Analysis of difference in thermal state between south faced slope and north faced slope of railway embankment in permafrost region 多年冻土区铁路路基阴阳坡面热状况差异分析
Role of vegetation and climate in permafrost active layer depth in arctic tundra of northern alaska and canada 植被和气候对阿拉斯加和加拿大北部北极苔原地区多年冻土活动层厚度的影响
The longitudinal cracks have become the main subgrade distress type in the permafrost regions , and there is not a effective solution now 纵向裂缝目前已成为多年冻土地区路基病害的主要类型之一，目前还没有一种有效的解决方法。
In this paper , the method of 2 - d finite element analysis was conducted to simulate the thermal state of the roadbed with insulations on permafrost 本文运用有限元分析方法，对多年冻土区含保温夹层的路基温度场进行了数值模拟。
The trend of permafrost temperature rise will be gradually restrained by reducing engineering thermal disturbances and soil temperature drop beneath the block - stone embankment 多年冻土温度升高随著工程热扰动的降低和块石路基“冷量”积累，己逐渐被抑制。
Because of regional underground water level continual dropping and climate changing to aridity , land desertifacation and degeneration of glassland and tundra will tend to worse in short period 由于区域地下水位的持续下降和气候向干旱化发展，土地沙化、草场退化及多年冻土退化短期内将趋于恶化。
It is concluded that the freezing and thawing process and the thickness of active layers change with the changes of ground characteristics , affecting the permafrost further 结果表明，由于工程活动改变了场地下垫面性质，造成了不同场地活动层冻融过程、活动层厚度等的差异，进而影响了多年冻土变化。
Thus , the applicability of block - stone embankment structure is worth to be discussed in order to take corresponding measures to solve the stability problems of embankment in warm permafrost regions 块石路基结构在高温多年冻土区适应性问题仍值得讨论，应采取相对应的补强措施，确保高温多年冻土区路基稳定性。
In order to evaluate the engineering geology factor and the stable calculation for buildings in construction areas . some science workers have done a lot of experimental study in permafrost areas in china 为了评价建筑区的工程地质条件及建筑物的稳定性计算,我国的一些科学工作者曾在多年冻土地区作了大量的试验研究。
Half of its territory lies beyond the arctic circle , winters last for eight months of the year with minus temperatures , and permafrost is a climatic feature , to a greater or lesser extent , of the entire region 其领土一半不在北极冬季长达8个月与零下的温度,且多年冻土是气候特征在较大或较小的程度上,对整个地区的稳定
