晋北地区黄土湿陷系数与其物理力学性质的相关性分析

Analysis of the Correlation between Loess Collapsibility Coefficient and Its Physical Mechanics Properties in North Region of Shanxi

通过对晋北地区大量的黄土室内湿陷性试验数据进行分析,研究黄土湿陷系数与天然孔隙比、天然密度、天然含水量、压缩模量、塑性指数和液性指数6种常规物性参数之间的相关性,结果显示:黄土湿陷系数与天然孔隙比之间呈正相关关系;与天然密度、天然含水量、压缩模量、塑性指数和液性指数呈负相关关系;探讨不同湿陷强度黄土的天然孔隙比、天然密度、天然含水量及液性指数的分布规律,结果显示:该地区湿陷性黄土的天然孔隙比大于0.6,天然密度小于1.9 g/cm^3,天然含水量小于22%,液性指数小于0.25。

This paper studies the correlation between loess collapsibility coefficient and natural porosity ratio,natural density, natural water content, compressibility modulus, plastic index, liquidity index based on large amount of loess collapsibility experimental data in north region of shanxi. The study results show that there is positive correlation between loess collapsibility coefficient and natural porosity ratio. The correlations between loess collapsibility coefficient and natural density, natural water content, compressibility modulus, plastic index and liquidity index are negative. The studies of the natural porosity ratio,natural density,natural water content and liquidity index in loess of different collapsibility strength show that the natural porosity ratio of collapsible loess is more than 0. 6 ,natural density is less than 1. 9 g/cm3,natural water content is less than 22%,and its liquidity index is less than 0. 25.