水利学报Issue(10)：1239-1246,8.DOI:10.13243/j.cnki.slxb.2014.10.013
压缩变形影响下的土-水特征曲线及其简化表征方法
Influence of compression deformation on the soil-water characteristic curve and its simplified representation method
摘要
Abstract
The soil-water characteristic curve(SWCC)under random compression deformation is needed for study on constitutive relations of unsaturated soil, while experiments only give the SWCC under a specific condition. Compression deformation influences SWCC by way of influencing the pore distribution property. Firstly, the variation law of pore-size distributions with compression deformation was studied by using the mercury injection technique, nuclear magnetic resonance and the scanning electron microscope. Then, the variation law of SWCC with compression deformation was systematically studied based on experimental re⁃sults and available published data. The results show that, for the pores corresponding with the unit particle mass, the cumulative volume or area distributions of different compression deformation present as a"broom" profile,while the SWCCs in terms of mass water content of different compression deformation pres⁃ent as a similar profile. The good agreement of the variation laws of pore-size distributions and SWCCs shows that the internal variation mechanism of SWCC with compression deformation can be explained through pore-size distributions. Also,a simplified representation method was presented to describe the influ⁃ence law of compression deformation on SWCC,and its rationality was testified by experimental results.关键词
压缩变形/土-水特征曲线/孔隙分布/压汞技术/核磁共振Key words
compression deformation/soil-water characteristic curve/pore-size distribution/mercury injec-tion technique/nuclear magnetic resonance分类
建筑与水利引用本文复制引用
陶高梁,张季如,庄心善,杨琳..压缩变形影响下的土-水特征曲线及其简化表征方法[J].水利学报,2014,(10):1239-1246,8.基金项目
国家自然科学基金资助项目（51209084，41072214）；湖北工业大学博士科研启动基金 （）
