MICROSCOPIC OBSERVATION OF ICE LENSING AND FROST HEAVE IN GLASS BEADS
MICROSCOPIC OBSERVATION OF ICE LENSING AND FROST HEAVE IN GLASS BEADS
复制标题
玻璃珠中冰透镜效应和冻胀的微观观察
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
Kamihama Tsu
中科院分区：
文献类型：
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作者：
Yoshiko Mutou;Kunio Watanabe;T. Ishizaki;M. Mizoguchi;Kamihama Tsu
土壤冻胀是一种复杂的现象，涉及水通过未冻土壤运动到冰冻锋面。为了阐明冻胀机制，使用可以独立控制温度梯度和冻结速度的装置观察了玻璃珠中的微观冰透镜效应。结果发现，就像在土壤中一样，人造冰晶状体可以在玻璃珠中形成，并且冰晶状体的厚度取决于冻结速度。此外，使用相同的装置在冷冻水粒子系统中观察到玻璃珠粒子的排除和封装。结果表明，颗粒尺寸和冻结速度是冰透镜效应的重要因素。显微镜下观察冰透镜现象有助于我们了解冻胀的机制。
Frost heave in soil is a complex phenomenon which involves movement of water through unfrozen soil to the freezing front. In order to clarify the frost heave mechanism, microscopic ice lensing in glass beads was observed using an apparatus which can control the temperature gradient and freezing velocity independently. As a result, it was found that, as in soil, artificial ice lenses can form in glass beads and that the thickness of the ice lenses depends on the freezing velocity. In addition, exclusion and encapsulation of glass beads particles were observed in freezing water-particles systems using the same apparatus. The results suggest that particle size and freezing velocity are important factors for ice lensing. Observing the ice lensing microscopically helps our understanding of the mechanism of frost heave.