哈密地区高铁地基膨胀泥岩分级初探

Preliminary Exploration on Expansive Mudstone Classification of High-speed Rail Foundation in Hami Area

对兰新二线工程中哈密膨胀泥岩开展室内土工试验,得到了其液限、塑限、相对密度等物性指标与矿物成分组成,对其膨胀泥岩性质进行研究分析,并通过试验得到了自由膨胀率、相对自由膨胀率等目前国际上对于膨胀泥岩分类的指标,联系工程实际,对该地区膨胀泥岩的分类分级进行了初步探索分析.

Through a series of indoor soil tests of expansive mudstone in Hami, we get some physical property data,such as liquid limit,plastic limit,relative densities and mineral composition. By analyzing the expansive soil properties, we get the free expansion rate, relatively free expansion rate etc., which are the expansive soil classi-fication index in the world at present. Engineering practice was applied to analyze preliminary the classification of the expansive soil in this region.