| 密度对非饱和粘土渗透系数的影响研究 |
| |
| 引用本文： | 李小伟,王世梅,黄净萍.密度对非饱和粘土渗透系数的影响研究[J].西北地震学报,2011,33(Z1):214-217,222. |
| |
| 作者姓名： | 李小伟 王世梅 黄净萍 |
| |
| 作者单位： | 三峡大学三峡库区地质灾害教育部重点实验室,湖北宜昌,443002 |
| |
| 基金项目： | 三峡大学博士启动基金(KJ2009B027); 国家自然科学基金重点项目(50839004); 三峡库区三期地质灾害防治重大科学研究项目(SXKY3-2-1) |
| |
| 摘 要： | 取三峡库区某滑坡滑带土制备不同干密度的重塑土样进行饱和渗透试验和非饱和土水特征曲线试验,得到不同干密度重塑土样的土水特征曲线,通过理论公式预测出相应的非饱和渗透系数,进而得到不同干密度重塑土样渗透系数与基质吸力的关系.结果显示:渗透系数随着基质吸力的增大而呈非线性减小,当基质吸力较高时,渗透系数随基质吸力的变化比较小；...
|
| 关 键 词： | 非饱和渗透系数 土水特征曲线 基质吸力 干密度 |
Influence of Density on Permeability Coefficient of Unsaturated Soil |
| |
| LI Xiao-wei,WANG Shi-mei,HUANG Jing-ping.Influence of Density on Permeability Coefficient of Unsaturated Soil[J].Northwestern Seismological Journal,2011,33(Z1):214-217,222. |
| |
| Authors: | LI Xiao-wei WANG Shi-mei HUANG Jing-ping |
| |
| Institution: | LI Xiao-wei,WANG Shi-mei,HUANG Jing-ping(Key Laboratory of Geological Hazards on Three Gorges Reservoir Area of Education Ministry,Three Gorges University,Hubei Yichang 443002,China) |
| |
| Abstract: | Taking the soil from a landslide in Three Gorges Reservoir as a sample,experiments on the seepage of saturated soil and on the unsaturated soil-water character curve are done with different density of samples.Then permeability coefficients of unsaturated soils are deduced by the formula from soil-water character curve.And the relationship between permeability coefficients of samples with different densities and suction are gotten.The result shows that permeability coefficient decreases with suction increase... |
| |
| Keywords: | Unsaturated permeability coefficient Soil-water character curve Matrix suction Dry density |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
