冻土与盐溶液系统中热质迁移及变形过程试验研究

被引:10
作者
徐学祖
Ю.П.列别钦科
E.M.丘维林
К.Ю.克留切科夫
机构
[1] 中国科学院兰州冰川冻土研究所冻土工程国家重点实验室
[2] 原苏联莫斯科大学地质系冻土教研室
关键词
冻土; 溶液; 热质迁移; 变形;
D O I
暂无
中图分类号
学科分类号
摘要
用1.2MPa外载固结并冻结的高岭粘土与2mol浓度的氯化钠低温溶液相接触,由于冻土与盐溶液间的水势梯度,引起等温条件下,水分和盐分从溶液向冻土中迁移。冻土中部分区段由于含盐浓度增高,冰点下降、冻土融化并产生吸热效应。融化界面以上的冻土中,由于水分积聚,冰分凝,形成条带状构造并产生放热效应。冻土出现以冻胀为主的变形。水、盐迁移通量及变形量随时间按指数规律衰减并随外载增大和温度降低而减小。
引用
收藏
页码:289 / 295
页数:7
相关论文
共 9 条
[1]  
Experimental Study on the Inference of Pressure on Mechanism of Frost Heave and Ice Segragation in Frozen Soils. Radd D F,Ortle D H. Proceedings of the 2nd International Conference on Permafrost . 1975
[2]  
Water Migration in Peat and Frozen Period and Regime in the Condition of Without Deepen Buried Permafrost. Tiutiunov A E. . 1951
[3]  
Cryohydrochemical peculiarities of the permafrost zone. Akisimova N P. . 1981
[4]  
Expeiimental Study on Formation of Cryogenic Fabric in Epigenetic and Syngenetic Frozen Ground. Ershov E D et al. Collections of Geocryological Study . 1987
[5]  
M icrostructure of Frozen Ground. Ershov E D et al. . 1988
[6]  
Cryogenic Migration of Ion and Bound Water in Ice Saturated Soils. Lebedenko IU P. Collections of Engineering Geocryology . 1989
[7]  
Ionic Mobility in Permafrost. Murrmann R P. Proceedings of the 2nd International Conference on Permafrost . 1973
[8]  
Influence of Exchanging Cations on Water Migration and Frost Heav During Soil Freezing. Nercesova Z A. Collections of Study on Physics and Mechanics of frozen soils . 1961
[9]  
Direction of Ion Migration During Cooling and Freezing Process. Qiu Guoqing et aL. Proceedings of the 5th International Conference on Permafrost . 1988