贵州红粘土的含水性及指标特性探讨  

A discussion of the water content and index characteristics of the red clay in Guizhou

作　　者：贺珺[1] 廖义玲[1] 闫建[1] 刘祥洋[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵阳550003

出　　处：《水文地质工程地质》2009年第2期104-107,111,共5页Hydrogeology & Engineering Geology

基　　金：贵州省2007年度研究生创新基金项目(省研理工2007005)

摘　　要：文章通过对贵州红粘土含水性指标的试验和统计,发现贵州红粘土的天然含水率和饱和度有自身的特点:一是高含水率指标与稠度状态指标的关系较特殊;二是普遍存在饱和度大于理论最大值的现象。结合红粘土特殊成分结构分析,认为其原因是红粘土中存在大量结合水。然后提出用"等效含水率"和"等效饱和度"指标来修正其含水性指标,可以消除结合水产生的影响,便于与其它土类的含水性指标进行对比。Experiments and statistics of the water content of the red clay in Guizhou show that the natural water content and the saturation of the red clay are characterized by a special relationship between the high water content index and the consistency state and with the saturation higher than the theory maximum. By analyzing the special composition and structure of the red clay, it is found that there is a lot of the combined water in the red clay. The ＂equivalent water content＂ and ＂equivalent saturation＂ are used to amend the water content index and evaluate the red clay. As a result, the unreasonable influence produced by the combined water can be eliminated, and the results are easily compared with the water content index of other soil types. saturation

关 键 词：贵州红粘土 含水率 饱和度 等效含水率 等效饱和度 

分 类 号：P642.115[天文地球—工程地质学]