扫描电子显微镜在冻土研究中的应用

Application of Scanning Electronic Microscope in Study of Geocryology

利用扫描电子显微镜研究不同温度和压力条件下正冻、正融和已冻土微结构的形成及发育过程，揭示冻结过程中土颗粒位移、团聚和分异，未冻水膜形态和冷生组构的形成机理，及不同受力状态下冻土颗粒位错、破碎。

The formation and development of microstructure in frozen,freezing and thawing soil under different teperatures and overburden pressures are studied by scanning electronic microscope. Results show that the scanning electronic microscope is a good tool for the study in many aspects such as soil particle moving aggregating and separating, morphology of unfrozen water membrane, mechanism of crryogenic structure and dislocation and craking of soil particles under different overburden pressures.