非饱和黄土土水特征曲线的研究

非饱和黄土土水特征曲线的研究 English Version

1.Lanzhou Branch First Railway Survey and Design Institute Lanzhou 730000 China 2.Xi’an Branch China Coal Research Institute Xi’an 710054 China

摘要: 利用高速离心机法测试了在不同温度和密度条件下的非饱和黄土的土水特征曲线。试验数据分析表明:基质吸力随含水率的增大而减小;基质吸力随密度的增大而增大;温度、密度、基质吸力与含水率之间符合幂函数的变化关系。最后推导出了一个综合考虑温度、密度、基质吸力对含水率影响的非饱和黄土土水特征曲线拟合公式,可以用来直接计算不同温度、不同密度和不同基质吸力条件下的非饱和黄土的含水率。
- 非饱和黄土 /
- 温度 /
- 密度 /
- 基质吸力 /
- 土水特征曲线
Abstract: Under different temperature and densities,the soil-water characteristic curves of unsaturated loess were deterrined by centrifuge tests.It was shown that the matrix suction decreased with the increase of the water content and density.The relationship among temperature,density,matrix suction and water content was exponential.A mathematical model of soil-water characteristic curve was derived.So the water content of unsaturated loess was computed under different temperature,densities and matrix suctions.
- unsaturated loess /
- temperature /
- density /
- matrix suction /
- soil-water characteristic curve