桂林地区常见土类土粒比重经验值

Empirical Value of Specific Gravity of Common Soils in Guilin

不同地区的上部覆盖地层由于成因和矿物成分不同,其土粒比重往往存在差异.利用数理统计的方法,对桂林市及周边地区多年中实测的2 168个土试样的塑性指数Ip值与土粒比重Gs值进行了相关性分析研究,发现Ip值与Gs值之间存在着正相关关系,随着Ip值从＜5依次增大至≥30,对应的Gs值依次为2.68～2.78.由此总结出了桂林地区具有不同Ip范围值的不同土类的土粒比重经验值,为今后本地区土工试验的有效开展提供了经验数据.

The specific gravities of soils vary because of the difference of mineral components and origins of covering beds in different areas. A correlation analysis between specific gravity （ Gs ） and plastic index （ Ip ） is carried out based on mathematical statistics of 2168 soil samples in Guilin. It is discovered that a positive correlation exists between Gs and Ip. Gs increases from 2.68 to 2.78 while Ip, increases from 〈5 to≥30. The empirical values of specific gravity are summarized in terms of different Ip of soils in Guilin, which provides an empirical data for soil test in Guilin.