ENGINEERING PROPERTIES OF EARLY HOLOCENE SOFT CLAY ON THE EAST BANK OF ERHAI LAKE

Early Holocene thick soft clay is distributed around Erhai Lake.The results of engineering property tests indicate that the soft clay on the east bank of Erhai Lake has such engineering properties as a high water content, a high porosity ratio, high compressibility, low strength and high plasticity.The phenomenon of over-consolidation is very remarkable.The statistic analysis of physical-mechanical index parameters of soft clay indicates that :the variability coefficient of the mechanical index is high while the variability coefficient of the physical index is low, and the correlations between various physical indices and between the physical index and mechanical index are apparent.Knowledge of the relation between all kinds of indices of various engineering properties of soft clay is not only helpful to revealing the engineering properties and formation mechanism of soft clay, but also instructs us to choose relative measures to solve the engineering problems of soft clay.