（内蒙古科技大学 建筑与土木工程学院，内蒙古 包头014010）
关键词：季节性冻土；水分迁移；冻胀
中图分类号：TV67 文献标示码：A
摘要：季节性冻土的冻胀作用对内蒙古河套灌区的农业生产具有重要的影响，水分的迁移是产生冻胀的直接原因，通过对河套灌区南边分干渠一个冻融周期内不同深度的温度和含水量进行现场测试，分析了温度对水分迁移的影响作用及水分迁移的规律。通过数据分析表明渠道边坡中下部水分迁移量比上部大，冻胀破坏严重，为渠道衬砌冻胀防护提供了依据。
The Influence of Temperature on Water Migrationof Seasonal Frozen Ground in Hetao Irrigation District
WANG Ying-hao，CHENHong-yu
（Architectureand Civil Engineering School, Inner Mongolia University of Science andTechnology, Baotou 014010, China）
Keywords:seasonally frozen ground; water migration ;frostheave
Abstract：Thefrost heave of seasonal frozen soil has an important influence on agricultural productionin Hetao Irrigation Area of Inner Mongolia Autonomous Region. Water migrationis the direct reason for the generation of the frost heaving damages. The fieldtest was carried out to analyze the ground temperature and moisture content inSouth Canal, Hetao Irrigation District during a freezing and thawing cycle inorder to research the influences of the temperature in the seasonally frozenground area on the channel’s moisture field as well as its changing laws. Theresults showed that a large amount of migrated moisture gathered in themiddle-lower part of the canal slope, leading to serious frost-heaving damages,which provides the basis for the prevention of frost heave by channel lining.