含砂量对湘北湖相软土流变特性影响研究
Effect of Sand Content on Rheological Properties of Lacustrine Soft Soil in Northern Hunan
李和志 1任虎程 2葛莎 2蒋鑫 3叶智淼1
作者信息
- 1. 湖南城建职业技术学院,湖南 湘潭 411104
- 2. 湖南科技大学,湖南 湘潭 411201
- 3. 核工业衡阳第二地质工程勘察有限公司,湖南 衡阳 421000
- 折叠
摘要
在室内配制不同含砂量的湘北湖相软土试样,开展了单级荷载下的一维固结流变试验,研究含砂量对湘北湖相软土流变特性的影响.结果表明,含砂量对湘北湖湘软土的固结变形影响显著;主固结完成时间几乎不受固结压力影响;主固结完成时间与砂土比呈线性递减关系;软土中含砂量越高,固结压力越大,次固结系数越小;次固结系数与砂土比存在良好的幂函数关系;软土中粗颗粒含量越高,分形维数越大;次固结系数与分形维数呈线性关系.
Abstract
To study the effect of sand content on the rheological properties of lacustrine soft soil in northern Hunan,one-dimensional rheological consolidation tests under single-stage load were carried out with soft soil samples prepared with different sand content in the laboratory.The results show that the sand content has a significant effect on consolidation deformation of lacustrine soft soil in northern Hunan.The time of primary consolidation is almost unaffected by consolidation pressure,and decreases linearly with the sand/soil ratio.The higher the sand content in soil,the greater the consolidation pressure,and the smaller the secondary consolidation coefficient.The relationship between the secondary consolidation coefficient and the sand/soil ratio can be well represented by a power function.The higher the content of coarse particles in soft soil,the greater the fractal dimension.There is a linear relationship between the secondary consolidation coefficient and the fractal dimension.
关键词
含砂量/湖相软土/流变特性/固结流变试验/固结时间/砂土比Key words
sand content/lacustrine soft soil/rheological properties/rheological consolidation test/consolidation time/sand/soil ratio引用本文复制引用
基金项目
湖南省自然资源厅科技计划(2023-43)
湖南省自然科学基金(2021JJ30252)
出版年
2024
NETL
NSTL
万方数据