摘要
在干旱半干旱地区 ,非饱和土体中的气态水迁移通常是比较显著的 ,综合考虑液态水和气态水两种迁移方式研究非饱和土体中的水分迁移问题 ,目前尚属疑难问题 .本文基于非饱和土体气态水迁移引起的含水量变化方程 ,结合非饱和土体液态水迁移引起的含水量变化方程 ,提出了实现两者耦合计算的方法 .并以实验土样的水分迁移为例进行了计算 ,计算结果与试验结果是吻合的 。
For unsaturated soil in semi-arid areas, water vapor transfer and liquid water transfer together result in water content changes in the soil. Up to now, it remains a problem to get a calculation method for the coupled water vapor transfer and liquid water transfer in unsaturated soil. This paper first probed into the transfer law for water vapor in unsaturated soil, and analyzed the features for liquid water transfer in unsaturated soil. Then, a calculation method for the coupled water vapor transfer and liquid water transfer in unsaturated soil is established. After that, the calculation method is verified by comparing calculated data with the test data. The calculation results conform to the test results well, and verifies the reliability of the method.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
2004年第3期285-287,298,共4页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
陕西省自然科学基金项目 ( 2 0 0 1C2 8)
陕西省教育厅基金资助项目 ( 0 2 ik12 3)
关键词
非饱和土
气态水迁移
液态水迁移
含水量
unsaturated soil
water vapor transfer
liquid water transfer
water content
