寒冷条件对土体含水率的影响研究

Research on Influence of Cold Condition on Moisture Content of Soil Mass

随着环境温度的降低,土体冻结,同时土体中未冻结的部分水分开始上移,至土体表层后冻结,从而降低了整个土体的含水率。本研究采用大型沙袋进行冻结干燥试验研究,结果表明:冻结干燥方法可显著降低土体中的含水率,且易冻土和不易冻土都可用该方法进行冻结干燥,以满足工程应用的需求,对减少高含水率废弃土的堆积、减少资源浪费等有积极作用,且该技术操作简单,经济有效。

With the reduction of environment temperature and freeze of soil mass,the moisture of unfrozen part in soil mass begins to move up and then freeze after reaching the surface layer of soil mass,so as to reduce the moisture content of the whole soil mass.The experimental research on freezing drying is made by adopting a large-scale sandbag.The results show that:the freeze-drying method can remarkably reduce the moisture content in soil mass.And the freezable soil and non-freezable soil can be realized with freezing drying by using this kind of method,so as to meet the requirement of engineering application.It plays an active role in aspects of reduction of accumulation of building wastes with high moisture content,reduction of wasting of resources and so on.Moreover,this technology is simple and cost-effective.