煤田地质与勘探2017，Vol.45Issue(4)：126-130,5.DOI:10.3969/j.issn.1001-1986.2017.04.022
温度变化条件下重塑黄土水分迁移试验
Test of water migration of remolded loess under temperature variation
摘要
Abstract
Due to the difference of the environment,the uneven distribution of water fields will occur in the soil.In order to explore the effect of different factors on the water migration of remolded loess,laboratory tests of the water migration of remolded loess,considering dry density and initial water content for the effects of different temperature gradients and temperature levels,were carried out.The change law of moisture fields of remolded loess was analyzed.The conclusions show that the greater the temperature gradient,the faster the water migration rate is.Temperature potential is the main factor in the change of water migration.The greater the dry density of soil samples,the greater matric potential,and the smaller the permeability coefficient is,causing the slower migration rate.When the water content of soil samples is larger,the permeability coefficient is smaller and the migration rate is smaller.When the initial water content is smaller,the total soil water potential is smaller,and the migration rate is smaller.When the initial water content is in a certain range,the migration rate is faster.The lower of the temperature level,the greater of the total soil water potential,the faster of the water transport rate is.关键词
重塑黄土/温度/水分迁移/影响机理Key words
remolded loess/temperature/water migration/influence mechanism分类
建筑与水利引用本文复制引用
叶万军,刘忠祥,杨更社,赵志鹏..温度变化条件下重塑黄土水分迁移试验[J].煤田地质与勘探,2017,45(4):126-130,5.基金项目
国家自然科学基金项目(41672305,41172262) （41672305,41172262）
教育部新世纪优秀人才支持计划项目(NCET-12-1044) （NCET-12-1044）
陕西省重点科技创新团队计划(2014KCT-30)National Natural Science Foundation of China(41672305,41172262) （2014KCT-30）
Supported by Program for New Century Excellent Talents in University(NCET-12-1044) （NCET-12-1044）
Shaanxi Province Key Scientific and Technological Innovation Team Plan(2014KCT-30) （2014KCT-30）
