摘要
大庆地区盐碱地面积较大,其表面的水渠易受到盐碱土水热特性影响而产生破坏。文中以大庆盐碱土为研究对象,进行盐碱土冻融循环试验。试验得到了冻融前后试验土样的温度分布特征、含水率变化特征及冻胀力变化特征数据,试验表明盐碱土的冻胀力产生在融化回温阶段,最大冻胀力出现在首次冻融时。
The area of saline alkali soil in Daqing area is large,whose surface canals are vulnerable to damage due to the influence of hydrothermal characteristics of saline alkali soil.The freezing thawing cycle test of Daqing saline alkali soil was carried out.The temperature distribution characteristics,water content change characteristics,and frost heaving force change characteristics data of the test soil samples before and after freezing and thawing were obtained.The results show that the frost heaving force of saline alkali soil occurs in the thawing and thawing stage,and the maximum frost heaving force occurs in the first freezing and thawing stage.
作者
程正
郑鑫
解恒燕
徐文保
张景秋
CHENG Zheng;ZHENG Xin;XIE Hengyan;XU Wenbao;ZHANG Jingqiu(College of Civil Engineering and Water Conservancy,Heilongjiang Daqing 163319,China;College of Engineering,Heilongjiang Bayi Agriculture University,Heilongjiang Daqing 163319,China)
出处
《低温建筑技术》
2022年第11期108-111,共4页
Low Temperature Architecture Technology
基金
黑龙江省自然科学基金联合引导项目(LH2019E072)
黑龙江八一农垦大学学成、引进人才科研启动计划项目(XBD2013-44)。
关键词
盐碱土
水热迁移
冻融循环
开放系统
salt-alkali soil
hydrothermal migration
freeze-thaw cycle
open system
