Research on Permeability Characteristics of Soft Cohesive Soil in the Yangtze River Floodplain Based on PCA
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.
Yangtze River floodplainprincipal component analysissoft cohesive soilpermeability coefficient
万方数据
维普
