The weak cohesive soil in the Yangtze River floodplain is widely distributed in the lower reaches of the Yangtze River,whose deformation and settlement have a significant impact on engineering.The permeability coefficient is an important index that affects the seepage deformation and consolidation settlement.The permeability coefficient is influenced by many factors.There is a certain correlation between the various influencing factors.Taking Nanjing Yangtze River floodplain soft cohesive soil as an example,firstly,based on correlation analysis between permeability coefficient and various indicators,six factors with better correlation with permeability coefficient are selected.Then,by using principal component analysis to reduce the dimensionality of the six selected indicators,three independent comprehensive indicators affecting the permeability coefficient are obtained,and a calculation model for the permeability coefficient of weak cohesive soil is established.It has a certain reference value for the study of the permeability characteristics and consolidation settlement of weak cohesive soil.
关键词
长江漫滩/主成分分析/软弱黏性土/渗透系数
Key words
Yangtze River floodplain/principal component analysis/soft cohesive soil/permeability coefficient
维普
万方数据